/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=WIDEST --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 03:09:13,944 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 03:09:13,949 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 03:09:13,995 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 03:09:13,995 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 03:09:13,996 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 03:09:13,998 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 03:09:14,000 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 03:09:14,002 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 03:09:14,003 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 03:09:14,004 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 03:09:14,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 03:09:14,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 03:09:14,006 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 03:09:14,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 03:09:14,009 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 03:09:14,010 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 03:09:14,011 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 03:09:14,013 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 03:09:14,015 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 03:09:14,017 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 03:09:14,018 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 03:09:14,019 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 03:09:14,020 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 03:09:14,023 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 03:09:14,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 03:09:14,024 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 03:09:14,025 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 03:09:14,025 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 03:09:14,026 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 03:09:14,026 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 03:09:14,027 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 03:09:14,028 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 03:09:14,029 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 03:09:14,030 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 03:09:14,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 03:09:14,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 03:09:14,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 03:09:14,032 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 03:09:14,033 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 03:09:14,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 03:09:14,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 03:09:14,062 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 03:09:14,062 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 03:09:14,063 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 03:09:14,063 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 03:09:14,064 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 03:09:14,064 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 03:09:14,064 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 03:09:14,064 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 03:09:14,065 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 03:09:14,065 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 03:09:14,065 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 03:09:14,065 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 03:09:14,065 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 03:09:14,066 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 03:09:14,066 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 03:09:14,066 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 03:09:14,066 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 03:09:14,066 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 03:09:14,067 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 03:09:14,067 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 03:09:14,067 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 03:09:14,067 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:14,068 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 03:09:14,068 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 03:09:14,068 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 03:09:14,068 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 03:09:14,068 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 03:09:14,069 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 03:09:14,069 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 03:09:14,069 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=WIDEST;log-additional-information=true; [2020-09-25 03:09:14,570 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 03:09:14,596 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 03:09:14,601 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 03:09:14,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 03:09:14,605 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 03:09:14,606 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 03:09:14,699 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd87c2e60/eb00e0e82e4d4603ad1a9a6101160e99/FLAGe09fdd043 [2020-09-25 03:09:15,235 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 03:09:15,236 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_10-1.c [2020-09-25 03:09:15,245 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd87c2e60/eb00e0e82e4d4603ad1a9a6101160e99/FLAGe09fdd043 [2020-09-25 03:09:15,567 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fd87c2e60/eb00e0e82e4d4603ad1a9a6101160e99 [2020-09-25 03:09:15,581 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 03:09:15,587 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 03:09:15,591 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:15,591 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 03:09:15,595 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 03:09:15,596 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63cc40f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15, skipping insertion in model container [2020-09-25 03:09:15,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,612 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 03:09:15,640 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 03:09:15,858 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:15,864 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 03:09:15,880 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 03:09:15,896 INFO L208 MainTranslator]: Completed translation [2020-09-25 03:09:15,897 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15 WrapperNode [2020-09-25 03:09:15,897 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 03:09:15,898 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 03:09:15,898 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 03:09:15,898 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 03:09:15,916 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,916 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,922 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,922 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,926 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,929 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,930 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... [2020-09-25 03:09:15,931 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 03:09:15,932 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 03:09:15,932 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 03:09:15,932 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 03:09:15,933 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 03:09:16,092 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 03:09:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 03:09:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-25 03:09:16,093 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 03:09:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 03:09:16,093 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 03:09:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-25 03:09:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 03:09:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 03:09:16,094 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 03:09:16,315 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 03:09:16,316 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 03:09:16,322 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:16 BoogieIcfgContainer [2020-09-25 03:09:16,322 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 03:09:16,323 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 03:09:16,324 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 03:09:16,328 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 03:09:16,328 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 03:09:15" (1/3) ... [2020-09-25 03:09:16,329 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:16, skipping insertion in model container [2020-09-25 03:09:16,329 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 03:09:15" (2/3) ... [2020-09-25 03:09:16,330 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2226e1f2 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 03:09:16, skipping insertion in model container [2020-09-25 03:09:16,330 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 03:09:16" (3/3) ... [2020-09-25 03:09:16,332 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_10-1.c [2020-09-25 03:09:16,346 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 03:09:16,358 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 03:09:16,389 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 03:09:16,434 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 03:09:16,434 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 03:09:16,434 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 03:09:16,435 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 03:09:16,435 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 03:09:16,435 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 03:09:16,435 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 03:09:16,436 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 03:09:16,469 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-25 03:09:16,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 03:09:16,479 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:16,481 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:16,481 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:16,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:16,490 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-25 03:09:16,503 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:16,503 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1159804191] [2020-09-25 03:09:16,504 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:16,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:16,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:16,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 03:09:16,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:16,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-09-25 03:09:16,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 03:09:16,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:16,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 03:09:16,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:16,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:16,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:16,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:16,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:16,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:16,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:16,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:16,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:16,930 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:16,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:16,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:16,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:16,953 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:16,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:16,954 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:16,954 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:16,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:16,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:16,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:16,980 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:16,981 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1159804191] [2020-09-25 03:09:16,983 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:16,984 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:16,985 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353028427] [2020-09-25 03:09:16,995 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:16,996 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:17,015 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:17,016 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:17,020 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-25 03:09:17,135 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:17,135 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-25 03:09:17,136 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:17,137 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 03:09:17,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:17,151 INFO L225 Difference]: With dead ends: 44 [2020-09-25 03:09:17,151 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 03:09:17,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:17,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 03:09:17,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 03:09:17,208 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:17,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:17,212 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-25 03:09:17,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:17,213 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:17,213 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:17,213 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:17,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-25 03:09:17,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:17,216 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 03:09:17,217 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 03:09:17,217 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:17,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:17,218 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-25 03:09:17,218 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:17,219 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [566635388] [2020-09-25 03:09:17,219 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:17,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:17,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:17,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-25 03:09:17,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:17,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 03:09:17,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:17,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-25 03:09:17,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:17,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 03:09:17,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:17,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:17,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:17,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:17,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:17,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 03:09:17,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:17,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:17,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:17,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 03:09:17,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:17,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:17,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,563 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:17,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:17,564 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:17,564 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 03:09:17,564 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:17,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:17,565 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:17,565 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:17,589 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 03:09:17,590 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [566635388] [2020-09-25 03:09:17,590 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:17,590 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 03:09:17,591 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [454325939] [2020-09-25 03:09:17,593 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 03:09:17,593 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:17,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 03:09:17,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 03:09:17,594 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-25 03:09:17,634 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:17,634 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-25 03:09:17,635 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:17,635 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-25 03:09:17,635 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:17,637 INFO L225 Difference]: With dead ends: 36 [2020-09-25 03:09:17,637 INFO L226 Difference]: Without dead ends: 30 [2020-09-25 03:09:17,638 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:17,639 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-25 03:09:17,645 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-25 03:09:17,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 03:09:17,647 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-25 03:09:17,647 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-25 03:09:17,648 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:17,648 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-25 03:09:17,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 03:09:17,648 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-25 03:09:17,650 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-25 03:09:17,650 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:17,650 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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 03:09:17,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 03:09:17,651 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:17,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:17,651 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-25 03:09:17,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:17,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [6007880] [2020-09-25 03:09:17,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:17,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:17,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:17,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-25 03:09:19,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:19,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1910 [2020-09-25 03:09:19,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:19,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:19,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:19,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:19,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:19,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:19,615 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:19,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:19,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:19,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:19,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:19,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:19,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:19,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:19,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:19,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:09:19,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:19,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 330 [2020-09-25 03:09:19,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:19,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 03:09:19,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:20,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,016 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,017 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,017 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:20,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,018 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:20,019 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:20,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:20,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:20,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:20,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:09:20,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:20,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:20,046 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:20,053 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 03:09:20,054 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [6007880] [2020-09-25 03:09:20,054 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 03:09:20,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 03:09:20,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1437971228] [2020-09-25 03:09:20,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 03:09:20,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:20,056 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 03:09:20,056 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-25 03:09:20,056 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-25 03:09:20,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:20,150 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-09-25 03:09:20,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 03:09:20,151 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-25 03:09:20,152 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:20,153 INFO L225 Difference]: With dead ends: 47 [2020-09-25 03:09:20,154 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 03:09:20,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:20,155 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 03:09:20,163 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-09-25 03:09:20,163 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 03:09:20,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-25 03:09:20,165 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-25 03:09:20,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:20,166 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-25 03:09:20,166 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 03:09:20,166 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-25 03:09:20,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:20,168 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:20,168 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:09:20,169 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 03:09:20,169 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:20,169 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:20,170 INFO L82 PathProgramCache]: Analyzing trace with hash 795081563, now seen corresponding path program 1 times [2020-09-25 03:09:20,170 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:20,170 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1338660994] [2020-09-25 03:09:20,170 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:20,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:20,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:20,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:23,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 03:09:23,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3330 [2020-09-25 03:09:23,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-25 03:09:23,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:23,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:23,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:23,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:23,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:23,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:23,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:23,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:23,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:23,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:23,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:23,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:24,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:24,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 897 [2020-09-25 03:09:24,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 03:09:24,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:24,495 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:24,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:24,507 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:24,507 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:24,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:24,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:24,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:24,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:24,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:24,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 03:09:24,556 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:24,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:24,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:24,564 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 03:09:24,564 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1338660994] [2020-09-25 03:09:24,564 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:24,565 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:24,565 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [526048864] [2020-09-25 03:09:24,566 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:24,566 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:24,566 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:24,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:24,567 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 8 states. [2020-09-25 03:09:24,700 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:24,700 INFO L93 Difference]: Finished difference Result 64 states and 84 transitions. [2020-09-25 03:09:24,701 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:24,701 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 34 [2020-09-25 03:09:24,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:24,704 INFO L225 Difference]: With dead ends: 64 [2020-09-25 03:09:24,704 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 03:09:24,705 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:24,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 03:09:24,715 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 44. [2020-09-25 03:09:24,715 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:24,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:24,717 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:24,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:24,718 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:24,718 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:24,718 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:24,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-25 03:09:24,721 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:24,721 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 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] [2020-09-25 03:09:24,721 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 03:09:24,721 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:24,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:24,722 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 2 times [2020-09-25 03:09:24,722 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:24,722 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1946717416] [2020-09-25 03:09:24,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:24,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:24,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:24,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 03:09:25,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:25,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 902 [2020-09-25 03:09:25,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:25,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:25,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 03:09:25,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:25,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,657 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,657 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:25,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 03:09:25,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:25,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:25,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:25,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:09:25,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-09-25 03:09:25,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:09:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:09:25,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:25,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:25,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:25,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 03:09:25,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:09:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:25,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,935 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:25,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:25,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:25,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:25,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:25,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:25,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 03:09:25,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:09:25,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:25,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:25,945 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:25,964 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 03:09:25,964 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1946717416] [2020-09-25 03:09:25,965 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:25,965 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-25 03:09:25,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1080905886] [2020-09-25 03:09:25,965 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-25 03:09:25,967 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:25,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-25 03:09:25,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-25 03:09:25,968 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 6 states. [2020-09-25 03:09:26,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:26,059 INFO L93 Difference]: Finished difference Result 62 states and 82 transitions. [2020-09-25 03:09:26,060 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 03:09:26,060 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-09-25 03:09:26,061 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:26,062 INFO L225 Difference]: With dead ends: 62 [2020-09-25 03:09:26,063 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 03:09:26,065 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:26,066 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 03:09:26,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 44. [2020-09-25 03:09:26,082 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-25 03:09:26,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 58 transitions. [2020-09-25 03:09:26,086 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 58 transitions. Word has length 34 [2020-09-25 03:09:26,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:26,087 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 58 transitions. [2020-09-25 03:09:26,087 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-25 03:09:26,087 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 58 transitions. [2020-09-25 03:09:26,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 03:09:26,089 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:26,093 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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 03:09:26,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 03:09:26,093 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:26,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:26,094 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-25 03:09:26,094 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:26,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1597027622] [2020-09-25 03:09:26,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:26,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:26,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:26,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 03:09:27,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-25 03:09:27,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1536 [2020-09-25 03:09:27,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:27,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-25 03:09:27,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:27,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:27,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:27,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:27,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:27,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:27,670 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:27,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:27,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:27,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:27,672 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:27,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:27,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:27,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:28,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:28,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 441 [2020-09-25 03:09:28,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 03:09:28,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:28,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:28,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:28,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:28,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:28,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:28,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:28,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:28,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:28,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 03:09:28,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:28,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:28,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:28,221 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-25 03:09:28,222 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1597027622] [2020-09-25 03:09:28,222 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:28,222 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 03:09:28,223 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1755842125] [2020-09-25 03:09:28,223 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 03:09:28,224 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:28,224 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 03:09:28,224 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 03:09:28,224 INFO L87 Difference]: Start difference. First operand 44 states and 58 transitions. Second operand 8 states. [2020-09-25 03:09:28,346 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:28,346 INFO L93 Difference]: Finished difference Result 66 states and 92 transitions. [2020-09-25 03:09:28,347 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:09:28,347 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 35 [2020-09-25 03:09:28,348 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:28,349 INFO L225 Difference]: With dead ends: 66 [2020-09-25 03:09:28,349 INFO L226 Difference]: Without dead ends: 60 [2020-09-25 03:09:28,350 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-09-25 03:09:28,351 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-09-25 03:09:28,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 48. [2020-09-25 03:09:28,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:09:28,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 70 transitions. [2020-09-25 03:09:28,362 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 70 transitions. Word has length 35 [2020-09-25 03:09:28,363 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:28,363 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 70 transitions. [2020-09-25 03:09:28,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 03:09:28,363 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 70 transitions. [2020-09-25 03:09:28,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 03:09:28,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:28,366 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 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 03:09:28,366 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 03:09:28,367 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:28,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:28,367 INFO L82 PathProgramCache]: Analyzing trace with hash -538497119, now seen corresponding path program 2 times [2020-09-25 03:09:28,367 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:28,368 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [556381280] [2020-09-25 03:09:28,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:28,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:28,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:28,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:32,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,375 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 03:09:33,376 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-25 03:09:33,376 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:09:33,376 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:33,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:33,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-09-25 03:09:33,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:33,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:33,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:33,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:33,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:33,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:33,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:33,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:33,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:33,420 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:33,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:33,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:34,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 03:09:37,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 03:09:37,755 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4332 [2020-09-25 03:09:37,755 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-25 03:09:37,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:37,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:37,811 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:37,811 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:37,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:37,812 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:37,812 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:37,812 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:37,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:37,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:37,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:37,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 03:09:38,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 03:09:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-09-25 03:09:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 03:09:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:38,320 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,331 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,332 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:38,332 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,332 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:38,332 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,332 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,333 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:38,333 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:38,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:38,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:38,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:38,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:09:38,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:38,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:38,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:38,380 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2020-09-25 03:09:38,380 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [556381280] [2020-09-25 03:09:38,381 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:38,381 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:38,381 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [849337914] [2020-09-25 03:09:38,382 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:38,382 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:38,382 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:38,382 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=101, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:38,383 INFO L87 Difference]: Start difference. First operand 48 states and 70 transitions. Second operand 12 states. [2020-09-25 03:09:38,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:38,589 INFO L93 Difference]: Finished difference Result 90 states and 128 transitions. [2020-09-25 03:09:38,589 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 03:09:38,589 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 53 [2020-09-25 03:09:38,590 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:38,591 INFO L225 Difference]: With dead ends: 90 [2020-09-25 03:09:38,591 INFO L226 Difference]: Without dead ends: 84 [2020-09-25 03:09:38,593 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:09:38,593 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-09-25 03:09:38,604 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 54. [2020-09-25 03:09:38,604 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-25 03:09:38,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 80 transitions. [2020-09-25 03:09:38,606 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 80 transitions. Word has length 53 [2020-09-25 03:09:38,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:38,606 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 80 transitions. [2020-09-25 03:09:38,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:38,606 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 80 transitions. [2020-09-25 03:09:38,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:09:38,608 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:38,609 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:38,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 03:09:38,609 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:38,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:38,609 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 3 times [2020-09-25 03:09:38,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:38,610 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1838646527] [2020-09-25 03:09:38,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:38,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:38,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,650 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:38,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:39,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:09:43,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:43,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:09:43,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:43,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:43,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:43,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:43,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:43,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:43,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:43,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:43,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:43,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:43,636 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:43,639 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:43,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:43,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:44,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:44,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 932 [2020-09-25 03:09:44,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:44,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 03:09:44,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,649 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:44,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 03:09:44,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:44,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:44,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,767 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:44,767 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,767 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:44,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,768 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:44,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:44,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:44,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:44,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:44,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:44,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 03:09:44,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:44,788 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:44,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:44,812 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 2 proven. 20 refuted. 0 times theorem prover too weak. 32 trivial. 0 not checked. [2020-09-25 03:09:44,812 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1838646527] [2020-09-25 03:09:44,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:44,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:09:44,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1434041098] [2020-09-25 03:09:44,815 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:09:44,816 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:44,816 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:09:44,817 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:09:44,817 INFO L87 Difference]: Start difference. First operand 54 states and 80 transitions. Second operand 11 states. [2020-09-25 03:09:44,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:44,962 INFO L93 Difference]: Finished difference Result 103 states and 171 transitions. [2020-09-25 03:09:44,965 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 03:09:44,965 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-09-25 03:09:44,965 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:44,968 INFO L225 Difference]: With dead ends: 103 [2020-09-25 03:09:44,968 INFO L226 Difference]: Without dead ends: 97 [2020-09-25 03:09:44,970 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:09:44,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-09-25 03:09:44,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 70. [2020-09-25 03:09:44,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 70 states. [2020-09-25 03:09:45,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70 states to 70 states and 120 transitions. [2020-09-25 03:09:45,000 INFO L78 Accepts]: Start accepts. Automaton has 70 states and 120 transitions. Word has length 52 [2020-09-25 03:09:45,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:45,001 INFO L479 AbstractCegarLoop]: Abstraction has 70 states and 120 transitions. [2020-09-25 03:09:45,003 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:09:45,003 INFO L276 IsEmpty]: Start isEmpty. Operand 70 states and 120 transitions. [2020-09-25 03:09:45,005 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-25 03:09:45,005 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:45,005 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:45,008 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 03:09:45,008 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:45,008 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:45,009 INFO L82 PathProgramCache]: Analyzing trace with hash 260731392, now seen corresponding path program 4 times [2020-09-25 03:09:45,009 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:45,009 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1495588130] [2020-09-25 03:09:45,009 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:45,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:45,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,125 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:45,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:46,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:48,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,017 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-25 03:09:50,018 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-25 03:09:50,018 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:50,018 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 03:09:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-25 03:09:50,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-25 03:09:50,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:50,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:50,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:50,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:50,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:50,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:50,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:50,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:50,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:50,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 03:09:50,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:50,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:50,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:50,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,822 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:53,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 03:09:53,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3760 [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 03:09:53,823 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:53,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:53,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:53,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:53,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:53,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:09:53,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:53,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:09:53,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:53,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:53,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 03:09:54,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:09:54,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 453 [2020-09-25 03:09:54,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 03:09:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 03:09:54,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:09:54,389 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:09:54,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:54,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 03:09:54,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 03:09:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 03:09:54,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:09:54,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:54,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:09:54,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:54,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 03:09:54,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:09:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:54,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 03:09:54,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:54,458 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 6 proven. 18 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 03:09:54,458 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1495588130] [2020-09-25 03:09:54,459 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:09:54,459 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 03:09:54,459 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [289110186] [2020-09-25 03:09:54,460 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 03:09:54,460 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:09:54,460 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 03:09:54,460 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-25 03:09:54,460 INFO L87 Difference]: Start difference. First operand 70 states and 120 transitions. Second operand 12 states. [2020-09-25 03:09:54,674 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:09:54,674 INFO L93 Difference]: Finished difference Result 129 states and 229 transitions. [2020-09-25 03:09:54,677 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 03:09:54,677 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-25 03:09:54,678 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:09:54,681 INFO L225 Difference]: With dead ends: 129 [2020-09-25 03:09:54,682 INFO L226 Difference]: Without dead ends: 123 [2020-09-25 03:09:54,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=74, Invalid=232, Unknown=0, NotChecked=0, Total=306 [2020-09-25 03:09:54,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2020-09-25 03:09:54,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 78. [2020-09-25 03:09:54,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 03:09:54,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 143 transitions. [2020-09-25 03:09:54,714 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 143 transitions. Word has length 52 [2020-09-25 03:09:54,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:09:54,715 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 143 transitions. [2020-09-25 03:09:54,715 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 03:09:54,715 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 143 transitions. [2020-09-25 03:09:54,719 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 69 [2020-09-25 03:09:54,720 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:09:54,720 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:09:54,720 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 03:09:54,720 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:09:54,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:09:54,721 INFO L82 PathProgramCache]: Analyzing trace with hash -2047777507, now seen corresponding path program 5 times [2020-09-25 03:09:54,721 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:09:54,721 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2053917688] [2020-09-25 03:09:54,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:09:54,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:54,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:54,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:55,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:56,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:59,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 03:09:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-25 03:09:59,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 03:09:59,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:59,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 03:09:59,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:59,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:09:59,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 03:09:59,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:09:59,743 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:09:59,744 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 03:09:59,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:09:59,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:09:59,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:00,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:01,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:02,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 03:10:04,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 03:10:04,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-25 03:10:04,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 03:10:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:04,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-09-25 03:10:04,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:04,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:04,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 03:10:04,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:04,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 03:10:04,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:04,803 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 03:10:04,803 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:04,824 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 03:10:04,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:04,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:04,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1009 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-09-25 03:10:05,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:05,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:05,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 03:10:05,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:05,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:05,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 03:10:05,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:05,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 03:10:05,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 03:10:05,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 03:10:05,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 03:10:05,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,955 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 03:10:05,956 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:05,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:05,961 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 03:10:05,961 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 03:10:05,962 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 03:10:05,962 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 03:10:05,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDEST [2020-09-25 03:10:05,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 03:10:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-25 03:10:05,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 03:10:05,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 03:10:05,971 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 33 proven. 47 refuted. 0 times theorem prover too weak. 34 trivial. 0 not checked. [2020-09-25 03:10:05,972 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2053917688] [2020-09-25 03:10:05,972 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 03:10:05,972 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 03:10:05,972 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1061339222] [2020-09-25 03:10:05,973 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 03:10:05,973 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 03:10:05,973 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 03:10:05,974 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 03:10:05,974 INFO L87 Difference]: Start difference. First operand 78 states and 143 transitions. Second operand 11 states. [2020-09-25 03:10:06,122 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 03:10:06,123 INFO L93 Difference]: Finished difference Result 126 states and 233 transitions. [2020-09-25 03:10:06,124 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-25 03:10:06,124 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 68 [2020-09-25 03:10:06,124 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 03:10:06,125 INFO L225 Difference]: With dead ends: 126 [2020-09-25 03:10:06,125 INFO L226 Difference]: Without dead ends: 54 [2020-09-25 03:10:06,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=68, Invalid=172, Unknown=0, NotChecked=0, Total=240 [2020-09-25 03:10:06,133 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-25 03:10:06,141 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 48. [2020-09-25 03:10:06,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 03:10:06,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 60 transitions. [2020-09-25 03:10:06,142 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 60 transitions. Word has length 68 [2020-09-25 03:10:06,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 03:10:06,142 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 60 transitions. [2020-09-25 03:10:06,142 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 03:10:06,143 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 60 transitions. [2020-09-25 03:10:06,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-25 03:10:06,146 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 03:10:06,146 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 03:10:06,147 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 03:10:06,147 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 03:10:06,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 03:10:06,147 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 6 times [2020-09-25 03:10:06,147 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 03:10:06,149 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787982874] [2020-09-25 03:10:06,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 03:10:06,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 03:10:06,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:06,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 03:10:08,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking...