/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-simple/id_i25_o25-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 08:55:26,895 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 08:55:26,899 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 08:55:26,931 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 08:55:26,932 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 08:55:26,942 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 08:55:26,944 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 08:55:26,948 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 08:55:26,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 08:55:26,955 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 08:55:26,956 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 08:55:26,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 08:55:26,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 08:55:26,962 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 08:55:26,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 08:55:26,967 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 08:55:26,969 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 08:55:26,970 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 08:55:26,972 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 08:55:26,981 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 08:55:26,984 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 08:55:26,985 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 08:55:26,986 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 08:55:26,987 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 08:55:27,001 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 08:55:27,001 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 08:55:27,001 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 08:55:27,008 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 08:55:27,008 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 08:55:27,012 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 08:55:27,012 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 08:55:27,015 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 08:55:27,016 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 08:55:27,017 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 08:55:27,018 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 08:55:27,020 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 08:55:27,020 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 08:55:27,021 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 08:55:27,021 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 08:55:27,022 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 08:55:27,023 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 08:55:27,024 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 08:55:27,078 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 08:55:27,079 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 08:55:27,082 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 08:55:27,082 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 08:55:27,082 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 08:55:27,082 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 08:55:27,083 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 08:55:27,083 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 08:55:27,083 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 08:55:27,084 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 08:55:27,085 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 08:55:27,085 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 08:55:27,085 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 08:55:27,086 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 08:55:27,086 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 08:55:27,086 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 08:55:27,086 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 08:55:27,087 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 08:55:27,087 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 08:55:27,087 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 08:55:27,088 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 08:55:27,088 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 08:55:27,088 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 08:55:27,088 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 08:55:27,088 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 08:55:27,089 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 08:55:27,089 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 08:55:27,089 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 08:55:27,089 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 08:55:27,089 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 08:55:27,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 08:55:27,580 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 08:55:27,584 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 08:55:27,586 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 08:55:27,587 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 08:55:27,588 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 08:55:27,688 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d705508b/48838f602420461d9f09607d6e2eac33/FLAG15f94fb8c [2020-09-25 08:55:28,243 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 08:55:28,244 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/id_i25_o25-2.c [2020-09-25 08:55:28,252 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d705508b/48838f602420461d9f09607d6e2eac33/FLAG15f94fb8c [2020-09-25 08:55:28,589 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/4d705508b/48838f602420461d9f09607d6e2eac33 [2020-09-25 08:55:28,604 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 08:55:28,609 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 08:55:28,611 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 08:55:28,611 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 08:55:28,616 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 08:55:28,617 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,621 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@49b8db4d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28, skipping insertion in model container [2020-09-25 08:55:28,622 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,631 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 08:55:28,660 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 08:55:28,898 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:55:28,908 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 08:55:28,932 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 08:55:28,952 INFO L208 MainTranslator]: Completed translation [2020-09-25 08:55:28,953 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28 WrapperNode [2020-09-25 08:55:28,953 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 08:55:28,954 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 08:55:28,954 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 08:55:28,954 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 08:55:28,973 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,973 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,980 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,981 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,985 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,988 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,989 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (1/1) ... [2020-09-25 08:55:28,991 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 08:55:28,992 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 08:55:28,992 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 08:55:28,992 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 08:55:28,994 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (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 08:55:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 08:55:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 08:55:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure id [2020-09-25 08:55:29,210 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure id [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 08:55:29,211 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 08:55:29,442 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 08:55:29,442 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 08:55:29,448 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:55:29 BoogieIcfgContainer [2020-09-25 08:55:29,448 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 08:55:29,460 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 08:55:29,461 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 08:55:29,466 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 08:55:29,467 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 08:55:28" (1/3) ... [2020-09-25 08:55:29,468 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491bb9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:55:29, skipping insertion in model container [2020-09-25 08:55:29,470 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 08:55:28" (2/3) ... [2020-09-25 08:55:29,484 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@491bb9db and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 08:55:29, skipping insertion in model container [2020-09-25 08:55:29,485 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 08:55:29" (3/3) ... [2020-09-25 08:55:29,491 INFO L109 eAbstractionObserver]: Analyzing ICFG id_i25_o25-2.c [2020-09-25 08:55:29,525 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 08:55:29,536 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 08:55:29,577 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 08:55:29,608 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 08:55:29,608 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 08:55:29,608 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 08:55:29,609 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 08:55:29,609 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 08:55:29,609 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 08:55:29,609 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 08:55:29,609 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 08:55:29,633 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-09-25 08:55:29,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-09-25 08:55:29,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:29,644 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 08:55:29,645 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:29,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:29,652 INFO L82 PathProgramCache]: Analyzing trace with hash 1037734449, now seen corresponding path program 1 times [2020-09-25 08:55:29,661 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:29,662 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1810896192] [2020-09-25 08:55:29,662 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:29,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:29,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:29,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,045 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:30,046 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 08:55:30,046 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:30,046 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 251 [2020-09-25 08:55:30,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:30,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 08:55:30,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-09-25 08:55:30,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-09-25 08:55:30,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 08:55:30,123 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:30,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:30,127 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:30,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:30,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:30,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 08:55:30,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:30,130 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:30,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:30,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:30,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:30,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:30,140 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:30,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:30,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:30,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:30,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:55:30,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:30,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:30,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:30,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:30,182 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 08:55:30,183 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1810896192] [2020-09-25 08:55:30,185 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 08:55:30,186 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 08:55:30,187 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [20832231] [2020-09-25 08:55:30,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 08:55:30,194 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:30,208 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 08:55:30,209 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 08:55:30,211 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 5 states. [2020-09-25 08:55:30,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:30,308 INFO L93 Difference]: Finished difference Result 37 states and 40 transitions. [2020-09-25 08:55:30,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 08:55:30,311 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 16 [2020-09-25 08:55:30,312 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:30,325 INFO L225 Difference]: With dead ends: 37 [2020-09-25 08:55:30,326 INFO L226 Difference]: Without dead ends: 23 [2020-09-25 08:55:30,332 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-25 08:55:30,355 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-09-25 08:55:30,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-09-25 08:55:30,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-09-25 08:55:30,387 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-09-25 08:55:30,389 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 16 [2020-09-25 08:55:30,390 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:30,390 INFO L479 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-09-25 08:55:30,390 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 08:55:30,391 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-09-25 08:55:30,393 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-09-25 08:55:30,393 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:30,393 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] [2020-09-25 08:55:30,394 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 08:55:30,394 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:30,394 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:30,395 INFO L82 PathProgramCache]: Analyzing trace with hash -1478812441, now seen corresponding path program 1 times [2020-09-25 08:55:30,395 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:30,395 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [564073929] [2020-09-25 08:55:30,396 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:30,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:30,919 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 35 [2020-09-25 08:55:30,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:30,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 506 [2020-09-25 08:55:30,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:30,923 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 08:55:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 22 [2020-09-25 08:55:30,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 12 [2020-09-25 08:55:30,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:30,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:30,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:30,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:30,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:30,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:55:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:30,959 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:30,960 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:30,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:30,966 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:30,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,012 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:31,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,013 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-09-25 08:55:31,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,014 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,015 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:31,015 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,040 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:31,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:31,060 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-09-25 08:55:31,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:31,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,080 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 08:55:31,080 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [564073929] [2020-09-25 08:55:31,080 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:31,081 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 08:55:31,081 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1349550040] [2020-09-25 08:55:31,083 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 08:55:31,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:31,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 08:55:31,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-09-25 08:55:31,085 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 7 states. [2020-09-25 08:55:31,179 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:31,179 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-09-25 08:55:31,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-09-25 08:55:31,180 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 24 [2020-09-25 08:55:31,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:31,181 INFO L225 Difference]: With dead ends: 34 [2020-09-25 08:55:31,182 INFO L226 Difference]: Without dead ends: 28 [2020-09-25 08:55:31,183 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:55:31,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-09-25 08:55:31,189 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2020-09-25 08:55:31,189 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 28 states. [2020-09-25 08:55:31,190 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 29 transitions. [2020-09-25 08:55:31,191 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 29 transitions. Word has length 24 [2020-09-25 08:55:31,191 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:31,191 INFO L479 AbstractCegarLoop]: Abstraction has 28 states and 29 transitions. [2020-09-25 08:55:31,191 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 08:55:31,192 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 29 transitions. [2020-09-25 08:55:31,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-09-25 08:55:31,193 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:31,193 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] [2020-09-25 08:55:31,194 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 08:55:31,194 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:31,194 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:31,194 INFO L82 PathProgramCache]: Analyzing trace with hash -1463730447, now seen corresponding path program 2 times [2020-09-25 08:55:31,195 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:31,195 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [277797446] [2020-09-25 08:55:31,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:31,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-09-25 08:55:31,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:31,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 508 [2020-09-25 08:55:31,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,716 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-09-25 08:55:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 27 [2020-09-25 08:55:31,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-09-25 08:55:31,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:31,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,743 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:31,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:31,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:31,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,816 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:31,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-09-25 08:55:31,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,818 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:31,819 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:31,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:31,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,898 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-09-25 08:55:31,898 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:31,899 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:31,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:31,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:31,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:31,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:31,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:31,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-09-25 08:55:31,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:31,941 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:31,941 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:31,942 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:31,961 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-09-25 08:55:31,962 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [277797446] [2020-09-25 08:55:31,962 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:31,962 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-09-25 08:55:31,963 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1584766265] [2020-09-25 08:55:31,963 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-25 08:55:31,963 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:31,964 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-25 08:55:31,964 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-09-25 08:55:31,964 INFO L87 Difference]: Start difference. First operand 28 states and 29 transitions. Second operand 9 states. [2020-09-25 08:55:32,049 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:32,049 INFO L93 Difference]: Finished difference Result 39 states and 40 transitions. [2020-09-25 08:55:32,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-25 08:55:32,050 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 32 [2020-09-25 08:55:32,050 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:32,051 INFO L225 Difference]: With dead ends: 39 [2020-09-25 08:55:32,052 INFO L226 Difference]: Without dead ends: 33 [2020-09-25 08:55:32,052 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=34, Invalid=98, Unknown=0, NotChecked=0, Total=132 [2020-09-25 08:55:32,053 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2020-09-25 08:55:32,058 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2020-09-25 08:55:32,058 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-09-25 08:55:32,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 34 transitions. [2020-09-25 08:55:32,060 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 34 transitions. Word has length 32 [2020-09-25 08:55:32,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:32,060 INFO L479 AbstractCegarLoop]: Abstraction has 33 states and 34 transitions. [2020-09-25 08:55:32,060 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-25 08:55:32,061 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 34 transitions. [2020-09-25 08:55:32,062 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-09-25 08:55:32,062 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:32,062 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] [2020-09-25 08:55:32,063 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 08:55:32,063 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:32,063 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:32,063 INFO L82 PathProgramCache]: Analyzing trace with hash 23346727, now seen corresponding path program 3 times [2020-09-25 08:55:32,064 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:32,064 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1099263971] [2020-09-25 08:55:32,064 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:32,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:32,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:32,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:32,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:32,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 55 [2020-09-25 08:55:32,928 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:32,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 854 [2020-09-25 08:55:32,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:32,929 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-09-25 08:55:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 32 [2020-09-25 08:55:32,930 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 08:55:32,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:32,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:32,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:32,958 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:32,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:32,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:32,960 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:32,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:55:32,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:32,961 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:32,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:32,963 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:32,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:32,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:32,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:33,103 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:33,103 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:33,103 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:33,104 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 129 [2020-09-25 08:55:33,104 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:33,104 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:33,104 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:33,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:33,105 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:33,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:33,134 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:33,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:33,207 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:33,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:33,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:33,208 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:55:33,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:33,209 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:33,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:33,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:33,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:33,242 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:33,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:33,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:33,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:33,282 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:33,282 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:33,282 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:55:33,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:33,283 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:33,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:33,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:33,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:33,315 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:33,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:33,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:33,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:33,328 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:33,328 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:55:33,328 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:33,328 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:33,329 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:33,329 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:33,350 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 0 proven. 21 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-09-25 08:55:33,350 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1099263971] [2020-09-25 08:55:33,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:33,351 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-09-25 08:55:33,351 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1111847424] [2020-09-25 08:55:33,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-09-25 08:55:33,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:33,352 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-09-25 08:55:33,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2020-09-25 08:55:33,353 INFO L87 Difference]: Start difference. First operand 33 states and 34 transitions. Second operand 11 states. [2020-09-25 08:55:33,459 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:33,460 INFO L93 Difference]: Finished difference Result 44 states and 45 transitions. [2020-09-25 08:55:33,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 08:55:33,461 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 40 [2020-09-25 08:55:33,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:33,463 INFO L225 Difference]: With dead ends: 44 [2020-09-25 08:55:33,463 INFO L226 Difference]: Without dead ends: 38 [2020-09-25 08:55:33,464 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:55:33,464 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-09-25 08:55:33,469 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-09-25 08:55:33,469 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-09-25 08:55:33,470 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-09-25 08:55:33,470 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 40 [2020-09-25 08:55:33,471 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:33,471 INFO L479 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-09-25 08:55:33,471 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-09-25 08:55:33,471 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-09-25 08:55:33,473 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-09-25 08:55:33,473 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:33,473 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] [2020-09-25 08:55:33,473 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 08:55:33,473 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:33,474 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:33,474 INFO L82 PathProgramCache]: Analyzing trace with hash -649675855, now seen corresponding path program 4 times [2020-09-25 08:55:33,474 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:33,474 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [154027746] [2020-09-25 08:55:33,475 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:33,484 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:33,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:33,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:34,937 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:34,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-09-25 08:55:34,938 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:34,938 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1450 [2020-09-25 08:55:34,938 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:34,939 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 08:55:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 37 [2020-09-25 08:55:34,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-09-25 08:55:34,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:34,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:34,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:34,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:34,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:34,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:34,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:34,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:34,970 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:34,970 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:34,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:34,972 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:34,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:34,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:34,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:34,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:35,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:55:35,156 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:35,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-09-25 08:55:35,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:35,157 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:35,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:55:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:35,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:55:35,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:35,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:35,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:35,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:35,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:35,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:35,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-09-25 08:55:35,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:35,312 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:35,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:35,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:35,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:35,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:35,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:35,367 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:35,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:35,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:35,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-09-25 08:55:35,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:35,435 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:35,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:35,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:35,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:55:35,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:35,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:35,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,515 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:35,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:35,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:35,516 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 08:55:35,516 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:35,516 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:35,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:35,517 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:35,517 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:35,557 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:35,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:35,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:35,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:35,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:35,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:55:35,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:35,576 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:35,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:35,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:35,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:35,604 INFO L134 CoverageAnalysis]: Checked inductivity of 64 backedges. 0 proven. 38 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-09-25 08:55:35,605 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [154027746] [2020-09-25 08:55:35,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:35,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-09-25 08:55:35,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1078865865] [2020-09-25 08:55:35,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-09-25 08:55:35,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:35,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-09-25 08:55:35,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=117, Unknown=0, NotChecked=0, Total=156 [2020-09-25 08:55:35,608 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 13 states. [2020-09-25 08:55:35,752 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:35,752 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-09-25 08:55:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 08:55:35,753 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 48 [2020-09-25 08:55:35,754 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:35,757 INFO L225 Difference]: With dead ends: 49 [2020-09-25 08:55:35,757 INFO L226 Difference]: Without dead ends: 43 [2020-09-25 08:55:35,759 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=77, Invalid=229, Unknown=0, NotChecked=0, Total=306 [2020-09-25 08:55:35,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2020-09-25 08:55:35,769 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 43. [2020-09-25 08:55:35,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2020-09-25 08:55:35,771 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 44 transitions. [2020-09-25 08:55:35,772 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 44 transitions. Word has length 48 [2020-09-25 08:55:35,772 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:35,772 INFO L479 AbstractCegarLoop]: Abstraction has 43 states and 44 transitions. [2020-09-25 08:55:35,772 INFO L480 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-09-25 08:55:35,773 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 44 transitions. [2020-09-25 08:55:35,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 08:55:35,777 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:35,778 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] [2020-09-25 08:55:35,778 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 08:55:35,778 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:35,779 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:35,782 INFO L82 PathProgramCache]: Analyzing trace with hash 899977063, now seen corresponding path program 5 times [2020-09-25 08:55:35,782 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:35,782 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [591071083] [2020-09-25 08:55:35,782 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:35,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:35,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:35,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:37,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:37,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-09-25 08:55:37,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:37,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2099 [2020-09-25 08:55:37,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:37,898 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-09-25 08:55:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 42 [2020-09-25 08:55:37,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 32 [2020-09-25 08:55:37,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:37,922 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:37,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:37,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:37,925 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:37,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:37,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:37,926 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:37,926 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:37,927 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:37,927 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:37,927 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:37,930 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:37,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:37,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,167 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:55:38,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 227 [2020-09-25 08:55:38,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,169 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:55:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:55:38,170 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:38,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:38,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:38,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,376 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:55:38,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-09-25 08:55:38,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,377 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:55:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,378 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:55:38,378 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:38,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:38,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:38,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:38,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-09-25 08:55:38,539 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,539 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:38,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:38,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:38,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:38,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:38,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 08:55:38,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,675 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,676 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:38,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:55:38,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:38,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:38,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:38,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 08:55:38,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:38,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:38,762 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:55:38,817 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:38,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:38,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:38,831 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:38,832 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:38,832 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:38,833 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:55:38,833 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:38,833 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:38,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:38,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:38,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:55:38,902 INFO L134 CoverageAnalysis]: Checked inductivity of 100 backedges. 0 proven. 60 refuted. 0 times theorem prover too weak. 40 trivial. 0 not checked. [2020-09-25 08:55:38,902 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [591071083] [2020-09-25 08:55:38,904 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:38,904 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-09-25 08:55:38,905 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [299808578] [2020-09-25 08:55:38,906 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-09-25 08:55:38,907 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:38,907 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-09-25 08:55:38,908 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=160, Unknown=0, NotChecked=0, Total=210 [2020-09-25 08:55:38,908 INFO L87 Difference]: Start difference. First operand 43 states and 44 transitions. Second operand 15 states. [2020-09-25 08:55:39,118 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:39,118 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2020-09-25 08:55:39,119 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 08:55:39,120 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 56 [2020-09-25 08:55:39,121 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:39,122 INFO L225 Difference]: With dead ends: 54 [2020-09-25 08:55:39,122 INFO L226 Difference]: Without dead ends: 48 [2020-09-25 08:55:39,124 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 85 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2020-09-25 08:55:39,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-09-25 08:55:39,135 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 48. [2020-09-25 08:55:39,136 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-09-25 08:55:39,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 49 transitions. [2020-09-25 08:55:39,138 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 49 transitions. Word has length 56 [2020-09-25 08:55:39,139 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:39,139 INFO L479 AbstractCegarLoop]: Abstraction has 48 states and 49 transitions. [2020-09-25 08:55:39,139 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-09-25 08:55:39,139 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 49 transitions. [2020-09-25 08:55:39,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-09-25 08:55:39,143 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:39,143 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] [2020-09-25 08:55:39,144 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 08:55:39,144 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:39,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:39,144 INFO L82 PathProgramCache]: Analyzing trace with hash 1000802417, now seen corresponding path program 6 times [2020-09-25 08:55:39,145 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:39,145 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [861889336] [2020-09-25 08:55:39,145 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:39,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:39,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:39,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:41,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:41,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-09-25 08:55:41,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:41,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2807 [2020-09-25 08:55:41,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:41,966 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:41,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 08:55:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 47 [2020-09-25 08:55:41,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 37 [2020-09-25 08:55:41,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:41,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:41,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:41,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:41,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:41,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:41,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:41,991 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:41,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:41,992 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:41,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:41,993 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:41,993 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:41,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:42,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,272 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,272 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:55:42,272 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 268 [2020-09-25 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:42,273 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:55:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:42,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:55:42,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:42,315 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:42,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,521 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,522 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:55:42,522 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:42,522 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-09-25 08:55:42,522 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:42,522 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:55:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:42,523 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:55:42,523 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:42,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:42,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:55:42,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:42,695 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-09-25 08:55:42,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:42,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:55:42,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:42,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:55:42,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:42,726 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:42,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:42,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:42,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-09-25 08:55:42,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:42,836 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:42,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:42,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:42,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:42,873 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:42,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,932 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,932 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:42,932 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:42,932 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:55:42,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:42,933 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:42,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:42,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:42,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:42,968 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:42,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:42,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:42,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:42,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:42,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:43,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:55:43,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:43,000 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:43,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:43,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:43,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:43,036 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:43,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:43,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:43,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:43,049 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:43,049 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:43,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:55:43,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:43,050 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:43,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:43,051 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:43,102 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 0 proven. 87 refuted. 0 times theorem prover too weak. 57 trivial. 0 not checked. [2020-09-25 08:55:43,102 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [861889336] [2020-09-25 08:55:43,103 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:43,103 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 08:55:43,105 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1260692527] [2020-09-25 08:55:43,108 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 08:55:43,108 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:43,108 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 08:55:43,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=205, Unknown=0, NotChecked=0, Total=272 [2020-09-25 08:55:43,109 INFO L87 Difference]: Start difference. First operand 48 states and 49 transitions. Second operand 17 states. [2020-09-25 08:55:43,268 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:43,268 INFO L93 Difference]: Finished difference Result 59 states and 60 transitions. [2020-09-25 08:55:43,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 08:55:43,268 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 64 [2020-09-25 08:55:43,269 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:43,270 INFO L225 Difference]: With dead ends: 59 [2020-09-25 08:55:43,270 INFO L226 Difference]: Without dead ends: 53 [2020-09-25 08:55:43,274 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 87 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=140, Invalid=412, Unknown=0, NotChecked=0, Total=552 [2020-09-25 08:55:43,275 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-25 08:55:43,280 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-25 08:55:43,280 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-25 08:55:43,281 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-09-25 08:55:43,282 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 64 [2020-09-25 08:55:43,282 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:43,282 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-09-25 08:55:43,282 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 08:55:43,282 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-09-25 08:55:43,283 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 73 [2020-09-25 08:55:43,283 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:43,284 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] [2020-09-25 08:55:43,284 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 08:55:43,284 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:43,284 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:43,284 INFO L82 PathProgramCache]: Analyzing trace with hash 1977618599, now seen corresponding path program 7 times [2020-09-25 08:55:43,285 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:43,285 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182836507] [2020-09-25 08:55:43,285 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:43,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:43,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:43,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:46,868 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:46,869 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 08:55:46,869 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:46,869 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3573 [2020-09-25 08:55:46,869 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:46,870 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-09-25 08:55:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 52 [2020-09-25 08:55:46,870 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-09-25 08:55:46,870 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:46,896 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:46,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:46,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:46,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:46,899 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:46,900 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:46,900 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:46,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:46,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:46,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:47,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:47,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:55:47,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:47,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-09-25 08:55:47,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:47,260 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:55:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:47,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:55:47,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:47,289 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:47,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:47,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:47,518 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:47,518 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:55:47,519 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:47,519 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-09-25 08:55:47,519 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:47,519 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:55:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:47,520 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:55:47,520 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:47,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:47,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:47,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:47,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:47,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:55:47,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:47,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-09-25 08:55:47,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:47,762 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:55:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:47,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:55:47,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:47,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:47,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:47,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:47,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:55:47,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:47,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-09-25 08:55:47,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:47,924 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:55:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:47,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:55:47,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:47,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:47,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:47,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:48,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:48,044 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:48,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:48,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-09-25 08:55:48,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:48,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:48,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:48,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:48,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:48,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:48,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:48,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:48,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:48,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:48,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 08:55:48,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:48,147 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:48,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:48,148 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:48,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:48,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:48,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:48,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:48,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:48,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:48,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:55:48,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:48,212 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:48,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:48,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:48,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:48,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:48,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:48,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:48,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:48,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:48,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:48,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:55:48,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:48,268 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:48,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:48,269 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:48,269 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:48,309 INFO L134 CoverageAnalysis]: Checked inductivity of 196 backedges. 0 proven. 119 refuted. 0 times theorem prover too weak. 77 trivial. 0 not checked. [2020-09-25 08:55:48,310 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182836507] [2020-09-25 08:55:48,310 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:48,311 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-09-25 08:55:48,311 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [714571638] [2020-09-25 08:55:48,312 INFO L459 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-09-25 08:55:48,312 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:48,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-09-25 08:55:48,313 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=84, Invalid=258, Unknown=0, NotChecked=0, Total=342 [2020-09-25 08:55:48,313 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-09-25 08:55:48,486 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:48,487 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-09-25 08:55:48,487 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 08:55:48,487 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 72 [2020-09-25 08:55:48,488 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:48,489 INFO L225 Difference]: With dead ends: 64 [2020-09-25 08:55:48,489 INFO L226 Difference]: Without dead ends: 58 [2020-09-25 08:55:48,490 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=179, Invalid=523, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:55:48,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-09-25 08:55:48,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2020-09-25 08:55:48,496 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-09-25 08:55:48,497 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 59 transitions. [2020-09-25 08:55:48,497 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 59 transitions. Word has length 72 [2020-09-25 08:55:48,497 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:48,497 INFO L479 AbstractCegarLoop]: Abstraction has 58 states and 59 transitions. [2020-09-25 08:55:48,497 INFO L480 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-09-25 08:55:48,498 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 59 transitions. [2020-09-25 08:55:48,499 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 81 [2020-09-25 08:55:48,499 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:48,499 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] [2020-09-25 08:55:48,499 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 08:55:48,499 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:48,500 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:48,500 INFO L82 PathProgramCache]: Analyzing trace with hash 555623729, now seen corresponding path program 8 times [2020-09-25 08:55:48,500 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:48,500 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [224745996] [2020-09-25 08:55:48,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:48,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:48,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:48,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:52,805 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4294 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-09-25 08:55:52,806 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 57 [2020-09-25 08:55:52,807 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-09-25 08:55:52,807 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:52,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:52,824 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:52,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:52,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:52,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:52,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:52,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:52,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:52,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:52,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:53,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:53,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:55:53,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:53,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 354 [2020-09-25 08:55:53,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:53,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:53,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:53,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 08:55:53,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:55:53,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:53,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:53,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:53,505 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:53,505 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:55:53,505 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:53,505 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-09-25 08:55:53,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:53,506 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:55:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:53,506 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:55:53,506 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:53,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:53,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:53,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:53,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:53,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:53,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:55:53,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:53,792 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:53,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:53,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 158 [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:53,958 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:55:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:53,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:55:53,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:53,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:54,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,007 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:54,117 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:54,118 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:55:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:55:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:54,155 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:54,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:54,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:54,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:55:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:54,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:55:54,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:54,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:54,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:54,323 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:54,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:55:54,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:54,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-09-25 08:55:54,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:54,324 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:55:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:54,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:55:54,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:54,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:54,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:54,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:54,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:55:54,396 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:54,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-09-25 08:55:54,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:54,396 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:54,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:55:54,397 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:54,439 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:55:54,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:54,451 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:54,452 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:55:54,452 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:54,452 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 08:55:54,452 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:54,452 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:55:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:54,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:55:54,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:54,499 INFO L134 CoverageAnalysis]: Checked inductivity of 256 backedges. 0 proven. 156 refuted. 0 times theorem prover too weak. 100 trivial. 0 not checked. [2020-09-25 08:55:54,500 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [224745996] [2020-09-25 08:55:54,500 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:55:54,500 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 08:55:54,500 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1664392438] [2020-09-25 08:55:54,501 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 08:55:54,501 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:55:54,501 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 08:55:54,502 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=317, Unknown=0, NotChecked=0, Total=420 [2020-09-25 08:55:54,502 INFO L87 Difference]: Start difference. First operand 58 states and 59 transitions. Second operand 21 states. [2020-09-25 08:55:54,681 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:55:54,682 INFO L93 Difference]: Finished difference Result 69 states and 70 transitions. [2020-09-25 08:55:54,682 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2020-09-25 08:55:54,682 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 80 [2020-09-25 08:55:54,683 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:55:54,683 INFO L225 Difference]: With dead ends: 69 [2020-09-25 08:55:54,683 INFO L226 Difference]: Without dead ends: 63 [2020-09-25 08:55:54,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=223, Invalid=647, Unknown=0, NotChecked=0, Total=870 [2020-09-25 08:55:54,688 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 63 states. [2020-09-25 08:55:54,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 63 to 63. [2020-09-25 08:55:54,696 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-25 08:55:54,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 64 transitions. [2020-09-25 08:55:54,700 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 64 transitions. Word has length 80 [2020-09-25 08:55:54,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:55:54,701 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 64 transitions. [2020-09-25 08:55:54,701 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 08:55:54,701 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 64 transitions. [2020-09-25 08:55:54,702 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 89 [2020-09-25 08:55:54,702 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:55:54,702 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] [2020-09-25 08:55:54,702 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 08:55:54,702 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:55:54,703 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:55:54,704 INFO L82 PathProgramCache]: Analyzing trace with hash 777699815, now seen corresponding path program 9 times [2020-09-25 08:55:54,704 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:55:54,704 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1596378366] [2020-09-25 08:55:54,705 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:55:54,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:54,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:55,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:59,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:59,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 115 [2020-09-25 08:55:59,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:55:59,724 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 62 [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-09-25 08:55:59,725 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:59,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:55:59,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:59,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:55:59,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:55:59,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:55:59,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:55:59,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:55:59,758 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:55:59,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:00,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:00,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:56:00,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:00,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 433 [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 08:56:00,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:00,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:00,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:00,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:00,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:00,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 345 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 08:56:00,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:00,620 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:00,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:00,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:00,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:56:00,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:00,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 281 [2020-09-25 08:56:00,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:00,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:56:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:00,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:56:00,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:00,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:00,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:00,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,151 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 209 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:56:01,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:56:01,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:01,195 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,348 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:56:01,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:01,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:56:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:56:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:01,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,618 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:56:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:56:01,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:01,660 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,707 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:56:01,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-09-25 08:56:01,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,708 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:56:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:56:01,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:01,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:56:01,791 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,791 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 08:56:01,791 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,791 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:56:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:56:01,792 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:01,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:01,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:01,839 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:01,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:01,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:01,848 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:01,848 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 08:56:01,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:01,848 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:56:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:01,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:01,849 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:01,909 INFO L134 CoverageAnalysis]: Checked inductivity of 324 backedges. 0 proven. 198 refuted. 0 times theorem prover too weak. 126 trivial. 0 not checked. [2020-09-25 08:56:01,910 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1596378366] [2020-09-25 08:56:01,910 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:56:01,910 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-09-25 08:56:01,910 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1081705109] [2020-09-25 08:56:01,911 INFO L459 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-09-25 08:56:01,911 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:01,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-09-25 08:56:01,912 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=124, Invalid=382, Unknown=0, NotChecked=0, Total=506 [2020-09-25 08:56:01,912 INFO L87 Difference]: Start difference. First operand 63 states and 64 transitions. Second operand 23 states. [2020-09-25 08:56:02,106 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:02,106 INFO L93 Difference]: Finished difference Result 74 states and 75 transitions. [2020-09-25 08:56:02,107 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 33 states. [2020-09-25 08:56:02,107 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 88 [2020-09-25 08:56:02,107 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:02,109 INFO L225 Difference]: With dead ends: 74 [2020-09-25 08:56:02,109 INFO L226 Difference]: Without dead ends: 68 [2020-09-25 08:56:02,111 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 198 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=272, Invalid=784, Unknown=0, NotChecked=0, Total=1056 [2020-09-25 08:56:02,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-09-25 08:56:02,116 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-09-25 08:56:02,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-09-25 08:56:02,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-09-25 08:56:02,117 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 88 [2020-09-25 08:56:02,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:02,117 INFO L479 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-09-25 08:56:02,118 INFO L480 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-09-25 08:56:02,118 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-09-25 08:56:02,118 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 08:56:02,119 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:02,119 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] [2020-09-25 08:56:02,119 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 08:56:02,119 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:02,119 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:02,120 INFO L82 PathProgramCache]: Analyzing trace with hash 2145915377, now seen corresponding path program 10 times [2020-09-25 08:56:02,120 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:02,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [182326506] [2020-09-25 08:56:02,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:02,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:02,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:02,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:07,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:07,133 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-09-25 08:56:07,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-09-25 08:56:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-09-25 08:56:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:07,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:07,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:07,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:07,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:07,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:56:07,159 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:07,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:07,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:56:07,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:07,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:07,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:07,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 08:56:07,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:07,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 570 [2020-09-25 08:56:07,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:07,744 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:56:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:07,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 08:56:07,745 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:07,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:07,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:07,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:08,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:08,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:56:08,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:08,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 353 [2020-09-25 08:56:08,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:08,135 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:56:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:08,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 08:56:08,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:08,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:08,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:08,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:08,489 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:08,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:56:08,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:08,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 318 [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 08:56:08,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:08,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:08,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:08,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:08,812 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:08,812 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:56:08,812 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:08,812 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-09-25 08:56:08,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:08,813 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:56:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:08,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:56:08,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:08,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:08,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:08,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,060 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,061 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:56:09,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:09,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,102 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,247 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:56:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:56:09,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:09,286 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,386 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,386 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:56:09,386 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,386 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:56:09,386 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,387 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:56:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,387 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:56:09,387 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:09,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:56:09,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-09-25 08:56:09,513 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,513 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:56:09,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:56:09,514 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:09,562 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:56:09,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-09-25 08:56:09,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:56:09,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:56:09,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:09,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:56:09,690 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 08:56:09,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,690 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:56:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,691 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:56:09,691 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:09,745 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:09,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:09,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:09,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:09,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:09,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:09,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-09-25 08:56:09,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:09,759 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:56:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:09,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:09,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 400 backedges. 0 proven. 245 refuted. 0 times theorem prover too weak. 155 trivial. 0 not checked. [2020-09-25 08:56:09,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [182326506] [2020-09-25 08:56:09,813 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:56:09,813 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-09-25 08:56:09,813 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775390013] [2020-09-25 08:56:09,814 INFO L459 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-09-25 08:56:09,814 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:09,814 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-09-25 08:56:09,815 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=147, Invalid=453, Unknown=0, NotChecked=0, Total=600 [2020-09-25 08:56:09,815 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 25 states. [2020-09-25 08:56:10,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:10,072 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-09-25 08:56:10,072 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-09-25 08:56:10,072 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 96 [2020-09-25 08:56:10,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:10,074 INFO L225 Difference]: With dead ends: 79 [2020-09-25 08:56:10,075 INFO L226 Difference]: Without dead ends: 73 [2020-09-25 08:56:10,077 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 245 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=326, Invalid=934, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 08:56:10,077 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-09-25 08:56:10,082 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 73. [2020-09-25 08:56:10,083 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 73 states. [2020-09-25 08:56:10,083 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 74 transitions. [2020-09-25 08:56:10,083 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 74 transitions. Word has length 96 [2020-09-25 08:56:10,084 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:10,084 INFO L479 AbstractCegarLoop]: Abstraction has 73 states and 74 transitions. [2020-09-25 08:56:10,084 INFO L480 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-09-25 08:56:10,084 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 74 transitions. [2020-09-25 08:56:10,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 105 [2020-09-25 08:56:10,085 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:10,085 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] [2020-09-25 08:56:10,086 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 08:56:10,086 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:10,086 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:10,086 INFO L82 PathProgramCache]: Analyzing trace with hash 1180214055, now seen corresponding path program 11 times [2020-09-25 08:56:10,086 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:10,087 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [871345029] [2020-09-25 08:56:10,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:10,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:10,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:10,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:15,109 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:15,109 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 135 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 72 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 08:56:15,110 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:15,134 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:15,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:15,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:15,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:15,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:15,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:15,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:56:15,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:15,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:15,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:15,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-09-25 08:56:15,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:15,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 643 [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-09-25 08:56:15,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:15,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:15,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:15,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:16,384 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 547 [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:16,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 08:56:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:16,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-09-25 08:56:16,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:16,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:16,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:16,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:16,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:16,853 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-09-25 08:56:16,853 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 424 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-09-25 08:56:16,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:16,894 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:16,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:16,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:17,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:17,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 91 [2020-09-25 08:56:17,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 08:56:17,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:17,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:17,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:17,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:17,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:17,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 278 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:17,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-09-25 08:56:17,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:17,618 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:17,625 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:17,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:17,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:17,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 08:56:17,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:17,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 08:56:17,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:17,828 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-09-25 08:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:17,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-09-25 08:56:17,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 08:56:17,868 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:17,874 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:17,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,066 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 08:56:18,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-09-25 08:56:18,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,068 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-09-25 08:56:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-09-25 08:56:18,070 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:18,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:18,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:18,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 51 [2020-09-25 08:56:18,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 08:56:18,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,289 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 08:56:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 08:56:18,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:18,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:18,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:18,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-09-25 08:56:18,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-09-25 08:56:18,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-09-25 08:56:18,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 08:56:18,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:18,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:18,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:18,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,567 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-09-25 08:56:18,568 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,568 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-09-25 08:56:18,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,569 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 08:56:18,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 08:56:18,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:18,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:18,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:18,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-09-25 08:56:18,668 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,668 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-09-25 08:56:18,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,669 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 08:56:18,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-09-25 08:56:18,671 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:18,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-09-25 08:56:18,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:18,750 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:18,761 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:18,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 11 [2020-09-25 08:56:18,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:18,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-09-25 08:56:18,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:18,763 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-09-25 08:56:18,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:18,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-09-25 08:56:18,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 08:56:18,873 INFO L134 CoverageAnalysis]: Checked inductivity of 484 backedges. 0 proven. 297 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-09-25 08:56:18,873 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [871345029] [2020-09-25 08:56:18,874 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 08:56:18,874 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 08:56:18,874 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [606271102] [2020-09-25 08:56:18,875 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 08:56:18,875 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 08:56:18,877 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 08:56:18,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=172, Invalid=530, Unknown=0, NotChecked=0, Total=702 [2020-09-25 08:56:18,879 INFO L87 Difference]: Start difference. First operand 73 states and 74 transitions. Second operand 27 states. [2020-09-25 08:56:19,125 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 08:56:19,126 INFO L93 Difference]: Finished difference Result 84 states and 85 transitions. [2020-09-25 08:56:19,126 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 39 states. [2020-09-25 08:56:19,126 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 104 [2020-09-25 08:56:19,127 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 08:56:19,127 INFO L225 Difference]: With dead ends: 84 [2020-09-25 08:56:19,128 INFO L226 Difference]: Without dead ends: 78 [2020-09-25 08:56:19,129 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 297 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=385, Invalid=1097, Unknown=0, NotChecked=0, Total=1482 [2020-09-25 08:56:19,129 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2020-09-25 08:56:19,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 78. [2020-09-25 08:56:19,139 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-25 08:56:19,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 79 transitions. [2020-09-25 08:56:19,142 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 79 transitions. Word has length 104 [2020-09-25 08:56:19,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 08:56:19,143 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 79 transitions. [2020-09-25 08:56:19,143 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 08:56:19,143 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 79 transitions. [2020-09-25 08:56:19,147 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 113 [2020-09-25 08:56:19,148 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 08:56:19,148 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] [2020-09-25 08:56:19,148 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 08:56:19,148 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 08:56:19,149 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 08:56:19,149 INFO L82 PathProgramCache]: Analyzing trace with hash -1287598415, now seen corresponding path program 12 times [2020-09-25 08:56:19,150 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 08:56:19,150 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [858323306] [2020-09-25 08:56:19,150 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 08:56:19,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:19,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:19,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:24,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:24,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-09-25 08:56:24,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 08:56:24,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-09-25 08:56:24,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:24,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:24,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 08:56:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 77 [2020-09-25 08:56:24,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-09-25 08:56:24,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:24,209 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 08:56:24,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:24,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 08:56:24,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 08:56:24,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 08:56:24,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 08:56:24,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 08:56:24,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: WIDESTAMONGSMALL [2020-09-25 08:56:24,213 FATAL L256 erpolLogProxyWrapper]: Tolerance: 1.0 [2020-09-25 08:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 08:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 08:56:24,213 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 08:56:24,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 08:56:24,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-09-25 08:56:24,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 08:56:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking...