/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SingleStatement --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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/MultCommutative-2.c -------------------------------------------------------------------------------- This is Ultimate 0.1.25-c90d42b [2020-09-25 12:13:58,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-25 12:13:58,919 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-25 12:13:58,945 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-25 12:13:58,945 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-25 12:13:58,947 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-25 12:13:58,948 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-25 12:13:58,950 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-25 12:13:58,951 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-25 12:13:58,952 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-25 12:13:58,953 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-25 12:13:58,954 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-25 12:13:58,954 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-25 12:13:58,955 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-25 12:13:58,956 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-25 12:13:58,957 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-25 12:13:58,958 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-25 12:13:58,959 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-25 12:13:58,961 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-25 12:13:58,963 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-25 12:13:58,964 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-25 12:13:58,965 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-25 12:13:58,967 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-25 12:13:58,967 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-25 12:13:58,970 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-25 12:13:58,970 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-25 12:13:58,971 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-25 12:13:58,971 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-25 12:13:58,972 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-25 12:13:58,973 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-25 12:13:58,973 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-25 12:13:58,974 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-25 12:13:58,977 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-25 12:13:58,978 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-25 12:13:58,979 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-25 12:13:58,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-25 12:13:58,982 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-25 12:13:58,982 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-25 12:13:58,982 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-25 12:13:58,983 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-25 12:13:58,984 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-25 12:13:58,985 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 12:13:59,042 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-25 12:13:59,043 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-25 12:13:59,047 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-09-25 12:13:59,047 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-09-25 12:13:59,047 INFO L138 SettingsManager]: * Use SBE=true [2020-09-25 12:13:59,048 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-25 12:13:59,048 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-25 12:13:59,048 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-25 12:13:59,048 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-25 12:13:59,048 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-25 12:13:59,049 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-25 12:13:59,049 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-25 12:13:59,049 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-25 12:13:59,049 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-25 12:13:59,049 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-25 12:13:59,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-25 12:13:59,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-25 12:13:59,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-25 12:13:59,051 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-09-25 12:13:59,051 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-25 12:13:59,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-25 12:13:59,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-25 12:13:59,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-25 12:13:59,052 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-09-25 12:13:59,053 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-09-25 12:13:59,053 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-09-25 12:13:59,053 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-09-25 12:13:59,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-25 12:13:59,053 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-09-25 12:13:59,054 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SingleStatement Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true; [2020-09-25 12:13:59,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-25 12:13:59,544 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-25 12:13:59,549 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-25 12:13:59,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-25 12:13:59,551 INFO L275 PluginConnector]: CDTParser initialized [2020-09-25 12:13:59,554 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 12:13:59,647 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd6ab502/bd2150278a3f4340bf3997555127ba47/FLAG2f3a00206 [2020-09-25 12:14:00,207 INFO L306 CDTParser]: Found 1 translation units. [2020-09-25 12:14:00,207 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/MultCommutative-2.c [2020-09-25 12:14:00,216 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd6ab502/bd2150278a3f4340bf3997555127ba47/FLAG2f3a00206 [2020-09-25 12:14:00,546 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/bdd6ab502/bd2150278a3f4340bf3997555127ba47 [2020-09-25 12:14:00,559 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-25 12:14:00,565 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-25 12:14:00,566 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:00,566 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-25 12:14:00,571 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-25 12:14:00,572 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:00,577 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@552436f5 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00, skipping insertion in model container [2020-09-25 12:14:00,577 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:00,587 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-25 12:14:00,612 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-25 12:14:00,918 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:00,928 INFO L203 MainTranslator]: Completed pre-run [2020-09-25 12:14:00,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-25 12:14:00,963 INFO L208 MainTranslator]: Completed translation [2020-09-25 12:14:00,964 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00 WrapperNode [2020-09-25 12:14:00,964 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-25 12:14:00,965 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-25 12:14:00,965 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-25 12:14:00,965 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-25 12:14:00,979 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:00,980 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,056 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,057 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,062 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,065 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,070 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (1/1) ... [2020-09-25 12:14:01,072 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-25 12:14:01,073 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-25 12:14:01,073 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-25 12:14:01,073 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-25 12:14:01,074 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (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 12:14:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-25 12:14:01,160 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-25 12:14:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure mult [2020-09-25 12:14:01,161 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-25 12:14:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-25 12:14:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-25 12:14:01,161 INFO L130 BoogieDeclarations]: Found specification of procedure mult [2020-09-25 12:14:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-25 12:14:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-25 12:14:01,162 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-25 12:14:01,456 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-25 12:14:01,457 INFO L295 CfgBuilder]: Removed 0 assume(true) statements. [2020-09-25 12:14:01,465 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:01 BoogieIcfgContainer [2020-09-25 12:14:01,475 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-25 12:14:01,477 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-25 12:14:01,485 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-25 12:14:01,489 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-25 12:14:01,489 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 25.09 12:14:00" (1/3) ... [2020-09-25 12:14:01,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a652219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:01, skipping insertion in model container [2020-09-25 12:14:01,490 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 25.09 12:14:00" (2/3) ... [2020-09-25 12:14:01,490 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@a652219 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 25.09 12:14:01, skipping insertion in model container [2020-09-25 12:14:01,491 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 25.09 12:14:01" (3/3) ... [2020-09-25 12:14:01,493 INFO L109 eAbstractionObserver]: Analyzing ICFG MultCommutative-2.c [2020-09-25 12:14:01,505 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-25 12:14:01,516 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-25 12:14:01,538 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-25 12:14:01,569 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-25 12:14:01,569 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-25 12:14:01,570 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-25 12:14:01,570 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-25 12:14:01,570 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-25 12:14:01,570 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-25 12:14:01,570 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-25 12:14:01,571 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-25 12:14:01,593 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-09-25 12:14:01,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-25 12:14:01,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:01,603 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:01,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:01,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:01,610 INFO L82 PathProgramCache]: Analyzing trace with hash 2060884630, now seen corresponding path program 1 times [2020-09-25 12:14:01,619 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:01,620 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [29795732] [2020-09-25 12:14:01,620 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:01,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:01,812 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:01,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-09-25 12:14:02,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:02,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1046 [2020-09-25 12:14:02,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,829 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:02,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-09-25 12:14:02,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-09-25 12:14:02,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:02,925 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,929 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:02,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:02,932 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,932 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:02,933 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:02,933 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:02,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:02,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:02,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:02,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:02,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:02,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:02,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-09-25 12:14:02,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:02,985 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:02,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:02,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:02,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:03,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-09-25 12:14:03,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:03,051 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,051 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:14:03,051 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,052 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:03,052 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:03,053 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,074 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-09-25 12:14:03,076 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [29795732] [2020-09-25 12:14:03,078 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:03,079 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:14:03,080 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [416126743] [2020-09-25 12:14:03,088 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:03,088 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:03,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:03,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:03,111 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 5 states. [2020-09-25 12:14:03,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:03,255 INFO L93 Difference]: Finished difference Result 64 states and 76 transitions. [2020-09-25 12:14:03,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:03,257 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 36 [2020-09-25 12:14:03,258 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:03,272 INFO L225 Difference]: With dead ends: 64 [2020-09-25 12:14:03,272 INFO L226 Difference]: Without dead ends: 40 [2020-09-25 12:14:03,277 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 9 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 12:14:03,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-09-25 12:14:03,328 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 40. [2020-09-25 12:14:03,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 12:14:03,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 46 transitions. [2020-09-25 12:14:03,334 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 46 transitions. Word has length 36 [2020-09-25 12:14:03,334 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:03,335 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 46 transitions. [2020-09-25 12:14:03,335 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:03,335 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 46 transitions. [2020-09-25 12:14:03,338 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 47 [2020-09-25 12:14:03,339 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:03,339 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:03,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-25 12:14:03,339 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:03,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:03,340 INFO L82 PathProgramCache]: Analyzing trace with hash 1309951713, now seen corresponding path program 1 times [2020-09-25 12:14:03,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:03,341 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696491574] [2020-09-25 12:14:03,341 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:03,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-09-25 12:14:03,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-09-25 12:14:03,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,457 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:14:03,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-09-25 12:14:03,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,477 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:03,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:03,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-09-25 12:14:03,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,481 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:03,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,484 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:03,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,495 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:03,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-09-25 12:14:03,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,497 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:03,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:03,503 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:03,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:14:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,516 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:03,518 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:03,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:03,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:03,537 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:14:03,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:03,537 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:03,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:03,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:03,558 INFO L134 CoverageAnalysis]: Checked inductivity of 19 backedges. 9 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-09-25 12:14:03,559 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696491574] [2020-09-25 12:14:03,559 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-25 12:14:03,560 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-25 12:14:03,560 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1345819840] [2020-09-25 12:14:03,562 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:03,563 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:03,563 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:03,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:03,564 INFO L87 Difference]: Start difference. First operand 40 states and 46 transitions. Second operand 5 states. [2020-09-25 12:14:03,642 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:03,642 INFO L93 Difference]: Finished difference Result 51 states and 58 transitions. [2020-09-25 12:14:03,642 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:03,643 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 46 [2020-09-25 12:14:03,643 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:03,645 INFO L225 Difference]: With dead ends: 51 [2020-09-25 12:14:03,645 INFO L226 Difference]: Without dead ends: 45 [2020-09-25 12:14:03,646 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 11 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 12:14:03,647 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-09-25 12:14:03,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-09-25 12:14:03,655 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-09-25 12:14:03,657 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 52 transitions. [2020-09-25 12:14:03,657 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 52 transitions. Word has length 46 [2020-09-25 12:14:03,657 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:03,658 INFO L479 AbstractCegarLoop]: Abstraction has 45 states and 52 transitions. [2020-09-25 12:14:03,658 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:03,658 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 52 transitions. [2020-09-25 12:14:03,660 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:14:03,661 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:03,661 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:03,661 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-25 12:14:03,662 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:03,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:03,662 INFO L82 PathProgramCache]: Analyzing trace with hash -793708719, now seen corresponding path program 1 times [2020-09-25 12:14:03,662 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:03,663 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1394244751] [2020-09-25 12:14:03,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:03,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:03,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,745 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:03,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:04,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:05,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:14:05,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-09-25 12:14:05,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1915 [2020-09-25 12:14:05,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:05,596 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 45 [2020-09-25 12:14:05,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-09-25 12:14:05,598 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:05,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:05,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:05,622 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:05,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:05,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:05,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:05,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:05,624 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:05,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:05,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:05,627 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:05,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:05,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:05,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:05,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:05,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-09-25 12:14:05,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:05,640 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:05,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:05,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:05,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:05,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:05,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:05,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:05,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:05,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:05,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-09-25 12:14:05,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:05,667 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:05,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:05,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:05,671 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:05,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:05,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,728 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:05,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:14:06,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-09-25 12:14:06,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 599 [2020-09-25 12:14:06,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,278 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-09-25 12:14:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:14:06,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:06,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:06,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:06,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-09-25 12:14:06,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,339 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:06,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:06,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:06,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:06,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:06,351 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:06,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:06,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:06,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:06,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:06,353 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:06,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:06,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:06,365 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 10 proven. 2 refuted. 0 times theorem prover too weak. 49 trivial. 0 not checked. [2020-09-25 12:14:06,366 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1394244751] [2020-09-25 12:14:06,366 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:06,367 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-09-25 12:14:06,367 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [491434509] [2020-09-25 12:14:06,368 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-25 12:14:06,368 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:06,368 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-25 12:14:06,369 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-25 12:14:06,369 INFO L87 Difference]: Start difference. First operand 45 states and 52 transitions. Second operand 5 states. [2020-09-25 12:14:06,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:06,470 INFO L93 Difference]: Finished difference Result 53 states and 60 transitions. [2020-09-25 12:14:06,471 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-25 12:14:06,471 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 65 [2020-09-25 12:14:06,472 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:06,473 INFO L225 Difference]: With dead ends: 53 [2020-09-25 12:14:06,473 INFO L226 Difference]: Without dead ends: 47 [2020-09-25 12:14:06,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 15 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 12:14:06,475 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-09-25 12:14:06,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 40. [2020-09-25 12:14:06,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-09-25 12:14:06,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 45 transitions. [2020-09-25 12:14:06,482 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 45 transitions. Word has length 65 [2020-09-25 12:14:06,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:06,483 INFO L479 AbstractCegarLoop]: Abstraction has 40 states and 45 transitions. [2020-09-25 12:14:06,483 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-25 12:14:06,483 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 45 transitions. [2020-09-25 12:14:06,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-25 12:14:06,485 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:06,486 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:06,486 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-25 12:14:06,486 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:06,486 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:06,487 INFO L82 PathProgramCache]: Analyzing trace with hash 942191350, now seen corresponding path program 2 times [2020-09-25 12:14:06,487 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:06,487 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136044015] [2020-09-25 12:14:06,487 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:06,501 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:06,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-09-25 12:14:07,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 617 [2020-09-25 12:14:07,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,121 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-09-25 12:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:07,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-09-25 12:14:07,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:07,188 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:07,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:07,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,191 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:07,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,193 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:07,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,248 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:07,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:14:07,249 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,249 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:07,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,324 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,360 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,361 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:07,361 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,361 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:14:07,361 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,362 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,362 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:07,363 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,418 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:07,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,523 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:07,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-09-25 12:14:07,524 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,525 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:07,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,683 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:07,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:07,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:07,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:07,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:07,731 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:07,731 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-09-25 12:14:07,731 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:07,731 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:07,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:07,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:07,801 INFO L134 CoverageAnalysis]: Checked inductivity of 41 backedges. 1 proven. 29 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-09-25 12:14:07,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136044015] [2020-09-25 12:14:07,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:07,803 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-09-25 12:14:07,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2061838250] [2020-09-25 12:14:07,804 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-09-25 12:14:07,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:07,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-09-25 12:14:07,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=231, Unknown=0, NotChecked=0, Total=272 [2020-09-25 12:14:07,805 INFO L87 Difference]: Start difference. First operand 40 states and 45 transitions. Second operand 17 states. [2020-09-25 12:14:08,364 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:08,364 INFO L93 Difference]: Finished difference Result 68 states and 78 transitions. [2020-09-25 12:14:08,364 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-09-25 12:14:08,365 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-09-25 12:14:08,365 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:08,367 INFO L225 Difference]: With dead ends: 68 [2020-09-25 12:14:08,367 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:14:08,368 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 84 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=110, Invalid=540, Unknown=0, NotChecked=0, Total=650 [2020-09-25 12:14:08,369 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:14:08,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 51. [2020-09-25 12:14:08,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-09-25 12:14:08,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 61 transitions. [2020-09-25 12:14:08,380 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 61 transitions. Word has length 56 [2020-09-25 12:14:08,380 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:08,381 INFO L479 AbstractCegarLoop]: Abstraction has 51 states and 61 transitions. [2020-09-25 12:14:08,381 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-09-25 12:14:08,381 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 61 transitions. [2020-09-25 12:14:08,382 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:14:08,383 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:08,383 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:08,383 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-25 12:14:08,383 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:08,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:08,384 INFO L82 PathProgramCache]: Analyzing trace with hash -156864787, now seen corresponding path program 2 times [2020-09-25 12:14:08,384 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:08,384 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1821052499] [2020-09-25 12:14:08,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:08,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:08,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:08,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:09,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:10,892 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,049 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,050 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:14:11,050 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:14:11,050 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2648 [2020-09-25 12:14:11,050 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,051 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-09-25 12:14:11,051 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-09-25 12:14:11,052 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:11,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:11,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:11,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,076 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,077 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,101 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:11,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,102 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:14:11,102 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,102 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,102 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,103 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:11,103 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:11,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,110 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,115 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:11,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:14:11,116 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,116 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:11,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,117 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:11,117 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:11,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:14:11,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:11,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 316 [2020-09-25 12:14:11,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,443 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-09-25 12:14:11,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-09-25 12:14:11,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,492 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:11,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:11,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:11,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 12:14:11,604 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:11,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,620 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:11,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:11,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:11,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:11,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:11,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-09-25 12:14:11,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:11,629 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:11,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:11,630 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:11,643 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 22 proven. 4 refuted. 0 times theorem prover too weak. 35 trivial. 0 not checked. [2020-09-25 12:14:11,643 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1821052499] [2020-09-25 12:14:11,644 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:11,644 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:11,644 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [266768440] [2020-09-25 12:14:11,663 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:11,663 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:11,663 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:11,663 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:11,664 INFO L87 Difference]: Start difference. First operand 51 states and 61 transitions. Second operand 7 states. [2020-09-25 12:14:11,767 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:11,767 INFO L93 Difference]: Finished difference Result 90 states and 118 transitions. [2020-09-25 12:14:11,769 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:14:11,769 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-09-25 12:14:11,769 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:11,770 INFO L225 Difference]: With dead ends: 90 [2020-09-25 12:14:11,770 INFO L226 Difference]: Without dead ends: 56 [2020-09-25 12:14:11,774 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-09-25 12:14:11,775 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-09-25 12:14:11,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-09-25 12:14:11,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-09-25 12:14:11,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 66 transitions. [2020-09-25 12:14:11,791 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 66 transitions. Word has length 65 [2020-09-25 12:14:11,794 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:11,794 INFO L479 AbstractCegarLoop]: Abstraction has 56 states and 66 transitions. [2020-09-25 12:14:11,795 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:11,795 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 66 transitions. [2020-09-25 12:14:11,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 12:14:11,796 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:11,796 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:11,798 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-25 12:14:11,799 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:11,799 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:11,799 INFO L82 PathProgramCache]: Analyzing trace with hash 387973505, now seen corresponding path program 3 times [2020-09-25 12:14:11,799 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:11,800 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [181764560] [2020-09-25 12:14:11,800 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:11,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:11,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,633 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,633 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:14:12,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 817 [2020-09-25 12:14:12,634 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,634 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 12:14:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:12,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:14:12,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:12,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,702 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,702 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:12,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:12,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,703 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:12,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:12,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,821 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,822 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:12,822 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,822 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-09-25 12:14:12,822 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,823 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:12,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:12,921 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:12,924 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:12,927 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:12,944 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:12,944 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:12,944 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:12,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:14:12,945 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:12,945 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:12,945 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:12,946 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,021 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:13,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:13,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:13,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 261 [2020-09-25 12:14:13,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,293 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:13,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,392 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:13,396 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:13,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:13,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 12:14:13,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:13,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:13,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:13,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:13,604 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:13,604 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:13,604 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:13,604 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:13,605 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:13,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:13,623 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 12 proven. 39 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 12:14:13,624 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [181764560] [2020-09-25 12:14:13,626 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:13,626 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:14:13,626 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [619549032] [2020-09-25 12:14:13,628 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:14:13,629 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:13,629 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:14:13,629 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=267, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:14:13,630 INFO L87 Difference]: Start difference. First operand 56 states and 66 transitions. Second operand 18 states. [2020-09-25 12:14:14,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:14,260 INFO L93 Difference]: Finished difference Result 78 states and 90 transitions. [2020-09-25 12:14:14,260 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:14:14,261 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 12:14:14,261 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:14,262 INFO L225 Difference]: With dead ends: 78 [2020-09-25 12:14:14,263 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:14:14,264 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 14 SyntacticMatches, 3 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 99 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=126, Invalid=744, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:14:14,265 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:14:14,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 61. [2020-09-25 12:14:14,274 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-25 12:14:14,275 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 74 transitions. [2020-09-25 12:14:14,275 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 74 transitions. Word has length 66 [2020-09-25 12:14:14,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:14,276 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 74 transitions. [2020-09-25 12:14:14,276 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 12:14:14,276 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 74 transitions. [2020-09-25 12:14:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:14:14,278 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:14,278 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:14,278 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-25 12:14:14,279 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:14,279 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:14,279 INFO L82 PathProgramCache]: Analyzing trace with hash 681092950, now seen corresponding path program 4 times [2020-09-25 12:14:14,279 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:14,280 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2143649717] [2020-09-25 12:14:14,280 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:14,296 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:14,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 12:14:15,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:15,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1058 [2020-09-25 12:14:15,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,357 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 12:14:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:15,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:14:15,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:15,424 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:15,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,426 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,426 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:15,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:15,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:15,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,427 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:15,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:15,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:15,431 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:15,435 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,439 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:15,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:15,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-09-25 12:14:15,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,508 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-09-25 12:14:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:15,509 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:15,509 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:15,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:15,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:15,625 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:15,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:15,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:15,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:14:15,626 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:15,626 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:15,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:15,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:15,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 33 [2020-09-25 12:14:15,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:15,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,084 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:16,084 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,084 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 12:14:16,084 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,084 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:14:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,085 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:16,085 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:16,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,257 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:16,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,451 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-09-25 12:14:16,451 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:16,452 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,453 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:16,453 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-09-25 12:14:16,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:16,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:16,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-09-25 12:14:16,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,625 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:16,626 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:16,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:16,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:16,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:16,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:16,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:16,777 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-09-25 12:14:16,777 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:16,778 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:16,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:16,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:16,836 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 13 proven. 72 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2020-09-25 12:14:16,836 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2143649717] [2020-09-25 12:14:16,836 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:16,837 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-09-25 12:14:16,838 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1517101024] [2020-09-25 12:14:16,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-09-25 12:14:16,839 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:16,839 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-09-25 12:14:16,840 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=368, Unknown=0, NotChecked=0, Total=420 [2020-09-25 12:14:16,840 INFO L87 Difference]: Start difference. First operand 61 states and 74 transitions. Second operand 21 states. [2020-09-25 12:14:17,606 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:17,606 INFO L93 Difference]: Finished difference Result 72 states and 84 transitions. [2020-09-25 12:14:17,607 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:14:17,607 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 76 [2020-09-25 12:14:17,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:17,609 INFO L225 Difference]: With dead ends: 72 [2020-09-25 12:14:17,609 INFO L226 Difference]: Without dead ends: 62 [2020-09-25 12:14:17,613 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 203 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=194, Invalid=1066, Unknown=0, NotChecked=0, Total=1260 [2020-09-25 12:14:17,614 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-09-25 12:14:17,620 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 52. [2020-09-25 12:14:17,620 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 52 states. [2020-09-25 12:14:17,621 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 60 transitions. [2020-09-25 12:14:17,621 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 60 transitions. Word has length 76 [2020-09-25 12:14:17,621 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:17,622 INFO L479 AbstractCegarLoop]: Abstraction has 52 states and 60 transitions. [2020-09-25 12:14:17,622 INFO L480 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-09-25 12:14:17,622 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 60 transitions. [2020-09-25 12:14:17,623 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-09-25 12:14:17,623 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:17,623 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:17,623 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-25 12:14:17,624 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:17,624 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:17,624 INFO L82 PathProgramCache]: Analyzing trace with hash -1499627157, now seen corresponding path program 3 times [2020-09-25 12:14:17,624 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:17,624 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [868914412] [2020-09-25 12:14:17,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:17,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:17,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:17,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:18,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:18,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:19,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 82 [2020-09-25 12:14:19,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-09-25 12:14:19,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2243 [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-09-25 12:14:19,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:19,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:19,893 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:19,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:19,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:19,896 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:19,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:19,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:19,898 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:19,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:19,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:19,914 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,293 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 36 [2020-09-25 12:14:20,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-09-25 12:14:20,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 391 [2020-09-25 12:14:20,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,295 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-09-25 12:14:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:20,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-09-25 12:14:20,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:20,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:20,317 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-09-25 12:14:20,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-09-25 12:14:20,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-09-25 12:14:20,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,398 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-09-25 12:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:20,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:20,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:20,416 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-09-25 12:14:20,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,423 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:20,423 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:20,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:20,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,424 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:20,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-09-25 12:14:20,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:20,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 42 [2020-09-25 12:14:20,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,450 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:20,450 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:20,450 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-09-25 12:14:20,450 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,451 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-09-25 12:14:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:20,451 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-09-25 12:14:20,451 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:20,455 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:20,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:20,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:20,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:20,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:20,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-09-25 12:14:20,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:20,462 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:20,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:20,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:20,469 INFO L134 CoverageAnalysis]: Checked inductivity of 61 backedges. 4 proven. 24 refuted. 0 times theorem prover too weak. 33 trivial. 0 not checked. [2020-09-25 12:14:20,470 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [868914412] [2020-09-25 12:14:20,470 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:20,470 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-09-25 12:14:20,471 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1339270790] [2020-09-25 12:14:20,472 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-25 12:14:20,473 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:20,473 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-25 12:14:20,474 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2020-09-25 12:14:20,474 INFO L87 Difference]: Start difference. First operand 52 states and 60 transitions. Second operand 7 states. [2020-09-25 12:14:20,561 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:20,562 INFO L93 Difference]: Finished difference Result 104 states and 124 transitions. [2020-09-25 12:14:20,562 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-25 12:14:20,562 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 65 [2020-09-25 12:14:20,563 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:20,564 INFO L225 Difference]: With dead ends: 104 [2020-09-25 12:14:20,564 INFO L226 Difference]: Without dead ends: 57 [2020-09-25 12:14:20,565 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=47, Unknown=0, NotChecked=0, Total=72 [2020-09-25 12:14:20,565 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-09-25 12:14:20,580 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-09-25 12:14:20,580 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-09-25 12:14:20,581 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 64 transitions. [2020-09-25 12:14:20,585 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 64 transitions. Word has length 65 [2020-09-25 12:14:20,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:20,586 INFO L479 AbstractCegarLoop]: Abstraction has 57 states and 64 transitions. [2020-09-25 12:14:20,586 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-25 12:14:20,586 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 64 transitions. [2020-09-25 12:14:20,588 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 77 [2020-09-25 12:14:20,588 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:20,588 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 4, 4, 4, 4, 4, 4, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:20,589 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-25 12:14:20,589 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:20,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:20,589 INFO L82 PathProgramCache]: Analyzing trace with hash -972388074, now seen corresponding path program 5 times [2020-09-25 12:14:20,589 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:20,593 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1405100869] [2020-09-25 12:14:20,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:20,610 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:20,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,713 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,714 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-09-25 12:14:21,714 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,714 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1096 [2020-09-25 12:14:21,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,715 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-09-25 12:14:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:21,715 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 74 [2020-09-25 12:14:21,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:21,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:21,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:21,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:21,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,758 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:21,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:21,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:21,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:21,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:21,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:21,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:21,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:21,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-09-25 12:14:21,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:21,928 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:21,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:21,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:22,007 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:22,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,060 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:22,061 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:22,061 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:22,061 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-09-25 12:14:22,061 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:22,062 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:22,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:22,063 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,132 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:22,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:22,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:22,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:22,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:22,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:14:22,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:22,171 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:22,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:22,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:22,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 12:14:22,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:22,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:22,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:22,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:22,468 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 225 [2020-09-25 12:14:22,468 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:22,468 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:22,469 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:22,469 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:22,498 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:22,503 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,588 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:22,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:22,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:22,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-09-25 12:14:22,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:22,590 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:22,590 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:22,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,637 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:22,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:22,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:22,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:22,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:22,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:22,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-09-25 12:14:22,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:22,665 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:22,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:22,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:22,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:22,694 INFO L134 CoverageAnalysis]: Checked inductivity of 115 backedges. 8 proven. 54 refuted. 0 times theorem prover too weak. 53 trivial. 0 not checked. [2020-09-25 12:14:22,698 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1405100869] [2020-09-25 12:14:22,699 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:22,699 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-09-25 12:14:22,700 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [932105023] [2020-09-25 12:14:22,700 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-09-25 12:14:22,700 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:22,701 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-09-25 12:14:22,701 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2020-09-25 12:14:22,701 INFO L87 Difference]: Start difference. First operand 57 states and 64 transitions. Second operand 16 states. [2020-09-25 12:14:23,348 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:23,348 INFO L93 Difference]: Finished difference Result 78 states and 89 transitions. [2020-09-25 12:14:23,349 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:14:23,349 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 76 [2020-09-25 12:14:23,349 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:23,350 INFO L225 Difference]: With dead ends: 78 [2020-09-25 12:14:23,351 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:14:23,352 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 21 SyntacticMatches, 3 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=113, Invalid=643, Unknown=0, NotChecked=0, Total=756 [2020-09-25 12:14:23,354 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:14:23,365 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-25 12:14:23,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:14:23,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 78 transitions. [2020-09-25 12:14:23,368 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 78 transitions. Word has length 76 [2020-09-25 12:14:23,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:23,368 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 78 transitions. [2020-09-25 12:14:23,368 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-09-25 12:14:23,369 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 78 transitions. [2020-09-25 12:14:23,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-09-25 12:14:23,370 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:23,370 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:23,371 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-25 12:14:23,371 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:23,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:23,371 INFO L82 PathProgramCache]: Analyzing trace with hash -516505397, now seen corresponding path program 6 times [2020-09-25 12:14:23,372 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:23,372 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [176554783] [2020-09-25 12:14:23,372 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:23,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:23,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 83 [2020-09-25 12:14:24,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,068 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 680 [2020-09-25 12:14:24,068 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,069 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-09-25 12:14:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:24,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-09-25 12:14:24,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:24,131 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,135 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,135 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:24,135 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,136 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-09-25 12:14:24,136 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,136 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,136 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,137 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:24,137 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,138 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:24,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,340 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,341 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:24,341 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,341 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 194 [2020-09-25 12:14:24,341 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,341 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:24,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:24,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:24,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 54 [2020-09-25 12:14:24,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:24,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:24,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:24,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,561 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:24,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-09-25 12:14:24,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,563 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,564 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:24,564 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,628 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 12:14:24,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,666 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:24,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-09-25 12:14:24,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,668 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:24,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,758 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:24,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:24,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:24,775 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:24,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:24,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:24,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-09-25 12:14:24,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:24,777 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:24,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:24,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:24,880 INFO L134 CoverageAnalysis]: Checked inductivity of 73 backedges. 1 proven. 50 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-09-25 12:14:24,881 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [176554783] [2020-09-25 12:14:24,881 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:24,882 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-09-25 12:14:24,882 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [113880871] [2020-09-25 12:14:24,882 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-09-25 12:14:24,883 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:24,883 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-09-25 12:14:24,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=266, Unknown=0, NotChecked=0, Total=306 [2020-09-25 12:14:24,884 INFO L87 Difference]: Start difference. First operand 66 states and 78 transitions. Second operand 18 states. [2020-09-25 12:14:25,518 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:25,519 INFO L93 Difference]: Finished difference Result 78 states and 88 transitions. [2020-09-25 12:14:25,519 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-09-25 12:14:25,519 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 66 [2020-09-25 12:14:25,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:25,520 INFO L225 Difference]: With dead ends: 78 [2020-09-25 12:14:25,520 INFO L226 Difference]: Without dead ends: 72 [2020-09-25 12:14:25,522 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 12 SyntacticMatches, 5 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 137 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=127, Invalid=743, Unknown=0, NotChecked=0, Total=870 [2020-09-25 12:14:25,522 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 72 states. [2020-09-25 12:14:25,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 72 to 66. [2020-09-25 12:14:25,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-09-25 12:14:25,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 77 transitions. [2020-09-25 12:14:25,538 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 77 transitions. Word has length 66 [2020-09-25 12:14:25,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:25,538 INFO L479 AbstractCegarLoop]: Abstraction has 66 states and 77 transitions. [2020-09-25 12:14:25,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-09-25 12:14:25,538 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 77 transitions. [2020-09-25 12:14:25,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 12:14:25,539 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:25,540 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:25,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-25 12:14:25,542 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:25,542 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:25,542 INFO L82 PathProgramCache]: Analyzing trace with hash -27101013, now seen corresponding path program 7 times [2020-09-25 12:14:25,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:25,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1766718756] [2020-09-25 12:14:25,543 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:25,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:25,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:26,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 12:14:26,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:26,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:14:26,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:26,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:26,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:26,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:26,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:26,824 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:26,824 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:26,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:26,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:26,825 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:26,826 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:26,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:26,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:26,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:26,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:27,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 200 [2020-09-25 12:14:27,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,044 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:27,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:27,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:27,115 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,191 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,192 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:27,192 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,192 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-09-25 12:14:27,192 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,192 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:27,193 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:27,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:27,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-09-25 12:14:27,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,294 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:27,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,294 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:27,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:27,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 12:14:27,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:27,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,759 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 386 [2020-09-25 12:14:27,759 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,760 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:14:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:27,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:27,836 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:27,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:27,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:27,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:27,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:27,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:27,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 117 [2020-09-25 12:14:27,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:27,964 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:27,964 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:27,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:27,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-09-25 12:14:28,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:28,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:28,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:28,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:28,172 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-09-25 12:14:28,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,173 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:28,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,174 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:28,174 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:28,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:28,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:28,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:28,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:28,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:28,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:28,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-09-25 12:14:28,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:28,298 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:28,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:28,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:28,348 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 20 proven. 92 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 12:14:28,349 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1766718756] [2020-09-25 12:14:28,350 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:28,350 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:14:28,350 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747706732] [2020-09-25 12:14:28,351 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:14:28,352 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:28,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:14:28,354 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=411, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:14:28,354 INFO L87 Difference]: Start difference. First operand 66 states and 77 transitions. Second operand 22 states. [2020-09-25 12:14:29,292 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:29,293 INFO L93 Difference]: Finished difference Result 83 states and 96 transitions. [2020-09-25 12:14:29,293 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:14:29,293 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 12:14:29,294 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:29,294 INFO L225 Difference]: With dead ends: 83 [2020-09-25 12:14:29,295 INFO L226 Difference]: Without dead ends: 77 [2020-09-25 12:14:29,296 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 12:14:29,296 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-09-25 12:14:29,300 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-09-25 12:14:29,301 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-09-25 12:14:29,302 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 85 transitions. [2020-09-25 12:14:29,302 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 85 transitions. Word has length 86 [2020-09-25 12:14:29,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:29,302 INFO L479 AbstractCegarLoop]: Abstraction has 71 states and 85 transitions. [2020-09-25 12:14:29,302 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 12:14:29,303 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 85 transitions. [2020-09-25 12:14:29,304 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 12:14:29,304 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:29,304 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:29,304 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-25 12:14:29,304 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:29,304 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:29,305 INFO L82 PathProgramCache]: Analyzing trace with hash -694157514, now seen corresponding path program 8 times [2020-09-25 12:14:29,305 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:29,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [813966580] [2020-09-25 12:14:29,305 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:29,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:29,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:30,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:30,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:14:30,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:30,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1534 [2020-09-25 12:14:30,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:30,860 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 12:14:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:30,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 12:14:30,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:30,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:30,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:30,908 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:30,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:30,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:30,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:30,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:30,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:30,910 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:30,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:30,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:30,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:30,912 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:30,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:30,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:31,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:31,059 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:31,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:31,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-09-25 12:14:31,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:31,060 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:31,060 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:31,060 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:31,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:31,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:31,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:31,232 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:31,233 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:31,233 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:31,233 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 12:14:31,233 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:31,233 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:31,234 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:31,234 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:31,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:31,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:31,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:31,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:31,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:31,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:31,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:14:31,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:31,345 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:31,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:31,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:31,413 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 12:14:31,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:31,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,020 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,020 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:14:32,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 594 [2020-09-25 12:14:32,021 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,021 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,021 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:14:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:14:32,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:32,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-09-25 12:14:32,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,406 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:14:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:32,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:32,483 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:32,488 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:32,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-09-25 12:14:32,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:32,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:32,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:32,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,685 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:32,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:32,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:32,862 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:32,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:32,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:32,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-09-25 12:14:32,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:32,888 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:32,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:32,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:32,958 INFO L134 CoverageAnalysis]: Checked inductivity of 229 backedges. 24 proven. 126 refuted. 0 times theorem prover too weak. 79 trivial. 0 not checked. [2020-09-25 12:14:32,958 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [813966580] [2020-09-25 12:14:32,958 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:32,958 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-09-25 12:14:32,959 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1405089668] [2020-09-25 12:14:32,959 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-09-25 12:14:32,959 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:32,959 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-09-25 12:14:32,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=52, Invalid=500, Unknown=0, NotChecked=0, Total=552 [2020-09-25 12:14:32,960 INFO L87 Difference]: Start difference. First operand 71 states and 85 transitions. Second operand 24 states. [2020-09-25 12:14:34,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:34,508 INFO L93 Difference]: Finished difference Result 88 states and 104 transitions. [2020-09-25 12:14:34,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-09-25 12:14:34,509 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 96 [2020-09-25 12:14:34,510 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:34,511 INFO L225 Difference]: With dead ends: 88 [2020-09-25 12:14:34,511 INFO L226 Difference]: Without dead ends: 82 [2020-09-25 12:14:34,512 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 20 SyntacticMatches, 6 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 268 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=191, Invalid=1531, Unknown=0, NotChecked=0, Total=1722 [2020-09-25 12:14:34,512 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-25 12:14:34,517 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 76. [2020-09-25 12:14:34,518 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-25 12:14:34,519 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 93 transitions. [2020-09-25 12:14:34,519 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 93 transitions. Word has length 96 [2020-09-25 12:14:34,519 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:34,519 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 93 transitions. [2020-09-25 12:14:34,519 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-09-25 12:14:34,520 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 93 transitions. [2020-09-25 12:14:34,521 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 107 [2020-09-25 12:14:34,521 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:34,521 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 7, 7, 7, 7, 7, 7, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:34,521 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-25 12:14:34,522 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:34,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:34,522 INFO L82 PathProgramCache]: Analyzing trace with hash -1979672437, now seen corresponding path program 9 times [2020-09-25 12:14:34,522 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:34,522 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1384698346] [2020-09-25 12:14:34,523 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:34,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:34,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:36,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-09-25 12:14:36,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1942 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 48 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-09-25 12:14:36,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:36,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:36,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:36,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,554 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:36,554 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:36,554 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:36,554 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:36,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:36,555 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:36,555 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:36,555 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:36,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:36,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:36,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:36,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:36,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:36,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-09-25 12:14:36,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:36,621 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:36,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-09-25 12:14:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:36,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:36,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:36,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:36,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:36,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:36,783 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:36,783 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:36,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-09-25 12:14:36,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:36,784 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:36,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:36,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:36,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:36,857 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:36,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:36,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:36,896 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:36,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:36,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:36,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-09-25 12:14:36,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:36,897 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:36,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:36,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:36,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:36,985 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 43 [2020-09-25 12:14:36,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:37,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:37,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:37,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-09-25 12:14:37,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:37,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 733 [2020-09-25 12:14:37,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:37,733 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-09-25 12:14:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:37,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-09-25 12:14:37,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:37,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:37,822 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:37,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:38,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:38,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 333 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-09-25 12:14:38,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:38,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:38,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:38,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:38,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:38,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:38,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:38,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 400 [2020-09-25 12:14:38,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:38,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:38,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:14:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:38,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:38,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:38,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:38,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:38,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:38,951 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:38,951 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:38,952 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:38,952 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-09-25 12:14:38,952 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:38,953 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:38,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:38,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:38,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:39,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:39,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:39,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:39,166 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:39,166 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:39,166 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:39,166 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-09-25 12:14:39,167 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:39,167 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:39,167 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:39,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:39,168 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:39,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:39,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:39,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:39,332 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:39,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:39,333 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:39,333 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-09-25 12:14:39,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:39,334 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:39,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:39,335 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:39,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:39,420 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 25 proven. 183 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-09-25 12:14:39,420 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1384698346] [2020-09-25 12:14:39,421 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:39,421 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [27] total 27 [2020-09-25 12:14:39,421 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [496612949] [2020-09-25 12:14:39,421 INFO L459 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-09-25 12:14:39,423 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:39,425 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-09-25 12:14:39,427 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=66, Invalid=636, Unknown=0, NotChecked=0, Total=702 [2020-09-25 12:14:39,427 INFO L87 Difference]: Start difference. First operand 76 states and 93 transitions. Second operand 27 states. [2020-09-25 12:14:41,282 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:41,282 INFO L93 Difference]: Finished difference Result 93 states and 112 transitions. [2020-09-25 12:14:41,282 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-09-25 12:14:41,282 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 106 [2020-09-25 12:14:41,283 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:41,284 INFO L225 Difference]: With dead ends: 93 [2020-09-25 12:14:41,284 INFO L226 Difference]: Without dead ends: 87 [2020-09-25 12:14:41,286 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 74 GetRequests, 23 SyntacticMatches, 5 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 376 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=246, Invalid=2010, Unknown=0, NotChecked=0, Total=2256 [2020-09-25 12:14:41,287 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2020-09-25 12:14:41,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 81. [2020-09-25 12:14:41,293 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-09-25 12:14:41,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 101 transitions. [2020-09-25 12:14:41,294 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 101 transitions. Word has length 106 [2020-09-25 12:14:41,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:41,294 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 101 transitions. [2020-09-25 12:14:41,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-09-25 12:14:41,294 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 101 transitions. [2020-09-25 12:14:41,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 87 [2020-09-25 12:14:41,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:41,296 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 5, 5, 5, 5, 5, 5, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:41,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-25 12:14:41,297 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:41,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:41,297 INFO L82 PathProgramCache]: Analyzing trace with hash -945819615, now seen corresponding path program 10 times [2020-09-25 12:14:41,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:41,297 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1499897659] [2020-09-25 12:14:41,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:41,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:41,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:42,394 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:42,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 107 [2020-09-25 12:14:42,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:42,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1080 [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-09-25 12:14:42,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:42,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:42,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:42,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:42,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:42,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:42,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:42,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:42,444 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:42,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:42,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:42,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:42,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:42,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:42,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:42,630 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:42,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-09-25 12:14:42,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:42,632 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:14:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:42,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:42,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:42,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:42,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:42,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:42,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:42,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:42,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-09-25 12:14:42,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:42,937 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:42,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:42,938 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:42,938 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:42,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:42,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:43,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:43,080 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:43,080 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:43,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:43,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:43,169 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:43,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:43,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:43,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:43,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:43,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:43,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 12:14:43,281 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:43,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:43,465 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:43,465 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:43,465 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:43,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-09-25 12:14:43,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:43,466 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:43,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:43,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:43,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:43,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:43,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:43,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:43,593 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:43,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:43,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-09-25 12:14:43,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:43,593 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:43,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:43,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:43,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:43,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:43,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:43,754 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:43,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:43,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:43,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-09-25 12:14:43,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:43,756 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:43,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:43,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:43,803 INFO L134 CoverageAnalysis]: Checked inductivity of 167 backedges. 6 proven. 106 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-09-25 12:14:43,803 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1499897659] [2020-09-25 12:14:43,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-09-25 12:14:43,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-09-25 12:14:43,805 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1005300559] [2020-09-25 12:14:43,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-09-25 12:14:43,806 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-25 12:14:43,806 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-09-25 12:14:43,807 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=413, Unknown=0, NotChecked=0, Total=462 [2020-09-25 12:14:43,807 INFO L87 Difference]: Start difference. First operand 81 states and 101 transitions. Second operand 22 states. [2020-09-25 12:14:44,938 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-25 12:14:44,938 INFO L93 Difference]: Finished difference Result 97 states and 121 transitions. [2020-09-25 12:14:44,940 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-09-25 12:14:44,940 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 86 [2020-09-25 12:14:44,940 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-25 12:14:44,941 INFO L225 Difference]: With dead ends: 97 [2020-09-25 12:14:44,941 INFO L226 Difference]: Without dead ends: 91 [2020-09-25 12:14:44,946 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 191 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=164, Invalid=1168, Unknown=0, NotChecked=0, Total=1332 [2020-09-25 12:14:44,946 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2020-09-25 12:14:44,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 85. [2020-09-25 12:14:44,960 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-09-25 12:14:44,964 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 110 transitions. [2020-09-25 12:14:44,964 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 110 transitions. Word has length 86 [2020-09-25 12:14:44,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-25 12:14:44,965 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 110 transitions. [2020-09-25 12:14:44,965 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-09-25 12:14:44,965 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 110 transitions. [2020-09-25 12:14:44,966 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 97 [2020-09-25 12:14:44,966 INFO L414 BasicCegarLoop]: Found error trace [2020-09-25 12:14:44,970 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 6, 6, 6, 6, 6, 6, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-25 12:14:44,970 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-09-25 12:14:44,973 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-25 12:14:44,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-25 12:14:44,973 INFO L82 PathProgramCache]: Analyzing trace with hash 863423990, now seen corresponding path program 11 times [2020-09-25 12:14:44,973 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-25 12:14:44,974 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [864873205] [2020-09-25 12:14:44,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-25 12:14:45,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:45,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 119 [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1379 [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,383 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 43 [2020-09-25 12:14:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 20 [2020-09-25 12:14:46,384 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-09-25 12:14:46,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:46,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-25 12:14:46,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,430 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-09-25 12:14:46,430 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,430 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-09-25 12:14:46,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:46,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 12 [2020-09-25 12:14:46,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:46,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 265 [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:46,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:46,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:46,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:46,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:46,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:46,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:46,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:46,955 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-09-25 12:14:46,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:46,956 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:46,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:46,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-09-25 12:14:47,016 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:47,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:47,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-09-25 12:14:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:47,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-09-25 12:14:47,091 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:47,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:47,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:47,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 13 [2020-09-25 12:14:47,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:47,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-09-25 12:14:47,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:47,188 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-09-25 12:14:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:47,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-09-25 12:14:47,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:47,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 53 [2020-09-25 12:14:47,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:47,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-09-25 12:14:47,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-09-25 12:14:47,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:47,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:47,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-09-25 12:14:47,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-09-25 12:14:47,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-09-25 12:14:47,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-09-25 12:14:47,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-09-25 12:14:47,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-09-25 12:14:47,787 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-09-25 12:14:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-09-25 12:14:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-09-25 12:14:47,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-09-25 12:14:47,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-09-25 12:14:47,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-09-25 12:14:47,798 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-25 12:14:47,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking...