/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=WIDESTAMONGSMALL --traceabstraction.additional.smt.options tolerance=1.0 --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/recHanoi03-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:52:52,844 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:52:52,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:52:52,873 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:52:52,874 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:52:52,875 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:52:52,876 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:52:52,878 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:52:52,880 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:52:52,881 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:52:52,882 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:52:52,883 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:52:52,883 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:52:52,884 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:52:52,885 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:52:52,886 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:52:52,887 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:52:52,888 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:52:52,890 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:52:52,892 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:52:52,893 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:52:52,895 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:52:52,896 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:52:52,897 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:52:52,900 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:52:52,900 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:52:52,900 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:52:52,901 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:52:52,902 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:52:52,903 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:52:52,903 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:52:52,904 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:52:52,905 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:52:52,908 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:52:52,909 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:52:52,909 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:52:52,910 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:52:52,911 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:52:52,911 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:52:52,912 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:52:52,913 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:52:52,914 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-09-25 08:52:52,941 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:52:52,941 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:52:52,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:52:52,943 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:52:52,943 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:52:52,943 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:52:52,943 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:52:52,944 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:52:52,944 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:52:52,944 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:52:52,944 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:52:52,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:52:52,945 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:52:52,945 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:52:52,945 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:52:52,945 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:52:52,945 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:52:52,946 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:52:52,946 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:52:52,946 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:52:52,946 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:52:52,947 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:52,947 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:52:52,947 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:52:52,947 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:52:52,947 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:52:52,948 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:52:52,948 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:52:52,948 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:52:52,948 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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;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=WIDESTAMONGSMALL;tolerance=1.0;log-additional-information=true; [2020-09-25 08:52:53,438 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:52:53,469 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:52:53,474 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:52:53,476 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:52:53,477 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:52:53,478 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-25 08:52:53,557 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af4c7d10/9dd4fd5966b74852adb170dbfa6681c5/FLAGa551af747 [2020-09-25 08:52:54,087 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:52:54,088 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/recHanoi03-2.c [2020-09-25 08:52:54,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af4c7d10/9dd4fd5966b74852adb170dbfa6681c5/FLAGa551af747 [2020-09-25 08:52:54,409 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/9af4c7d10/9dd4fd5966b74852adb170dbfa6681c5 [2020-09-25 08:52:54,424 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:52:54,430 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:52:54,432 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:54,432 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:52:54,436 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:52:54,438 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,442 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7a29a149 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54, skipping insertion in model container [2020-09-25 08:52:54,442 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,452 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:52:54,479 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:52:54,702 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:54,709 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:52:54,729 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:52:54,748 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:52:54,749 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54 WrapperNode [2020-09-25 08:52:54,749 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:52:54,750 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:52:54,750 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:52:54,750 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:52:54,769 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,769 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,853 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,853 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,859 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,863 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,865 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... [2020-09-25 08:52:54,866 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:52:54,866 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:52:54,867 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:52:54,867 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:52:54,868 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:52:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:52:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:52:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure hanoi [2020-09-25 08:52:54,939 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:52:54,939 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:52:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:52:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure hanoi [2020-09-25 08:52:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:52:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:52:54,940 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:52:55,171 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:52:55,171 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:52:55,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:55 BoogieIcfgContainer [2020-09-25 08:52:55,177 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:52:55,179 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:52:55,179 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:52:55,183 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:52:55,183 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:52:54" (1/3) ... [2020-09-25 08:52:55,184 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e7bd65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:55, skipping insertion in model container [2020-09-25 08:52:55,184 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:52:54" (2/3) ... [2020-09-25 08:52:55,185 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@49e7bd65 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:52:55, skipping insertion in model container [2020-09-25 08:52:55,185 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:52:55" (3/3) ... [2020-09-25 08:52:55,187 INFO L109 eAbstractionObserver]: Analyzing ICFG recHanoi03-2.c [2020-09-25 08:52:55,200 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:52:55,211 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:52:55,241 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:52:55,303 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:52:55,303 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:52:55,303 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:52:55,304 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:52:55,304 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:52:55,304 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:52:55,304 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:52:55,305 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:52:55,331 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-09-25 08:52:55,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-09-25 08:52:55,341 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:55,342 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:55,343 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:55,351 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:55,351 INFO L82 PathProgramCache]: Analyzing trace with hash 607163649, now seen corresponding path program 1 times [2020-09-25 08:52:55,362 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:55,363 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [338805269] [2020-09-25 08:52:55,363 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:55,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:55,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:55,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-09-25 08:52:55,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:55,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 08:52:55,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:55,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:55,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:52:55,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-09-25 08:52:55,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 7 [2020-09-25 08:52:55,847 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:55,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:55,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:55,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:55,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:55,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:52:55,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:55,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:55,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:55,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:55,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:55,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:55,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:52:55,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:55,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:55,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:55,890 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:55,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:55,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:52:55,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:55,892 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:52:55,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:55,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:55,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:55,956 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-25 08:52:55,960 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [338805269] [2020-09-25 08:52:55,964 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:52:55,964 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-25 08:52:55,965 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1370682622] [2020-09-25 08:52:55,974 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:52:55,974 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:55,992 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:52:55,994 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:52:55,996 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 7 states. [2020-09-25 08:52:56,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:56,171 INFO L93 Difference]: Finished difference Result 45 states and 49 transitions. [2020-09-25 08:52:56,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-25 08:52:56,174 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-09-25 08:52:56,175 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:56,188 INFO L225 Difference]: With dead ends: 45 [2020-09-25 08:52:56,189 INFO L226 Difference]: Without dead ends: 26 [2020-09-25 08:52:56,193 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=26, Invalid=64, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:56,216 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-09-25 08:52:56,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-09-25 08:52:56,251 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-09-25 08:52:56,253 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-09-25 08:52:56,255 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 19 [2020-09-25 08:52:56,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:56,256 INFO L479 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-09-25 08:52:56,256 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:52:56,256 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-09-25 08:52:56,258 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-25 08:52:56,259 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:56,259 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] [2020-09-25 08:52:56,259 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:52:56,260 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:56,260 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:56,260 INFO L82 PathProgramCache]: Analyzing trace with hash 1887435767, now seen corresponding path program 1 times [2020-09-25 08:52:56,260 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:56,261 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128123600] [2020-09-25 08:52:56,261 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:56,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,567 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-09-25 08:52:56,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-09-25 08:52:56,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:52:56,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 08:52:56,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:56,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:56,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:56,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,601 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:56,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:52:56,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:52:56,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-09-25 08:52:56,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:52:56,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:56,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:56,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:56,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:56,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:56,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:56,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:56,775 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:52:56,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:56,776 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:56,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:56,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:56,847 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-25 08:52:56,847 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128123600] [2020-09-25 08:52:56,848 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:56,848 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-09-25 08:52:56,848 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [788227126] [2020-09-25 08:52:56,851 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-09-25 08:52:56,851 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:56,851 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-09-25 08:52:56,852 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-09-25 08:52:56,852 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-09-25 08:52:57,039 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:57,039 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-09-25 08:52:57,040 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-25 08:52:57,040 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 27 [2020-09-25 08:52:57,041 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:57,042 INFO L225 Difference]: With dead ends: 37 [2020-09-25 08:52:57,042 INFO L226 Difference]: Without dead ends: 31 [2020-09-25 08:52:57,043 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=187, Unknown=0, NotChecked=0, Total=240 [2020-09-25 08:52:57,044 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2020-09-25 08:52:57,049 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 31. [2020-09-25 08:52:57,050 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2020-09-25 08:52:57,051 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 32 transitions. [2020-09-25 08:52:57,051 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 32 transitions. Word has length 27 [2020-09-25 08:52:57,052 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:57,052 INFO L479 AbstractCegarLoop]: Abstraction has 31 states and 32 transitions. [2020-09-25 08:52:57,052 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-09-25 08:52:57,052 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 32 transitions. [2020-09-25 08:52:57,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-25 08:52:57,054 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:57,054 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:57,054 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:52:57,055 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:57,055 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:57,055 INFO L82 PathProgramCache]: Analyzing trace with hash 1929059777, now seen corresponding path program 2 times [2020-09-25 08:52:57,055 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:57,056 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405507651] [2020-09-25 08:52:57,056 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:57,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-09-25 08:52:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 282 [2020-09-25 08:52:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,352 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:52:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 08:52:57,353 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:57,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,386 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:57,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,389 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:52:57,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,447 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:57,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:52:57,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,448 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:52:57,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:52:57,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:57,486 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:52:57,518 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:52:57,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:57,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,575 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:57,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:57,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:57,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:57,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:57,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-09-25 08:52:57,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:57,594 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:57,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:57,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:57,648 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 1 proven. 11 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-09-25 08:52:57,649 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405507651] [2020-09-25 08:52:57,649 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:57,649 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-09-25 08:52:57,650 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [640541741] [2020-09-25 08:52:57,650 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-25 08:52:57,651 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:57,651 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-25 08:52:57,651 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=106, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:52:57,652 INFO L87 Difference]: Start difference. First operand 31 states and 32 transitions. Second operand 12 states. [2020-09-25 08:52:57,908 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:57,908 INFO L93 Difference]: Finished difference Result 42 states and 43 transitions. [2020-09-25 08:52:57,909 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-25 08:52:57,909 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 35 [2020-09-25 08:52:57,910 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:57,911 INFO L225 Difference]: With dead ends: 42 [2020-09-25 08:52:57,911 INFO L226 Difference]: Without dead ends: 36 [2020-09-25 08:52:57,912 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 48 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=78, Invalid=342, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:52:57,912 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-09-25 08:52:57,918 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 36. [2020-09-25 08:52:57,918 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-09-25 08:52:57,919 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 37 transitions. [2020-09-25 08:52:57,920 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 37 transitions. Word has length 35 [2020-09-25 08:52:57,920 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:57,920 INFO L479 AbstractCegarLoop]: Abstraction has 36 states and 37 transitions. [2020-09-25 08:52:57,920 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-25 08:52:57,921 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 37 transitions. [2020-09-25 08:52:57,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-25 08:52:57,922 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:57,922 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:57,923 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:52:57,923 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:57,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:57,924 INFO L82 PathProgramCache]: Analyzing trace with hash -1069340361, now seen corresponding path program 3 times [2020-09-25 08:52:57,924 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:57,924 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [145662060] [2020-09-25 08:52:57,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:57,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:57,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,416 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-09-25 08:52:58,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 467 [2020-09-25 08:52:58,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,417 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:52:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-09-25 08:52:58,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-09-25 08:52:58,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:58,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:58,458 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,458 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:52:58,458 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,459 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,461 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:52:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,565 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,565 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:52:58,565 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 08:52:58,566 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,566 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,566 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 08:52:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:52:58,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:58,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:52:58,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:52:58,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:52:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:52:58,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:58,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,736 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:52:58,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:52:58,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,738 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:52:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:52:58,739 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,776 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:52:58,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:58,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:58,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:58,791 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:52:58,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:58,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:52:58,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:58,792 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:52:58,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:58,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:52:58,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:58,844 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 2 proven. 25 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-09-25 08:52:58,844 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [145662060] [2020-09-25 08:52:58,844 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:52:58,845 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-09-25 08:52:58,845 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1463151137] [2020-09-25 08:52:58,846 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-25 08:52:58,846 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:52:58,846 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-25 08:52:58,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-25 08:52:58,847 INFO L87 Difference]: Start difference. First operand 36 states and 37 transitions. Second operand 14 states. [2020-09-25 08:52:59,201 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:52:59,202 INFO L93 Difference]: Finished difference Result 47 states and 48 transitions. [2020-09-25 08:52:59,202 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-09-25 08:52:59,202 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 43 [2020-09-25 08:52:59,203 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:52:59,204 INFO L225 Difference]: With dead ends: 47 [2020-09-25 08:52:59,204 INFO L226 Difference]: Without dead ends: 41 [2020-09-25 08:52:59,205 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 78 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=97, Invalid=553, Unknown=0, NotChecked=0, Total=650 [2020-09-25 08:52:59,206 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-09-25 08:52:59,211 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-09-25 08:52:59,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-09-25 08:52:59,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-09-25 08:52:59,213 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 43 [2020-09-25 08:52:59,213 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:52:59,214 INFO L479 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-09-25 08:52:59,214 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-25 08:52:59,214 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-09-25 08:52:59,215 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-09-25 08:52:59,216 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:52:59,216 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:52:59,216 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:52:59,216 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:52:59,217 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:52:59,217 INFO L82 PathProgramCache]: Analyzing trace with hash -287672703, now seen corresponding path program 4 times [2020-09-25 08:52:59,217 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:52:59,217 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1223158868] [2020-09-25 08:52:59,218 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:52:59,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:59,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:59,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:59,842 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:59,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-09-25 08:52:59,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:52:59,843 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 611 [2020-09-25 08:52:59,844 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:59,845 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:59,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:52:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:52:59,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 53 [2020-09-25 08:52:59,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:52:59,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:52:59,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:59,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:52:59,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:52:59,883 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:52:59,883 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:52:59,883 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:52:59,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:52:59,883 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:52:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:52:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:52:59,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:52:59,884 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:52:59,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:52:59,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:52:59,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,147 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:00,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:00,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 248 [2020-09-25 08:53:00,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,148 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:53:00,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:00,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:00,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:00,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 08:53:00,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,274 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:00,275 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:00,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,387 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:00,387 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,387 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:53:00,387 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,388 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,389 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:00,389 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,436 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:00,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:00,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:53:00,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,469 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:00,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:00,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:00,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:00,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:00,541 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:00,541 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:00,541 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:53:00,541 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:00,542 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:00,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:00,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:00,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:00,617 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 6 proven. 42 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-09-25 08:53:00,618 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1223158868] [2020-09-25 08:53:00,618 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:00,619 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:53:00,619 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1723089839] [2020-09-25 08:53:00,620 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:53:00,620 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:00,620 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:53:00,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:53:00,621 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 17 states. [2020-09-25 08:53:01,136 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:01,136 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-09-25 08:53:01,137 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:53:01,137 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 51 [2020-09-25 08:53:01,138 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:01,139 INFO L225 Difference]: With dead ends: 52 [2020-09-25 08:53:01,139 INFO L226 Difference]: Without dead ends: 46 [2020-09-25 08:53:01,140 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=132, Invalid=990, Unknown=0, NotChecked=0, Total=1122 [2020-09-25 08:53:01,140 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2020-09-25 08:53:01,146 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2020-09-25 08:53:01,146 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2020-09-25 08:53:01,147 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2020-09-25 08:53:01,147 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 51 [2020-09-25 08:53:01,148 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:01,148 INFO L479 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2020-09-25 08:53:01,148 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:53:01,148 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2020-09-25 08:53:01,150 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-09-25 08:53:01,150 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:01,150 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:01,150 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:53:01,150 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:01,151 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:01,151 INFO L82 PathProgramCache]: Analyzing trace with hash 389514871, now seen corresponding path program 5 times [2020-09-25 08:53:01,151 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:01,151 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1903539286] [2020-09-25 08:53:01,152 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:01,163 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:01,178 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:01,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-09-25 08:53:02,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:02,186 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1017 [2020-09-25 08:53:02,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:02,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-09-25 08:53:02,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:02,231 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:02,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:02,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,234 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:02,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,236 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:02,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:02,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:02,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-09-25 08:53:02,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,416 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 08:53:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,416 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:02,416 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,459 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:02,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-09-25 08:53:02,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,571 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:02,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:02,637 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,717 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:02,717 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 08:53:02,718 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,718 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:02,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:02,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:02,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:02,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:02,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 08:53:02,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:02,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:02,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:02,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:02,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:02,913 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:02,914 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:02,914 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:02,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-09-25 08:53:02,915 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:02,916 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:02,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:02,917 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:02,917 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:03,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:03,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:03,050 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:03,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:53:03,052 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:03,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:03,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:03,182 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 6 proven. 72 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 08:53:03,182 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1903539286] [2020-09-25 08:53:03,184 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:03,184 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-09-25 08:53:03,186 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1545417949] [2020-09-25 08:53:03,186 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-09-25 08:53:03,187 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:03,187 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-09-25 08:53:03,187 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-09-25 08:53:03,188 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand 20 states. [2020-09-25 08:53:03,838 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:03,838 INFO L93 Difference]: Finished difference Result 57 states and 58 transitions. [2020-09-25 08:53:03,839 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 08:53:03,839 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 59 [2020-09-25 08:53:03,840 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:03,842 INFO L225 Difference]: With dead ends: 57 [2020-09-25 08:53:03,842 INFO L226 Difference]: Without dead ends: 51 [2020-09-25 08:53:03,845 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 223 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=177, Invalid=1383, Unknown=0, NotChecked=0, Total=1560 [2020-09-25 08:53:03,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-09-25 08:53:03,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-09-25 08:53:03,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 08:53:03,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 52 transitions. [2020-09-25 08:53:03,856 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 52 transitions. Word has length 59 [2020-09-25 08:53:03,856 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:03,857 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 52 transitions. [2020-09-25 08:53:03,857 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-09-25 08:53:03,857 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 52 transitions. [2020-09-25 08:53:03,860 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-09-25 08:53:03,861 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:03,865 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:03,866 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:53:03,866 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:03,866 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:03,867 INFO L82 PathProgramCache]: Analyzing trace with hash 1451925313, now seen corresponding path program 6 times [2020-09-25 08:53:03,867 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:03,867 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [600558669] [2020-09-25 08:53:03,868 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:03,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:03,901 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:04,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,545 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,546 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-09-25 08:53:05,546 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:05,546 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1661 [2020-09-25 08:53:05,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,547 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:53:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:05,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-09-25 08:53:05,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:05,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:05,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,583 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:05,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:05,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:05,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,584 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:05,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:05,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:05,596 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:05,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:05,995 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:05,996 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:05,996 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:05,996 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 392 [2020-09-25 08:53:05,996 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:05,997 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-09-25 08:53:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:05,997 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:05,997 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:06,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 08:53:06,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,187 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:06,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:06,340 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-09-25 08:53:06,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,340 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,341 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:06,341 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,403 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:06,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-09-25 08:53:06,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,477 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:06,478 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:06,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 08:53:06,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,602 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:06,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:06,677 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:06,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 08:53:06,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,714 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:06,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:06,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:06,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:06,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:06,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:06,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:06,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:06,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:06,783 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:06,783 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:06,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:06,863 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 16 proven. 89 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-09-25 08:53:06,863 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [600558669] [2020-09-25 08:53:06,864 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:06,864 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 08:53:06,865 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2092202748] [2020-09-25 08:53:06,866 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 08:53:06,866 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:06,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 08:53:06,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=380, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:53:06,867 INFO L87 Difference]: Start difference. First operand 51 states and 52 transitions. Second operand 21 states. [2020-09-25 08:53:07,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:07,664 INFO L93 Difference]: Finished difference Result 62 states and 63 transitions. [2020-09-25 08:53:07,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 08:53:07,665 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 67 [2020-09-25 08:53:07,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:07,666 INFO L225 Difference]: With dead ends: 62 [2020-09-25 08:53:07,667 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 08:53:07,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=175, Invalid=1717, Unknown=0, NotChecked=0, Total=1892 [2020-09-25 08:53:07,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 08:53:07,674 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 08:53:07,675 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 08:53:07,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-09-25 08:53:07,676 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 67 [2020-09-25 08:53:07,676 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:07,676 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-09-25 08:53:07,677 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 08:53:07,677 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-09-25 08:53:07,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-09-25 08:53:07,678 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:07,678 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:07,681 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:53:07,681 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:07,681 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:07,682 INFO L82 PathProgramCache]: Analyzing trace with hash -2078207049, now seen corresponding path program 7 times [2020-09-25 08:53:07,682 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:07,682 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1576344558] [2020-09-25 08:53:07,682 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:07,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:07,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:07,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,219 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 98 [2020-09-25 08:53:09,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:09,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1516 [2020-09-25 08:53:09,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,220 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:09,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 83 [2020-09-25 08:53:09,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:09,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:09,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:09,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:53:09,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:09,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 444 [2020-09-25 08:53:09,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,720 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-09-25 08:53:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 08:53:09,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:09,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:09,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:09,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:09,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:09,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-09-25 08:53:09,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:09,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:53:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:09,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:09,941 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:09,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:09,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:09,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:10,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-09-25 08:53:10,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,120 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:10,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:10,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:10,181 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:10,271 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 88 [2020-09-25 08:53:10,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,272 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:10,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:10,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:10,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-09-25 08:53:10,399 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,399 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:10,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,400 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:10,400 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:10,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:10,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:10,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:10,502 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,558 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:10,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:10,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:53:10,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,587 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:10,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:10,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:10,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:10,692 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:10,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:10,693 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:10,693 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:53:10,693 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:10,693 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:10,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:10,694 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:10,829 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 10 proven. 137 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 08:53:10,830 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1576344558] [2020-09-25 08:53:10,830 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:10,830 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 08:53:10,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1093196072] [2020-09-25 08:53:10,831 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 08:53:10,831 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:10,832 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 08:53:10,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=499, Unknown=0, NotChecked=0, Total=552 [2020-09-25 08:53:10,832 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 24 states. [2020-09-25 08:53:12,032 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:12,032 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-09-25 08:53:12,033 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:53:12,033 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 75 [2020-09-25 08:53:12,033 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:12,035 INFO L225 Difference]: With dead ends: 67 [2020-09-25 08:53:12,035 INFO L226 Difference]: Without dead ends: 61 [2020-09-25 08:53:12,037 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 48 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 372 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=229, Invalid=2221, Unknown=0, NotChecked=0, Total=2450 [2020-09-25 08:53:12,037 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-09-25 08:53:12,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 61. [2020-09-25 08:53:12,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 08:53:12,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 62 transitions. [2020-09-25 08:53:12,043 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 62 transitions. Word has length 75 [2020-09-25 08:53:12,044 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:12,044 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 62 transitions. [2020-09-25 08:53:12,044 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 08:53:12,044 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 62 transitions. [2020-09-25 08:53:12,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 84 [2020-09-25 08:53:12,045 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:12,045 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:12,045 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:53:12,045 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:12,046 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:12,046 INFO L82 PathProgramCache]: Analyzing trace with hash 768055297, now seen corresponding path program 8 times [2020-09-25 08:53:12,046 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:12,046 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1296112811] [2020-09-25 08:53:12,047 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:12,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:12,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:12,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:13,869 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:13,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-09-25 08:53:13,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:13,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1805 [2020-09-25 08:53:13,870 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:13,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:53:13,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:13,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 93 [2020-09-25 08:53:13,871 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:13,908 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:13,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:13,909 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:13,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:13,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:13,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:13,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:53:13,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:13,912 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:13,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:13,913 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:13,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:13,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:53:14,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:14,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-09-25 08:53:14,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 08:53:14,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 08:53:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:14,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:14,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:53:14,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 215 [2020-09-25 08:53:14,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 08:53:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 08:53:14,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:14,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:14,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,732 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:14,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:14,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:14,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:14,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:14,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:14,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:14,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:14,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 147 [2020-09-25 08:53:14,962 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:14,962 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:14,963 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:14,964 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:15,038 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:15,043 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,154 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:15,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 08:53:15,156 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,156 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:15,157 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:15,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:15,212 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:15,273 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-09-25 08:53:15,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:15,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:15,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:15,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:15,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:53:15,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,368 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:15,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:15,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:15,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:15,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 08:53:15,453 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,453 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:15,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,454 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:15,454 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:15,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:15,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:15,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:15,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:15,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:15,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:15,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:15,639 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 4 proven. 185 refuted. 0 times theorem prover too weak. 67 trivial. 0 not checked. [2020-09-25 08:53:15,645 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1296112811] [2020-09-25 08:53:15,646 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:15,646 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 08:53:15,646 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1625034283] [2020-09-25 08:53:15,647 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 08:53:15,647 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:15,647 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 08:53:15,648 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=552, Unknown=0, NotChecked=0, Total=600 [2020-09-25 08:53:15,648 INFO L87 Difference]: Start difference. First operand 61 states and 62 transitions. Second operand 25 states. [2020-09-25 08:53:17,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:17,092 INFO L93 Difference]: Finished difference Result 72 states and 73 transitions. [2020-09-25 08:53:17,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 08:53:17,092 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 83 [2020-09-25 08:53:17,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:17,094 INFO L225 Difference]: With dead ends: 72 [2020-09-25 08:53:17,094 INFO L226 Difference]: Without dead ends: 66 [2020-09-25 08:53:17,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 72 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 52 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 410 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=219, Invalid=2643, Unknown=0, NotChecked=0, Total=2862 [2020-09-25 08:53:17,097 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-09-25 08:53:17,107 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 66. [2020-09-25 08:53:17,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 08:53:17,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 67 transitions. [2020-09-25 08:53:17,108 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 67 transitions. Word has length 83 [2020-09-25 08:53:17,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:17,108 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 67 transitions. [2020-09-25 08:53:17,109 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 08:53:17,109 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 67 transitions. [2020-09-25 08:53:17,109 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-09-25 08:53:17,110 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:17,110 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:17,110 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:53:17,110 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:17,110 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:17,111 INFO L82 PathProgramCache]: Analyzing trace with hash 1891881207, now seen corresponding path program 9 times [2020-09-25 08:53:17,111 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:17,111 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [33763361] [2020-09-25 08:53:17,111 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:17,127 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:17,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:17,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 118 [2020-09-25 08:53:19,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:19,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2090 [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-09-25 08:53:19,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:19,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:19,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,259 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:19,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:19,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:19,260 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:19,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:19,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:19,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:19,261 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:19,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:19,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:19,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:19,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,144 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:53:20,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:20,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 867 [2020-09-25 08:53:20,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,146 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-09-25 08:53:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 08:53:20,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:20,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:20,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,560 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:53:20,560 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-09-25 08:53:20,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,561 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-25 08:53:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 08:53:20,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:20,683 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:20,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:20,916 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:20,916 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:53:20,917 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:20,917 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 08:53:20,917 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:20,918 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 08:53:20,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:20,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 08:53:20,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:20,978 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:20,988 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:21,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 08:53:21,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:53:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:21,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:21,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-09-25 08:53:21,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:21,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-09-25 08:53:21,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:21,518 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,577 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:21,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-09-25 08:53:21,639 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:21,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:21,736 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,736 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 08:53:21,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:21,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:21,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,831 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:21,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 08:53:21,832 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,832 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,833 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:21,834 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:21,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:21,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:21,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:21,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:21,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:53:21,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:21,925 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:21,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:21,926 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:22,083 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 11 proven. 226 refuted. 0 times theorem prover too weak. 87 trivial. 0 not checked. [2020-09-25 08:53:22,083 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [33763361] [2020-09-25 08:53:22,084 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:22,085 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 08:53:22,085 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [144117637] [2020-09-25 08:53:22,086 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 08:53:22,086 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:22,086 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 08:53:22,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=649, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:53:22,087 INFO L87 Difference]: Start difference. First operand 66 states and 67 transitions. Second operand 27 states. [2020-09-25 08:53:23,645 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:23,646 INFO L93 Difference]: Finished difference Result 77 states and 78 transitions. [2020-09-25 08:53:23,646 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 08:53:23,646 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 91 [2020-09-25 08:53:23,647 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:23,648 INFO L225 Difference]: With dead ends: 77 [2020-09-25 08:53:23,648 INFO L226 Difference]: Without dead ends: 71 [2020-09-25 08:53:23,651 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 57 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 527 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=242, Invalid=3180, Unknown=0, NotChecked=0, Total=3422 [2020-09-25 08:53:23,651 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-09-25 08:53:23,656 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-09-25 08:53:23,657 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 08:53:23,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-09-25 08:53:23,658 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 91 [2020-09-25 08:53:23,658 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:23,658 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-09-25 08:53:23,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 08:53:23,658 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-09-25 08:53:23,659 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-09-25 08:53:23,659 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:23,660 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:23,660 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:53:23,660 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:23,660 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:23,660 INFO L82 PathProgramCache]: Analyzing trace with hash 2102223041, now seen corresponding path program 10 times [2020-09-25 08:53:23,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:23,661 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [657943417] [2020-09-25 08:53:23,661 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:23,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:23,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:24,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,573 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-09-25 08:53:26,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:26,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2892 [2020-09-25 08:53:26,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,574 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:53:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:26,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 113 [2020-09-25 08:53:26,575 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:26,609 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:26,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:26,612 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:26,612 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:26,612 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:26,612 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:26,613 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:26,613 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:26,613 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:26,614 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:26,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:26,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:26,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,036 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,037 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 08:53:27,037 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:27,037 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 406 [2020-09-25 08:53:27,037 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,038 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 46 [2020-09-25 08:53:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,038 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 08:53:27,038 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:27,106 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:53:27,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 08:53:27,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,427 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 08:53:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 08:53:27,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:27,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:27,735 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:27,735 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:53:27,735 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:27,735 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-09-25 08:53:27,736 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:27,736 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-25 08:53:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:27,736 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 08:53:27,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:27,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:27,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:27,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:53:28,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-09-25 08:53:28,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,009 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 08:53:28,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 08:53:28,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,260 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,260 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:28,260 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 174 [2020-09-25 08:53:28,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,261 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,261 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:53:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:28,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,432 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:28,433 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,433 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-09-25 08:53:28,433 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,433 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:28,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,501 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,573 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,574 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:28,574 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,574 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 08:53:28,574 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,575 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:28,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:28,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,742 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,742 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:28,742 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:53:28,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:28,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,808 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:28,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 08:53:28,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,853 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:28,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:28,920 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:28,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:28,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:28,952 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:28,953 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:28,953 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:28,953 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:53:28,954 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:28,954 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:28,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:28,955 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:28,955 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:29,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:29,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:29,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:29,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:29,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:29,054 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:29,054 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:53:29,054 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:29,054 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:29,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:29,055 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:29,055 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:29,195 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 14 proven. 286 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 08:53:29,195 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [657943417] [2020-09-25 08:53:29,195 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:29,195 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [29] total 29 [2020-09-25 08:53:29,196 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [434577618] [2020-09-25 08:53:29,198 INFO L459 AbstractCegarLoop]: Interpolant automaton has 29 states [2020-09-25 08:53:29,198 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:29,198 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 29 interpolants. [2020-09-25 08:53:29,199 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=57, Invalid=755, Unknown=0, NotChecked=0, Total=812 [2020-09-25 08:53:29,199 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 29 states. [2020-09-25 08:53:31,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:31,062 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-09-25 08:53:31,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 08:53:31,062 INFO L78 Accepts]: Start accepts. Automaton has 29 states. Word has length 99 [2020-09-25 08:53:31,063 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:31,064 INFO L225 Difference]: With dead ends: 82 [2020-09-25 08:53:31,064 INFO L226 Difference]: Without dead ends: 76 [2020-09-25 08:53:31,067 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 86 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 62 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 636 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=264, Invalid=3768, Unknown=0, NotChecked=0, Total=4032 [2020-09-25 08:53:31,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-25 08:53:31,073 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-25 08:53:31,073 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 08:53:31,074 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 77 transitions. [2020-09-25 08:53:31,074 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 77 transitions. Word has length 99 [2020-09-25 08:53:31,074 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:31,074 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 77 transitions. [2020-09-25 08:53:31,074 INFO L480 AbstractCegarLoop]: Interpolant automaton has 29 states. [2020-09-25 08:53:31,075 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 77 transitions. [2020-09-25 08:53:31,075 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 108 [2020-09-25 08:53:31,076 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:31,076 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:31,076 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:53:31,076 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:31,076 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:31,077 INFO L82 PathProgramCache]: Analyzing trace with hash -505168329, now seen corresponding path program 11 times [2020-09-25 08:53:31,077 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:31,077 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1305338122] [2020-09-25 08:53:31,077 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:31,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:31,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:31,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,628 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 138 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2522 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-09-25 08:53:33,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:33,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:33,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:33,662 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:33,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:33,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:33,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:33,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:33,663 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:33,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:33,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:33,664 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:33,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:33,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:34,675 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:34,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 08:53:34,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:34,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 994 [2020-09-25 08:53:34,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:34,677 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 50 [2020-09-25 08:53:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:34,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-09-25 08:53:34,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:34,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:34,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:34,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 08:53:35,078 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 08:53:35,078 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,078 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 47 [2020-09-25 08:53:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 108 [2020-09-25 08:53:35,079 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:35,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:35,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:53:35,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 230 [2020-09-25 08:53:35,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,391 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 08:53:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 08:53:35,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,435 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:35,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 210 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-09-25 08:53:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 88 [2020-09-25 08:53:35,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:35,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:35,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:35,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-09-25 08:53:35,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:35,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-09-25 08:53:35,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:35,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:35,933 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:35,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,046 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:53:36,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-09-25 08:53:36,047 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:36,103 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:53:36,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 08:53:36,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,216 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 08:53:36,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 08:53:36,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:53:36,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,378 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,378 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:53:36,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-09-25 08:53:36,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,379 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:53:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-09-25 08:53:36,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:53:36,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 50 [2020-09-25 08:53:36,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,511 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:53:36,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-09-25 08:53:36,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,576 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,615 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:53:36,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-09-25 08:53:36,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:53:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-09-25 08:53:36,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,686 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,689 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:53:36,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 08:53:36,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,706 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:53:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-09-25 08:53:36,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:53:36,794 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:53:36,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:36,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-09-25 08:53:36,804 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:36,805 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:36,805 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-09-25 08:53:36,805 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:36,967 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 18 proven. 339 refuted. 0 times theorem prover too weak. 127 trivial. 0 not checked. [2020-09-25 08:53:36,968 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1305338122] [2020-09-25 08:53:36,968 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:53:36,968 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [31] total 31 [2020-09-25 08:53:36,968 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435833811] [2020-09-25 08:53:36,968 INFO L459 AbstractCegarLoop]: Interpolant automaton has 31 states [2020-09-25 08:53:36,969 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:53:36,969 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 31 interpolants. [2020-09-25 08:53:36,969 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=869, Unknown=0, NotChecked=0, Total=930 [2020-09-25 08:53:36,969 INFO L87 Difference]: Start difference. First operand 76 states and 77 transitions. Second operand 31 states. [2020-09-25 08:53:38,943 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:53:38,943 INFO L93 Difference]: Finished difference Result 87 states and 88 transitions. [2020-09-25 08:53:38,944 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 42 states. [2020-09-25 08:53:38,944 INFO L78 Accepts]: Start accepts. Automaton has 31 states. Word has length 107 [2020-09-25 08:53:38,944 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:53:38,946 INFO L225 Difference]: With dead ends: 87 [2020-09-25 08:53:38,946 INFO L226 Difference]: Without dead ends: 81 [2020-09-25 08:53:38,948 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 93 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 67 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 751 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=286, Invalid=4406, Unknown=0, NotChecked=0, Total=4692 [2020-09-25 08:53:38,949 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2020-09-25 08:53:38,954 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 81. [2020-09-25 08:53:38,954 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 08:53:38,955 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 82 transitions. [2020-09-25 08:53:38,955 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 82 transitions. Word has length 107 [2020-09-25 08:53:38,955 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:53:38,955 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 82 transitions. [2020-09-25 08:53:38,956 INFO L480 AbstractCegarLoop]: Interpolant automaton has 31 states. [2020-09-25 08:53:38,956 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 82 transitions. [2020-09-25 08:53:38,957 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 116 [2020-09-25 08:53:38,957 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:53:38,957 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:53:38,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:53:38,957 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:53:38,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:53:38,958 INFO L82 PathProgramCache]: Analyzing trace with hash -1831339647, now seen corresponding path program 12 times [2020-09-25 08:53:38,958 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:53:38,958 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1250675873] [2020-09-25 08:53:38,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:53:38,975 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:38,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:39,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2710 [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-09-25 08:53:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 08:53:41,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 133 [2020-09-25 08:53:41,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:41,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:53:41,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:53:41,725 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:53:41,725 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:53:41,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:53:41,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:53:41,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:53:41,726 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:53:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:53:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:53:41,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:53:41,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:53:41,727 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-09-25 08:53:41,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:53:41,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking...