/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_6-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:15:36,923 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:15:36,927 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:15:36,953 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:15:36,954 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:15:36,955 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:15:36,956 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:15:36,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:15:36,960 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:15:36,961 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:15:36,962 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:15:36,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:15:36,964 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:15:36,965 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:15:36,970 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:15:36,973 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:15:36,974 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:15:36,977 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:15:36,979 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:15:36,983 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:15:36,986 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:15:36,989 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:15:36,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:15:36,991 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:15:36,996 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:15:36,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:15:36,997 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:15:36,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:15:37,000 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:15:37,001 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:15:37,001 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:15:37,002 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:15:37,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:15:37,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:15:37,006 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:15:37,006 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:15:37,007 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:15:37,007 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:15:37,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:15:37,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:15:37,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:15:37,011 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 12:15:37,063 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:15:37,064 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:15:37,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:15:37,066 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:15:37,067 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:15:37,067 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:15:37,067 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:15:37,067 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:15:37,067 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:15:37,067 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:15:37,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:15:37,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:15:37,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:15:37,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:15:37,068 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:15:37,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:15:37,071 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:15:37,071 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:15:37,071 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:15:37,072 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:15:37,072 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:15:37,072 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:37,072 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:15:37,072 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:15:37,073 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:15:37,073 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:15:37,073 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:15:37,073 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:15:37,074 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:15:37,074 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:15:37,558 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:15:37,578 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:15:37,585 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:15:37,587 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:15:37,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:15:37,589 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 12:15:37,663 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2a6c8d05/544bbf718be440f99420cfcc8d3bf079/FLAGa0a80b916 [2020-09-25 12:15:38,225 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:15:38,226 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_6-1.c [2020-09-25 12:15:38,233 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2a6c8d05/544bbf718be440f99420cfcc8d3bf079/FLAGa0a80b916 [2020-09-25 12:15:38,595 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/b2a6c8d05/544bbf718be440f99420cfcc8d3bf079 [2020-09-25 12:15:38,610 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:15:38,617 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:15:38,618 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:38,618 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:15:38,623 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:15:38,624 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,628 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1b3b83ba and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38, skipping insertion in model container [2020-09-25 12:15:38,629 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,638 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:15:38,663 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:15:38,881 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:38,887 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:15:38,909 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:15:38,926 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:15:38,927 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38 WrapperNode [2020-09-25 12:15:38,927 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:15:38,928 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:15:38,928 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:15:38,928 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:15:38,942 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:38,943 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,027 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,028 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,034 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,038 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,043 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... [2020-09-25 12:15:39,045 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:15:39,046 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:15:39,046 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:15:39,046 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:15:39,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:15:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:15:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:15:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-25 12:15:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-25 12:15:39,121 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:15:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:15:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:15:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-25 12:15:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-25 12:15:39,122 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:15:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:15:39,123 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:15:39,398 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:15:39,398 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:15:39,404 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:39 BoogieIcfgContainer [2020-09-25 12:15:39,405 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:15:39,417 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:15:39,417 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:15:39,421 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:15:39,421 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:15:38" (1/3) ... [2020-09-25 12:15:39,434 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db399ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:39, skipping insertion in model container [2020-09-25 12:15:39,434 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:15:38" (2/3) ... [2020-09-25 12:15:39,435 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1db399ab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:15:39, skipping insertion in model container [2020-09-25 12:15:39,435 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:15:39" (3/3) ... [2020-09-25 12:15:39,438 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_6-1.c [2020-09-25 12:15:39,461 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:15:39,475 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:15:39,500 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:15:39,535 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:15:39,536 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:15:39,536 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:15:39,536 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:15:39,536 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:15:39,536 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:15:39,536 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:15:39,537 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:15:39,558 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:15:39,566 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 12:15:39,566 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:39,567 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:39,568 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:39,574 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:39,574 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-25 12:15:39,584 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:39,584 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [784416265] [2020-09-25 12:15:39,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:39,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:15:39,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 12:15:39,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,767 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:39,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 12:15:39,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:39,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:39,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:39,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:39,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:39,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:39,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:39,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:39,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:39,874 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:39,875 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:39,875 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:39,875 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 12:15:39,875 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:39,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:39,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:39,915 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:15:39,916 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [784416265] [2020-09-25 12:15:39,919 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:39,919 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:39,921 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601704597] [2020-09-25 12:15:39,929 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:39,929 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:39,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:39,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:39,952 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:15:40,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:40,093 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-25 12:15:40,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:40,096 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 12:15:40,097 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:40,115 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:40,115 INFO L226 Difference]: Without dead ends: 42 [2020-09-25 12:15:40,120 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 [2020-09-25 12:15:40,142 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-25 12:15:40,175 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-25 12:15:40,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:40,179 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:40,181 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-25 12:15:40,182 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:40,182 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:40,182 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:40,183 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:40,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 12:15:40,185 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:40,185 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:40,186 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:15:40,186 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:40,187 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:40,187 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-25 12:15:40,187 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:40,188 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836245633] [2020-09-25 12:15:40,188 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:40,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 12:15:40,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 12:15:40,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:40,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:40,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:40,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:40,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:40,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:40,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,375 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:40,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:40,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-25 12:15:40,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:40,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:40,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:40,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:40,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-09-25 12:15:40,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:40,440 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:15:40,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:40,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:40,441 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:40,463 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 12:15:40,463 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836245633] [2020-09-25 12:15:40,464 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:40,464 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:15:40,464 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1443639741] [2020-09-25 12:15:40,466 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:15:40,467 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:40,467 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:15:40,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:15:40,467 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-25 12:15:40,542 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:40,542 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-25 12:15:40,542 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:15:40,543 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 12:15:40,543 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:40,545 INFO L225 Difference]: With dead ends: 50 [2020-09-25 12:15:40,545 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 12:15:40,546 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 [2020-09-25 12:15:40,547 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 12:15:40,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-25 12:15:40,555 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-25 12:15:40,556 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-25 12:15:40,557 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-25 12:15:40,557 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:40,557 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-25 12:15:40,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:15:40,558 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-25 12:15:40,559 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 12:15:40,560 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:40,560 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:40,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:15:40,561 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:40,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:40,561 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-25 12:15:40,561 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:40,562 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1433525636] [2020-09-25 12:15:40,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:40,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:40,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 12:15:41,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:41,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 612 [2020-09-25 12:15:41,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:41,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:15:41,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:41,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:41,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,213 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:41,213 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,215 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:41,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:41,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:41,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:41,453 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:15:41,453 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 12:15:41,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:41,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:41,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:41,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:41,490 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,490 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:15:41,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:15:41,491 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:41,496 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:41,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:41,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:41,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 12:15:41,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:41,509 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:41,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:41,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:41,536 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:41,536 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1433525636] [2020-09-25 12:15:41,537 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:15:41,537 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 12:15:41,537 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1383505013] [2020-09-25 12:15:41,538 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:41,538 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:41,538 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:41,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:41,539 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 7 states. [2020-09-25 12:15:41,673 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:41,673 INFO L93 Difference]: Finished difference Result 58 states and 69 transitions. [2020-09-25 12:15:41,674 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:41,674 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 12:15:41,675 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:41,676 INFO L225 Difference]: With dead ends: 58 [2020-09-25 12:15:41,677 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 12:15:41,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:41,678 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 12:15:41,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 50. [2020-09-25 12:15:41,687 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-09-25 12:15:41,689 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 60 transitions. [2020-09-25 12:15:41,689 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 60 transitions. Word has length 33 [2020-09-25 12:15:41,690 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:41,690 INFO L479 AbstractCegarLoop]: Abstraction has 50 states and 60 transitions. [2020-09-25 12:15:41,690 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:41,690 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 60 transitions. [2020-09-25 12:15:41,692 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 12:15:41,692 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:41,693 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:41,693 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:15:41,693 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:41,693 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:41,693 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-25 12:15:41,694 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:41,694 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [983304942] [2020-09-25 12:15:41,694 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:41,701 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:41,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:41,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,231 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 12:15:42,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:42,232 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-25 12:15:42,232 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:42,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 12:15:42,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,249 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:42,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:42,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:42,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,253 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:42,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:42,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:42,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:15:42,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:15:42,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 12:15:42,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,664 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:42,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:15:42,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:42,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:42,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:42,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:15:42,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,713 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:42,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:42,738 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:15:42,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,743 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:42,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:42,754 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:42,754 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:42,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 12:15:42,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:42,755 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:42,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:15:42,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:15:42,764 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 12:15:42,765 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [983304942] [2020-09-25 12:15:42,765 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:42,765 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:42,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1627779827] [2020-09-25 12:15:42,766 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:42,766 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:42,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:42,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:42,767 INFO L87 Difference]: Start difference. First operand 50 states and 60 transitions. Second operand 7 states. [2020-09-25 12:15:42,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:42,922 INFO L93 Difference]: Finished difference Result 110 states and 146 transitions. [2020-09-25 12:15:42,926 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:42,927 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-25 12:15:42,927 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:42,929 INFO L225 Difference]: With dead ends: 110 [2020-09-25 12:15:42,930 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:42,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:42,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:42,951 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:42,952 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:42,956 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:42,956 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 35 [2020-09-25 12:15:42,957 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:42,957 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:42,957 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:42,957 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 12:15:42,965 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:42,968 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:42,968 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:15:42,969 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:42,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:42,969 INFO L82 PathProgramCache]: Analyzing trace with hash 758565477, now seen corresponding path program 1 times [2020-09-25 12:15:42,970 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:42,970 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1011286678] [2020-09-25 12:15:42,971 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:42,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:42,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:43,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:47,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:47,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 12:15:47,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:47,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 12:15:47,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:47,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:47,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:15:47,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:48,004 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:48,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:48,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:48,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:48,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:15:48,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:48,010 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:48,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:48,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:15:48,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:48,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:48,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:48,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:51,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-25 12:15:51,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:15:51,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3630 [2020-09-25 12:15:51,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:51,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:15:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:15:51,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:15:51,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:51,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:51,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:51,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:51,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:15:51,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:15:51,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-09-25 12:15:51,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:51,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:15:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:51,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:15:51,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:51,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:15:51,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:51,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:51,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:51,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:51,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:15:51,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:51,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:51,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:51,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:51,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 12 [2020-09-25 12:15:51,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:15:51,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:51,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:51,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:15:51,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:51,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:51,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:51,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:51,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:51,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:51,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:15:51,818 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:51,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:51,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:51,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:15:51,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:51,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 12:15:51,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:51,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:15:51,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:51,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:15:51,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:51,863 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 8 proven. 2 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-25 12:15:51,864 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1011286678] [2020-09-25 12:15:51,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:15:51,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:15:51,864 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1287901792] [2020-09-25 12:15:51,865 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:15:51,865 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:15:51,866 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:15:51,866 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:15:51,866 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 7 states. [2020-09-25 12:15:52,006 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:15:52,006 INFO L93 Difference]: Finished difference Result 72 states and 88 transitions. [2020-09-25 12:15:52,006 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 12:15:52,007 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 51 [2020-09-25 12:15:52,007 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:15:52,012 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:15:52,012 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 12:15:52,013 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:15:52,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 12:15:52,031 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-09-25 12:15:52,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 12:15:52,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-25 12:15:52,035 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 51 [2020-09-25 12:15:52,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:15:52,035 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-25 12:15:52,035 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:15:52,036 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-25 12:15:52,042 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 12:15:52,042 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:15:52,042 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:15:52,043 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:15:52,043 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:15:52,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:15:52,043 INFO L82 PathProgramCache]: Analyzing trace with hash 1879014210, now seen corresponding path program 1 times [2020-09-25 12:15:52,044 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:15:52,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [109788419] [2020-09-25 12:15:52,046 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:15:52,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:52,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:52,879 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:53,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:57,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 12:15:57,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 12:15:57,060 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 12:15:57,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:57,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:15:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:15:57,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 12:15:57,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:57,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:15:57,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:15:57,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:15:57,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:15:57,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:15:57,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:15:57,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:15:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:15:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:15:57,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:15:57,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:15:57,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:15:57,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:15:57,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:57,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:15:58,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:01,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-09-25 12:16:02,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:02,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:16:02,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:02,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:02,119 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 12:16:02,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:02,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:02,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:02,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:02,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:02,184 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,184 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:02,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:02,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:02,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:02,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:02,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:02,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:02,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 12:16:02,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 12:16:02,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:02,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 12:16:02,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,263 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:02,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:02,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:02,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:02,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:02,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:02,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:02,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:02,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 12:16:02,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:02,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:02,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:02,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 12:16:02,334 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:02,343 INFO L134 CoverageAnalysis]: Checked inductivity of 58 backedges. 25 proven. 10 refuted. 0 times theorem prover too weak. 23 trivial. 0 not checked. [2020-09-25 12:16:02,343 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [109788419] [2020-09-25 12:16:02,343 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:02,344 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:02,344 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [982157603] [2020-09-25 12:16:02,344 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:02,345 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:02,345 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:02,345 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:02,345 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 9 states. [2020-09-25 12:16:02,589 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:02,589 INFO L93 Difference]: Finished difference Result 82 states and 112 transitions. [2020-09-25 12:16:02,590 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:02,590 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 67 [2020-09-25 12:16:02,591 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:02,593 INFO L225 Difference]: With dead ends: 82 [2020-09-25 12:16:02,594 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 12:16:02,595 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=33, Invalid=99, Unknown=0, NotChecked=0, Total=132 [2020-09-25 12:16:02,595 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 12:16:02,628 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 66. [2020-09-25 12:16:02,628 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:16:02,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 87 transitions. [2020-09-25 12:16:02,630 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 87 transitions. Word has length 67 [2020-09-25 12:16:02,630 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:02,630 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 87 transitions. [2020-09-25 12:16:02,630 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:02,631 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 87 transitions. [2020-09-25 12:16:02,635 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-25 12:16:02,635 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:02,635 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:02,635 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:16:02,636 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:02,638 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:02,638 INFO L82 PathProgramCache]: Analyzing trace with hash -387134248, now seen corresponding path program 1 times [2020-09-25 12:16:02,638 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:02,638 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [888008161] [2020-09-25 12:16:02,639 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:02,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:02,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:02,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:03,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:04,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:05,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:06,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:07,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-25 12:16:07,655 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:07,655 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:16:07,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:07,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:07,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:07,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:07,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:07,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:07,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:07,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:07,671 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:07,672 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:07,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:07,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:07,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:07,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:08,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:09,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:11,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,685 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-25 12:16:12,685 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-25 12:16:12,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-25 12:16:12,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:12,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 12:16:12,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:12,737 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:12,963 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:12,963 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:12,963 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:16:12,963 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:12,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:12,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:12,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:12,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:13,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:13,005 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,005 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:13,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,008 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:13,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:13,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:16:13,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,016 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:13,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 12:16:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:13,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 12:16:13,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:13,084 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:13,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:13,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:13,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:13,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:13,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 12:16:13,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:13,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:16:13,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:13,097 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:13,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:13,098 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:13,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:13,107 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 9 proven. 26 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 12:16:13,107 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [888008161] [2020-09-25 12:16:13,107 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:13,108 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 12:16:13,108 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1028637792] [2020-09-25 12:16:13,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 12:16:13,109 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:13,109 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 12:16:13,109 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:16:13,109 INFO L87 Difference]: Start difference. First operand 66 states and 87 transitions. Second operand 9 states. [2020-09-25 12:16:13,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:13,389 INFO L93 Difference]: Finished difference Result 170 states and 262 transitions. [2020-09-25 12:16:13,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 12:16:13,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 69 [2020-09-25 12:16:13,391 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:13,397 INFO L225 Difference]: With dead ends: 170 [2020-09-25 12:16:13,397 INFO L226 Difference]: Without dead ends: 110 [2020-09-25 12:16:13,401 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=118, Unknown=0, NotChecked=0, Total=156 [2020-09-25 12:16:13,402 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 110 states. [2020-09-25 12:16:13,434 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 110 to 98. [2020-09-25 12:16:13,435 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 98 states. [2020-09-25 12:16:13,436 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 140 transitions. [2020-09-25 12:16:13,437 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 140 transitions. Word has length 69 [2020-09-25 12:16:13,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:13,437 INFO L479 AbstractCegarLoop]: Abstraction has 98 states and 140 transitions. [2020-09-25 12:16:13,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 12:16:13,438 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 140 transitions. [2020-09-25 12:16:13,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-09-25 12:16:13,443 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:13,443 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:13,443 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:16:13,443 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:13,444 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:13,445 INFO L82 PathProgramCache]: Analyzing trace with hash 1208671938, now seen corresponding path program 1 times [2020-09-25 12:16:13,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:13,446 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149509122] [2020-09-25 12:16:13,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:13,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:13,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:13,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:14,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:15,780 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:16,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:18,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-09-25 12:16:18,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-09-25 12:16:18,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:18,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:18,456 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:18,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 12:16:18,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:18,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:18,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:18,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:18,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:18,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:18,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:18,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:18,473 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:18,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:18,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:18,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:18,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:18,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:18,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:19,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,481 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 12:16:23,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 12:16:23,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:23,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,482 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:23,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:23,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 12:16:23,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:23,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:23,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:16:23,744 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:16:23,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 237 [2020-09-25 12:16:23,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,745 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:16:23,745 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,746 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:16:23,746 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:23,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:23,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:23,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:23,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:16:23,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:16:23,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:23,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:23,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:23,821 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:23,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:23,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:16:23,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:23,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:23,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:23,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:16:23,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 12:16:23,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:23,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:23,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 12:16:24,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 645 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 12:16:24,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:24,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:24,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:24,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:24,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:24,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:24,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 12:16:24,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:24,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:24,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:16:24,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:24,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 12:16:24,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:24,601 INFO L134 CoverageAnalysis]: Checked inductivity of 68 backedges. 10 proven. 26 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 12:16:24,601 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149509122] [2020-09-25 12:16:24,601 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:16:24,602 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 12:16:24,602 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [611331050] [2020-09-25 12:16:24,602 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 12:16:24,602 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:16:24,602 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 12:16:24,603 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-25 12:16:24,603 INFO L87 Difference]: Start difference. First operand 98 states and 140 transitions. Second operand 11 states. [2020-09-25 12:16:25,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:16:25,094 INFO L93 Difference]: Finished difference Result 238 states and 429 transitions. [2020-09-25 12:16:25,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 12:16:25,095 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 71 [2020-09-25 12:16:25,096 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:16:25,098 INFO L225 Difference]: With dead ends: 238 [2020-09-25 12:16:25,098 INFO L226 Difference]: Without dead ends: 137 [2020-09-25 12:16:25,101 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2020-09-25 12:16:25,101 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 137 states. [2020-09-25 12:16:25,117 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 137 to 127. [2020-09-25 12:16:25,117 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 127 states. [2020-09-25 12:16:25,119 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 185 transitions. [2020-09-25 12:16:25,119 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 185 transitions. Word has length 71 [2020-09-25 12:16:25,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:16:25,120 INFO L479 AbstractCegarLoop]: Abstraction has 127 states and 185 transitions. [2020-09-25 12:16:25,120 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 12:16:25,120 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 185 transitions. [2020-09-25 12:16:25,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 12:16:25,122 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:16:25,123 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:16:25,123 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:16:25,123 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:16:25,123 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:16:25,123 INFO L82 PathProgramCache]: Analyzing trace with hash 452106143, now seen corresponding path program 1 times [2020-09-25 12:16:25,124 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:16:25,124 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [652369109] [2020-09-25 12:16:25,124 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:16:25,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:25,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:25,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:30,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-25 12:16:30,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 12:16:30,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 12:16:30,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:30,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:16:30,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:30,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:30,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:16:30,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:16:30,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:16:30,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:30,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 12:16:30,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:30,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,447 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:30,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:32,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:33,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 17 [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:16:35,166 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 12:16:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 12:16:35,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 12:16:35,167 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:16:35,179 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:16:35,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:16:35,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:16:35,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking...