/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.4 --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/Fibonacci01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 13:21:22,819 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 13:21:22,823 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 13:21:22,855 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 13:21:22,856 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 13:21:22,864 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 13:21:22,865 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 13:21:22,869 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 13:21:22,871 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 13:21:22,874 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 13:21:22,876 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 13:21:22,877 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 13:21:22,877 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 13:21:22,880 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 13:21:22,883 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 13:21:22,885 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 13:21:22,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 13:21:22,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 13:21:22,889 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 13:21:22,897 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 13:21:22,899 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 13:21:22,900 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 13:21:22,902 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 13:21:22,902 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 13:21:22,917 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 13:21:22,917 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 13:21:22,917 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 13:21:22,918 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 13:21:22,922 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 13:21:22,923 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 13:21:22,923 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 13:21:22,924 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 13:21:22,925 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 13:21:22,926 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 13:21:22,927 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 13:21:22,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 13:21:22,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 13:21:22,932 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 13:21:22,932 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 13:21:22,933 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 13:21:22,934 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 13:21:22,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 13:21:22,977 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 13:21:22,977 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 13:21:22,978 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 13:21:22,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 13:21:22,979 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 13:21:22,979 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 13:21:22,979 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 13:21:22,979 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 13:21:22,980 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 13:21:22,980 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 13:21:22,980 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 13:21:22,980 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 13:21:22,980 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 13:21:22,981 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 13:21:22,981 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 13:21:22,981 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 13:21:22,981 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 13:21:22,981 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 13:21:22,981 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 13:21:22,982 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 13:21:22,982 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 13:21:22,982 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:22,982 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 13:21:22,983 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 13:21:22,983 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 13:21:22,983 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 13:21:22,983 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 13:21:22,983 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 13:21:22,984 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 13:21:22,984 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.4;log-additional-information=true; [2020-09-25 13:21:23,414 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 13:21:23,430 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 13:21:23,435 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 13:21:23,437 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 13:21:23,437 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 13:21:23,438 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 13:21:23,509 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f0e863/617ed7a5e2e848489271fb6de1210afc/FLAGdfc7b6b77 [2020-09-25 13:21:24,046 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 13:21:24,047 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/Fibonacci01-1.c [2020-09-25 13:21:24,055 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f0e863/617ed7a5e2e848489271fb6de1210afc/FLAGdfc7b6b77 [2020-09-25 13:21:24,396 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/468f0e863/617ed7a5e2e848489271fb6de1210afc [2020-09-25 13:21:24,409 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 13:21:24,415 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 13:21:24,416 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:24,416 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 13:21:24,420 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 13:21:24,422 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,426 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@75a18185 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24, skipping insertion in model container [2020-09-25 13:21:24,426 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,435 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 13:21:24,460 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 13:21:24,661 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:24,668 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 13:21:24,688 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 13:21:24,709 INFO L208 MainTranslator]: Completed translation [2020-09-25 13:21:24,710 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24 WrapperNode [2020-09-25 13:21:24,710 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 13:21:24,711 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 13:21:24,711 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 13:21:24,711 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 13:21:24,729 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,729 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,813 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,813 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,820 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,824 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,825 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... [2020-09-25 13:21:24,830 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 13:21:24,831 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 13:21:24,831 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 13:21:24,831 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 13:21:24,832 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 13:21:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 13:21:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 13:21:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure fibonacci [2020-09-25 13:21:24,905 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 13:21:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 13:21:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 13:21:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure fibonacci [2020-09-25 13:21:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 13:21:24,906 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 13:21:24,907 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 13:21:25,157 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 13:21:25,158 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 13:21:25,166 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:25 BoogieIcfgContainer [2020-09-25 13:21:25,167 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 13:21:25,176 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 13:21:25,177 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 13:21:25,189 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 13:21:25,189 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 01:21:24" (1/3) ... [2020-09-25 13:21:25,190 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098a70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:25, skipping insertion in model container [2020-09-25 13:21:25,190 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 01:21:24" (2/3) ... [2020-09-25 13:21:25,191 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5098a70e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 01:21:25, skipping insertion in model container [2020-09-25 13:21:25,191 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 01:21:25" (3/3) ... [2020-09-25 13:21:25,193 INFO L109 eAbstractionObserver]: Analyzing ICFG Fibonacci01-1.c [2020-09-25 13:21:25,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 13:21:25,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 13:21:25,247 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 13:21:25,277 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 13:21:25,277 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 13:21:25,277 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 13:21:25,277 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 13:21:25,277 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 13:21:25,278 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 13:21:25,278 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 13:21:25,278 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 13:21:25,299 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states. [2020-09-25 13:21:25,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 13:21:25,306 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:25,308 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:25,308 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:25,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:25,315 INFO L82 PathProgramCache]: Analyzing trace with hash -1379859160, now seen corresponding path program 1 times [2020-09-25 13:21:25,324 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:25,324 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [252401929] [2020-09-25 13:21:25,325 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:25,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 13:21:25,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-09-25 13:21:25,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,607 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:25,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:25,608 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 13:21:25,608 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-25 13:21:25,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:25,704 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:25,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:25,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:25,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:25,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:25,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:25,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:25,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:25,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:25,765 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:25,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:25,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-09-25 13:21:25,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:25,766 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:25,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:25,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:25,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:21:25,857 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [252401929] [2020-09-25 13:21:25,859 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:25,860 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:21:25,861 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [257550740] [2020-09-25 13:21:25,867 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:25,867 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:25,886 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:25,889 INFO L87 Difference]: Start difference. First operand 35 states. Second operand 7 states. [2020-09-25 13:21:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:26,091 INFO L93 Difference]: Finished difference Result 50 states and 57 transitions. [2020-09-25 13:21:26,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:21:26,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 13:21:26,094 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:26,108 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:21:26,108 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 13:21:26,113 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:21:26,135 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 13:21:26,166 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 13:21:26,168 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 13:21:26,170 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 13:21:26,172 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 19 [2020-09-25 13:21:26,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:26,172 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 13:21:26,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:26,173 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 13:21:26,175 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2020-09-25 13:21:26,175 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:26,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:26,176 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 13:21:26,176 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:26,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:26,177 INFO L82 PathProgramCache]: Analyzing trace with hash -2056866127, now seen corresponding path program 1 times [2020-09-25 13:21:26,177 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:26,177 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1321438145] [2020-09-25 13:21:26,178 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:26,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-09-25 13:21:26,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 13:21:26,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:26,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 13:21:26,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:26,365 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:26,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,369 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,369 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:26,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,370 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:26,370 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,370 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:26,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:26,372 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:26,373 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:26,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:26,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:26,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:26,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 13:21:26,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:26,397 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:21:26,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:26,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:26,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:26,443 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 13:21:26,443 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1321438145] [2020-09-25 13:21:26,444 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 13:21:26,444 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 13:21:26,444 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [639164382] [2020-09-25 13:21:26,446 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 13:21:26,447 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:26,447 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 13:21:26,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 13:21:26,448 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 7 states. [2020-09-25 13:21:26,584 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:26,585 INFO L93 Difference]: Finished difference Result 39 states and 44 transitions. [2020-09-25 13:21:26,585 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:21:26,586 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 20 [2020-09-25 13:21:26,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:26,587 INFO L225 Difference]: With dead ends: 39 [2020-09-25 13:21:26,587 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 13:21:26,590 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 13:21:26,590 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 13:21:26,602 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 31. [2020-09-25 13:21:26,602 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 13:21:26,605 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 35 transitions. [2020-09-25 13:21:26,605 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 35 transitions. Word has length 20 [2020-09-25 13:21:26,606 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:26,606 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 35 transitions. [2020-09-25 13:21:26,606 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 13:21:26,606 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 35 transitions. [2020-09-25 13:21:26,609 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 13:21:26,609 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:26,609 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, 1, 1, 1] [2020-09-25 13:21:26,610 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 13:21:26,610 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:26,610 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:26,610 INFO L82 PathProgramCache]: Analyzing trace with hash -1274124978, now seen corresponding path program 1 times [2020-09-25 13:21:26,611 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:26,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [217428131] [2020-09-25 13:21:26,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:26,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:26,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:26,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 13:21:27,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:27,124 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-09-25 13:21:27,125 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,125 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,125 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:21:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:27,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 13:21:27,126 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 13:21:27,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:27,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:27,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:27,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:27,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:27,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:27,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:27,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,317 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,318 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:27,318 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:27,318 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-09-25 13:21:27,318 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,319 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:27,368 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:27,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:27,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:27,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:27,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:27,430 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:27,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:27,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:27,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 13:21:27,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:27,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:27,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:27,452 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:27,473 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 1 proven. 9 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:27,474 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [217428131] [2020-09-25 13:21:27,474 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:27,474 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:21:27,474 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [589736922] [2020-09-25 13:21:27,475 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:21:27,475 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:27,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:21:27,476 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:21:27,476 INFO L87 Difference]: Start difference. First operand 31 states and 35 transitions. Second operand 12 states. [2020-09-25 13:21:27,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:27,766 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-09-25 13:21:27,767 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:21:27,767 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 36 [2020-09-25 13:21:27,768 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:27,769 INFO L225 Difference]: With dead ends: 50 [2020-09-25 13:21:27,770 INFO L226 Difference]: Without dead ends: 44 [2020-09-25 13:21:27,771 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=75, Invalid=305, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:21:27,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-25 13:21:27,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 41. [2020-09-25 13:21:27,779 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 13:21:27,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 51 transitions. [2020-09-25 13:21:27,782 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 51 transitions. Word has length 36 [2020-09-25 13:21:27,782 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:27,782 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 51 transitions. [2020-09-25 13:21:27,782 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:21:27,783 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 51 transitions. [2020-09-25 13:21:27,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-25 13:21:27,785 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:27,785 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:27,785 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 13:21:27,793 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:27,793 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:27,793 INFO L82 PathProgramCache]: Analyzing trace with hash -2043121517, now seen corresponding path program 1 times [2020-09-25 13:21:27,794 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:27,794 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [788651276] [2020-09-25 13:21:27,794 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:27,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:27,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:27,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-09-25 13:21:28,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:28,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 844 [2020-09-25 13:21:28,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,655 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 13:21:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:28,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 13:21:28,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,681 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:28,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:28,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,685 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:28,685 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,685 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,686 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:28,686 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:28,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:28,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:28,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 13:21:28,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 13:21:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:28,788 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:28,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:28,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:28,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:28,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,861 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:28,861 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:28,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:28,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:28,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:28,929 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:28,930 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:28,930 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:21:28,930 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:28,930 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:28,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:28,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:28,950 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-25 13:21:28,950 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [788651276] [2020-09-25 13:21:28,951 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:28,951 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 13:21:28,951 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402934743] [2020-09-25 13:21:28,952 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 13:21:28,952 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:28,952 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 13:21:28,953 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:21:28,953 INFO L87 Difference]: Start difference. First operand 41 states and 51 transitions. Second operand 12 states. [2020-09-25 13:21:29,235 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:29,236 INFO L93 Difference]: Finished difference Result 58 states and 75 transitions. [2020-09-25 13:21:29,236 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-09-25 13:21:29,236 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 37 [2020-09-25 13:21:29,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:29,239 INFO L225 Difference]: With dead ends: 58 [2020-09-25 13:21:29,239 INFO L226 Difference]: Without dead ends: 52 [2020-09-25 13:21:29,240 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2020-09-25 13:21:29,240 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-09-25 13:21:29,249 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 39. [2020-09-25 13:21:29,249 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-09-25 13:21:29,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-09-25 13:21:29,250 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 37 [2020-09-25 13:21:29,251 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:29,251 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-09-25 13:21:29,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 13:21:29,251 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-09-25 13:21:29,253 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:21:29,253 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:29,254 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:29,254 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 13:21:29,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:29,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:29,255 INFO L82 PathProgramCache]: Analyzing trace with hash -845339958, now seen corresponding path program 2 times [2020-09-25 13:21:29,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:29,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1684296270] [2020-09-25 13:21:29,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:29,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:29,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:21:33,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:21:33,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3851 [2020-09-25 13:21:33,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,119 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:21:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,141 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:33,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:33,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:33,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:33,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:33,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:33,145 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:33,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:33,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:33,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:33,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:33,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:21:35,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2709 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,863 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 13:21:35,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:35,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:35,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:35,931 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:35,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:35,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:35,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 13:21:35,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:35,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:35,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:35,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:35,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:35,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:35,969 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:35,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,195 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:36,195 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:36,195 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 224 [2020-09-25 13:21:36,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,196 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:36,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:36,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 13:21:36,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:36,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,271 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:36,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:36,272 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:36,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:21:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:36,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 13:21:36,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:36,291 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,308 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:36,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:36,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:36,309 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 13:21:36,309 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:36,309 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:36,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:36,310 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:36,310 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:36,323 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 31 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-25 13:21:36,324 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1684296270] [2020-09-25 13:21:36,324 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:36,325 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:21:36,325 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [34536255] [2020-09-25 13:21:36,326 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:21:36,326 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:36,326 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:21:36,326 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:21:36,327 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 14 states. [2020-09-25 13:21:36,720 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:36,721 INFO L93 Difference]: Finished difference Result 92 states and 134 transitions. [2020-09-25 13:21:36,721 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 13:21:36,721 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-09-25 13:21:36,722 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:36,724 INFO L225 Difference]: With dead ends: 92 [2020-09-25 13:21:36,724 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 13:21:36,726 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2020-09-25 13:21:36,726 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 13:21:36,740 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 45. [2020-09-25 13:21:36,741 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 13:21:36,744 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 56 transitions. [2020-09-25 13:21:36,749 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 56 transitions. Word has length 53 [2020-09-25 13:21:36,749 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:36,749 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 56 transitions. [2020-09-25 13:21:36,749 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:21:36,749 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 56 transitions. [2020-09-25 13:21:36,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:21:36,757 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:36,757 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:36,758 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 13:21:36,758 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:36,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:36,759 INFO L82 PathProgramCache]: Analyzing trace with hash -1985616609, now seen corresponding path program 1 times [2020-09-25 13:21:36,762 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:36,762 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [309005026] [2020-09-25 13:21:36,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:36,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:36,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:36,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:37,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:38,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:39,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,782 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:41,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:21:41,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-25 13:21:41,783 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-25 13:21:41,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:41,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:21:41,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:41,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 13:21:41,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:41,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:41,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:41,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,811 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:41,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:41,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:41,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 13:21:41,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:41,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:41,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:41,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:41,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:41,815 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:41,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:41,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:41,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:42,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:43,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:21:46,213 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:21:46,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4390 [2020-09-25 13:21:46,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,214 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:21:46,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 13:21:46,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,282 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:46,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:46,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:21:46,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:46,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:46,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:46,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:21:46,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:46,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 440 [2020-09-25 13:21:46,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,775 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:46,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,776 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-25 13:21:46,776 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:46,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:46,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:46,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:46,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,843 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:21:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:46,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:46,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:46,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:46,879 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:46,879 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:46,879 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:46,879 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:46,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:46,880 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:46,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:46,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:21:46,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:46,904 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 0 proven. 41 refuted. 0 times theorem prover too weak. 19 trivial. 0 not checked. [2020-09-25 13:21:46,904 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [309005026] [2020-09-25 13:21:46,905 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:46,905 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:21:46,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [915380290] [2020-09-25 13:21:46,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:21:46,906 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:21:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=177, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:21:46,907 INFO L87 Difference]: Start difference. First operand 45 states and 56 transitions. Second operand 15 states. [2020-09-25 13:21:48,021 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:48,021 INFO L93 Difference]: Finished difference Result 133 states and 184 transitions. [2020-09-25 13:21:48,022 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-09-25 13:21:48,022 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 13:21:48,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:48,026 INFO L225 Difference]: With dead ends: 133 [2020-09-25 13:21:48,026 INFO L226 Difference]: Without dead ends: 127 [2020-09-25 13:21:48,028 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 13 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 251 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=285, Invalid=1121, Unknown=0, NotChecked=0, Total=1406 [2020-09-25 13:21:48,028 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-25 13:21:48,048 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 67. [2020-09-25 13:21:48,049 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-09-25 13:21:48,050 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 91 transitions. [2020-09-25 13:21:48,050 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 91 transitions. Word has length 56 [2020-09-25 13:21:48,051 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:48,051 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 91 transitions. [2020-09-25 13:21:48,051 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:21:48,051 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 91 transitions. [2020-09-25 13:21:48,053 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-25 13:21:48,053 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:48,054 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:48,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 13:21:48,054 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:48,054 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:48,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1288436502, now seen corresponding path program 3 times [2020-09-25 13:21:48,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:48,055 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1135392406] [2020-09-25 13:21:48,055 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:48,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:48,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:48,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,985 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,985 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-25 13:21:49,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 13:21:49,986 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1924 [2020-09-25 13:21:49,986 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,986 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:21:49,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:21:49,987 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:49,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:49,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:49,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:49,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:49,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:49,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:49,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:49,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:49,996 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:49,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:49,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:49,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:49,998 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 691 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:50,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:21:50,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 13:21:50,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:50,703 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:50,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-25 13:21:50,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:21:50,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:50,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:50,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:50,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,843 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,843 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:50,843 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-25 13:21:50,843 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,844 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,844 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:50,844 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-25 13:21:50,847 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:21:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:50,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:50,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:50,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-25 13:21:50,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:50,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:50,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:50,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:50,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:50,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 13:21:50,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:50,864 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:21:50,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:50,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:50,888 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 29 proven. 6 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 13:21:50,888 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1135392406] [2020-09-25 13:21:50,888 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:50,888 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:21:50,889 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [324623436] [2020-09-25 13:21:50,889 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:21:50,889 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:50,890 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:21:50,890 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:21:50,890 INFO L87 Difference]: Start difference. First operand 67 states and 91 transitions. Second operand 8 states. [2020-09-25 13:21:51,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:51,037 INFO L93 Difference]: Finished difference Result 133 states and 197 transitions. [2020-09-25 13:21:51,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-25 13:21:51,045 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-09-25 13:21:51,045 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:51,047 INFO L225 Difference]: With dead ends: 133 [2020-09-25 13:21:51,047 INFO L226 Difference]: Without dead ends: 75 [2020-09-25 13:21:51,050 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:21:51,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 75 states. [2020-09-25 13:21:51,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 75 to 63. [2020-09-25 13:21:51,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 13:21:51,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 84 transitions. [2020-09-25 13:21:51,070 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 84 transitions. Word has length 53 [2020-09-25 13:21:51,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:51,072 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 84 transitions. [2020-09-25 13:21:51,072 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:21:51,072 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 84 transitions. [2020-09-25 13:21:51,074 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:21:51,074 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:51,074 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, 1, 1, 1] [2020-09-25 13:21:51,075 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 13:21:51,075 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:51,075 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:51,075 INFO L82 PathProgramCache]: Analyzing trace with hash -1275966376, now seen corresponding path program 2 times [2020-09-25 13:21:51,075 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:51,076 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1716737371] [2020-09-25 13:21:51,076 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:51,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:51,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:51,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:55,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:21:55,567 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:55,567 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4481 [2020-09-25 13:21:55,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:55,567 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:55,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:21:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:21:55,568 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:21:55,568 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:55,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:21:55,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:55,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:55,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:21:55,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:55,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:21:55,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:55,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:21:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:21:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:55,589 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:21:55,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:55,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:55,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,856 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,857 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:21:58,857 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 13:21:58,857 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3262 [2020-09-25 13:21:58,857 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:21:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:21:58,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:58,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:58,914 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:58,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:58,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:58,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:21:58,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:58,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 13:21:58,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:58,974 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:58,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:21:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:58,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:21:58,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:21:59,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,040 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:59,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:21:59,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,041 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:21:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:59,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:21:59,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:21:59,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:21:59,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:21:59,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-25 13:21:59,091 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:21:59,100 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:21:59,100 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:21:59,100 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:21:59,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:21:59,101 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:21:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:21:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:21:59,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:21:59,102 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:21:59,163 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 12 proven. 26 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 13:21:59,163 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1716737371] [2020-09-25 13:21:59,164 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:21:59,164 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 13:21:59,164 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [56029968] [2020-09-25 13:21:59,165 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 13:21:59,165 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:21:59,166 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 13:21:59,166 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=175, Unknown=0, NotChecked=0, Total=210 [2020-09-25 13:21:59,166 INFO L87 Difference]: Start difference. First operand 63 states and 84 transitions. Second operand 15 states. [2020-09-25 13:21:59,560 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:21:59,560 INFO L93 Difference]: Finished difference Result 115 states and 163 transitions. [2020-09-25 13:21:59,561 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-09-25 13:21:59,562 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 55 [2020-09-25 13:21:59,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:21:59,564 INFO L225 Difference]: With dead ends: 115 [2020-09-25 13:21:59,566 INFO L226 Difference]: Without dead ends: 109 [2020-09-25 13:21:59,567 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=108, Invalid=492, Unknown=0, NotChecked=0, Total=600 [2020-09-25 13:21:59,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2020-09-25 13:21:59,586 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 71. [2020-09-25 13:21:59,586 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 13:21:59,587 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 97 transitions. [2020-09-25 13:21:59,590 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 97 transitions. Word has length 55 [2020-09-25 13:21:59,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:21:59,591 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 97 transitions. [2020-09-25 13:21:59,591 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 13:21:59,591 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 97 transitions. [2020-09-25 13:21:59,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 13:21:59,592 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:21:59,593 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:21:59,594 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 13:21:59,595 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:21:59,595 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:21:59,595 INFO L82 PathProgramCache]: Analyzing trace with hash -903062689, now seen corresponding path program 2 times [2020-09-25 13:21:59,596 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:21:59,596 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [269058557] [2020-09-25 13:21:59,596 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:21:59,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:21:59,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,627 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:21:59,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:00,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:02,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 13:22:03,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3575 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:22:03,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:03,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:03,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:03,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,192 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:03,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,293 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 481 [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-25 13:22:03,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 13:22:03,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-25 13:22:03,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:03,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 13:22:03,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:03,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 13:22:03,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:03,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,867 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:03,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 13:22:03,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-25 13:22:03,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,906 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 13:22:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:03,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:03,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:03,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-25 13:22:03,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:03,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:03,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-25 13:22:03,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 13:22:03,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:03,954 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 39 proven. 8 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-09-25 13:22:03,955 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [269058557] [2020-09-25 13:22:03,955 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:03,955 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-25 13:22:03,955 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [44919769] [2020-09-25 13:22:03,956 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-25 13:22:03,956 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:03,956 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-25 13:22:03,956 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2020-09-25 13:22:03,956 INFO L87 Difference]: Start difference. First operand 71 states and 97 transitions. Second operand 8 states. [2020-09-25 13:22:04,114 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:04,115 INFO L93 Difference]: Finished difference Result 163 states and 253 transitions. [2020-09-25 13:22:04,118 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 13:22:04,118 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 56 [2020-09-25 13:22:04,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:04,120 INFO L225 Difference]: With dead ends: 163 [2020-09-25 13:22:04,121 INFO L226 Difference]: Without dead ends: 101 [2020-09-25 13:22:04,122 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=44, Invalid=88, Unknown=0, NotChecked=0, Total=132 [2020-09-25 13:22:04,122 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2020-09-25 13:22:04,149 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 81. [2020-09-25 13:22:04,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 13:22:04,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 109 transitions. [2020-09-25 13:22:04,151 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 109 transitions. Word has length 56 [2020-09-25 13:22:04,151 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:04,152 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 109 transitions. [2020-09-25 13:22:04,152 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-25 13:22:04,152 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 109 transitions. [2020-09-25 13:22:04,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-09-25 13:22:04,157 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:04,157 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, 1, 1, 1] [2020-09-25 13:22:04,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 13:22:04,157 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:04,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:04,157 INFO L82 PathProgramCache]: Analyzing trace with hash 2003700030, now seen corresponding path program 3 times [2020-09-25 13:22:04,157 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:04,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [371309326] [2020-09-25 13:22:04,158 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:04,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:04,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:04,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:05,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-09-25 13:22:05,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:05,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1056 [2020-09-25 13:22:05,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:05,223 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 13:22:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 13:22:05,223 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-09-25 13:22:05,223 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:05,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:05,238 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:05,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:05,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:05,241 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:05,241 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:05,242 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:05,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:05,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:05,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:05,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,268 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,268 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 13:22:06,269 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 13:22:06,269 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1019 [2020-09-25 13:22:06,269 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,269 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 13:22:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,270 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 13:22:06,270 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:06,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:06,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:06,325 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,325 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 13:22:06,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,326 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 13:22:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 13:22:06,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:06,349 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:06,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-25 13:22:06,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,419 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 13:22:06,419 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,420 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 13:22:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-25 13:22:06,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:06,499 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 13:22:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-25 13:22:06,513 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 13:22:06,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 13:22:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:06,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 13:22:06,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-25 13:22:06,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:06,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:06,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:06,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 13:22:06,534 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:06,562 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 0 proven. 36 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-09-25 13:22:06,562 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [371309326] [2020-09-25 13:22:06,562 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 13:22:06,562 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 13:22:06,562 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1289477418] [2020-09-25 13:22:06,563 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 13:22:06,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 13:22:06,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 13:22:06,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=152, Unknown=0, NotChecked=0, Total=182 [2020-09-25 13:22:06,564 INFO L87 Difference]: Start difference. First operand 81 states and 109 transitions. Second operand 14 states. [2020-09-25 13:22:07,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 13:22:07,037 INFO L93 Difference]: Finished difference Result 191 states and 277 transitions. [2020-09-25 13:22:07,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-09-25 13:22:07,037 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 55 [2020-09-25 13:22:07,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 13:22:07,041 INFO L225 Difference]: With dead ends: 191 [2020-09-25 13:22:07,041 INFO L226 Difference]: Without dead ends: 115 [2020-09-25 13:22:07,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=135, Invalid=677, Unknown=0, NotChecked=0, Total=812 [2020-09-25 13:22:07,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-25 13:22:07,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 83. [2020-09-25 13:22:07,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 83 states. [2020-09-25 13:22:07,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 111 transitions. [2020-09-25 13:22:07,073 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 111 transitions. Word has length 55 [2020-09-25 13:22:07,073 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 13:22:07,074 INFO L479 AbstractCegarLoop]: Abstraction has 83 states and 111 transitions. [2020-09-25 13:22:07,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 13:22:07,074 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 111 transitions. [2020-09-25 13:22:07,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 91 [2020-09-25 13:22:07,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 13:22:07,079 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 13:22:07,079 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 13:22:07,079 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 13:22:07,080 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 13:22:07,080 INFO L82 PathProgramCache]: Analyzing trace with hash -778718797, now seen corresponding path program 4 times [2020-09-25 13:22:07,080 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 13:22:07,080 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [34153915] [2020-09-25 13:22:07,080 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 13:22:07,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:07,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:07,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:09,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 13:22:12,104 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 13:22:12,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5005 [2020-09-25 13:22:12,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,105 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 13:22:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 13:22:12,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-25 13:22:12,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:12,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 13:22:12,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 13:22:12,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 13:22:12,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 13:22:12,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 13:22:12,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 13:22:12,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.4 [2020-09-25 13:22:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 13:22:12,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 13:22:12,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 13:22:12,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 13:22:12,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 13:22:12,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 13:22:12,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:12,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 13:22:13,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking...