/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=HIGHLEXORDER --traceabstraction.additional.smt.options log-additional-information=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:47,813 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:47,818 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:47,862 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:47,863 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:47,870 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:47,872 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:47,876 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:47,879 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:47,882 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:47,883 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:47,884 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:47,884 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:47,887 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:47,890 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:47,891 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:47,893 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:47,894 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:47,896 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:47,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:47,906 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:47,908 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:47,909 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:47,910 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:47,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:47,922 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:47,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:47,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:47,932 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:47,933 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:47,934 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:47,934 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:47,937 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:47,938 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:47,939 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:47,939 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:47,940 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:47,940 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:47,941 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:47,942 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:47,943 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:47,944 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-24 22:38:47,991 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:47,991 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:47,994 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:47,994 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:47,994 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:47,994 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:47,995 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:47,995 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:47,995 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:47,995 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:47,996 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:47,996 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:47,997 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:47,997 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:47,997 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:47,997 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:47,998 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:47,998 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:47,998 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:47,998 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:47,999 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:47,999 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:47,999 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:47,999 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:47,999 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:48,000 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:48,000 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:48,000 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:48,000 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:48,000 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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;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=HIGHLEXORDER;log-additional-information=true; [2020-09-24 22:38:48,455 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:48,481 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:48,488 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:48,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:48,491 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:48,492 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 22:38:48,581 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4b16a98/731bfcb845bf434f9d6088fac12d60b8/FLAGafa172465 [2020-09-24 22:38:49,107 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:49,108 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_20-2.c [2020-09-24 22:38:49,116 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4b16a98/731bfcb845bf434f9d6088fac12d60b8/FLAGafa172465 [2020-09-24 22:38:49,452 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/ea4b16a98/731bfcb845bf434f9d6088fac12d60b8 [2020-09-24 22:38:49,465 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:49,472 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:49,473 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:49,474 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:49,478 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:49,479 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,484 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f88baa and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49, skipping insertion in model container [2020-09-24 22:38:49,484 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,493 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:49,520 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:49,754 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:49,761 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:49,785 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:49,804 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:49,806 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49 WrapperNode [2020-09-24 22:38:49,807 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:49,807 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:49,808 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:49,808 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:49,826 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,828 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,835 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,835 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,841 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,844 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,846 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... [2020-09-24 22:38:49,847 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:49,848 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:49,848 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:49,848 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:49,849 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:50,040 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:50,041 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo [2020-09-24 22:38:50,042 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:50,042 INFO L130 BoogieDeclarations]: Found specification of procedure fibo [2020-09-24 22:38:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:50,043 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:50,243 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:50,244 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:50,248 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:50 BoogieIcfgContainer [2020-09-24 22:38:50,248 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:50,250 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:50,250 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:50,253 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:50,254 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:49" (1/3) ... [2020-09-24 22:38:50,255 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:50, skipping insertion in model container [2020-09-24 22:38:50,255 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:49" (2/3) ... [2020-09-24 22:38:50,256 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2b4f37bc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:50, skipping insertion in model container [2020-09-24 22:38:50,256 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:50" (3/3) ... [2020-09-24 22:38:50,258 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_20-2.c [2020-09-24 22:38:50,270 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:50,279 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:50,303 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:50,334 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:50,334 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:50,334 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:50,334 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:50,335 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:50,335 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:50,335 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:50,335 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:50,358 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-09-24 22:38:50,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:50,366 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:50,367 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:50,367 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:50,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:50,374 INFO L82 PathProgramCache]: Analyzing trace with hash -1756383024, now seen corresponding path program 1 times [2020-09-24 22:38:50,383 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:50,383 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1787378329] [2020-09-24 22:38:50,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:50,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:50,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:50,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:50,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:50,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:50,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-24 22:38:50,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:50,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:50,557 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:50,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:50,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:50,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:50,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:50,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:50,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:50,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:50,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:50,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:50,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:50,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:50,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:50,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:50,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:50,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:50,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:50,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-24 22:38:50,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:50,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:50,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:50,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:50,801 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:50,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1787378329] [2020-09-24 22:38:50,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:50,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:50,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [271617329] [2020-09-24 22:38:50,813 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:50,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:50,829 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:50,830 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:50,832 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 5 states. [2020-09-24 22:38:50,955 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:50,956 INFO L93 Difference]: Finished difference Result 44 states and 50 transitions. [2020-09-24 22:38:50,956 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:50,958 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:50,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:50,970 INFO L225 Difference]: With dead ends: 44 [2020-09-24 22:38:50,970 INFO L226 Difference]: Without dead ends: 28 [2020-09-24 22:38:50,975 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:50,994 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-24 22:38:51,024 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-24 22:38:51,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:51,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:51,029 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 16 [2020-09-24 22:38:51,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:51,030 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:51,030 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:51,030 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:51,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:51,032 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:51,033 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:51,033 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:51,033 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:51,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:51,034 INFO L82 PathProgramCache]: Analyzing trace with hash -389703589, now seen corresponding path program 1 times [2020-09-24 22:38:51,034 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:51,035 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1140226502] [2020-09-24 22:38:51,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:51,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,153 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:51,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,154 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-24 22:38:51,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:51,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:51,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:51,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,195 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:51,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:51,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:51,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:51,198 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:51,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:51,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:51,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:51,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-24 22:38:51,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:51,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:51,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:51,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:51,278 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-24 22:38:51,278 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1140226502] [2020-09-24 22:38:51,279 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:51,279 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:51,279 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1489057866] [2020-09-24 22:38:51,281 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:51,282 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:51,282 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:51,282 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:51,283 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 5 states. [2020-09-24 22:38:51,350 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:51,350 INFO L93 Difference]: Finished difference Result 36 states and 41 transitions. [2020-09-24 22:38:51,351 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:51,351 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:51,351 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:51,352 INFO L225 Difference]: With dead ends: 36 [2020-09-24 22:38:51,353 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:51,354 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:51,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:51,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 28. [2020-09-24 22:38:51,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-24 22:38:51,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 32 transitions. [2020-09-24 22:38:51,362 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 32 transitions. Word has length 17 [2020-09-24 22:38:51,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:51,363 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 32 transitions. [2020-09-24 22:38:51,363 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:51,363 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 32 transitions. [2020-09-24 22:38:51,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:51,365 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:51,365 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:51,365 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:51,365 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:51,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:51,366 INFO L82 PathProgramCache]: Analyzing trace with hash 50309368, now seen corresponding path program 1 times [2020-09-24 22:38:51,366 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:51,366 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2105747770] [2020-09-24 22:38:51,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:51,378 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:51,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:51,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,006 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,007 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:38:52,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-09-24 22:38:52,010 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-24 22:38:52,011 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,011 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:52,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,031 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:52,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:38:52,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,034 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:52,053 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:38:52,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-09-24 22:38:52,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:52,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:38:52,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:52,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:38:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:52,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:52,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:38:52,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:52,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,207 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:52,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:38:52,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,218 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-24 22:38:52,219 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2105747770] [2020-09-24 22:38:52,219 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:52,220 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-09-24 22:38:52,220 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [161316821] [2020-09-24 22:38:52,221 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-24 22:38:52,222 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:52,225 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-24 22:38:52,227 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:52,227 INFO L87 Difference]: Start difference. First operand 28 states and 32 transitions. Second operand 6 states. [2020-09-24 22:38:52,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:52,324 INFO L93 Difference]: Finished difference Result 52 states and 63 transitions. [2020-09-24 22:38:52,324 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:52,325 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-24 22:38:52,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:52,326 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:38:52,326 INFO L226 Difference]: Without dead ends: 30 [2020-09-24 22:38:52,327 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=24, Invalid=48, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:52,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-09-24 22:38:52,334 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-09-24 22:38:52,334 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-09-24 22:38:52,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 34 transitions. [2020-09-24 22:38:52,336 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 34 transitions. Word has length 33 [2020-09-24 22:38:52,336 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:52,336 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 34 transitions. [2020-09-24 22:38:52,336 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-24 22:38:52,336 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 34 transitions. [2020-09-24 22:38:52,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:38:52,338 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:52,338 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:52,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:38:52,339 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:52,339 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:52,339 INFO L82 PathProgramCache]: Analyzing trace with hash -643371531, now seen corresponding path program 1 times [2020-09-24 22:38:52,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:52,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1089872852] [2020-09-24 22:38:52,340 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:52,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,717 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:38:52,718 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:52,718 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 368 [2020-09-24 22:38:52,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:38:52,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:38:52,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:52,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:52,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:52,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:52,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:52,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:52,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:52,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:52,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:52,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:52,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:52,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:52,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:53,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:53,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 302 [2020-09-24 22:38:53,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:53,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:53,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:53,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:53,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:38:53,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:53,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:53,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,105 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,105 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:53,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:53,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:53,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,131 INFO L134 CoverageAnalysis]: Checked inductivity of 13 backedges. 5 proven. 5 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-09-24 22:38:53,131 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1089872852] [2020-09-24 22:38:53,132 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:53,132 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:38:53,132 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1824946301] [2020-09-24 22:38:53,133 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:38:53,133 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:53,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:38:53,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:53,134 INFO L87 Difference]: Start difference. First operand 30 states and 34 transitions. Second operand 7 states. [2020-09-24 22:38:53,226 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:53,226 INFO L93 Difference]: Finished difference Result 42 states and 47 transitions. [2020-09-24 22:38:53,227 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:53,227 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 34 [2020-09-24 22:38:53,228 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:53,229 INFO L225 Difference]: With dead ends: 42 [2020-09-24 22:38:53,229 INFO L226 Difference]: Without dead ends: 36 [2020-09-24 22:38:53,231 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:53,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-24 22:38:53,243 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-09-24 22:38:53,244 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-09-24 22:38:53,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 38 transitions. [2020-09-24 22:38:53,249 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 38 transitions. Word has length 34 [2020-09-24 22:38:53,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:53,250 INFO L479 AbstractCegarLoop]: Abstraction has 34 states and 38 transitions. [2020-09-24 22:38:53,251 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:38:53,251 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 38 transitions. [2020-09-24 22:38:53,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:38:53,252 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:53,252 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:53,253 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:38:53,254 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:53,254 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:53,255 INFO L82 PathProgramCache]: Analyzing trace with hash 765810174, now seen corresponding path program 1 times [2020-09-24 22:38:53,255 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:53,255 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1635439392] [2020-09-24 22:38:53,255 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:53,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,775 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:38:53,775 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:38:53,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 507 [2020-09-24 22:38:53,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:53,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:53,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:53,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:53,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,795 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:53,795 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,795 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:53,795 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:53,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:53,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,948 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:38:53,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:53,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-24 22:38:53,949 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:53,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:53,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:38:53,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:53,963 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:53,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:53,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:53,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:53,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:53,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:53,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:38:53,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:53,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:53,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:54,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:54,005 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:54,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:54,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:54,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-09-24 22:38:54,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:54,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:54,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:38:54,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:54,053 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 8 proven. 0 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-09-24 22:38:54,053 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1635439392] [2020-09-24 22:38:54,053 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:54,054 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:54,054 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1094786935] [2020-09-24 22:38:54,055 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:54,055 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:54,055 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:54,055 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:54,056 INFO L87 Difference]: Start difference. First operand 34 states and 38 transitions. Second operand 5 states. [2020-09-24 22:38:54,147 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:54,148 INFO L93 Difference]: Finished difference Result 78 states and 102 transitions. [2020-09-24 22:38:54,149 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-24 22:38:54,149 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 35 [2020-09-24 22:38:54,149 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:54,152 INFO L225 Difference]: With dead ends: 78 [2020-09-24 22:38:54,152 INFO L226 Difference]: Without dead ends: 50 [2020-09-24 22:38:54,156 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:38:54,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-09-24 22:38:54,173 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 38. [2020-09-24 22:38:54,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-24 22:38:54,178 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 46 transitions. [2020-09-24 22:38:54,179 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 46 transitions. Word has length 35 [2020-09-24 22:38:54,179 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:54,179 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 46 transitions. [2020-09-24 22:38:54,179 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:54,180 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 46 transitions. [2020-09-24 22:38:54,182 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:54,182 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:54,182 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:54,185 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:38:54,185 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:54,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:54,186 INFO L82 PathProgramCache]: Analyzing trace with hash -154171110, now seen corresponding path program 2 times [2020-09-24 22:38:54,186 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:54,186 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2004643255] [2020-09-24 22:38:54,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:54,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:54,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:54,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:38:57,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:38:57,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3210 [2020-09-24 22:38:57,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:38:57,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:57,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:57,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,429 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:57,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:38:57,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,430 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:57,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:57,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,685 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:38:57,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:57,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-09-24 22:38:57,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:38:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:38:57,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-24 22:38:57,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:38:57,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:57,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:57,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:38:57,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:57,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:57,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:57,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,015 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:38:58,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:38:58,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 239 [2020-09-24 22:38:58,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:38:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:38:58,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:38:58,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:38:58,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:58,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-24 22:38:58,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:38:58,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:38:58,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,124 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:38:58,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,136 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,136 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:58,136 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:38:58,137 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:38:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:58,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:58,150 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 28 proven. 15 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-24 22:38:58,151 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2004643255] [2020-09-24 22:38:58,152 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:38:58,152 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:38:58,153 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1516952632] [2020-09-24 22:38:58,154 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:38:58,154 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:58,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:38:58,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:38:58,155 INFO L87 Difference]: Start difference. First operand 38 states and 46 transitions. Second operand 9 states. [2020-09-24 22:38:58,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:58,353 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-09-24 22:38:58,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:38:58,354 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 52 [2020-09-24 22:38:58,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:58,355 INFO L225 Difference]: With dead ends: 79 [2020-09-24 22:38:58,356 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:38:58,359 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:38:58,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:38:58,369 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:38:58,370 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:38:58,371 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:38:58,371 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:38:58,371 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:58,371 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:38:58,372 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:38:58,372 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:38:58,376 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:38:58,376 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:58,377 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:58,377 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:38:58,377 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:58,377 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:58,378 INFO L82 PathProgramCache]: Analyzing trace with hash 99184320, now seen corresponding path program 3 times [2020-09-24 22:38:58,378 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:58,379 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [915356077] [2020-09-24 22:38:58,379 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:58,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,209 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,209 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:00,209 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:00,210 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1820 [2020-09-24 22:39:00,210 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-09-24 22:39:00,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-09-24 22:39:00,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:00,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,232 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:00,232 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:00,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:00,233 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:00,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,235 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:00,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:02,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:02,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1830 [2020-09-24 22:39:02,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:02,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:02,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,118 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:02,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,167 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-24 22:39:02,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:02,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:02,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,172 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,173 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:02,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:02,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:02,182 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:02,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:02,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-24 22:39:02,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:02,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,248 INFO L134 CoverageAnalysis]: Checked inductivity of 54 backedges. 24 proven. 10 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-09-24 22:39:02,249 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [915356077] [2020-09-24 22:39:02,249 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:02,249 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-24 22:39:02,250 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [811491788] [2020-09-24 22:39:02,250 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-24 22:39:02,251 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:02,251 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-24 22:39:02,251 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-24 22:39:02,251 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 7 states. [2020-09-24 22:39:02,382 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:02,382 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2020-09-24 22:39:02,384 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:02,384 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 52 [2020-09-24 22:39:02,385 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:02,389 INFO L225 Difference]: With dead ends: 52 [2020-09-24 22:39:02,389 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:02,390 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:02,390 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 40. [2020-09-24 22:39:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-24 22:39:02,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-24 22:39:02,403 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 52 [2020-09-24 22:39:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:02,403 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-24 22:39:02,404 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-24 22:39:02,404 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-24 22:39:02,408 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:02,408 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:02,408 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:02,409 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:02,409 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:02,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:02,409 INFO L82 PathProgramCache]: Analyzing trace with hash 501566307, now seen corresponding path program 4 times [2020-09-24 22:39:02,410 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:02,412 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1505525184] [2020-09-24 22:39:02,412 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-09-24 22:39:07,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-09-24 22:39:07,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5019 [2020-09-24 22:39:07,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:07,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:07,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 72 [2020-09-24 22:39:07,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:07,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:07,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,471 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:07,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:07,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:07,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:07,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:07,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:07,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:07,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:07,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:07,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:07,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:07,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:11,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,493 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-24 22:39:12,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:12,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:39:12,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:12,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-24 22:39:12,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,513 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:12,516 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:12,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:12,709 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-09-24 22:39:12,709 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:12,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:12,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:12,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:12,738 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:12,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,739 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:12,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:12,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:12,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:12,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:12,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:12,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:12,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:12,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:12,750 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,779 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:12,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-24 22:39:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2654 [2020-09-24 22:39:15,440 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-09-24 22:39:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:15,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:15,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:15,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:15,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,509 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:15,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:15,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:15,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:15,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:15,519 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:15,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:15,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:15,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:15,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,526 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:15,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:15,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:15,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:15,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:15,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:15,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-24 22:39:15,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:15,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:15,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:15,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:15,604 INFO L134 CoverageAnalysis]: Checked inductivity of 211 backedges. 80 proven. 63 refuted. 0 times theorem prover too weak. 68 trivial. 0 not checked. [2020-09-24 22:39:15,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1505525184] [2020-09-24 22:39:15,604 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:15,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:15,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [723538577] [2020-09-24 22:39:15,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:15,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:15,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:15,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:15,608 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 10 states. [2020-09-24 22:39:15,861 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:15,862 INFO L93 Difference]: Finished difference Result 104 states and 150 transitions. [2020-09-24 22:39:15,862 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:15,862 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 87 [2020-09-24 22:39:15,863 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:15,866 INFO L225 Difference]: With dead ends: 104 [2020-09-24 22:39:15,869 INFO L226 Difference]: Without dead ends: 70 [2020-09-24 22:39:15,870 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=70, Invalid=170, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:15,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2020-09-24 22:39:15,893 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 60. [2020-09-24 22:39:15,897 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-09-24 22:39:15,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 81 transitions. [2020-09-24 22:39:15,898 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 81 transitions. Word has length 87 [2020-09-24 22:39:15,899 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:15,899 INFO L479 AbstractCegarLoop]: Abstraction has 60 states and 81 transitions. [2020-09-24 22:39:15,899 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:15,899 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 81 transitions. [2020-09-24 22:39:15,904 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-09-24 22:39:15,904 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:15,904 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 5, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:15,908 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:15,908 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:15,908 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:15,909 INFO L82 PathProgramCache]: Analyzing trace with hash -758395752, now seen corresponding path program 5 times [2020-09-24 22:39:15,909 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:15,909 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1205121083] [2020-09-24 22:39:15,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:15,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:15,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:15,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:17,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:19,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-09-24 22:39:20,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-09-24 22:39:20,921 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:20,921 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:20,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:20,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:20,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:20,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:20,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:20,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:20,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:20,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:20,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:20,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:20,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:20,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:20,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,947 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:25,948 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-09-24 22:39:25,948 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-09-24 22:39:25,948 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:25,948 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-24 22:39:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:25,949 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-24 22:39:25,949 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:25,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:25,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:25,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:25,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:26,178 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:26,178 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-24 22:39:26,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:26,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:26,180 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:26,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,207 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:26,207 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:26,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:26,208 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:26,208 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:26,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:26,209 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:26,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,219 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:26,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:26,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:26,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:26,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:26,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:26,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:26,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,246 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:26,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:26,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-24 22:39:26,410 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,410 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:26,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:26,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:26,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,478 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:26,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:26,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,506 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:26,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:26,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:26,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:26,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:26,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:26,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:26,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:26,522 INFO L134 CoverageAnalysis]: Checked inductivity of 117 backedges. 51 proven. 38 refuted. 0 times theorem prover too weak. 28 trivial. 0 not checked. [2020-09-24 22:39:26,522 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1205121083] [2020-09-24 22:39:26,523 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:26,523 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-24 22:39:26,523 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345988245] [2020-09-24 22:39:26,524 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-24 22:39:26,524 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:26,524 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-24 22:39:26,524 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-09-24 22:39:26,525 INFO L87 Difference]: Start difference. First operand 60 states and 81 transitions. Second operand 10 states. [2020-09-24 22:39:26,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:26,828 INFO L93 Difference]: Finished difference Result 120 states and 168 transitions. [2020-09-24 22:39:26,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-24 22:39:26,830 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 69 [2020-09-24 22:39:26,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:26,832 INFO L225 Difference]: With dead ends: 120 [2020-09-24 22:39:26,834 INFO L226 Difference]: Without dead ends: 59 [2020-09-24 22:39:26,835 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 33 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2020-09-24 22:39:26,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-09-24 22:39:26,847 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 53. [2020-09-24 22:39:26,847 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-24 22:39:26,848 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 62 transitions. [2020-09-24 22:39:26,848 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 62 transitions. Word has length 69 [2020-09-24 22:39:26,848 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:26,849 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 62 transitions. [2020-09-24 22:39:26,851 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-24 22:39:26,851 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-09-24 22:39:26,852 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-09-24 22:39:26,852 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:26,853 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 11, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:26,853 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:26,853 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:26,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:26,853 INFO L82 PathProgramCache]: Analyzing trace with hash 1883941443, now seen corresponding path program 6 times [2020-09-24 22:39:26,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:26,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2086587367] [2020-09-24 22:39:26,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:26,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:26,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:26,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,930 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 156 [2020-09-24 22:39:31,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-09-24 22:39:31,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:39:31,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,873 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-24 22:39:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-09-24 22:39:31,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-24 22:39:31,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,887 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:31,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:31,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:31,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:31,890 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:31,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:31,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:31,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:33,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:34,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,912 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,913 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 142 [2020-09-24 22:39:36,913 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-09-24 22:39:36,913 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5008 [2020-09-24 22:39:36,913 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:36,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-09-24 22:39:36,914 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,184 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:38,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:38,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1249 [2020-09-24 22:39:38,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:38,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:38,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:38,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:38,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,229 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:38,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:38,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:39:38,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:38,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,242 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:38,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:38,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:38,243 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:38,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:38,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:38,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:38,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:38,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:38,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:38,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:38,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:38,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:38,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:38,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:38,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:38,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:38,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:38,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:38,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:38,306 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:38,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:40,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:43,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:43,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-24 22:39:43,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:43,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:43,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:43,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,453 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,539 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,539 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:44,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:44,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1199 [2020-09-24 22:39:44,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-24 22:39:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,567 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:44,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:44,583 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-09-24 22:39:44,584 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,587 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:44,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:44,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,592 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:44,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:44,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:44,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:44,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:44,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,601 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:44,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-24 22:39:44,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:44,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:44,624 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 46 [2020-09-24 22:39:44,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:44,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,653 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:44,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:44,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:44,703 INFO L134 CoverageAnalysis]: Checked inductivity of 483 backedges. 221 proven. 87 refuted. 0 times theorem prover too weak. 175 trivial. 0 not checked. [2020-09-24 22:39:44,703 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2086587367] [2020-09-24 22:39:44,704 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:44,704 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:39:44,704 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894822937] [2020-09-24 22:39:44,705 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:39:44,705 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:44,705 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:39:44,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=104, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:44,706 INFO L87 Difference]: Start difference. First operand 53 states and 62 transitions. Second operand 12 states. [2020-09-24 22:39:45,127 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:45,127 INFO L93 Difference]: Finished difference Result 127 states and 170 transitions. [2020-09-24 22:39:45,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-24 22:39:45,128 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 123 [2020-09-24 22:39:45,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:45,129 INFO L225 Difference]: With dead ends: 127 [2020-09-24 22:39:45,130 INFO L226 Difference]: Without dead ends: 80 [2020-09-24 22:39:45,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 71 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=143, Invalid=363, Unknown=0, NotChecked=0, Total=506 [2020-09-24 22:39:45,131 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-09-24 22:39:45,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 59. [2020-09-24 22:39:45,138 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-09-24 22:39:45,139 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 71 transitions. [2020-09-24 22:39:45,140 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 71 transitions. Word has length 123 [2020-09-24 22:39:45,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:45,140 INFO L479 AbstractCegarLoop]: Abstraction has 59 states and 71 transitions. [2020-09-24 22:39:45,140 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:39:45,141 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 71 transitions. [2020-09-24 22:39:45,141 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:45,142 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:45,142 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 7, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:45,142 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:45,142 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:45,142 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:45,143 INFO L82 PathProgramCache]: Analyzing trace with hash 866676589, now seen corresponding path program 7 times [2020-09-24 22:39:45,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:45,143 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1350276896] [2020-09-24 22:39:45,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:45,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:45,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:45,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking...