/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=BIGGEST --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_5-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:25:17,123 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:25:17,127 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:25:17,153 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:25:17,153 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:25:17,154 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:25:17,156 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:25:17,158 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:25:17,160 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:25:17,161 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:25:17,162 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:25:17,164 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:25:17,164 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:25:17,165 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:25:17,167 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:25:17,168 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:25:17,169 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:25:17,170 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:25:17,172 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:25:17,174 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:25:17,175 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:25:17,176 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:25:17,178 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:25:17,179 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:25:17,181 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:25:17,181 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:25:17,182 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:25:17,183 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:25:17,183 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:25:17,184 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:25:17,184 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:25:17,185 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:25:17,186 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:25:17,187 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:25:17,188 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:25:17,189 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:25:17,190 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:25:17,190 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:25:17,190 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:25:17,191 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:25:17,192 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:25:17,193 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 20:25:17,222 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:25:17,222 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:25:17,223 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:25:17,223 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:25:17,223 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:25:17,224 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:25:17,224 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:25:17,225 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:25:17,225 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:25:17,226 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:25:17,226 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:17,227 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:25:17,227 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:25:17,227 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:25:17,227 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:25:17,228 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:25:17,228 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:25:17,228 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:25:17,228 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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;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=BIGGEST;log-additional-information=true; [2020-09-24 20:25:17,718 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:25:17,741 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:25:17,749 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:25:17,755 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:25:17,757 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:25:17,758 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 20:25:17,833 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcce06c39/dd6cecf21f8a45768f49e8f32ba92cee/FLAGf782a5009 [2020-09-24 20:25:18,357 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:25:18,358 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_5-1.c [2020-09-24 20:25:18,367 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcce06c39/dd6cecf21f8a45768f49e8f32ba92cee/FLAGf782a5009 [2020-09-24 20:25:18,679 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/fcce06c39/dd6cecf21f8a45768f49e8f32ba92cee [2020-09-24 20:25:18,694 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:25:18,701 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:25:18,702 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:18,702 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:25:18,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:25:18,708 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:18" (1/1) ... [2020-09-24 20:25:18,713 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@674884e5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:18, skipping insertion in model container [2020-09-24 20:25:18,713 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:25:18" (1/1) ... [2020-09-24 20:25:18,723 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:25:18,748 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:25:18,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:18,979 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:25:18,995 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:25:19,012 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:25:19,012 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19 WrapperNode [2020-09-24 20:25:19,012 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:25:19,013 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:25:19,013 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:25:19,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:25:19,030 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,030 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,036 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,036 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,040 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,043 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,044 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... [2020-09-24 20:25:19,046 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:25:19,047 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:25:19,047 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:25:19,047 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:25:19,048 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:25:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:25:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:25:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:25:19,202 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:25:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:25:19,202 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:25:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:25:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:25:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:25:19,203 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:25:19,437 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:25:19,437 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:25:19,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:19 BoogieIcfgContainer [2020-09-24 20:25:19,442 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:25:19,444 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:25:19,444 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:25:19,447 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:25:19,448 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:25:18" (1/3) ... [2020-09-24 20:25:19,449 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609cb67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:19, skipping insertion in model container [2020-09-24 20:25:19,449 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:25:19" (2/3) ... [2020-09-24 20:25:19,450 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@609cb67c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:25:19, skipping insertion in model container [2020-09-24 20:25:19,450 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:25:19" (3/3) ... [2020-09-24 20:25:19,452 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_5-1.c [2020-09-24 20:25:19,464 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:25:19,472 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:25:19,494 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:25:19,524 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:25:19,524 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:25:19,524 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:25:19,525 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:25:19,525 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:25:19,525 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:25:19,525 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:25:19,525 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:25:19,549 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:25:19,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:25:19,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:19,558 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:19,558 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:19,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:19,565 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:25:19,574 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:19,575 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1462486598] [2020-09-24 20:25:19,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:19,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:19,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:19,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:19,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:25:19,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:19,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-09-24 20:25:19,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:19,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:25:19,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:25:19,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:25:19,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:19,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:19,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:19,820 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:19,820 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:19,821 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:19,821 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:25:19,821 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:19,821 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:19,822 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:19,822 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:19,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:19,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:19,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:19,852 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:19,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:19,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:19,853 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 20:25:19,853 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:19,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:19,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:19,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:19,885 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:25:19,886 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1462486598] [2020-09-24 20:25:19,889 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:19,890 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:19,891 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948548842] [2020-09-24 20:25:19,899 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:19,899 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:19,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:19,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:19,928 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:25:20,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:20,114 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:25:20,115 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:25:20,117 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:25:20,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:20,128 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:25:20,129 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:25:20,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:25:20,150 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:25:20,183 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:25:20,185 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:20,187 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:20,189 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:25:20,189 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:20,189 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:20,190 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:20,190 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:20,192 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:25:20,192 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:20,193 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:20,193 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:25:20,193 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:20,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:20,194 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:25:20,194 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:20,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236880487] [2020-09-24 20:25:20,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:20,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:20,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:20,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:20,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:25:20,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:20,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-24 20:25:20,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:25:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:20,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:20,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:20,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:20,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:20,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:20,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:20,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:20,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:25:20,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:20,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:20,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:20,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:25:20,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:20,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:20,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:20,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:20,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:20,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:20,403 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 20:25:20,403 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:20,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:20,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:20,404 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:20,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 20:25:20,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1236880487] [2020-09-24 20:25:20,438 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:25:20,438 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:25:20,438 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [337119762] [2020-09-24 20:25:20,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:25:20,441 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:20,441 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:25:20,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:25:20,442 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:25:20,509 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:20,510 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:25:20,510 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:25:20,511 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:25:20,511 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:20,512 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:25:20,512 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:25:20,514 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:25:20,515 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:25:20,521 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:25:20,521 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:25:20,523 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:25:20,523 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:25:20,523 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:20,523 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:25:20,524 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:25:20,524 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:25:20,525 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:25:20,525 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:20,526 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] [2020-09-24 20:25:20,526 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:25:20,526 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:20,527 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:20,527 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:25:20,527 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:20,527 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [878058616] [2020-09-24 20:25:20,528 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:20,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:20,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:20,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:20,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:25:21,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:21,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 637 [2020-09-24 20:25:21,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:25:21,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:25:21,185 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:25:21,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:21,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:21,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:21,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:25:21,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:21,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:21,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:21,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:21,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:21,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:25:21,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:21,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-09-24 20:25:21,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:21,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:25:21,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:21,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:21,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:21,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:21,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:21,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:25:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:21,626 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:21,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:21,648 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:21,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:21,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:21,660 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:21,660 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:25:21,660 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:21,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:21,661 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:21,661 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:21,668 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 20:25:21,668 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [878058616] [2020-09-24 20:25:21,669 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:21,669 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:25:21,669 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [847426298] [2020-09-24 20:25:21,670 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:25:21,670 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:21,670 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:25:21,671 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:25:21,671 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:25:21,812 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:21,812 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 20:25:21,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:21,813 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:25:21,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:21,816 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:25:21,816 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:25:21,817 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:21,817 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:25:21,825 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 20:25:21,825 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:25:21,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:25:21,827 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:25:21,828 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:21,828 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:25:21,828 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:25:21,828 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:25:21,830 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:25:21,830 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:21,831 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] [2020-09-24 20:25:21,831 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:25:21,831 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:21,831 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:21,831 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:25:21,832 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:21,832 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [971049095] [2020-09-24 20:25:21,832 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:21,839 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:21,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:21,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:25:22,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:25:22,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-24 20:25:22,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:22,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:25:22,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:25:22,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:22,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:22,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:22,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:22,367 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:25:22,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:22,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:22,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:22,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:22,379 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:25:22,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:22,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 145 [2020-09-24 20:25:22,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:25:22,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:25:22,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:25:22,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 10 [2020-09-24 20:25:22,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:22,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:22,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:22,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 20:25:22,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:22,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:25:22,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:22,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,602 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,637 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:22,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:22,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:22,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 20:25:22,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:25:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:22,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:22,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:22,660 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 20:25:22,661 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [971049095] [2020-09-24 20:25:22,662 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:22,662 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:25:22,663 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768151888] [2020-09-24 20:25:22,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:25:22,664 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:22,664 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:25:22,666 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:25:22,666 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-24 20:25:22,816 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:22,818 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2020-09-24 20:25:22,819 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:25:22,819 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 20:25:22,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:22,824 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:25:22,824 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 20:25:22,826 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=56, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:22,827 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 20:25:22,843 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 20:25:22,843 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:25:22,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-09-24 20:25:22,850 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 35 [2020-09-24 20:25:22,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:22,850 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-09-24 20:25:22,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:25:22,851 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-09-24 20:25:22,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:25:22,857 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:22,857 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:22,858 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:25:22,858 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:22,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:22,860 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 20:25:22,860 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:22,860 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1714864653] [2020-09-24 20:25:22,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:22,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:22,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:22,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:23,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:23,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:23,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:27,881 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:27,881 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:25:27,881 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:25:27,881 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:25:27,882 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:25:27,882 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-24 20:25:27,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:27,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:27,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:27,906 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:27,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:27,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:27,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:27,907 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:27,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:27,908 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:27,908 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:27,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:27,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:27,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:27,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:27,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:28,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,833 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:30,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:25:30,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:25:30,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2914 [2020-09-24 20:25:30,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:30,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:25:30,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:30,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:30,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:30,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:30,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:31,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:25:31,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:31,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-09-24 20:25:31,166 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:31,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:25:31,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:31,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:31,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:31,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:31,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:31,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:31,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:25:31,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:31,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:31,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:31,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:31,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:31,216 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,224 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:31,225 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:31,225 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:31,226 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:25:31,226 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:31,226 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:25:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:31,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:31,228 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:31,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:25:31,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:31,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:31,258 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:25:31,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:31,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:31,271 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 11 proven. 26 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-09-24 20:25:31,272 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1714864653] [2020-09-24 20:25:31,272 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:31,272 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:31,273 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1733267687] [2020-09-24 20:25:31,274 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:31,274 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:31,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:31,275 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:31,275 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 8 states. [2020-09-24 20:25:31,447 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:31,447 INFO L93 Difference]: Finished difference Result 92 states and 138 transitions. [2020-09-24 20:25:31,448 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-24 20:25:31,448 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 20:25:31,449 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:31,451 INFO L225 Difference]: With dead ends: 92 [2020-09-24 20:25:31,451 INFO L226 Difference]: Without dead ends: 58 [2020-09-24 20:25:31,453 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-09-24 20:25:31,454 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-24 20:25:31,463 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 54. [2020-09-24 20:25:31,463 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:25:31,465 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 71 transitions. [2020-09-24 20:25:31,465 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 71 transitions. Word has length 51 [2020-09-24 20:25:31,465 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:31,466 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 71 transitions. [2020-09-24 20:25:31,466 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:31,466 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 71 transitions. [2020-09-24 20:25:31,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 20:25:31,468 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:31,469 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:31,469 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:25:31,469 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:31,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:31,470 INFO L82 PathProgramCache]: Analyzing trace with hash 182663806, now seen corresponding path program 2 times [2020-09-24 20:25:31,470 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:31,470 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [278148961] [2020-09-24 20:25:31,470 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:31,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:31,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,542 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:31,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:32,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:34,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:36,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:36,507 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 20:25:36,507 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 20:25:36,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5027 [2020-09-24 20:25:36,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:36,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:25:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 20:25:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:25:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 20:25:36,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:36,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:36,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:36,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:36,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:36,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:36,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:36,533 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:36,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:36,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:36,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:25:36,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:36,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:36,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:36,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:36,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:36,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:37,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:41,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:25:41,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:25:41,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:41,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:41,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:41,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:41,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:42,268 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,128 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:25:43,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:25:43,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1523 [2020-09-24 20:25:43,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:25:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:43,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 20:25:43,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:43,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:43,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:25:43,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:43,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:43,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:43,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:25:43,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:25:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:43,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:43,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:25:43,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:43,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:43,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 20:25:43,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:43,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:25:43,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:25:43,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,359 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,359 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:43,360 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:43,360 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-24 20:25:43,360 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:43,360 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:43,361 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:43,361 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,367 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 45 [2020-09-24 20:25:43,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:43,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:43,373 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:43,373 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 20:25:43,373 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 20:25:43,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:43,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:43,388 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 33 proven. 37 refuted. 0 times theorem prover too weak. 47 trivial. 0 not checked. [2020-09-24 20:25:43,388 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [278148961] [2020-09-24 20:25:43,389 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:43,389 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 20:25:43,389 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1251003811] [2020-09-24 20:25:43,390 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 20:25:43,390 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:43,390 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 20:25:43,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=63, Unknown=0, NotChecked=0, Total=90 [2020-09-24 20:25:43,391 INFO L87 Difference]: Start difference. First operand 54 states and 71 transitions. Second operand 10 states. [2020-09-24 20:25:43,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:43,487 INFO L93 Difference]: Finished difference Result 102 states and 144 transitions. [2020-09-24 20:25:43,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:25:43,487 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 20:25:43,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:43,489 INFO L225 Difference]: With dead ends: 102 [2020-09-24 20:25:43,489 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 20:25:43,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 17 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 28 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=51, Invalid=105, Unknown=0, NotChecked=0, Total=156 [2020-09-24 20:25:43,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 20:25:43,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 20:25:43,498 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:25:43,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 69 transitions. [2020-09-24 20:25:43,500 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 69 transitions. Word has length 69 [2020-09-24 20:25:43,500 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:43,500 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 69 transitions. [2020-09-24 20:25:43,500 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 20:25:43,501 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 69 transitions. [2020-09-24 20:25:43,503 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-09-24 20:25:43,503 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:43,503 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:43,503 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:25:43,504 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:43,504 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:43,504 INFO L82 PathProgramCache]: Analyzing trace with hash 1505694539, now seen corresponding path program 3 times [2020-09-24 20:25:43,504 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:43,504 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [778202833] [2020-09-24 20:25:43,505 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:43,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:43,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,678 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:43,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:44,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:44,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:48,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-24 20:25:48,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-09-24 20:25:48,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:48,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:25:48,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:48,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:48,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:25:48,533 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:48,533 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:25:48,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:25:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:48,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:25:48,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:48,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:25:48,542 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:48,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,591 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:48,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:49,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:49,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:52,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:53,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:25:53,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:53,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:53,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:53,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:53,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,102 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:25:55,102 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:25:55,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1524 [2020-09-24 20:25:55,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:25:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:25:55,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:55,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,313 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:25:55,314 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:25:55,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:55,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:25:55,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:55,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:25:55,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:25:55,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:25:55,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:25:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:55,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:25:55,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:55,378 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,378 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:25:55,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:55,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:25:55,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:25:55,393 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:25:55,393 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:25:55,393 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:25:55,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:25:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:25:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:25:55,394 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:25:55,394 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:25:55,404 INFO L134 CoverageAnalysis]: Checked inductivity of 123 backedges. 15 proven. 60 refuted. 0 times theorem prover too weak. 48 trivial. 0 not checked. [2020-09-24 20:25:55,405 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [778202833] [2020-09-24 20:25:55,405 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:25:55,405 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:25:55,406 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1603957222] [2020-09-24 20:25:55,407 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:25:55,408 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:25:55,408 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:25:55,408 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:25:55,409 INFO L87 Difference]: Start difference. First operand 54 states and 69 transitions. Second operand 8 states. [2020-09-24 20:25:55,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:25:55,537 INFO L93 Difference]: Finished difference Result 120 states and 176 transitions. [2020-09-24 20:25:55,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-24 20:25:55,537 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 70 [2020-09-24 20:25:55,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:25:55,541 INFO L225 Difference]: With dead ends: 120 [2020-09-24 20:25:55,541 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 20:25:55,542 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=47, Invalid=85, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:25:55,542 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 20:25:55,551 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 62. [2020-09-24 20:25:55,552 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-09-24 20:25:55,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 81 transitions. [2020-09-24 20:25:55,553 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 81 transitions. Word has length 70 [2020-09-24 20:25:55,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:25:55,554 INFO L479 AbstractCegarLoop]: Abstraction has 62 states and 81 transitions. [2020-09-24 20:25:55,554 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:25:55,554 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 81 transitions. [2020-09-24 20:25:55,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 160 [2020-09-24 20:25:55,557 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:25:55,557 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 15, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:25:55,557 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:25:55,557 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:25:55,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:25:55,558 INFO L82 PathProgramCache]: Analyzing trace with hash -602580317, now seen corresponding path program 4 times [2020-09-24 20:25:55,558 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:25:55,558 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [197353303] [2020-09-24 20:25:55,558 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:25:55,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:25:55,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:55,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:56,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:57,077 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:25:59,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,591 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,591 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 200 [2020-09-24 20:26:00,591 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:26:00,591 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5010 [2020-09-24 20:26:00,592 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-24 20:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:26:00,592 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 20:26:00,592 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,614 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:26:00,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,616 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:00,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:26:00,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:00,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:26:00,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:26:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:26:00,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:00,619 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:26:00,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:00,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:00,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:01,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:04,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:05,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 186 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-24 20:26:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:05,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:05,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:05,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:05,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:07,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:10,495 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:26:10,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:26:10,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4828 [2020-09-24 20:26:10,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:26:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:26:10,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 20:26:10,496 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:10,514 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:10,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:10,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:10,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1367 [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:26:11,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:11,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:26:11,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:11,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:11,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:11,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,932 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:11,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:26:12,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:26:12,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 262 [2020-09-24 20:26:12,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:26:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:26:12,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:26:12,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:12,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:26:12,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 20:26:12,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:26:12,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:26:12,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:26:12,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:26:12,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:26:12,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:26:12,254 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:12,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:26:12,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:26:12,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:26:12,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:12,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:26:12,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:26:12,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:26:12,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:26:12,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-24 20:26:12,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:26:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:26:12,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:26:12,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:26:12,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:26:12,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 64 [2020-09-24 20:26:12,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:26:12,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:12,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:26:13,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking...