/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_2calls_10-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-24 22:38:54,802 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-24 22:38:54,806 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-24 22:38:54,833 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-24 22:38:54,833 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-24 22:38:54,835 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-24 22:38:54,836 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-24 22:38:54,838 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-24 22:38:54,840 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-24 22:38:54,841 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-24 22:38:54,842 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-24 22:38:54,844 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-24 22:38:54,844 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-24 22:38:54,845 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-24 22:38:54,847 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-24 22:38:54,848 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-24 22:38:54,849 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-24 22:38:54,850 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-24 22:38:54,852 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-24 22:38:54,854 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-24 22:38:54,856 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-24 22:38:54,857 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-24 22:38:54,859 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-24 22:38:54,860 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-24 22:38:54,867 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-24 22:38:54,867 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-24 22:38:54,867 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-24 22:38:54,868 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-24 22:38:54,871 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-24 22:38:54,872 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-24 22:38:54,873 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-24 22:38:54,874 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-24 22:38:54,875 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-24 22:38:54,877 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-24 22:38:54,879 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-24 22:38:54,879 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-24 22:38:54,880 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-24 22:38:54,880 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-24 22:38:54,881 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-24 22:38:54,890 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-24 22:38:54,891 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-24 22:38:54,892 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 22:38:54,943 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-24 22:38:54,943 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-24 22:38:54,946 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-24 22:38:54,946 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-24 22:38:54,946 INFO L138 SettingsManager]: * Use SBE=true [2020-09-24 22:38:54,946 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-24 22:38:54,947 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-24 22:38:54,947 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-24 22:38:54,947 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-24 22:38:54,947 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-24 22:38:54,948 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-24 22:38:54,949 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-24 22:38:54,949 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-24 22:38:54,949 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-24 22:38:54,950 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-24 22:38:54,950 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-24 22:38:54,950 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-24 22:38:54,950 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-24 22:38:54,951 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-24 22:38:54,951 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-24 22:38:54,951 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-24 22:38:54,951 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-24 22:38:54,951 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-24 22:38:54,952 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-24 22:38:54,952 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-24 22:38:54,952 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-24 22:38:54,952 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-24 22:38:54,952 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-24 22:38:54,953 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-24 22:38:54,953 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 22:38:55,447 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-24 22:38:55,466 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-24 22:38:55,471 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-24 22:38:55,473 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-24 22:38:55,474 INFO L275 PluginConnector]: CDTParser initialized [2020-09-24 22:38:55,475 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-24 22:38:55,563 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e91e02149/48bf5ac618fa4e98aab984f620373c0e/FLAGa9186be0b [2020-09-24 22:38:56,151 INFO L306 CDTParser]: Found 1 translation units. [2020-09-24 22:38:56,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/fibo_2calls_10-2.c [2020-09-24 22:38:56,161 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e91e02149/48bf5ac618fa4e98aab984f620373c0e/FLAGa9186be0b [2020-09-24 22:38:56,183 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e91e02149/48bf5ac618fa4e98aab984f620373c0e [2020-09-24 22:38:56,199 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-24 22:38:56,205 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-24 22:38:56,206 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:56,207 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-24 22:38:56,211 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-24 22:38:56,212 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,217 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7c3d6b50 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56, skipping insertion in model container [2020-09-24 22:38:56,217 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,227 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-24 22:38:56,252 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-24 22:38:56,466 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:56,472 INFO L203 MainTranslator]: Completed pre-run [2020-09-24 22:38:56,494 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-24 22:38:56,511 INFO L208 MainTranslator]: Completed translation [2020-09-24 22:38:56,511 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56 WrapperNode [2020-09-24 22:38:56,512 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-24 22:38:56,512 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-24 22:38:56,513 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-24 22:38:56,513 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-24 22:38:56,526 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,527 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,621 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,622 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,626 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,629 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,630 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (1/1) ... [2020-09-24 22:38:56,632 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-24 22:38:56,633 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-24 22:38:56,633 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-24 22:38:56,633 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-24 22:38:56,634 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (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 22:38:56,721 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-24 22:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-24 22:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo1 [2020-09-24 22:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure fibo2 [2020-09-24 22:38:56,722 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-24 22:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-24 22:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-24 22:38:56,722 INFO L130 BoogieDeclarations]: Found specification of procedure fibo1 [2020-09-24 22:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure fibo2 [2020-09-24 22:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-24 22:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-24 22:38:56,723 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-24 22:38:57,018 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-24 22:38:57,019 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-24 22:38:57,025 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:57 BoogieIcfgContainer [2020-09-24 22:38:57,025 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-24 22:38:57,035 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-24 22:38:57,035 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-24 22:38:57,050 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-24 22:38:57,050 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 24.09 10:38:56" (1/3) ... [2020-09-24 22:38:57,051 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c0431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:57, skipping insertion in model container [2020-09-24 22:38:57,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 24.09 10:38:56" (2/3) ... [2020-09-24 22:38:57,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24c0431c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 24.09 10:38:57, skipping insertion in model container [2020-09-24 22:38:57,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 24.09 10:38:57" (3/3) ... [2020-09-24 22:38:57,060 INFO L109 eAbstractionObserver]: Analyzing ICFG fibo_2calls_10-2.c [2020-09-24 22:38:57,078 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-24 22:38:57,089 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-24 22:38:57,110 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-24 22:38:57,144 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-24 22:38:57,144 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-24 22:38:57,144 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-24 22:38:57,144 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-24 22:38:57,145 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-24 22:38:57,145 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-24 22:38:57,145 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-24 22:38:57,145 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-24 22:38:57,168 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-24 22:38:57,176 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-24 22:38:57,177 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:57,178 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:57,178 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:57,185 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:57,185 INFO L82 PathProgramCache]: Analyzing trace with hash -1089710179, now seen corresponding path program 1 times [2020-09-24 22:38:57,197 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:57,197 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790445895] [2020-09-24 22:38:57,197 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:57,310 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-24 22:38:57,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:57,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-09-24 22:38:57,590 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:57,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-24 22:38:57,591 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:57,591 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-09-24 22:38:57,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:57,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,683 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:57,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:38:57,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:57,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,690 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:57,706 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:57,707 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:38:57,707 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:57,707 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:38:57,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:57,708 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:57,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-24 22:38:57,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:57,735 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 22:38:57,736 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790445895] [2020-09-24 22:38:57,740 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:57,740 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:57,742 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [332052755] [2020-09-24 22:38:57,750 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:57,750 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:57,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:57,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:57,773 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-24 22:38:57,870 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:57,871 INFO L93 Difference]: Finished difference Result 58 states and 67 transitions. [2020-09-24 22:38:57,871 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:57,873 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-24 22:38:57,874 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:57,888 INFO L225 Difference]: With dead ends: 58 [2020-09-24 22:38:57,889 INFO L226 Difference]: Without dead ends: 42 [2020-09-24 22:38:57,893 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-09-24 22:38:57,945 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2020-09-24 22:38:57,947 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:38:57,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:38:57,952 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 16 [2020-09-24 22:38:57,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:57,953 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:38:57,953 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:57,953 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:38:57,956 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-09-24 22:38:57,956 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:57,956 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 22:38:57,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-24 22:38:57,957 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:57,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:57,958 INFO L82 PathProgramCache]: Analyzing trace with hash -653728005, now seen corresponding path program 1 times [2020-09-24 22:38:57,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:57,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1264725298] [2020-09-24 22:38:57,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:57,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:57,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,116 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,117 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 26 [2020-09-24 22:38:58,117 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:38:58,117 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-09-24 22:38:58,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:38:58,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 18 [2020-09-24 22:38:58,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:58,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:38:58,151 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:38:58,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:38:58,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,156 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:38:58,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:38:58,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:38:58,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:38:58,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:38:58,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:38:58,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:38:58,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-24 22:38:58,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:38:58,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:38:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:38:58,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:38:58,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:38:58,212 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 22:38:58,213 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1264725298] [2020-09-24 22:38:58,213 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:38:58,213 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-24 22:38:58,213 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1764657249] [2020-09-24 22:38:58,215 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-24 22:38:58,216 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:38:58,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-24 22:38:58,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-24 22:38:58,216 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 5 states. [2020-09-24 22:38:58,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:38:58,270 INFO L93 Difference]: Finished difference Result 50 states and 58 transitions. [2020-09-24 22:38:58,271 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:38:58,271 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 17 [2020-09-24 22:38:58,272 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:38:58,274 INFO L225 Difference]: With dead ends: 50 [2020-09-24 22:38:58,274 INFO L226 Difference]: Without dead ends: 44 [2020-09-24 22:38:58,279 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-24 22:38:58,280 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-09-24 22:38:58,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 42. [2020-09-24 22:38:58,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-09-24 22:38:58,296 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 49 transitions. [2020-09-24 22:38:58,298 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 49 transitions. Word has length 17 [2020-09-24 22:38:58,298 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:38:58,299 INFO L479 AbstractCegarLoop]: Abstraction has 42 states and 49 transitions. [2020-09-24 22:38:58,299 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-24 22:38:58,299 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-09-24 22:38:58,302 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-24 22:38:58,302 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:38:58,302 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:38:58,303 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-24 22:38:58,303 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:38:58,303 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:38:58,303 INFO L82 PathProgramCache]: Analyzing trace with hash -1617834856, now seen corresponding path program 1 times [2020-09-24 22:38:58,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:38:58,304 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [684082489] [2020-09-24 22:38:58,304 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:38:58,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:38:58,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:38:58,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-09-24 22:39:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2049 [2020-09-24 22:39:00,384 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:00,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 23 [2020-09-24 22:39:00,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:00,385 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-24 22:39:00,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:00,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,429 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:00,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:00,430 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:00,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:00,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:00,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:00,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:00,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 343 [2020-09-24 22:39:00,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:00,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:00,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:00,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,862 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,862 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:00,863 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,863 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:00,863 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:00,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:00,864 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:00,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:00,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:00,906 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:00,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:00,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:00,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:00,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-24 22:39:00,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:00,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:00,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:00,921 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:00,924 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [684082489] [2020-09-24 22:39:00,925 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:00,925 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:00,926 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2093774142] [2020-09-24 22:39:00,927 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:00,927 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:00,928 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:00,928 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:00,928 INFO L87 Difference]: Start difference. First operand 42 states and 49 transitions. Second operand 8 states. [2020-09-24 22:39:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:01,066 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-09-24 22:39:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:01,067 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 33 [2020-09-24 22:39:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:01,068 INFO L225 Difference]: With dead ends: 82 [2020-09-24 22:39:01,068 INFO L226 Difference]: Without dead ends: 46 [2020-09-24 22:39:01,070 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:01,070 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-24 22:39:01,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2020-09-24 22:39:01,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-09-24 22:39:01,079 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2020-09-24 22:39:01,080 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 33 [2020-09-24 22:39:01,080 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:01,080 INFO L479 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2020-09-24 22:39:01,081 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:01,081 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2020-09-24 22:39:01,083 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-09-24 22:39:01,083 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:01,083 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:01,083 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-24 22:39:01,084 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:01,084 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:01,084 INFO L82 PathProgramCache]: Analyzing trace with hash 887160861, now seen corresponding path program 1 times [2020-09-24 22:39:01,085 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:01,085 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1559997220] [2020-09-24 22:39:01,085 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:01,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:01,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:01,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-24 22:39:02,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:02,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-24 22:39:02,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:02,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:02,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,248 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:02,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:02,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,249 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:02,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,252 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,340 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:02,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-24 22:39:02,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:02,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:02,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:02,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:02,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,400 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,401 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:02,401 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,401 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:02,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,402 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:02,402 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,420 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:02,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:02,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:02,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:02,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:02,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:02,468 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-24 22:39:02,468 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1559997220] [2020-09-24 22:39:02,469 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-24 22:39:02,469 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-24 22:39:02,469 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1977844263] [2020-09-24 22:39:02,471 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:02,472 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:02,472 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:02,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:02,474 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 9 states. [2020-09-24 22:39:02,597 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:02,597 INFO L93 Difference]: Finished difference Result 63 states and 75 transitions. [2020-09-24 22:39:02,598 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-24 22:39:02,599 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 34 [2020-09-24 22:39:02,599 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:02,601 INFO L225 Difference]: With dead ends: 63 [2020-09-24 22:39:02,601 INFO L226 Difference]: Without dead ends: 57 [2020-09-24 22:39:02,602 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:02,603 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-24 22:39:02,611 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 52. [2020-09-24 22:39:02,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:02,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 63 transitions. [2020-09-24 22:39:02,613 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 63 transitions. Word has length 34 [2020-09-24 22:39:02,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:02,614 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 63 transitions. [2020-09-24 22:39:02,614 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:02,614 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 63 transitions. [2020-09-24 22:39:02,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-24 22:39:02,616 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:02,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:02,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-24 22:39:02,617 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:02,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:02,617 INFO L82 PathProgramCache]: Analyzing trace with hash 186293384, now seen corresponding path program 1 times [2020-09-24 22:39:02,617 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:02,618 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012842620] [2020-09-24 22:39:02,618 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:02,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:02,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:04,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-24 22:39:04,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:04,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1748 [2020-09-24 22:39:04,378 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:04,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 24 [2020-09-24 22:39:04,379 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-09-24 22:39:04,379 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:04,399 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:04,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:04,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,402 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:04,402 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:04,402 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:04,402 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:04,402 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:04,403 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:04,403 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:04,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:04,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:04,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:04,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:04,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:04,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 528 [2020-09-24 22:39:04,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:04,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:04,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:04,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:04,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:04,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:04,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:04,968 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:04,968 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:04,968 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:04,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:04,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:04,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:04,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:05,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:05,026 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:05,026 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:05,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-24 22:39:05,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:05,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:05,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:05,054 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-24 22:39:05,055 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012842620] [2020-09-24 22:39:05,055 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:05,055 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:05,056 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1624718795] [2020-09-24 22:39:05,056 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:05,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:05,057 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:05,057 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:05,057 INFO L87 Difference]: Start difference. First operand 52 states and 63 transitions. Second operand 9 states. [2020-09-24 22:39:05,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:05,188 INFO L93 Difference]: Finished difference Result 100 states and 128 transitions. [2020-09-24 22:39:05,188 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:05,188 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 35 [2020-09-24 22:39:05,189 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:05,190 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:05,190 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:05,192 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:05,192 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:05,199 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 52. [2020-09-24 22:39:05,200 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-24 22:39:05,201 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 61 transitions. [2020-09-24 22:39:05,201 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 61 transitions. Word has length 35 [2020-09-24 22:39:05,201 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:05,202 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 61 transitions. [2020-09-24 22:39:05,202 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:05,202 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 61 transitions. [2020-09-24 22:39:05,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-24 22:39:05,204 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:05,204 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:05,205 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-24 22:39:05,205 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:05,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:05,205 INFO L82 PathProgramCache]: Analyzing trace with hash 1875452576, now seen corresponding path program 1 times [2020-09-24 22:39:05,206 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:05,206 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [953102356] [2020-09-24 22:39:05,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:05,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:05,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:05,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:06,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:09,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-09-24 22:39:10,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:39:10,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 29 [2020-09-24 22:39:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:39:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:10,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:10,253 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:10,253 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:10,253 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:10,253 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:10,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:10,254 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:10,254 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:10,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:10,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:10,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,280 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,547 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:10,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 53 [2020-09-24 22:39:12,924 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:12,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2661 [2020-09-24 22:39:12,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 10 [2020-09-24 22:39:12,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:12,926 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:12,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:12,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:12,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:12,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:12,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-09-24 22:39:12,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:12,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-24 22:39:12,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:12,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-24 22:39:12,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:12,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:13,012 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:13,015 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:13,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:13,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:13,053 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 10 [2020-09-24 22:39:13,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,061 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:13,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:13,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:13,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:13,063 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:13,063 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:13,064 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:13,064 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:13,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 27 [2020-09-24 22:39:13,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:13,076 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:13,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:13,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-24 22:39:13,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 8 [2020-09-24 22:39:13,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:13,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:13,085 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 5 proven. 6 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:13,086 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [953102356] [2020-09-24 22:39:13,087 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:13,087 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-09-24 22:39:13,088 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [595704009] [2020-09-24 22:39:13,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-24 22:39:13,089 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:13,089 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-24 22:39:13,089 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-24 22:39:13,089 INFO L87 Difference]: Start difference. First operand 52 states and 61 transitions. Second operand 8 states. [2020-09-24 22:39:13,241 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:13,241 INFO L93 Difference]: Finished difference Result 100 states and 123 transitions. [2020-09-24 22:39:13,242 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-24 22:39:13,242 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 50 [2020-09-24 22:39:13,242 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:13,243 INFO L225 Difference]: With dead ends: 100 [2020-09-24 22:39:13,244 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:13,248 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:13,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:13,265 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:13,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:13,267 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 63 transitions. [2020-09-24 22:39:13,270 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 63 transitions. Word has length 50 [2020-09-24 22:39:13,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:13,270 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 63 transitions. [2020-09-24 22:39:13,271 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-24 22:39:13,271 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 63 transitions. [2020-09-24 22:39:13,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-24 22:39:13,274 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:13,274 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:13,274 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-24 22:39:13,280 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:13,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:13,280 INFO L82 PathProgramCache]: Analyzing trace with hash 104828256, now seen corresponding path program 1 times [2020-09-24 22:39:13,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:13,281 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [112504153] [2020-09-24 22:39:13,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:13,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:13,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:13,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-24 22:39:18,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:39:18,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-24 22:39:18,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:18,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-24 22:39:18,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,316 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:18,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,318 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:18,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:18,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:18,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:18,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:18,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:18,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:18,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:18,321 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:18,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:18,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:18,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:21,613 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:21,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3285 [2020-09-24 22:39:21,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:21,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:21,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:21,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:21,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 177 [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:21,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,849 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:21,850 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:21,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:21,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:21,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:21,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-09-24 22:39:21,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:21,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:21,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:21,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:21,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:21,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:21,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:21,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:21,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:21,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:21,913 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:21,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:21,949 INFO L134 CoverageAnalysis]: Checked inductivity of 17 backedges. 7 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-09-24 22:39:21,949 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [112504153] [2020-09-24 22:39:21,949 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:21,950 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-24 22:39:21,950 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [592126896] [2020-09-24 22:39:21,950 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-24 22:39:21,951 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:21,951 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-24 22:39:21,951 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:21,951 INFO L87 Difference]: Start difference. First operand 54 states and 63 transitions. Second operand 11 states. [2020-09-24 22:39:22,152 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:22,152 INFO L93 Difference]: Finished difference Result 102 states and 124 transitions. [2020-09-24 22:39:22,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:22,152 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 51 [2020-09-24 22:39:22,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:22,154 INFO L225 Difference]: With dead ends: 102 [2020-09-24 22:39:22,154 INFO L226 Difference]: Without dead ends: 54 [2020-09-24 22:39:22,155 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=170, Unknown=0, NotChecked=0, Total=210 [2020-09-24 22:39:22,156 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2020-09-24 22:39:22,162 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 54. [2020-09-24 22:39:22,162 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-09-24 22:39:22,163 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 62 transitions. [2020-09-24 22:39:22,163 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 62 transitions. Word has length 51 [2020-09-24 22:39:22,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:22,164 INFO L479 AbstractCegarLoop]: Abstraction has 54 states and 62 transitions. [2020-09-24 22:39:22,164 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-24 22:39:22,164 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 62 transitions. [2020-09-24 22:39:22,165 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-24 22:39:22,165 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:22,165 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:22,166 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-24 22:39:22,166 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:22,166 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:22,166 INFO L82 PathProgramCache]: Analyzing trace with hash 1703786405, now seen corresponding path program 1 times [2020-09-24 22:39:22,166 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:22,167 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [596420298] [2020-09-24 22:39:22,167 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:22,171 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:22,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:22,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-09-24 22:39:27,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:27,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-09-24 22:39:27,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:27,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-24 22:39:27,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:27,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:27,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:27,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:27,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:27,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,328 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,328 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-24 22:39:27,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-09-24 22:39:27,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-24 22:39:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-24 22:39:27,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:27,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-24 22:39:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-24 22:39:27,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:27,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:27,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,486 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:27,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-24 22:39:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:27,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:27,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,511 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,522 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:27,523 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,523 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-24 22:39:27,523 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,524 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:27,524 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,543 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:27,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,559 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:27,559 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:27,560 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:27,568 INFO L134 CoverageAnalysis]: Checked inductivity of 18 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-09-24 22:39:27,568 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [596420298] [2020-09-24 22:39:27,569 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:27,569 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-24 22:39:27,569 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2056114987] [2020-09-24 22:39:27,570 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-24 22:39:27,570 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:27,570 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-24 22:39:27,570 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=107, Unknown=0, NotChecked=0, Total=132 [2020-09-24 22:39:27,570 INFO L87 Difference]: Start difference. First operand 54 states and 62 transitions. Second operand 12 states. [2020-09-24 22:39:27,706 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:27,706 INFO L93 Difference]: Finished difference Result 84 states and 103 transitions. [2020-09-24 22:39:27,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-24 22:39:27,706 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 52 [2020-09-24 22:39:27,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:27,708 INFO L225 Difference]: With dead ends: 84 [2020-09-24 22:39:27,708 INFO L226 Difference]: Without dead ends: 78 [2020-09-24 22:39:27,709 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=44, Invalid=196, Unknown=0, NotChecked=0, Total=240 [2020-09-24 22:39:27,709 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-24 22:39:27,721 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 66. [2020-09-24 22:39:27,721 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-24 22:39:27,722 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-09-24 22:39:27,723 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 52 [2020-09-24 22:39:27,723 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:27,723 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-09-24 22:39:27,723 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-24 22:39:27,724 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-09-24 22:39:27,724 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-09-24 22:39:27,725 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:27,726 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:27,727 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-24 22:39:27,727 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:27,727 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:27,727 INFO L82 PathProgramCache]: Analyzing trace with hash -176890171, now seen corresponding path program 1 times [2020-09-24 22:39:27,727 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:27,728 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [576594798] [2020-09-24 22:39:27,728 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:27,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:27,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:27,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:28,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:29,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-09-24 22:39:32,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-24 22:39:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-24 22:39:32,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-24 22:39:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 30 [2020-09-24 22:39:32,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-09-24 22:39:32,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,753 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:32,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,756 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:32,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:32,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:32,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:32,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:32,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:32,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:32,759 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:32,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:32,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:32,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-09-24 22:39:36,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-09-24 22:39:36,159 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3395 [2020-09-24 22:39:36,159 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,159 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-09-24 22:39:36,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:36,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,165 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-09-24 22:39:36,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-09-24 22:39:36,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:36,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-09-24 22:39:36,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:36,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-24 22:39:36,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:36,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:36,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:36,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,326 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:36,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-24 22:39:36,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:36,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-24 22:39:36,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,355 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 29 [2020-09-24 22:39:36,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,357 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,361 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:36,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:36,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:36,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:36,362 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 9 [2020-09-24 22:39:36,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:36,362 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:36,367 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 13 proven. 2 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-09-24 22:39:36,367 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [576594798] [2020-09-24 22:39:36,368 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:36,368 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:36,368 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188307421] [2020-09-24 22:39:36,369 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:36,369 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:36,369 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:36,370 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:36,370 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 9 states. [2020-09-24 22:39:36,512 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:36,512 INFO L93 Difference]: Finished difference Result 129 states and 170 transitions. [2020-09-24 22:39:36,514 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-24 22:39:36,514 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 53 [2020-09-24 22:39:36,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:36,515 INFO L225 Difference]: With dead ends: 129 [2020-09-24 22:39:36,515 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:39:36,516 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-09-24 22:39:36,517 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:39:36,524 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 22:39:36,525 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:36,526 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 82 transitions. [2020-09-24 22:39:36,526 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 82 transitions. Word has length 53 [2020-09-24 22:39:36,526 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:36,526 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 82 transitions. [2020-09-24 22:39:36,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 82 transitions. [2020-09-24 22:39:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-24 22:39:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:36,528 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:36,528 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-24 22:39:36,529 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:36,529 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:36,529 INFO L82 PathProgramCache]: Analyzing trace with hash 589230722, now seen corresponding path program 1 times [2020-09-24 22:39:36,529 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:36,529 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1354379797] [2020-09-24 22:39:36,529 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:36,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:36,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:36,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:37,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:38,986 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:39,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-24 22:39:41,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 22:39:41,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-09-24 22:39:41,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 56 [2020-09-24 22:39:41,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:41,545 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:41,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-24 22:39:41,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:41,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-24 22:39:41,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:41,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-24 22:39:41,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:41,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:41,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-24 22:39:41,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-24 22:39:41,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:41,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,638 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:41,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,316 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:42,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:43,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:44,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5003 [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:46,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-09-24 22:39:46,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:46,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,587 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:46,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,605 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,606 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:46,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:46,609 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-24 22:39:46,610 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:46,612 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:46,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:46,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,636 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:46,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-09-24 22:39:47,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-24 22:39:47,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 921 [2020-09-24 22:39:47,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-24 22:39:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 7 [2020-09-24 22:39:47,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 35 [2020-09-24 22:39:47,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:47,549 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,731 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-09-24 22:39:47,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-24 22:39:47,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 180 [2020-09-24 22:39:47,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-24 22:39:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-09-24 22:39:47,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-24 22:39:47,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 12 [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,768 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-24 22:39:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-24 22:39:47,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-09-24 22:39:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:47,794 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,794 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-24 22:39:47,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-24 22:39:47,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-24 22:39:47,795 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:47,795 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 28 [2020-09-24 22:39:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:47,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:47,802 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-24 22:39:47,803 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-24 22:39:47,803 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-24 22:39:47,803 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-24 22:39:47,803 FATAL L256 erpolLogProxyWrapper]: Heuristic: HIGHLEXORDER [2020-09-24 22:39:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-24 22:39:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 3 [2020-09-24 22:39:47,804 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-24 22:39:47,804 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-24 22:39:47,843 INFO L134 CoverageAnalysis]: Checked inductivity of 85 backedges. 51 proven. 5 refuted. 0 times theorem prover too weak. 29 trivial. 0 not checked. [2020-09-24 22:39:47,843 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1354379797] [2020-09-24 22:39:47,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-24 22:39:47,844 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-24 22:39:47,844 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [740730627] [2020-09-24 22:39:47,844 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-24 22:39:47,845 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-24 22:39:47,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-24 22:39:47,845 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-24 22:39:47,845 INFO L87 Difference]: Start difference. First operand 68 states and 82 transitions. Second operand 9 states. [2020-09-24 22:39:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-24 22:39:48,041 INFO L93 Difference]: Finished difference Result 130 states and 163 transitions. [2020-09-24 22:39:48,043 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-24 22:39:48,043 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 86 [2020-09-24 22:39:48,043 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-24 22:39:48,045 INFO L225 Difference]: With dead ends: 130 [2020-09-24 22:39:48,045 INFO L226 Difference]: Without dead ends: 68 [2020-09-24 22:39:48,046 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=36, Invalid=120, Unknown=0, NotChecked=0, Total=156 [2020-09-24 22:39:48,046 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-24 22:39:48,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-24 22:39:48,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-24 22:39:48,053 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 81 transitions. [2020-09-24 22:39:48,053 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 81 transitions. Word has length 86 [2020-09-24 22:39:48,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-24 22:39:48,054 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 81 transitions. [2020-09-24 22:39:48,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-24 22:39:48,054 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 81 transitions. [2020-09-24 22:39:48,055 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-09-24 22:39:48,055 INFO L414 BasicCegarLoop]: Found error trace [2020-09-24 22:39:48,055 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-24 22:39:48,055 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-24 22:39:48,056 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-24 22:39:48,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-24 22:39:48,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1513763016, now seen corresponding path program 2 times [2020-09-24 22:39:48,056 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-24 22:39:48,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [489497727] [2020-09-24 22:39:48,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-24 22:39:48,063 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-24 22:39:48,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:48,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-24 22:39:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking...