/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_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 20:23:53,829 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 20:23:53,834 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 20:23:53,875 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 20:23:53,876 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 20:23:53,887 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 20:23:53,889 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 20:23:53,891 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 20:23:53,893 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 20:23:53,894 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 20:23:53,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 20:23:53,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 20:23:53,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 20:23:53,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 20:23:53,900 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 20:23:53,901 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 20:23:53,902 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 20:23:53,903 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 20:23:53,905 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 20:23:53,907 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 20:23:53,908 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 20:23:53,910 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 20:23:53,911 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 20:23:53,912 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 20:23:53,914 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 20:23:53,915 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 20:23:53,915 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 20:23:53,916 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 20:23:53,917 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 20:23:53,918 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 20:23:53,918 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 20:23:53,919 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 20:23:53,920 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 20:23:53,921 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 20:23:53,922 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 20:23:53,922 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 20:23:53,923 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 20:23:53,923 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 20:23:53,924 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 20:23:53,925 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 20:23:53,926 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 20:23:53,927 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 20:23:53,952 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 20:23:53,952 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 20:23:53,954 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 20:23:53,954 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 20:23:53,954 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 20:23:53,954 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 20:23:53,955 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 20:23:53,955 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 20:23:53,955 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 20:23:53,955 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 20:23:53,955 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 20:23:53,956 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 20:23:53,956 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 20:23:53,956 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 20:23:53,956 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 20:23:53,956 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 20:23:53,957 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 20:23:53,957 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 20:23:53,957 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 20:23:53,957 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 20:23:53,957 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 20:23:53,958 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 20:23:53,958 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 20:23:53,958 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 20:23:53,958 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 20:23:53,959 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 20:23:53,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 20:23:53,959 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 20:23:53,959 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 20:23:53,959 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 20:23:54,409 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 20:23:54,436 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 20:23:54,441 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 20:23:54,446 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 20:23:54,447 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 20:23:54,448 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 20:23:54,544 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cbe27942/840d14e3153f45e1b20c21ccb982606a/FLAG3a54e9a1b [2020-09-24 20:23:55,074 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 20:23:55,075 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 20:23:55,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cbe27942/840d14e3153f45e1b20c21ccb982606a/FLAG3a54e9a1b [2020-09-24 20:23:55,420 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/5cbe27942/840d14e3153f45e1b20c21ccb982606a [2020-09-24 20:23:55,434 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 20:23:55,441 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 20:23:55,442 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:55,442 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 20:23:55,446 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 20:23:55,448 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,452 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7f58caab and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55, skipping insertion in model container [2020-09-24 20:23:55,453 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,462 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 20:23:55,487 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 20:23:55,719 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:55,724 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 20:23:55,741 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 20:23:55,756 INFO L208 MainTranslator]: Completed translation [2020-09-24 20:23:55,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55 WrapperNode [2020-09-24 20:23:55,757 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 20:23:55,758 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 20:23:55,758 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 20:23:55,758 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 20:23:55,774 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,775 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,781 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,781 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,785 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,788 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,789 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (1/1) ... [2020-09-24 20:23:55,790 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 20:23:55,791 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 20:23:55,791 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 20:23:55,791 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 20:23:55,792 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (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 20:23:55,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 20:23:55,953 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 20:23:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 20:23:55,954 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 20:23:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 20:23:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 20:23:55,954 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 20:23:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 20:23:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 20:23:55,955 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 20:23:56,162 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 20:23:56,162 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 20:23:56,168 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:56 BoogieIcfgContainer [2020-09-24 20:23:56,168 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 20:23:56,169 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 20:23:56,169 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 20:23:56,173 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 20:23:56,174 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 08:23:55" (1/3) ... [2020-09-24 20:23:56,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e2dd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:56, skipping insertion in model container [2020-09-24 20:23:56,175 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 08:23:55" (2/3) ... [2020-09-24 20:23:56,175 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@50e2dd8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 08:23:56, skipping insertion in model container [2020-09-24 20:23:56,176 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 08:23:56" (3/3) ... [2020-09-24 20:23:56,178 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-24 20:23:56,189 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 20:23:56,200 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 20:23:56,223 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 20:23:56,252 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 20:23:56,253 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 20:23:56,253 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 20:23:56,253 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 20:23:56,253 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 20:23:56,253 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 20:23:56,254 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 20:23:56,254 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 20:23:56,275 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 20:23:56,282 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 20:23:56,282 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:56,283 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:23:56,284 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:56,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:56,290 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 20:23:56,299 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:56,300 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1573585582] [2020-09-24 20:23:56,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:56,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:56,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 20:23:56,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:56,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 20:23:56,478 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:56,478 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 20:23:56,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:56,592 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:56,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:56,598 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:56,598 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:56,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:56,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:56,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:56,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:56,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:56,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:56,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:56,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:56,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:56,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:56,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-24 20:23:56,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:56,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:56,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:56,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:56,708 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 20:23:56,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1573585582] [2020-09-24 20:23:56,719 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:56,719 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:56,726 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1907404920] [2020-09-24 20:23:56,735 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:56,735 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:56,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:56,753 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:56,755 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 20:23:56,886 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:56,886 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 20:23:56,888 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:56,890 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 20:23:56,891 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:56,904 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:56,905 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 20:23:56,909 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:56,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 20:23:56,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 20:23:56,958 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:56,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:56,962 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 20:23:56,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:56,963 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:56,963 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:56,963 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:56,965 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 20:23:56,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:56,966 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 20:23:56,966 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 20:23:56,967 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:56,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:56,967 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 20:23:56,968 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:56,968 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006470447] [2020-09-24 20:23:56,968 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:56,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:56,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,071 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 20:23:57,072 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,072 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 20:23:57,072 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:57,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:57,073 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:57,099 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:57,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:57,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 20:23:57,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:57,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:57,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:57,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:57,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:57,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-24 20:23:57,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:57,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:57,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:57,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-24 20:23:57,210 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 20:23:57,210 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006470447] [2020-09-24 20:23:57,211 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 20:23:57,211 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 20:23:57,211 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1954930700] [2020-09-24 20:23:57,213 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 20:23:57,214 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:57,214 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 20:23:57,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 20:23:57,215 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 20:23:57,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:57,288 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 20:23:57,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 20:23:57,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 20:23:57,289 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:57,291 INFO L225 Difference]: With dead ends: 36 [2020-09-24 20:23:57,291 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 20:23:57,292 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 20:23:57,293 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 20:23:57,299 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 20:23:57,299 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 20:23:57,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 20:23:57,301 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 20:23:57,301 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:57,301 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 20:23:57,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 20:23:57,304 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 20:23:57,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 20:23:57,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:57,306 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 20:23:57,306 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 20:23:57,307 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:57,307 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:57,307 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 20:23:57,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:57,308 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371350068] [2020-09-24 20:23:57,308 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:57,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 20:23:57,964 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:57,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 640 [2020-09-24 20:23:57,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:57,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:23:57,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-24 20:23:57,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 20:23:57,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:57,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:57,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:57,989 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:57,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:57,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:57,990 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:23:57,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:57,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:57,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:57,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:57,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:57,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,223 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:23:58,223 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:23:58,223 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 222 [2020-09-24 20:23:58,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:58,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 20:23:58,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:58,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:58,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:58,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 20:23:58,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:23:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:58,283 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:23:58,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:23:58,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:23:58,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:23:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:23:58,319 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,325 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 20:23:58,326 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371350068] [2020-09-24 20:23:58,326 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:58,326 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 20:23:58,327 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1055925685] [2020-09-24 20:23:58,327 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 20:23:58,328 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:58,328 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 20:23:58,328 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 20:23:58,329 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 7 states. [2020-09-24 20:23:58,472 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:58,472 INFO L93 Difference]: Finished difference Result 44 states and 54 transitions. [2020-09-24 20:23:58,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 20:23:58,473 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-09-24 20:23:58,473 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:58,475 INFO L225 Difference]: With dead ends: 44 [2020-09-24 20:23:58,475 INFO L226 Difference]: Without dead ends: 38 [2020-09-24 20:23:58,476 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 20:23:58,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-24 20:23:58,485 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 36. [2020-09-24 20:23:58,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-24 20:23:58,487 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 44 transitions. [2020-09-24 20:23:58,487 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 44 transitions. Word has length 33 [2020-09-24 20:23:58,488 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:58,488 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 44 transitions. [2020-09-24 20:23:58,488 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 20:23:58,488 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 44 transitions. [2020-09-24 20:23:58,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 20:23:58,490 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:58,490 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 20:23:58,491 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 20:23:58,491 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:58,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:58,491 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 20:23:58,492 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:58,492 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [825250285] [2020-09-24 20:23:58,492 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:58,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 20:23:58,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:23:58,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-09-24 20:23:58,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:23:58,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:58,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:23:58,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:58,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:58,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:58,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:23:58,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:58,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:23:58,997 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:23:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:58,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:23:58,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:58,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:23:59,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 20:23:59,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:59,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-09-24 20:23:59,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:23:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:23:59,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 20:23:59,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:23:59,142 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:23:59,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:59,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:23:59,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 20:23:59,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:23:59,164 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:23:59,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:59,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:23:59,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:23:59,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:23:59,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:23:59,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:23:59,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:23:59,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:23:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:23:59,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:23:59,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:23:59,254 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 20:23:59,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [825250285] [2020-09-24 20:23:59,255 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:23:59,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 20:23:59,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [81630086] [2020-09-24 20:23:59,256 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 20:23:59,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:23:59,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 20:23:59,257 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 20:23:59,258 INFO L87 Difference]: Start difference. First operand 36 states and 44 transitions. Second operand 6 states. [2020-09-24 20:23:59,383 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:23:59,383 INFO L93 Difference]: Finished difference Result 76 states and 109 transitions. [2020-09-24 20:23:59,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 20:23:59,384 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 35 [2020-09-24 20:23:59,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:23:59,386 INFO L225 Difference]: With dead ends: 76 [2020-09-24 20:23:59,387 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 20:23:59,388 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 20:23:59,389 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 20:23:59,397 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 20:23:59,397 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 20:23:59,399 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 51 transitions. [2020-09-24 20:23:59,399 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 51 transitions. Word has length 35 [2020-09-24 20:23:59,400 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:23:59,400 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 51 transitions. [2020-09-24 20:23:59,400 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 20:23:59,400 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 51 transitions. [2020-09-24 20:23:59,403 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 20:23:59,403 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:23:59,403 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 20:23:59,404 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 20:23:59,404 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:23:59,404 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:23:59,404 INFO L82 PathProgramCache]: Analyzing trace with hash 1693530075, now seen corresponding path program 1 times [2020-09-24 20:23:59,405 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:23:59,405 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [84755101] [2020-09-24 20:23:59,405 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:23:59,412 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:23:59,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,488 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:23:59,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 20:24:04,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:24:04,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:04,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:24:04,419 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-24 20:24:04,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:04,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:04,433 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:04,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:04,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:04,437 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 20:24:04,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:04,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:04,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:04,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:04,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:04,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:04,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 20:24:05,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 20:24:05,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1057 [2020-09-24 20:24:05,509 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 20:24:05,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 20:24:05,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:05,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,601 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 20:24:05,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:05,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-09-24 20:24:05,602 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 20:24:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 20:24:05,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:05,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:05,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:05,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:05,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,665 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 20:24:05,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:05,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:05,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:05,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:05,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:05,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,685 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 20:24:05,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:05,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:05,726 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:05,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:05,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:05,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 20:24:05,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 20:24:05,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:05,729 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:05,729 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:05,754 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 26 proven. 12 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-24 20:24:05,755 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [84755101] [2020-09-24 20:24:05,756 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:05,756 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 20:24:05,757 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [848087429] [2020-09-24 20:24:05,758 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 20:24:05,758 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:05,758 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 20:24:05,759 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-24 20:24:05,759 INFO L87 Difference]: Start difference. First operand 40 states and 51 transitions. Second operand 8 states. [2020-09-24 20:24:05,948 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:05,948 INFO L93 Difference]: Finished difference Result 84 states and 116 transitions. [2020-09-24 20:24:05,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:24:05,951 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-09-24 20:24:05,952 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:05,953 INFO L225 Difference]: With dead ends: 84 [2020-09-24 20:24:05,953 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 20:24:05,958 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:05,959 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 20:24:05,970 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 46. [2020-09-24 20:24:05,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-24 20:24:05,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 54 transitions. [2020-09-24 20:24:05,972 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 54 transitions. Word has length 51 [2020-09-24 20:24:05,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:05,976 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 54 transitions. [2020-09-24 20:24:05,976 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 20:24:05,977 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 54 transitions. [2020-09-24 20:24:05,984 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 20:24:05,984 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:05,984 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:05,984 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 20:24:05,985 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:05,985 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:05,986 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 2 times [2020-09-24 20:24:05,986 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:05,986 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [970571007] [2020-09-24 20:24:05,986 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:05,994 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:06,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:06,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 20:24:07,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:07,700 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1699 [2020-09-24 20:24:07,700 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:24:07,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-09-24 20:24:07,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:07,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:07,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:07,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:07,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:07,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:07,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:07,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:09,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:09,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1677 [2020-09-24 20:24:09,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 20:24:09,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:09,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 20:24:09,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:09,447 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,693 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:09,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:09,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 20:24:09,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:09,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:09,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:09,737 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:09,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,747 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:09,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:09,748 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:09,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:24:09,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:09,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:09,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:09,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:09,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:24:09,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:09,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:09,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:09,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:09,802 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 11 proven. 28 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-24 20:24:09,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [970571007] [2020-09-24 20:24:09,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:09,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 20:24:09,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [152324689] [2020-09-24 20:24:09,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 20:24:09,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:09,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 20:24:09,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-24 20:24:09,805 INFO L87 Difference]: Start difference. First operand 46 states and 54 transitions. Second operand 9 states. [2020-09-24 20:24:09,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:09,916 INFO L93 Difference]: Finished difference Result 62 states and 76 transitions. [2020-09-24 20:24:09,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 20:24:09,917 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 20:24:09,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:09,919 INFO L225 Difference]: With dead ends: 62 [2020-09-24 20:24:09,919 INFO L226 Difference]: Without dead ends: 56 [2020-09-24 20:24:09,920 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-24 20:24:09,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-24 20:24:09,927 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 54. [2020-09-24 20:24:09,928 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 20:24:09,929 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 68 transitions. [2020-09-24 20:24:09,929 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 68 transitions. Word has length 52 [2020-09-24 20:24:09,930 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:09,930 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 68 transitions. [2020-09-24 20:24:09,930 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 20:24:09,930 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 68 transitions. [2020-09-24 20:24:09,932 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 20:24:09,932 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:09,932 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:09,933 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 20:24:09,933 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:09,933 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:09,933 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 3 times [2020-09-24 20:24:09,934 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:09,934 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2136016133] [2020-09-24 20:24:09,934 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:09,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:09,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:10,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:11,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:12,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 20:24:14,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 20:24:14,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-09-24 20:24:14,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:24:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 20:24:14,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-09-24 20:24:14,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:14,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:14,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:14,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:14,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:14,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:14,982 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:14,982 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:14,982 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:14,983 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:14,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:14,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:15,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:15,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:16,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:19,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,011 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:20,011 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 20:24:20,011 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 20:24:20,011 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 20:24:20,012 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-24 20:24:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 20:24:20,012 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-24 20:24:20,012 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:20,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:20,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:20,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,182 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:20,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:23,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,087 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:25,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-24 20:24:25,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 20:24:25,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 20:24:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:25,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:25,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:25,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:25,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-09-24 20:24:25,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:25,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:25,452 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:25,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:25,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:25,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 20:24:25,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:25,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:25,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:25,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:25,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:25,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:25,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 20:24:25,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:25,481 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:25,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:25,504 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:25,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:25,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:25,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 20:24:25,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:25,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:25,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:25,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:25,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:24:25,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:25,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:25,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:26,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:27,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:30,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 20:24:30,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 20:24:30,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:30,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 20:24:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:30,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 20:24:30,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:30,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:30,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:30,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:30,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:34,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 20:24:34,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:34,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4272 [2020-09-24 20:24:34,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-24 20:24:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:34,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 20:24:34,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:34,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:34,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:34,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:34,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 20:24:35,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 20:24:35,252 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:35,307 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:35,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:35,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 20:24:35,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 20:24:35,348 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 20:24:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 20:24:35,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:35,357 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 20:24:35,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 20:24:35,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 20:24:35,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:35,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,370 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 20:24:35,370 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 20:24:35,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 20:24:35,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:35,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:35,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:35,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 20:24:35,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:35,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:35,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:35,403 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 20:24:35,403 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:35,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 20:24:35,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 20:24:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:35,404 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 20:24:35,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:35,454 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 139 proven. 219 refuted. 0 times theorem prover too weak. 125 trivial. 0 not checked. [2020-09-24 20:24:35,455 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2136016133] [2020-09-24 20:24:35,455 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 20:24:35,455 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-24 20:24:35,456 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1870934887] [2020-09-24 20:24:35,458 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-24 20:24:35,458 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 20:24:35,458 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-24 20:24:35,458 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=193, Unknown=0, NotChecked=0, Total=240 [2020-09-24 20:24:35,459 INFO L87 Difference]: Start difference. First operand 54 states and 68 transitions. Second operand 16 states. [2020-09-24 20:24:35,949 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 20:24:35,949 INFO L93 Difference]: Finished difference Result 120 states and 178 transitions. [2020-09-24 20:24:35,950 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-09-24 20:24:35,950 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 123 [2020-09-24 20:24:35,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 20:24:35,952 INFO L225 Difference]: With dead ends: 120 [2020-09-24 20:24:35,953 INFO L226 Difference]: Without dead ends: 72 [2020-09-24 20:24:35,957 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 124 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=581, Unknown=0, NotChecked=0, Total=756 [2020-09-24 20:24:35,958 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-24 20:24:35,971 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 68. [2020-09-24 20:24:35,971 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 20:24:35,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 78 transitions. [2020-09-24 20:24:35,972 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 78 transitions. Word has length 123 [2020-09-24 20:24:35,974 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 20:24:35,974 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 78 transitions. [2020-09-24 20:24:35,974 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-24 20:24:35,974 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 78 transitions. [2020-09-24 20:24:35,976 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 141 [2020-09-24 20:24:35,976 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 20:24:35,976 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 12, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 5, 5, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 20:24:35,976 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 20:24:35,976 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 20:24:35,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 20:24:35,977 INFO L82 PathProgramCache]: Analyzing trace with hash -1618484333, now seen corresponding path program 4 times [2020-09-24 20:24:35,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 20:24:35,977 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1893580017] [2020-09-24 20:24:35,977 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 20:24:35,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:36,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:36,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:41,006 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-24 20:24:41,007 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:41,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 20:24:41,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:41,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,029 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:41,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 20:24:41,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 20:24:41,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 20:24:41,030 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 20:24:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 20:24:41,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 20:24:41,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:41,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 20:24:41,046 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:41,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:46,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 20:24:46,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-09-24 20:24:46,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 20:24:46,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 20:24:46,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: BIGGEST [2020-09-24 20:24:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 20:24:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 20:24:46,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 159 [2020-09-24 20:24:46,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 20:24:46,083 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 20:24:46,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 20:24:46,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:46,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:46,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:46,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 20:24:46,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking...