/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options interpolation-heuristic=FIRST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-eb0fd7c [2020-09-21 11:21:08,911 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-21 11:21:08,915 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-21 11:21:08,941 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-21 11:21:08,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-21 11:21:08,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-21 11:21:08,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-21 11:21:08,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-21 11:21:08,948 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-21 11:21:08,949 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-21 11:21:08,950 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-21 11:21:08,952 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-21 11:21:08,952 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-21 11:21:08,953 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-21 11:21:08,955 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-21 11:21:08,956 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-21 11:21:08,957 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-21 11:21:08,958 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-21 11:21:08,960 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-21 11:21:08,962 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-21 11:21:08,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-21 11:21:08,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-21 11:21:08,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-21 11:21:08,968 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-21 11:21:08,971 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-21 11:21:08,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-21 11:21:08,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-21 11:21:08,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-21 11:21:08,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-21 11:21:08,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-21 11:21:08,975 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-21 11:21:08,976 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-21 11:21:08,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-21 11:21:08,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-21 11:21:08,980 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-21 11:21:08,980 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-21 11:21:08,981 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-21 11:21:08,981 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-21 11:21:08,981 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-21 11:21:08,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-21 11:21:08,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-21 11:21:08,985 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-21 11:21:09,025 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-21 11:21:09,025 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-21 11:21:09,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-21 11:21:09,027 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-21 11:21:09,027 INFO L138 SettingsManager]: * Use SBE=true [2020-09-21 11:21:09,028 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-21 11:21:09,028 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-21 11:21:09,028 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-21 11:21:09,028 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-21 11:21:09,029 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-21 11:21:09,030 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-21 11:21:09,030 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-21 11:21:09,030 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-21 11:21:09,031 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-21 11:21:09,031 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-21 11:21:09,031 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-21 11:21:09,031 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-21 11:21:09,032 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-21 11:21:09,032 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-21 11:21:09,032 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-21 11:21:09,032 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-21 11:21:09,032 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:09,033 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-21 11:21:09,033 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-21 11:21:09,033 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-21 11:21:09,033 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-21 11:21:09,033 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-21 11:21:09,034 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-21 11:21:09,034 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-21 11:21:09,034 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;interpolation-heuristic=FIRST;log-additional-information=true; [2020-09-21 11:21:09,481 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-21 11:21:09,499 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-21 11:21:09,503 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-21 11:21:09,505 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-21 11:21:09,506 INFO L275 PluginConnector]: CDTParser initialized [2020-09-21 11:21:09,507 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-21 11:21:09,587 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0f5c92c/d73ec2d8b40b48f7903f8b73c14ea53a/FLAGf8700663f [2020-09-21 11:21:10,054 INFO L306 CDTParser]: Found 1 translation units. [2020-09-21 11:21:10,055 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_5-2.c [2020-09-21 11:21:10,064 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0f5c92c/d73ec2d8b40b48f7903f8b73c14ea53a/FLAGf8700663f [2020-09-21 11:21:10,417 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/7d0f5c92c/d73ec2d8b40b48f7903f8b73c14ea53a [2020-09-21 11:21:10,431 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-21 11:21:10,439 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-21 11:21:10,440 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:10,440 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-21 11:21:10,444 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-21 11:21:10,446 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,450 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@22f0616b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10, skipping insertion in model container [2020-09-21 11:21:10,450 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,460 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-21 11:21:10,485 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-21 11:21:10,735 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:10,741 INFO L203 MainTranslator]: Completed pre-run [2020-09-21 11:21:10,761 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-21 11:21:10,776 INFO L208 MainTranslator]: Completed translation [2020-09-21 11:21:10,777 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10 WrapperNode [2020-09-21 11:21:10,777 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-21 11:21:10,778 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-21 11:21:10,778 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-21 11:21:10,778 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-21 11:21:10,792 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,792 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,800 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,800 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,884 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,888 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,894 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... [2020-09-21 11:21:10,896 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-21 11:21:10,897 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-21 11:21:10,897 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-21 11:21:10,897 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-21 11:21:10,899 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-21 11:21:10,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-21 11:21:10,984 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-21 11:21:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-21 11:21:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-21 11:21:10,985 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-21 11:21:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-21 11:21:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-21 11:21:10,985 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-21 11:21:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-21 11:21:10,986 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-21 11:21:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-21 11:21:10,987 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-21 11:21:11,250 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-21 11:21:11,251 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-21 11:21:11,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:11 BoogieIcfgContainer [2020-09-21 11:21:11,258 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-21 11:21:11,260 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-21 11:21:11,260 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-21 11:21:11,264 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-21 11:21:11,264 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.09 11:21:10" (1/3) ... [2020-09-21 11:21:11,265 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:11, skipping insertion in model container [2020-09-21 11:21:11,265 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.09 11:21:10" (2/3) ... [2020-09-21 11:21:11,266 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@64e6465c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.09 11:21:11, skipping insertion in model container [2020-09-21 11:21:11,266 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.09 11:21:11" (3/3) ... [2020-09-21 11:21:11,268 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_5-2.c [2020-09-21 11:21:11,283 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-21 11:21:11,294 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-21 11:21:11,321 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-21 11:21:11,357 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-21 11:21:11,357 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-21 11:21:11,358 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-21 11:21:11,358 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-21 11:21:11,358 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-21 11:21:11,358 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-21 11:21:11,358 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-21 11:21:11,359 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-21 11:21:11,384 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states. [2020-09-21 11:21:11,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-21 11:21:11,392 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:11,394 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:11,394 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:11,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:11,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1464461757, now seen corresponding path program 1 times [2020-09-21 11:21:11,416 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:11,416 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [228666241] [2020-09-21 11:21:11,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:11,524 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:11,563 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:11,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:11,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:11,564 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:11,564 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-09-21 11:21:11,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:11,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-21 11:21:11,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:11,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:11,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:11,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:11,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:11,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:11,638 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:11,638 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:11,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:11,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:11,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:11,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:11,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:11,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:11,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:11,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:11,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:11,661 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:11,662 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:11,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:11,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:11,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:11,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:11,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:11,695 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:11,696 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [228666241] [2020-09-21 11:21:11,698 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:11,698 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:11,699 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1910562823] [2020-09-21 11:21:11,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:11,706 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:11,724 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:11,725 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:11,728 INFO L87 Difference]: Start difference. First operand 33 states. Second operand 5 states. [2020-09-21 11:21:11,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:11,899 INFO L93 Difference]: Finished difference Result 44 states and 53 transitions. [2020-09-21 11:21:11,900 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:11,902 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-21 11:21:11,902 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:11,917 INFO L225 Difference]: With dead ends: 44 [2020-09-21 11:21:11,917 INFO L226 Difference]: Without dead ends: 30 [2020-09-21 11:21:11,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:11,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-21 11:21:11,980 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-21 11:21:11,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:21:11,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:21:11,985 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 13 [2020-09-21 11:21:11,986 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:11,986 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:21:11,986 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:11,986 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:21:11,988 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-09-21 11:21:11,988 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:11,988 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:11,989 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-21 11:21:11,989 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:11,989 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:11,989 INFO L82 PathProgramCache]: Analyzing trace with hash -1134800479, now seen corresponding path program 1 times [2020-09-21 11:21:11,990 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:11,990 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1991049689] [2020-09-21 11:21:11,990 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:12,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,011 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,012 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,012 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,012 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,012 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 23 [2020-09-21 11:21:12,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:12,013 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:12,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:12,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:12,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,043 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,044 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,044 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,044 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:12,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:12,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:12,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:12,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:12,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,064 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,065 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,065 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,066 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,066 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:12,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:12,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:12,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:12,068 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:12,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,095 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-21 11:21:12,095 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1991049689] [2020-09-21 11:21:12,096 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-21 11:21:12,096 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-21 11:21:12,096 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298015534] [2020-09-21 11:21:12,098 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-21 11:21:12,099 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:12,099 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-21 11:21:12,099 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-21 11:21:12,100 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-09-21 11:21:12,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:12,171 INFO L93 Difference]: Finished difference Result 36 states and 44 transitions. [2020-09-21 11:21:12,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-21 11:21:12,172 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 14 [2020-09-21 11:21:12,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:12,174 INFO L225 Difference]: With dead ends: 36 [2020-09-21 11:21:12,174 INFO L226 Difference]: Without dead ends: 32 [2020-09-21 11:21:12,175 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:12,176 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-09-21 11:21:12,186 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2020-09-21 11:21:12,186 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-21 11:21:12,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-09-21 11:21:12,188 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 14 [2020-09-21 11:21:12,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:12,189 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-09-21 11:21:12,189 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-21 11:21:12,189 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-09-21 11:21:12,191 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-21 11:21:12,191 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:12,191 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:12,192 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-21 11:21:12,192 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:12,192 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:12,192 INFO L82 PathProgramCache]: Analyzing trace with hash -1592795560, now seen corresponding path program 1 times [2020-09-21 11:21:12,193 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:12,193 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [891196476] [2020-09-21 11:21:12,193 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:12,220 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,256 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,257 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,259 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,259 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 39 [2020-09-21 11:21:12,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-21 11:21:12,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:12,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-21 11:21:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:12,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,315 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,319 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:12,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:12,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:12,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:12,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,361 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,362 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,363 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,363 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:21:12,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-21 11:21:12,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:21:12,365 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:12,365 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:12,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,431 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,432 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:12,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:12,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:12,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:12,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:12,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:21:12,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,468 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,468 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,469 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:12,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:12,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:12,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:12,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,478 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:21:12,479 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [891196476] [2020-09-21 11:21:12,479 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:12,479 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:12,480 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415612823] [2020-09-21 11:21:12,480 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:12,481 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:12,481 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:12,481 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:12,481 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 7 states. [2020-09-21 11:21:12,579 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:12,580 INFO L93 Difference]: Finished difference Result 58 states and 78 transitions. [2020-09-21 11:21:12,580 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-21 11:21:12,581 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 26 [2020-09-21 11:21:12,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:12,582 INFO L225 Difference]: With dead ends: 58 [2020-09-21 11:21:12,583 INFO L226 Difference]: Without dead ends: 34 [2020-09-21 11:21:12,584 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:12,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-09-21 11:21:12,605 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-09-21 11:21:12,606 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-09-21 11:21:12,607 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-09-21 11:21:12,608 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-09-21 11:21:12,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:12,608 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-09-21 11:21:12,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:12,608 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-09-21 11:21:12,610 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-21 11:21:12,610 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:12,610 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] [2020-09-21 11:21:12,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-21 11:21:12,611 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:12,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:12,612 INFO L82 PathProgramCache]: Analyzing trace with hash 746633022, now seen corresponding path program 1 times [2020-09-21 11:21:12,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:12,612 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1165107414] [2020-09-21 11:21:12,613 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:12,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,638 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,638 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,638 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,639 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-09-21 11:21:12,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:12,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:12,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-21 11:21:12,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:12,658 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,659 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,659 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,660 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,660 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,660 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:12,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:12,661 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:12,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:12,662 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,663 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:12,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,683 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:12,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:12,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,737 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,738 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,738 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,738 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,738 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:12,739 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:12,739 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:12,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:12,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:12,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:12,764 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:12,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,769 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,769 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,770 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,770 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:12,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:12,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:12,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:12,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:12,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:12,778 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-21 11:21:12,778 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1165107414] [2020-09-21 11:21:12,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:12,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-21 11:21:12,779 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1544734445] [2020-09-21 11:21:12,780 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-21 11:21:12,780 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:12,780 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-21 11:21:12,781 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:12,781 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 7 states. [2020-09-21 11:21:12,935 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:12,935 INFO L93 Difference]: Finished difference Result 50 states and 69 transitions. [2020-09-21 11:21:12,936 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:21:12,936 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 27 [2020-09-21 11:21:12,936 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:12,938 INFO L225 Difference]: With dead ends: 50 [2020-09-21 11:21:12,939 INFO L226 Difference]: Without dead ends: 46 [2020-09-21 11:21:12,939 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:12,940 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-21 11:21:12,950 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-21 11:21:12,950 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-21 11:21:12,952 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 60 transitions. [2020-09-21 11:21:12,952 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 60 transitions. Word has length 27 [2020-09-21 11:21:12,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:12,953 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 60 transitions. [2020-09-21 11:21:12,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-21 11:21:12,953 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 60 transitions. [2020-09-21 11:21:12,955 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-09-21 11:21:12,955 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:12,956 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:12,956 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-21 11:21:12,956 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:12,956 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:12,957 INFO L82 PathProgramCache]: Analyzing trace with hash 986908919, now seen corresponding path program 1 times [2020-09-21 11:21:12,957 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:12,957 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1441243985] [2020-09-21 11:21:12,957 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:12,983 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:12,983 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-21 11:21:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:12,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-21 11:21:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:13,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,025 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,025 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,026 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,026 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:13,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,026 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-21 11:21:13,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:13,027 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:13,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,064 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,064 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,064 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,065 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 44 [2020-09-21 11:21:13,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:13,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:13,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-21 11:21:13,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:13,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:13,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,101 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,101 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,101 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,102 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-09-21 11:21:13,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:13,103 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-21 11:21:13,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:13,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,141 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,142 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,142 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,142 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,143 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:13,143 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:13,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:13,144 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-09-21 11:21:13,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,169 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,169 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,169 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:13,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:13,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-09-21 11:21:13,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,179 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,179 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,179 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,180 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,180 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:13,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:13,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,186 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:21:13,187 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1441243985] [2020-09-21 11:21:13,187 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:13,187 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-21 11:21:13,188 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1126140712] [2020-09-21 11:21:13,188 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-21 11:21:13,188 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:13,189 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-21 11:21:13,189 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-21 11:21:13,189 INFO L87 Difference]: Start difference. First operand 44 states and 60 transitions. Second operand 6 states. [2020-09-21 11:21:13,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:13,283 INFO L93 Difference]: Finished difference Result 86 states and 132 transitions. [2020-09-21 11:21:13,283 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-21 11:21:13,283 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 39 [2020-09-21 11:21:13,284 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:13,285 INFO L225 Difference]: With dead ends: 86 [2020-09-21 11:21:13,285 INFO L226 Difference]: Without dead ends: 48 [2020-09-21 11:21:13,287 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-21 11:21:13,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-21 11:21:13,296 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-21 11:21:13,297 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-21 11:21:13,298 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 65 transitions. [2020-09-21 11:21:13,298 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 65 transitions. Word has length 39 [2020-09-21 11:21:13,299 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:13,299 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 65 transitions. [2020-09-21 11:21:13,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-21 11:21:13,299 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 65 transitions. [2020-09-21 11:21:13,301 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-21 11:21:13,301 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:13,301 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:13,302 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-21 11:21:13,302 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:13,302 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:13,302 INFO L82 PathProgramCache]: Analyzing trace with hash -2100495745, now seen corresponding path program 1 times [2020-09-21 11:21:13,302 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:13,303 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1454985825] [2020-09-21 11:21:13,303 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:13,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,326 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,326 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,326 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,327 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-09-21 11:21:13,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-21 11:21:13,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:13,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:13,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:13,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,350 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,350 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,350 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,350 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:13,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:13,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:13,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:13,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,379 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,380 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,380 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,380 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,380 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:21:13,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:13,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:13,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:13,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:13,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,429 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,430 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,430 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,430 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:13,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:13,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:13,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:13,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,488 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,489 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,489 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,489 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,490 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:13,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:13,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:13,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:13,495 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:13,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,499 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,500 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,500 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,500 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:13,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:13,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:13,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:13,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,514 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,514 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,515 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,515 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:13,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:13,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:13,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:13,543 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 4 proven. 3 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-21 11:21:13,544 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1454985825] [2020-09-21 11:21:13,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:13,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:13,545 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1335354117] [2020-09-21 11:21:13,545 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:13,546 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:13,546 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:13,546 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:13,547 INFO L87 Difference]: Start difference. First operand 48 states and 65 transitions. Second operand 9 states. [2020-09-21 11:21:13,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:13,680 INFO L93 Difference]: Finished difference Result 93 states and 141 transitions. [2020-09-21 11:21:13,681 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-21 11:21:13,681 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 40 [2020-09-21 11:21:13,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:13,682 INFO L225 Difference]: With dead ends: 93 [2020-09-21 11:21:13,683 INFO L226 Difference]: Without dead ends: 51 [2020-09-21 11:21:13,684 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:13,685 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-21 11:21:13,693 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 46. [2020-09-21 11:21:13,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-21 11:21:13,698 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 62 transitions. [2020-09-21 11:21:13,698 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 62 transitions. Word has length 40 [2020-09-21 11:21:13,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:13,702 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 62 transitions. [2020-09-21 11:21:13,702 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:13,702 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 62 transitions. [2020-09-21 11:21:13,704 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-09-21 11:21:13,704 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:13,705 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:13,705 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-21 11:21:13,705 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:13,705 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:13,705 INFO L82 PathProgramCache]: Analyzing trace with hash 208191613, now seen corresponding path program 1 times [2020-09-21 11:21:13,706 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:13,706 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [413062524] [2020-09-21 11:21:13,706 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:13,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,727 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,728 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,728 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,728 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,728 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-21 11:21:13,729 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,729 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:13,729 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:13,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:13,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-21 11:21:13,730 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,746 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:13,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:13,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:13,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,752 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:13,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,775 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,775 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,776 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,776 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:13,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-21 11:21:13,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:13,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:13,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:13,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,809 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,824 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,825 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,825 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,825 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:13,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:13,826 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:13,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:13,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:13,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,858 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,858 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,859 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,859 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:13,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:13,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:13,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:13,876 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,878 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,878 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,878 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,878 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:13,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:13,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,883 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:13,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:13,886 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:13,887 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:13,887 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:13,887 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:13,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:13,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:13,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:13,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:13,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:13,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:13,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:13,896 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 10 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-21 11:21:13,897 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [413062524] [2020-09-21 11:21:13,897 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:13,897 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:21:13,897 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1344013123] [2020-09-21 11:21:13,898 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:21:13,898 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:13,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:21:13,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:13,899 INFO L87 Difference]: Start difference. First operand 46 states and 62 transitions. Second operand 8 states. [2020-09-21 11:21:14,056 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:14,056 INFO L93 Difference]: Finished difference Result 66 states and 102 transitions. [2020-09-21 11:21:14,057 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:14,057 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 41 [2020-09-21 11:21:14,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:14,060 INFO L225 Difference]: With dead ends: 66 [2020-09-21 11:21:14,060 INFO L226 Difference]: Without dead ends: 62 [2020-09-21 11:21:14,061 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-21 11:21:14,062 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-21 11:21:14,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 59. [2020-09-21 11:21:14,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-21 11:21:14,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 90 transitions. [2020-09-21 11:21:14,075 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 90 transitions. Word has length 41 [2020-09-21 11:21:14,075 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:14,075 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 90 transitions. [2020-09-21 11:21:14,076 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:21:14,076 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 90 transitions. [2020-09-21 11:21:14,078 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-21 11:21:14,078 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:14,078 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 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] [2020-09-21 11:21:14,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-21 11:21:14,079 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:14,079 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:14,079 INFO L82 PathProgramCache]: Analyzing trace with hash -405677468, now seen corresponding path program 1 times [2020-09-21 11:21:14,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:14,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [690842321] [2020-09-21 11:21:14,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:14,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,110 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,110 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,110 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,110 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-21 11:21:14,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:21:14,111 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,111 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:14,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:14,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,127 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:14,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,129 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,129 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,129 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,130 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:14,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:14,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:14,143 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,152 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,152 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,153 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,153 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 63 [2020-09-21 11:21:14,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:14,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:21:14,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:14,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,184 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,184 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,185 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,185 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-21 11:21:14,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:14,186 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:14,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-21 11:21:14,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,227 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,228 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,228 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:14,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:14,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:14,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,270 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,271 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,271 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,271 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,271 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:14,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:14,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:14,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:14,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:14,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,280 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,281 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,281 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,281 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:14,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:14,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:14,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:14,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:14,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,293 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,293 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,293 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,293 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:14,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:14,294 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:14,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:14,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 36 [2020-09-21 11:21:14,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,312 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,312 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,312 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,313 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:14,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-21 11:21:14,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:14,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,322 INFO L134 CoverageAnalysis]: Checked inductivity of 44 backedges. 15 proven. 4 refuted. 0 times theorem prover too weak. 25 trivial. 0 not checked. [2020-09-21 11:21:14,323 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [690842321] [2020-09-21 11:21:14,323 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:14,323 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-21 11:21:14,323 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [11713217] [2020-09-21 11:21:14,324 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-21 11:21:14,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:14,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-21 11:21:14,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-21 11:21:14,325 INFO L87 Difference]: Start difference. First operand 59 states and 90 transitions. Second operand 8 states. [2020-09-21 11:21:14,448 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:14,448 INFO L93 Difference]: Finished difference Result 125 states and 221 transitions. [2020-09-21 11:21:14,449 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:14,449 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-21 11:21:14,450 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:14,451 INFO L225 Difference]: With dead ends: 125 [2020-09-21 11:21:14,451 INFO L226 Difference]: Without dead ends: 72 [2020-09-21 11:21:14,452 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:21:14,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-21 11:21:14,464 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-21 11:21:14,464 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-21 11:21:14,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 102 transitions. [2020-09-21 11:21:14,466 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 102 transitions. Word has length 54 [2020-09-21 11:21:14,466 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:14,466 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 102 transitions. [2020-09-21 11:21:14,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-21 11:21:14,466 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 102 transitions. [2020-09-21 11:21:14,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-21 11:21:14,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:14,468 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 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] [2020-09-21 11:21:14,468 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-21 11:21:14,469 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:14,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:14,469 INFO L82 PathProgramCache]: Analyzing trace with hash -242988780, now seen corresponding path program 1 times [2020-09-21 11:21:14,469 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:14,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1117896052] [2020-09-21 11:21:14,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:14,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,515 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,515 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,516 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,516 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,516 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-21 11:21:14,516 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-21 11:21:14,517 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:14,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:14,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:14,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,536 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,536 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,536 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,536 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:14,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:14,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:14,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,562 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:14,563 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,563 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,563 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:21:14,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:14,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:14,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:14,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:14,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,585 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,601 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:14,601 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,601 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,601 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:14,602 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,602 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:14,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,646 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:14,647 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,647 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,647 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:14,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:14,648 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:14,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,676 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,676 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,677 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,677 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,677 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:14,677 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:14,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:14,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,685 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,685 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,685 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:14,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,686 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:14,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:14,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,693 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,694 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,694 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,694 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:14,695 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:14,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:14,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:14,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:14,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,707 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:14,707 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,708 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,708 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:14,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-21 11:21:14,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:14,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:14,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,735 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 21 proven. 9 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-21 11:21:14,735 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1117896052] [2020-09-21 11:21:14,735 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:14,736 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:14,736 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1449015027] [2020-09-21 11:21:14,736 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:14,737 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:14,737 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:14,737 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:14,737 INFO L87 Difference]: Start difference. First operand 66 states and 102 transitions. Second operand 9 states. [2020-09-21 11:21:14,918 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:14,918 INFO L93 Difference]: Finished difference Result 132 states and 233 transitions. [2020-09-21 11:21:14,919 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-21 11:21:14,919 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 55 [2020-09-21 11:21:14,919 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:14,921 INFO L225 Difference]: With dead ends: 132 [2020-09-21 11:21:14,921 INFO L226 Difference]: Without dead ends: 75 [2020-09-21 11:21:14,922 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-09-21 11:21:14,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-21 11:21:14,932 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 69. [2020-09-21 11:21:14,932 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-09-21 11:21:14,934 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 103 transitions. [2020-09-21 11:21:14,934 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 103 transitions. Word has length 55 [2020-09-21 11:21:14,934 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:14,935 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 103 transitions. [2020-09-21 11:21:14,935 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:14,935 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 103 transitions. [2020-09-21 11:21:14,936 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-21 11:21:14,936 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:14,936 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:14,937 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-21 11:21:14,937 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:14,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:14,937 INFO L82 PathProgramCache]: Analyzing trace with hash -1156896337, now seen corresponding path program 1 times [2020-09-21 11:21:14,937 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:14,938 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1825342498] [2020-09-21 11:21:14,938 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:14,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,965 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,965 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,965 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 93 [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:14,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:14,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:14,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:14,987 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:14,987 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:14,987 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:14,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:14,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:14,989 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:14,990 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:15,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,019 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,019 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,019 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-21 11:21:15,020 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:15,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-09-21 11:21:15,021 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,067 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,068 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,068 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,068 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:15,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-21 11:21:15,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-21 11:21:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:15,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,106 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,106 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,106 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,107 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:15,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:15,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:15,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,130 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,131 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,131 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,131 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,132 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:15,132 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:15,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:15,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,148 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,148 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,149 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,149 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:15,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,149 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:15,150 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,156 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,156 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,156 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,157 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:15,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:15,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,168 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,168 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,168 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,168 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:15,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-09-21 11:21:15,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,175 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,176 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,177 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,177 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,177 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,179 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:15,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,182 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,182 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,182 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 0 [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,211 INFO L134 CoverageAnalysis]: Checked inductivity of 81 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-21 11:21:15,212 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1825342498] [2020-09-21 11:21:15,212 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:15,212 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-21 11:21:15,212 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662624193] [2020-09-21 11:21:15,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-21 11:21:15,213 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:15,213 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-21 11:21:15,214 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-21 11:21:15,214 INFO L87 Difference]: Start difference. First operand 69 states and 103 transitions. Second operand 9 states. [2020-09-21 11:21:15,363 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:15,363 INFO L93 Difference]: Finished difference Result 98 states and 165 transitions. [2020-09-21 11:21:15,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-21 11:21:15,364 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 68 [2020-09-21 11:21:15,364 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:15,366 INFO L225 Difference]: With dead ends: 98 [2020-09-21 11:21:15,366 INFO L226 Difference]: Without dead ends: 94 [2020-09-21 11:21:15,367 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2020-09-21 11:21:15,367 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2020-09-21 11:21:15,379 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 79. [2020-09-21 11:21:15,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 79 states. [2020-09-21 11:21:15,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 128 transitions. [2020-09-21 11:21:15,381 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 128 transitions. Word has length 68 [2020-09-21 11:21:15,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:15,381 INFO L479 AbstractCegarLoop]: Abstraction has 79 states and 128 transitions. [2020-09-21 11:21:15,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-21 11:21:15,382 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 128 transitions. [2020-09-21 11:21:15,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-21 11:21:15,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:15,384 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:15,384 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-21 11:21:15,384 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:15,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:15,384 INFO L82 PathProgramCache]: Analyzing trace with hash 1229769625, now seen corresponding path program 2 times [2020-09-21 11:21:15,385 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:15,385 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [781573360] [2020-09-21 11:21:15,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:15,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,418 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,418 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,418 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:15,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-21 11:21:15,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:15,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,449 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,449 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,449 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,449 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,450 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:15,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,480 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:15,481 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,481 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,481 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-09-21 11:21:15,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:15,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:21:15,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:15,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,496 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,517 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:15,517 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,517 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,518 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 64 [2020-09-21 11:21:15,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,518 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-21 11:21:15,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:15,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-21 11:21:15,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,544 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,559 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:15,559 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,559 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,559 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:15,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:15,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:15,561 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,627 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:15,627 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,627 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,628 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:15,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-21 11:21:15,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:15,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:15,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,684 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,684 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,684 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,684 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:15,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:15,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,692 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,693 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,693 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,693 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:15,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:15,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:15,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,701 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,701 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,702 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,702 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,702 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,702 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:15,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:15,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:15,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,714 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:15,714 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,714 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,715 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-21 11:21:15,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-21 11:21:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:15,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:15,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,742 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 51 [2020-09-21 11:21:15,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,748 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,748 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,748 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,748 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:15,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 43 [2020-09-21 11:21:15,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,759 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,759 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,759 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,759 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:15,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:15,766 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,767 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,767 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,767 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,767 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:15,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,772 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,773 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,773 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,773 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:15,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,774 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:15,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:15,778 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:15,778 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:15,779 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:15,779 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:15,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:15,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:15,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:15,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:15,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:15,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:15,800 INFO L134 CoverageAnalysis]: Checked inductivity of 193 backedges. 44 proven. 55 refuted. 0 times theorem prover too weak. 94 trivial. 0 not checked. [2020-09-21 11:21:15,801 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [781573360] [2020-09-21 11:21:15,801 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:15,801 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-21 11:21:15,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1575456367] [2020-09-21 11:21:15,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-21 11:21:15,802 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:15,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-21 11:21:15,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-21 11:21:15,803 INFO L87 Difference]: Start difference. First operand 79 states and 128 transitions. Second operand 10 states. [2020-09-21 11:21:16,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:16,087 INFO L93 Difference]: Finished difference Result 170 states and 331 transitions. [2020-09-21 11:21:16,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-21 11:21:16,087 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 96 [2020-09-21 11:21:16,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:16,089 INFO L225 Difference]: With dead ends: 170 [2020-09-21 11:21:16,089 INFO L226 Difference]: Without dead ends: 93 [2020-09-21 11:21:16,091 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=164, Unknown=0, NotChecked=0, Total=210 [2020-09-21 11:21:16,091 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-09-21 11:21:16,102 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 87. [2020-09-21 11:21:16,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 87 states. [2020-09-21 11:21:16,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 141 transitions. [2020-09-21 11:21:16,104 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 141 transitions. Word has length 96 [2020-09-21 11:21:16,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:16,104 INFO L479 AbstractCegarLoop]: Abstraction has 87 states and 141 transitions. [2020-09-21 11:21:16,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-21 11:21:16,104 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 141 transitions. [2020-09-21 11:21:16,106 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 11:21:16,106 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:16,107 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:16,107 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-21 11:21:16,107 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:16,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:16,107 INFO L82 PathProgramCache]: Analyzing trace with hash 1113650782, now seen corresponding path program 2 times [2020-09-21 11:21:16,108 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:16,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124932230] [2020-09-21 11:21:16,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:16,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,146 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,147 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,147 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,147 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 146 [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-21 11:21:16,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 69 [2020-09-21 11:21:16,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-21 11:21:16,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,179 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,180 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,180 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,180 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-21 11:21:16,180 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:16,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-21 11:21:16,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,224 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,225 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,225 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,225 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 134 [2020-09-21 11:21:16,226 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-21 11:21:16,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:16,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-21 11:21:16,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:21:16,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,289 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,289 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,289 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,289 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,290 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 99 [2020-09-21 11:21:16,290 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,290 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-21 11:21:16,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-21 11:21:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-21 11:21:16,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-21 11:21:16,291 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,340 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:16,341 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,341 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,341 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:16,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-09-21 11:21:16,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-21 11:21:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,343 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-21 11:21:16,343 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,384 FATAL L256 erpolLogProxyWrapper]: Difference in size: 2 [2020-09-21 11:21:16,384 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,385 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,385 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-21 11:21:16,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-21 11:21:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,427 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,428 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,428 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,428 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:16,429 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,429 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:16,429 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,429 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-21 11:21:16,430 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:16,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,458 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,458 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,458 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,459 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:16,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:16,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:16,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:16,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:16,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:16,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,467 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,467 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,468 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,468 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:16,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-21 11:21:16,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:16,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:16,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 37 [2020-09-21 11:21:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,487 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,487 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,487 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,488 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,488 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-21 11:21:16,488 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-21 11:21:16,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-21 11:21:16,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-21 11:21:16,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-21 11:21:16,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:16,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,531 FATAL L256 erpolLogProxyWrapper]: Difference in size: 1 [2020-09-21 11:21:16,532 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,532 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,532 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:16,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-21 11:21:16,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-21 11:21:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-21 11:21:16,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,594 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,594 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,594 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,595 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:16,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:16,596 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:16,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,602 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,602 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,602 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,603 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:16,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-21 11:21:16,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,607 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-21 11:21:16,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,611 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,611 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,611 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,611 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:16,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,612 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-21 11:21:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-21 11:21:16,613 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 78 [2020-09-21 11:21:16,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,630 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,630 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,630 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,630 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-21 11:21:16,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:16,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 25 [2020-09-21 11:21:16,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:16,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-21 11:21:16,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,644 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,644 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,644 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,644 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-21 11:21:16,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:16,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-21 11:21:16,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-21 11:21:16,651 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-21 11:21:16,652 FATAL L256 erpolLogProxyWrapper]: Difference in size: 0 [2020-09-21 11:21:16,652 FATAL L256 erpolLogProxyWrapper]: Difference in depth: 0 [2020-09-21 11:21:16,652 FATAL L256 erpolLogProxyWrapper]: Difference in width: 0 [2020-09-21 11:21:16,653 FATAL L256 erpolLogProxyWrapper]: Timeout: Unlimited (no timeout set) [2020-09-21 11:21:16,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-09-21 11:21:16,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-21 11:21:16,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-21 11:21:16,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: FIRST [2020-09-21 11:21:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-21 11:21:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-21 11:21:16,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-21 11:21:16,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-21 11:21:16,682 INFO L134 CoverageAnalysis]: Checked inductivity of 270 backedges. 59 proven. 96 refuted. 0 times theorem prover too weak. 115 trivial. 0 not checked. [2020-09-21 11:21:16,683 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124932230] [2020-09-21 11:21:16,683 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-21 11:21:16,683 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-21 11:21:16,683 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775737144] [2020-09-21 11:21:16,684 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-21 11:21:16,684 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-21 11:21:16,685 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-21 11:21:16,685 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-21 11:21:16,685 INFO L87 Difference]: Start difference. First operand 87 states and 141 transitions. Second operand 12 states. [2020-09-21 11:21:17,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-21 11:21:17,062 INFO L93 Difference]: Finished difference Result 192 states and 399 transitions. [2020-09-21 11:21:17,063 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-21 11:21:17,063 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 109 [2020-09-21 11:21:17,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-21 11:21:17,066 INFO L225 Difference]: With dead ends: 192 [2020-09-21 11:21:17,066 INFO L226 Difference]: Without dead ends: 105 [2020-09-21 11:21:17,068 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 34 SyntacticMatches, 2 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-09-21 11:21:17,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-21 11:21:17,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 96. [2020-09-21 11:21:17,088 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 96 states. [2020-09-21 11:21:17,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 151 transitions. [2020-09-21 11:21:17,090 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 151 transitions. Word has length 109 [2020-09-21 11:21:17,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-21 11:21:17,092 INFO L479 AbstractCegarLoop]: Abstraction has 96 states and 151 transitions. [2020-09-21 11:21:17,092 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-21 11:21:17,092 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 151 transitions. [2020-09-21 11:21:17,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 110 [2020-09-21 11:21:17,094 INFO L414 BasicCegarLoop]: Found error trace [2020-09-21 11:21:17,094 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 6, 6, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-21 11:21:17,094 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-21 11:21:17,095 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-21 11:21:17,095 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-21 11:21:17,095 INFO L82 PathProgramCache]: Analyzing trace with hash -1540036056, now seen corresponding path program 3 times [2020-09-21 11:21:17,095 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-21 11:21:17,096 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1274964297] [2020-09-21 11:21:17,096 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-21 11:21:17,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-21 11:21:17,136 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-21 11:21:17,136 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-21 11:21:17,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-21 11:21:17,181 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.09 11:21:17 BoogieIcfgContainer [2020-09-21 11:21:17,181 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-21 11:21:17,189 INFO L168 Benchmark]: Toolchain (without parser) took 6750.08 ms. Allocated memory was 138.4 MB in the beginning and 329.3 MB in the end (delta: 190.8 MB). Free memory was 101.3 MB in the beginning and 266.7 MB in the end (delta: -165.4 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,190 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,190 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.63 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,191 INFO L168 Benchmark]: Boogie Preprocessor took 118.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,192 INFO L168 Benchmark]: RCFGBuilder took 361.40 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 167.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,201 INFO L168 Benchmark]: TraceAbstraction took 5921.84 ms. Allocated memory was 201.9 MB in the beginning and 329.3 MB in the end (delta: 127.4 MB). Free memory was 166.6 MB in the beginning and 266.7 MB in the end (delta: -100.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. [2020-09-21 11:21:17,207 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 119.9 MB in the beginning and 119.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 337.63 ms. Allocated memory is still 138.4 MB. Free memory was 100.7 MB in the beginning and 91.1 MB in the end (delta: 9.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 118.75 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 91.1 MB in the beginning and 180.5 MB in the end (delta: -89.4 MB). Peak memory consumption was 13.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 361.40 ms. Allocated memory is still 201.9 MB. Free memory was 180.5 MB in the beginning and 167.3 MB in the end (delta: 13.2 MB). Peak memory consumption was 13.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 5921.84 ms. Allocated memory was 201.9 MB in the beginning and 329.3 MB in the end (delta: 127.4 MB). Free memory was 166.6 MB in the beginning and 266.7 MB in the end (delta: -100.1 MB). Peak memory consumption was 27.3 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 39]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L36] int x = 5; [L37] CALL, EXPR fibo1(x) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND TRUE n < 1 [L9] return 0; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND FALSE !(n < 1) [L20] COND FALSE !(n == 1) [L23] CALL, EXPR fibo1(n-1) [L8] COND FALSE !(n < 1) [L10] COND FALSE !(n == 1) [L13] CALL, EXPR fibo2(n-1) [L18] COND FALSE !(n < 1) [L20] COND TRUE n == 1 [L21] return 1; [L13] RET, EXPR fibo2(n-1) [L13] CALL, EXPR fibo2(n-2) [L18] COND TRUE n < 1 [L19] return 0; [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L23] RET, EXPR fibo1(n-1) [L23] CALL, EXPR fibo1(n-2) [L8] COND FALSE !(n < 1) [L10] COND TRUE n == 1 [L11] return 1; [L23] RET, EXPR fibo1(n-2) [L23] return fibo1(n-1) + fibo1(n-2); [L13] RET, EXPR fibo2(n-2) [L13] return fibo2(n-1) + fibo2(n-2); [L37] RET, EXPR fibo1(x) [L37] int result = fibo1(x); [L38] COND TRUE result == 5 [L39] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 33 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 5.7s, OverallIterations: 13, TraceHistogramMax: 9, AutomataDifference: 2.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 333 SDtfs, 273 SDslu, 1257 SDs, 0 SdLazy, 1142 SolverSat, 137 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 1.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 304 GetRequests, 197 SyntacticMatches, 3 SemanticMatches, 104 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 1.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=96occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 12 MinimizatonAttempts, 56 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 691 NumberOfCodeBlocks, 691 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 570 ConstructedInterpolants, 0 QuantifiedInterpolants, 93206 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 2 PerfectInterpolantSequences, 466/693 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 incorrect! Received shutdown request...