/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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 SequenceOfStatements --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=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem16_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 00:03:27,915 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 00:03:27,920 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 00:03:27,977 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 00:03:27,978 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 00:03:27,984 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 00:03:27,987 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 00:03:27,992 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 00:03:27,996 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 00:03:28,002 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 00:03:28,003 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 00:03:28,005 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 00:03:28,005 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 00:03:28,008 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 00:03:28,011 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 00:03:28,013 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 00:03:28,014 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 00:03:28,017 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 00:03:28,025 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 00:03:28,047 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 00:03:28,049 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 00:03:28,050 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 00:03:28,051 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 00:03:28,054 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 00:03:28,063 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 00:03:28,063 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 00:03:28,064 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 00:03:28,067 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 00:03:28,068 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 00:03:28,069 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 00:03:28,069 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 00:03:28,070 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 00:03:28,072 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 00:03:28,073 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 00:03:28,074 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 00:03:28,074 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 00:03:28,075 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 00:03:28,075 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 00:03:28,075 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 00:03:28,076 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 00:03:28,077 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 00:03:28,084 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 [2020-10-27 00:03:28,133 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 00:03:28,133 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 00:03:28,134 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 00:03:28,135 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 00:03:28,135 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 00:03:28,135 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 00:03:28,135 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 00:03:28,136 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 00:03:28,136 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 00:03:28,136 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 00:03:28,136 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 00:03:28,137 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 00:03:28,138 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 00:03:28,138 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 00:03:28,138 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 00:03:28,138 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 00:03:28,138 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 00:03:28,139 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 00:03:28,139 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 00:03:28,139 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 00:03:28,139 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 00:03:28,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 00:03:28,140 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 00:03:28,140 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 00:03:28,140 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 00:03:28,561 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 00:03:28,592 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 00:03:28,596 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 00:03:28,598 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 00:03:28,598 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 00:03:28,599 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem16_label54.c [2020-10-27 00:03:28,673 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20427a7fb/d67e6c185bb24354b2765de8caccec2c/FLAG497023e1e [2020-10-27 00:03:29,510 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 00:03:29,514 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem16_label54.c [2020-10-27 00:03:29,546 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20427a7fb/d67e6c185bb24354b2765de8caccec2c/FLAG497023e1e [2020-10-27 00:03:29,619 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/20427a7fb/d67e6c185bb24354b2765de8caccec2c [2020-10-27 00:03:29,622 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 00:03:29,629 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 00:03:29,631 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:29,631 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 00:03:29,635 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 00:03:29,636 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:29" (1/1) ... [2020-10-27 00:03:29,640 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6f6d5d43 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:29, skipping insertion in model container [2020-10-27 00:03:29,640 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 12:03:29" (1/1) ... [2020-10-27 00:03:29,649 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 00:03:29,714 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 00:03:30,416 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:30,433 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 00:03:30,680 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 00:03:30,704 INFO L208 MainTranslator]: Completed translation [2020-10-27 00:03:30,705 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30 WrapperNode [2020-10-27 00:03:30,706 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 00:03:30,707 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 00:03:30,707 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 00:03:30,707 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 00:03:30,722 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,723 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,772 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,772 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,881 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,897 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,917 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (1/1) ... [2020-10-27 00:03:30,940 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 00:03:30,941 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 00:03:30,941 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 00:03:30,941 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 00:03:30,943 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (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 [2020-10-27 00:03:31,023 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 00:03:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 00:03:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 00:03:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 00:03:31,024 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-27 00:03:31,025 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 00:03:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 00:03:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-27 00:03:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 00:03:31,025 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 00:03:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 00:03:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 00:03:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 00:03:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 00:03:31,026 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 00:03:31,027 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 00:03:34,024 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 00:03:34,024 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 00:03:34,027 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:03:34 BoogieIcfgContainer [2020-10-27 00:03:34,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 00:03:34,029 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 00:03:34,029 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 00:03:34,033 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 00:03:34,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 12:03:29" (1/3) ... [2020-10-27 00:03:34,034 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e16cd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:03:34, skipping insertion in model container [2020-10-27 00:03:34,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 12:03:30" (2/3) ... [2020-10-27 00:03:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@e16cd97 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 12:03:34, skipping insertion in model container [2020-10-27 00:03:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 12:03:34" (3/3) ... [2020-10-27 00:03:34,037 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem16_label54.c [2020-10-27 00:03:34,050 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 00:03:34,056 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 00:03:34,071 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 00:03:34,103 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 00:03:34,104 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 00:03:34,104 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 00:03:34,104 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 00:03:34,104 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 00:03:34,104 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 00:03:34,104 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 00:03:34,105 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 00:03:34,133 INFO L276 IsEmpty]: Start isEmpty. Operand 413 states. [2020-10-27 00:03:34,160 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 00:03:34,160 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:34,161 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:34,162 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:34,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:34,176 INFO L82 PathProgramCache]: Analyzing trace with hash 323410068, now seen corresponding path program 1 times [2020-10-27 00:03:34,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:34,187 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1816784829] [2020-10-27 00:03:34,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:34,425 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:34,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:34,926 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:34,926 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 42 [2020-10-27 00:03:34,926 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:34,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 495 [2020-10-27 00:03:34,928 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:34,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 33 [2020-10-27 00:03:34,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:03:35,118 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification that was a NOOP. DAG size: 61 [2020-10-27 00:03:35,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:35,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:35,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:35,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:35,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:35,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:35,163 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:03:35,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:35,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:35,164 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:35,178 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:03:35,179 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1816784829] [2020-10-27 00:03:35,181 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:03:35,182 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-27 00:03:35,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [328177090] [2020-10-27 00:03:35,188 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 00:03:35,188 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:35,203 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 00:03:35,204 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 00:03:35,207 INFO L87 Difference]: Start difference. First operand 413 states. Second operand 4 states. [2020-10-27 00:03:35,363 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 63 [2020-10-27 00:03:40,409 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:40,410 INFO L93 Difference]: Finished difference Result 1174 states and 2170 transitions. [2020-10-27 00:03:40,410 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 00:03:40,412 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-10-27 00:03:40,412 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:40,432 INFO L225 Difference]: With dead ends: 1174 [2020-10-27 00:03:40,432 INFO L226 Difference]: Without dead ends: 697 [2020-10-27 00:03:40,443 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 00:03:40,466 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-27 00:03:40,571 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 693. [2020-10-27 00:03:40,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 693 states. [2020-10-27 00:03:40,578 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 693 states to 693 states and 1015 transitions. [2020-10-27 00:03:40,580 INFO L78 Accepts]: Start accepts. Automaton has 693 states and 1015 transitions. Word has length 32 [2020-10-27 00:03:40,581 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:40,581 INFO L481 AbstractCegarLoop]: Abstraction has 693 states and 1015 transitions. [2020-10-27 00:03:40,581 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 00:03:40,581 INFO L276 IsEmpty]: Start isEmpty. Operand 693 states and 1015 transitions. [2020-10-27 00:03:40,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 109 [2020-10-27 00:03:40,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:40,590 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:40,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 00:03:40,591 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:40,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:40,593 INFO L82 PathProgramCache]: Analyzing trace with hash -950769452, now seen corresponding path program 1 times [2020-10-27 00:03:40,593 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:40,594 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [153033908] [2020-10-27 00:03:40,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:40,660 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:40,700 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 120 [2020-10-27 00:03:41,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:41,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1104 [2020-10-27 00:03:41,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:03:41,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:41,772 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 82 [2020-10-27 00:03:41,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:03:41,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:41,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:41,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:41,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:41,922 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:41,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:41,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 00:03:41,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:41,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:41,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:41,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 00:03:41,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:41,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:41,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:42,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:42,154 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 00:03:42,154 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 176 [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 77 [2020-10-27 00:03:42,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:42,303 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 24 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 00:03:42,303 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [153033908] [2020-10-27 00:03:42,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:03:42,304 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 00:03:42,304 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [896293942] [2020-10-27 00:03:42,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:03:42,310 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:42,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:03:42,318 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:03:42,319 INFO L87 Difference]: Start difference. First operand 693 states and 1015 transitions. Second operand 7 states. [2020-10-27 00:03:47,376 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:47,376 INFO L93 Difference]: Finished difference Result 2081 states and 3078 transitions. [2020-10-27 00:03:47,377 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:03:47,377 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 108 [2020-10-27 00:03:47,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:47,392 INFO L225 Difference]: With dead ends: 2081 [2020-10-27 00:03:47,392 INFO L226 Difference]: Without dead ends: 1394 [2020-10-27 00:03:47,395 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:47,399 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1394 states. [2020-10-27 00:03:47,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1394 to 1386. [2020-10-27 00:03:47,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1386 states. [2020-10-27 00:03:47,452 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1386 states to 1386 states and 1822 transitions. [2020-10-27 00:03:47,452 INFO L78 Accepts]: Start accepts. Automaton has 1386 states and 1822 transitions. Word has length 108 [2020-10-27 00:03:47,453 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:47,453 INFO L481 AbstractCegarLoop]: Abstraction has 1386 states and 1822 transitions. [2020-10-27 00:03:47,453 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:03:47,453 INFO L276 IsEmpty]: Start isEmpty. Operand 1386 states and 1822 transitions. [2020-10-27 00:03:47,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 196 [2020-10-27 00:03:47,459 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:47,459 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:47,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 00:03:47,460 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:47,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:47,461 INFO L82 PathProgramCache]: Analyzing trace with hash 1064944130, now seen corresponding path program 1 times [2020-10-27 00:03:47,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:47,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [50542997] [2020-10-27 00:03:47,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:47,514 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:47,550 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:47,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:48,657 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:49,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:51,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 209 [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4328 [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:03:51,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:03:51,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 171 [2020-10-27 00:03:51,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,019 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:03:52,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:52,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:52,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:52,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:03:52,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:52,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 00:03:52,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:03:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:03:52,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:03:52,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:03:52,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:52,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:52,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:52,393 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:52,394 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:03:52,394 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:03:52,394 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 00:03:52,394 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:52,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:03:52,395 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:03:52,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:52,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:52,674 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:03:52,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:03:52,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:03:52,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 00:03:52,675 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:03:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:03:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:03:52,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 73 [2020-10-27 00:03:52,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:03:52,840 INFO L134 CoverageAnalysis]: Checked inductivity of 120 backedges. 51 proven. 0 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 00:03:52,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [50542997] [2020-10-27 00:03:52,842 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 00:03:52,842 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 00:03:52,842 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [372122462] [2020-10-27 00:03:52,844 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:03:52,844 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:03:52,845 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:03:52,846 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:03:52,846 INFO L87 Difference]: Start difference. First operand 1386 states and 1822 transitions. Second operand 8 states. [2020-10-27 00:03:58,254 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:03:58,254 INFO L93 Difference]: Finished difference Result 3482 states and 4740 transitions. [2020-10-27 00:03:58,255 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:03:58,255 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 195 [2020-10-27 00:03:58,256 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:03:58,272 INFO L225 Difference]: With dead ends: 3482 [2020-10-27 00:03:58,272 INFO L226 Difference]: Without dead ends: 2102 [2020-10-27 00:03:58,280 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=71, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:03:58,283 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2102 states. [2020-10-27 00:03:58,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2102 to 2087. [2020-10-27 00:03:58,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2087 states. [2020-10-27 00:03:58,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2087 states to 2087 states and 2696 transitions. [2020-10-27 00:03:58,363 INFO L78 Accepts]: Start accepts. Automaton has 2087 states and 2696 transitions. Word has length 195 [2020-10-27 00:03:58,368 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:03:58,368 INFO L481 AbstractCegarLoop]: Abstraction has 2087 states and 2696 transitions. [2020-10-27 00:03:58,368 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:03:58,368 INFO L276 IsEmpty]: Start isEmpty. Operand 2087 states and 2696 transitions. [2020-10-27 00:03:58,377 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 259 [2020-10-27 00:03:58,378 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:03:58,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:03:58,379 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 00:03:58,379 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:03:58,379 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:03:58,380 INFO L82 PathProgramCache]: Analyzing trace with hash 1886240764, now seen corresponding path program 1 times [2020-10-27 00:03:58,380 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:03:58,381 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [964952897] [2020-10-27 00:03:58,381 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:03:58,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:03:58,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:58,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:03:59,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:00,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 272 [2020-10-27 00:04:01,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3309 [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 263 [2020-10-27 00:04:01,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:01,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:01,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:01,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 28 [2020-10-27 00:04:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:01,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:01,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,190 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:02,190 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:02,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 00:04:02,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:02,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 00:04:02,191 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:02,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:02,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:02,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 427 [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:04:02,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:02,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:04:02,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:03,571 INFO L134 CoverageAnalysis]: Checked inductivity of 139 backedges. 2 proven. 115 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 00:04:03,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [964952897] [2020-10-27 00:04:03,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:03,572 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 00:04:03,572 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219367288] [2020-10-27 00:04:03,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 00:04:03,573 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:03,573 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 00:04:03,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:03,574 INFO L87 Difference]: Start difference. First operand 2087 states and 2696 transitions. Second operand 11 states. [2020-10-27 00:04:07,362 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 80 DAG size of output: 78 [2020-10-27 00:04:07,677 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 72 [2020-10-27 00:04:08,190 WARN L193 SmtUtils]: Spent 183.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-27 00:04:08,463 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 82 [2020-10-27 00:04:08,903 WARN L193 SmtUtils]: Spent 160.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 80 [2020-10-27 00:04:09,225 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 82 [2020-10-27 00:04:09,640 WARN L193 SmtUtils]: Spent 187.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 79 [2020-10-27 00:04:12,263 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:12,264 INFO L93 Difference]: Finished difference Result 2528 states and 3295 transitions. [2020-10-27 00:04:12,265 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 00:04:12,265 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 258 [2020-10-27 00:04:12,266 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:12,279 INFO L225 Difference]: With dead ends: 2528 [2020-10-27 00:04:12,280 INFO L226 Difference]: Without dead ends: 2525 [2020-10-27 00:04:12,282 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=191, Invalid=459, Unknown=0, NotChecked=0, Total=650 [2020-10-27 00:04:12,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2525 states. [2020-10-27 00:04:12,348 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2525 to 2428. [2020-10-27 00:04:12,348 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2428 states. [2020-10-27 00:04:12,359 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2428 states to 2428 states and 3170 transitions. [2020-10-27 00:04:12,359 INFO L78 Accepts]: Start accepts. Automaton has 2428 states and 3170 transitions. Word has length 258 [2020-10-27 00:04:12,360 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:12,360 INFO L481 AbstractCegarLoop]: Abstraction has 2428 states and 3170 transitions. [2020-10-27 00:04:12,361 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 00:04:12,361 INFO L276 IsEmpty]: Start isEmpty. Operand 2428 states and 3170 transitions. [2020-10-27 00:04:12,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 446 [2020-10-27 00:04:12,372 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:12,373 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:12,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 00:04:12,374 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:12,374 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:12,374 INFO L82 PathProgramCache]: Analyzing trace with hash 762572394, now seen corresponding path program 1 times [2020-10-27 00:04:12,375 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:12,375 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [627248796] [2020-10-27 00:04:12,375 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:12,442 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:12,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:12,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:13,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:15,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:16,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,467 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,468 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 463 [2020-10-27 00:04:17,468 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 00:04:17,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5016 [2020-10-27 00:04:17,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 101 [2020-10-27 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 255 [2020-10-27 00:04:17,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,616 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:17,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:17,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:04:17,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:17,629 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:17,629 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,650 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:17,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,772 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:17,773 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:17,774 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 00:04:17,774 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:17,799 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 99 [2020-10-27 00:04:17,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:17,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:17,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,254 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 426 [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:18,255 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:18,256 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 136 [2020-10-27 00:04:18,256 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:18,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 234 [2020-10-27 00:04:18,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:18,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:18,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 116 [2020-10-27 00:04:18,522 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:18,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 349 [2020-10-27 00:04:18,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:18,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:18,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:18,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:18,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:18,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:04:18,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:18,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:18,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:18,976 INFO L134 CoverageAnalysis]: Checked inductivity of 609 backedges. 280 proven. 142 refuted. 0 times theorem prover too weak. 187 trivial. 0 not checked. [2020-10-27 00:04:18,976 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [627248796] [2020-10-27 00:04:18,977 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:18,977 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:04:18,977 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [327197663] [2020-10-27 00:04:18,978 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:04:18,979 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:18,979 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:04:18,979 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:04:18,980 INFO L87 Difference]: Start difference. First operand 2428 states and 3170 transitions. Second operand 8 states. [2020-10-27 00:04:25,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:25,833 INFO L93 Difference]: Finished difference Result 6301 states and 8418 transitions. [2020-10-27 00:04:25,834 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:25,834 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 445 [2020-10-27 00:04:25,835 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:25,854 INFO L225 Difference]: With dead ends: 6301 [2020-10-27 00:04:25,854 INFO L226 Difference]: Without dead ends: 3158 [2020-10-27 00:04:25,863 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:04:25,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3158 states. [2020-10-27 00:04:25,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3158 to 3136. [2020-10-27 00:04:25,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3136 states. [2020-10-27 00:04:25,998 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3136 states to 3136 states and 3466 transitions. [2020-10-27 00:04:25,998 INFO L78 Accepts]: Start accepts. Automaton has 3136 states and 3466 transitions. Word has length 445 [2020-10-27 00:04:25,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:25,999 INFO L481 AbstractCegarLoop]: Abstraction has 3136 states and 3466 transitions. [2020-10-27 00:04:25,999 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:04:25,999 INFO L276 IsEmpty]: Start isEmpty. Operand 3136 states and 3466 transitions. [2020-10-27 00:04:26,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 559 [2020-10-27 00:04:26,019 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:26,020 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:26,020 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 00:04:26,020 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:26,021 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:26,021 INFO L82 PathProgramCache]: Analyzing trace with hash 878268356, now seen corresponding path program 1 times [2020-10-27 00:04:26,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:26,022 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [417753392] [2020-10-27 00:04:26,022 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:26,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:26,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:26,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:28,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,129 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,129 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 578 [2020-10-27 00:04:31,129 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:31,129 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 00:04:31,129 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 00:04:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:04:31,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-27 00:04:31,130 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:31,275 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,292 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:31,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:04:31,294 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:31,335 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 121 [2020-10-27 00:04:31,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 00:04:31,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,519 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 108 [2020-10-27 00:04:31,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,614 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:31,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 127 [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,654 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 237 [2020-10-27 00:04:31,676 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,730 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:31,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 00:04:31,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:31,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 00:04:31,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:31,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:04:31,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:31,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:31,879 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 462 [2020-10-27 00:04:31,892 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:31,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:31,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:31,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:31,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:31,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 00:04:31,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:31,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:31,924 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:32,273 INFO L134 CoverageAnalysis]: Checked inductivity of 1043 backedges. 120 proven. 352 refuted. 0 times theorem prover too weak. 571 trivial. 0 not checked. [2020-10-27 00:04:32,273 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [417753392] [2020-10-27 00:04:32,275 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:32,275 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:32,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1608911239] [2020-10-27 00:04:32,276 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:32,276 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:32,277 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:32,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:32,277 INFO L87 Difference]: Start difference. First operand 3136 states and 3466 transitions. Second operand 7 states. [2020-10-27 00:04:35,930 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:35,931 INFO L93 Difference]: Finished difference Result 7089 states and 8198 transitions. [2020-10-27 00:04:35,932 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:35,932 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 558 [2020-10-27 00:04:35,932 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:35,956 INFO L225 Difference]: With dead ends: 7089 [2020-10-27 00:04:35,956 INFO L226 Difference]: Without dead ends: 3959 [2020-10-27 00:04:35,966 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:04:35,970 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3959 states. [2020-10-27 00:04:36,077 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3959 to 3823. [2020-10-27 00:04:36,077 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3823 states. [2020-10-27 00:04:36,087 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3823 states to 3823 states and 4171 transitions. [2020-10-27 00:04:36,087 INFO L78 Accepts]: Start accepts. Automaton has 3823 states and 4171 transitions. Word has length 558 [2020-10-27 00:04:36,088 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:36,088 INFO L481 AbstractCegarLoop]: Abstraction has 3823 states and 4171 transitions. [2020-10-27 00:04:36,088 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:36,088 INFO L276 IsEmpty]: Start isEmpty. Operand 3823 states and 4171 transitions. [2020-10-27 00:04:36,099 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 698 [2020-10-27 00:04:36,099 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:36,100 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-27 00:04:36,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 00:04:36,101 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:36,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:36,101 INFO L82 PathProgramCache]: Analyzing trace with hash -1644684750, now seen corresponding path program 1 times [2020-10-27 00:04:36,102 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:36,102 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [270352367] [2020-10-27 00:04:36,102 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:36,214 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:36,306 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:36,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:41,327 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:41,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 717 [2020-10-27 00:04:41,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:04:41,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5089 [2020-10-27 00:04:41,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 249 [2020-10-27 00:04:41,328 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:41,328 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:41,540 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:41,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:41,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:41,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:41,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:41,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:41,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:04:41,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:41,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:41,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:41,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:41,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:41,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:41,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:41,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:04:41,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:41,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 00:04:41,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:41,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 234 [2020-10-27 00:04:41,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:42,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:04:42,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:42,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:42,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:42,262 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:42,262 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 00:04:42,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:42,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:42,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:42,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:42,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 376 [2020-10-27 00:04:42,565 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:42,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:42,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:42,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:42,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:42,673 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 491 [2020-10-27 00:04:42,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:42,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:42,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:42,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:42,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 00:04:42,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:42,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:42,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:42,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:04:42,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:42,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:42,864 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:42,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:42,865 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:42,865 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 00:04:42,865 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:42,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:42,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:42,866 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:43,587 INFO L134 CoverageAnalysis]: Checked inductivity of 1097 backedges. 258 proven. 290 refuted. 0 times theorem prover too weak. 549 trivial. 0 not checked. [2020-10-27 00:04:43,588 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [270352367] [2020-10-27 00:04:43,588 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:43,588 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:43,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [323281653] [2020-10-27 00:04:43,589 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:43,590 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:43,590 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:43,590 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:43,591 INFO L87 Difference]: Start difference. First operand 3823 states and 4171 transitions. Second operand 7 states. [2020-10-27 00:04:47,871 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:47,872 INFO L93 Difference]: Finished difference Result 8699 states and 9717 transitions. [2020-10-27 00:04:47,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:04:47,873 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 697 [2020-10-27 00:04:47,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:47,898 INFO L225 Difference]: With dead ends: 8699 [2020-10-27 00:04:47,898 INFO L226 Difference]: Without dead ends: 5558 [2020-10-27 00:04:47,909 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 16 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:47,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5558 states. [2020-10-27 00:04:48,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5558 to 5541. [2020-10-27 00:04:48,034 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5541 states. [2020-10-27 00:04:48,046 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5541 states to 5541 states and 6006 transitions. [2020-10-27 00:04:48,047 INFO L78 Accepts]: Start accepts. Automaton has 5541 states and 6006 transitions. Word has length 697 [2020-10-27 00:04:48,048 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:48,048 INFO L481 AbstractCegarLoop]: Abstraction has 5541 states and 6006 transitions. [2020-10-27 00:04:48,048 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:48,048 INFO L276 IsEmpty]: Start isEmpty. Operand 5541 states and 6006 transitions. [2020-10-27 00:04:48,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 944 [2020-10-27 00:04:48,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:48,068 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-10-27 00:04:48,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 00:04:48,069 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:48,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:48,070 INFO L82 PathProgramCache]: Analyzing trace with hash 1992924342, now seen corresponding path program 1 times [2020-10-27 00:04:48,070 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:48,070 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1196109586] [2020-10-27 00:04:48,070 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:48,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:48,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:48,658 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:50,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,218 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:53,218 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 967 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:04:53,219 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:53,353 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:04:53,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:53,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,362 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:53,363 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:53,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:53,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:04:53,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:53,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:53,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:04:53,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:53,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:53,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:04:53,586 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:53,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:53,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:04:53,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:53,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:04:53,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:04:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:04:53,659 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:04:53,659 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:53,692 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:04:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:53,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:53,969 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:53,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:04:53,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:53,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 00:04:53,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:04:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:04:53,970 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:04:53,970 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:54,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 484 [2020-10-27 00:04:54,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:54,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:54,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 116 [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 113 [2020-10-27 00:04:54,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:54,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:54,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:04:54,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:54,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:54,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:04:54,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:54,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:04:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:04:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:54,250 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:04:54,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:54,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,329 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:54,329 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:04:54,330 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:54,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:54,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 847 [2020-10-27 00:04:54,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:54,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:04:54,424 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:04:54,425 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:04:54,861 INFO L134 CoverageAnalysis]: Checked inductivity of 2281 backedges. 428 proven. 416 refuted. 0 times theorem prover too weak. 1437 trivial. 0 not checked. [2020-10-27 00:04:54,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1196109586] [2020-10-27 00:04:54,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:04:54,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:04:54,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1123450536] [2020-10-27 00:04:54,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:04:54,864 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:04:54,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:04:54,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:04:54,865 INFO L87 Difference]: Start difference. First operand 5541 states and 6006 transitions. Second operand 7 states. [2020-10-27 00:04:59,266 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:04:59,266 INFO L93 Difference]: Finished difference Result 11793 states and 13006 transitions. [2020-10-27 00:04:59,272 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:04:59,272 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 943 [2020-10-27 00:04:59,273 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:04:59,301 INFO L225 Difference]: With dead ends: 11793 [2020-10-27 00:04:59,301 INFO L226 Difference]: Without dead ends: 6936 [2020-10-27 00:04:59,318 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:04:59,326 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6936 states. [2020-10-27 00:04:59,468 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6936 to 6905. [2020-10-27 00:04:59,468 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6905 states. [2020-10-27 00:04:59,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 7444 transitions. [2020-10-27 00:04:59,482 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 7444 transitions. Word has length 943 [2020-10-27 00:04:59,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:04:59,484 INFO L481 AbstractCegarLoop]: Abstraction has 6905 states and 7444 transitions. [2020-10-27 00:04:59,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:04:59,484 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 7444 transitions. [2020-10-27 00:04:59,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1115 [2020-10-27 00:04:59,510 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:04:59,511 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:04:59,511 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 00:04:59,511 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:04:59,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:04:59,512 INFO L82 PathProgramCache]: Analyzing trace with hash -1004228344, now seen corresponding path program 1 times [2020-10-27 00:04:59,512 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:04:59,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [844555015] [2020-10-27 00:04:59,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:04:59,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:04:59,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:00,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:01,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:04,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:04,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1138 [2020-10-27 00:05:04,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:05:04,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5072 [2020-10-27 00:05:04,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 00:05:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 00:05:04,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 504 [2020-10-27 00:05:04,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:05,025 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:05,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:05,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:05,043 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 00:05:05,043 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:05,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:05,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 00:05:05,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:05:05,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:05,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 340 [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:05,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:05,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 248 [2020-10-27 00:05:05,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:05,747 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:05:05,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:05,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:06,065 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 250 [2020-10-27 00:05:06,065 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:06,065 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 00:05:06,065 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:06,065 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:06,066 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 250 [2020-10-27 00:05:06,066 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,478 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 504 [2020-10-27 00:05:06,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:06,514 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 67 [2020-10-27 00:05:06,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:06,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 573 [2020-10-27 00:05:06,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:06,626 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:05:06,626 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:06,626 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 00:05:06,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:05:06,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:06,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 717 [2020-10-27 00:05:06,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,846 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:06,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 116 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:06,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,900 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:06,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:06,909 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:06,909 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 00:05:06,909 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:06,909 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 00:05:06,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:06,910 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:06,910 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:06,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1018 [2020-10-27 00:05:06,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:06,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:07,004 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:07,004 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:05:07,004 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:07,004 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 00:05:07,004 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:05:07,005 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:07,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:08,856 INFO L134 CoverageAnalysis]: Checked inductivity of 1952 backedges. 161 proven. 1268 refuted. 0 times theorem prover too weak. 523 trivial. 0 not checked. [2020-10-27 00:05:08,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [844555015] [2020-10-27 00:05:08,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:08,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 00:05:08,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1255926535] [2020-10-27 00:05:08,859 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 00:05:08,859 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:08,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 00:05:08,860 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2020-10-27 00:05:08,860 INFO L87 Difference]: Start difference. First operand 6905 states and 7444 transitions. Second operand 8 states. [2020-10-27 00:05:12,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:12,622 INFO L93 Difference]: Finished difference Result 13145 states and 14221 transitions. [2020-10-27 00:05:12,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:05:12,624 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 1114 [2020-10-27 00:05:12,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:12,650 INFO L225 Difference]: With dead ends: 13145 [2020-10-27 00:05:12,650 INFO L226 Difference]: Without dead ends: 6924 [2020-10-27 00:05:12,665 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=104, Unknown=0, NotChecked=0, Total=156 [2020-10-27 00:05:12,673 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6924 states. [2020-10-27 00:05:12,801 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6924 to 6905. [2020-10-27 00:05:12,802 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 6905 states. [2020-10-27 00:05:12,815 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 6905 states to 6905 states and 7442 transitions. [2020-10-27 00:05:12,817 INFO L78 Accepts]: Start accepts. Automaton has 6905 states and 7442 transitions. Word has length 1114 [2020-10-27 00:05:12,818 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:12,818 INFO L481 AbstractCegarLoop]: Abstraction has 6905 states and 7442 transitions. [2020-10-27 00:05:12,818 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 00:05:12,818 INFO L276 IsEmpty]: Start isEmpty. Operand 6905 states and 7442 transitions. [2020-10-27 00:05:12,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1175 [2020-10-27 00:05:12,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:12,849 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:12,849 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 00:05:12,849 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:12,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:12,850 INFO L82 PathProgramCache]: Analyzing trace with hash -1751290392, now seen corresponding path program 1 times [2020-10-27 00:05:12,850 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:12,850 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [137693589] [2020-10-27 00:05:12,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:13,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:13,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:13,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,141 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,141 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1198 [2020-10-27 00:05:18,141 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:18,141 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5045 [2020-10-27 00:05:18,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:05:18,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 166 [2020-10-27 00:05:18,142 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,359 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:18,362 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,367 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,367 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,368 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,388 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:18,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:18,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:18,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,688 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:18,689 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:05:18,689 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,751 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:05:18,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:18,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:18,910 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:18,910 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:05:18,910 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:18,910 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 00:05:18,910 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:18,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 164 [2020-10-27 00:05:18,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:18,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 633 [2020-10-27 00:05:19,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,040 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:05:19,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,084 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:19,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 777 [2020-10-27 00:05:19,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,187 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 304 [2020-10-27 00:05:19,296 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,296 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 00:05:19,296 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 301 [2020-10-27 00:05:19,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:19,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:19,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 16 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:19,368 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:19,404 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1078 [2020-10-27 00:05:19,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:19,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:19,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 70 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:19,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:20,192 INFO L134 CoverageAnalysis]: Checked inductivity of 2254 backedges. 493 proven. 372 refuted. 0 times theorem prover too weak. 1389 trivial. 0 not checked. [2020-10-27 00:05:20,192 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [137693589] [2020-10-27 00:05:20,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:20,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:20,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2015736135] [2020-10-27 00:05:20,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:20,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:20,194 INFO L87 Difference]: Start difference. First operand 6905 states and 7442 transitions. Second operand 7 states. [2020-10-27 00:05:26,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:26,090 INFO L93 Difference]: Finished difference Result 16215 states and 17780 transitions. [2020-10-27 00:05:26,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:05:26,091 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1174 [2020-10-27 00:05:26,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:26,119 INFO L225 Difference]: With dead ends: 16215 [2020-10-27 00:05:26,119 INFO L226 Difference]: Without dead ends: 9994 [2020-10-27 00:05:26,133 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 19 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:26,145 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9994 states. [2020-10-27 00:05:26,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9994 to 9645. [2020-10-27 00:05:26,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 9645 states. [2020-10-27 00:05:26,329 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 9645 states to 9645 states and 10413 transitions. [2020-10-27 00:05:26,329 INFO L78 Accepts]: Start accepts. Automaton has 9645 states and 10413 transitions. Word has length 1174 [2020-10-27 00:05:26,330 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:26,331 INFO L481 AbstractCegarLoop]: Abstraction has 9645 states and 10413 transitions. [2020-10-27 00:05:26,331 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:26,331 INFO L276 IsEmpty]: Start isEmpty. Operand 9645 states and 10413 transitions. [2020-10-27 00:05:26,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1247 [2020-10-27 00:05:26,367 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:26,368 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:26,368 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 00:05:26,368 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:26,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:26,369 INFO L82 PathProgramCache]: Analyzing trace with hash 1210741984, now seen corresponding path program 1 times [2020-10-27 00:05:26,369 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:26,369 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2066872296] [2020-10-27 00:05:26,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:26,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:26,733 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:27,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:28,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:29,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:30,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1268 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5030 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 641 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:05:31,645 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,795 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:31,797 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:31,798 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:31,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:31,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:31,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:31,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:31,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:31,897 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:31,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:31,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:31,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,013 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,013 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:05:32,013 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,014 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:05:32,103 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 164 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:32,193 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 00:05:32,194 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 635 [2020-10-27 00:05:32,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,423 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:05:32,424 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,488 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 779 [2020-10-27 00:05:32,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:05:32,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 00:05:32,632 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:05:32,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:32,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1052 [2020-10-27 00:05:32,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:32,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:32,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 171 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 168 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:32,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:33,667 INFO L134 CoverageAnalysis]: Checked inductivity of 2715 backedges. 601 proven. 284 refuted. 0 times theorem prover too weak. 1830 trivial. 0 not checked. [2020-10-27 00:05:33,667 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2066872296] [2020-10-27 00:05:33,668 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:33,668 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:33,668 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [120062161] [2020-10-27 00:05:33,669 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:33,669 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:33,669 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:33,669 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:33,670 INFO L87 Difference]: Start difference. First operand 9645 states and 10413 transitions. Second operand 7 states. [2020-10-27 00:05:38,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:38,108 INFO L93 Difference]: Finished difference Result 20648 states and 22549 transitions. [2020-10-27 00:05:38,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 00:05:38,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1246 [2020-10-27 00:05:38,111 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:38,142 INFO L225 Difference]: With dead ends: 20648 [2020-10-27 00:05:38,142 INFO L226 Difference]: Without dead ends: 11346 [2020-10-27 00:05:38,162 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:05:38,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11346 states. [2020-10-27 00:05:38,514 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11346 to 10995. [2020-10-27 00:05:38,514 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10995 states. [2020-10-27 00:05:38,534 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10995 states to 10995 states and 11743 transitions. [2020-10-27 00:05:38,535 INFO L78 Accepts]: Start accepts. Automaton has 10995 states and 11743 transitions. Word has length 1246 [2020-10-27 00:05:38,536 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:38,536 INFO L481 AbstractCegarLoop]: Abstraction has 10995 states and 11743 transitions. [2020-10-27 00:05:38,536 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:38,536 INFO L276 IsEmpty]: Start isEmpty. Operand 10995 states and 11743 transitions. [2020-10-27 00:05:38,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1515 [2020-10-27 00:05:38,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:38,582 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:38,582 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 00:05:38,582 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:38,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:38,583 INFO L82 PathProgramCache]: Analyzing trace with hash -554162292, now seen corresponding path program 1 times [2020-10-27 00:05:38,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:38,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [736780080] [2020-10-27 00:05:38,584 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:38,891 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:39,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:39,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:40,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1540 [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5014 [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:43,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 474 [2020-10-27 00:05:43,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:43,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:44,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,162 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,187 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:44,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:44,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,330 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:44,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,398 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 224 [2020-10-27 00:05:44,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 162 [2020-10-27 00:05:44,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:44,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:44,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 218 [2020-10-27 00:05:44,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 470 [2020-10-27 00:05:44,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:44,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:44,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:44,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 599 [2020-10-27 00:05:45,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:45,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:45,159 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:45,159 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:45,160 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,214 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 794 [2020-10-27 00:05:45,257 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:45,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:45,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:05:45,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:45,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1067 [2020-10-27 00:05:45,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:45,510 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:45,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:45,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:45,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:45,643 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:45,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:45,654 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:45,654 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:05:45,654 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:45,654 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:05:45,655 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:45,655 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:45,655 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:45,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1374 [2020-10-27 00:05:45,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:45,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:45,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:45,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:05:45,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:45,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 00:05:45,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:05:45,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:45,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:47,286 INFO L134 CoverageAnalysis]: Checked inductivity of 3709 backedges. 457 proven. 493 refuted. 0 times theorem prover too weak. 2759 trivial. 0 not checked. [2020-10-27 00:05:47,287 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [736780080] [2020-10-27 00:05:47,287 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:05:47,287 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:05:47,287 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1014024166] [2020-10-27 00:05:47,289 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:05:47,289 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:05:47,289 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:05:47,289 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:05:47,290 INFO L87 Difference]: Start difference. First operand 10995 states and 11743 transitions. Second operand 7 states. [2020-10-27 00:05:51,722 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:05:51,722 INFO L93 Difference]: Finished difference Result 21649 states and 23160 transitions. [2020-10-27 00:05:51,723 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 00:05:51,723 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1514 [2020-10-27 00:05:51,724 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:05:51,771 INFO L225 Difference]: With dead ends: 21649 [2020-10-27 00:05:51,771 INFO L226 Difference]: Without dead ends: 11340 [2020-10-27 00:05:51,792 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 20 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2020-10-27 00:05:51,807 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 11340 states. [2020-10-27 00:05:51,986 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 11340 to 11334. [2020-10-27 00:05:51,986 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 11334 states. [2020-10-27 00:05:52,006 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 11334 states to 11334 states and 12086 transitions. [2020-10-27 00:05:52,006 INFO L78 Accepts]: Start accepts. Automaton has 11334 states and 12086 transitions. Word has length 1514 [2020-10-27 00:05:52,007 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:05:52,007 INFO L481 AbstractCegarLoop]: Abstraction has 11334 states and 12086 transitions. [2020-10-27 00:05:52,008 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:05:52,008 INFO L276 IsEmpty]: Start isEmpty. Operand 11334 states and 12086 transitions. [2020-10-27 00:05:52,054 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1517 [2020-10-27 00:05:52,054 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:05:52,055 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:05:52,055 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 00:05:52,056 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:05:52,056 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:05:52,056 INFO L82 PathProgramCache]: Analyzing trace with hash -1716880696, now seen corresponding path program 1 times [2020-10-27 00:05:52,057 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:05:52,057 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301382307] [2020-10-27 00:05:52,057 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:05:52,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:52,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:52,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1542 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5102 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 476 [2020-10-27 00:05:57,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 132 [2020-10-27 00:05:57,526 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,691 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:05:57,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,717 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:05:57,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:57,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 240 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:57,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:57,830 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 247 [2020-10-27 00:05:57,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:57,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:58,085 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:58,085 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 226 [2020-10-27 00:05:58,085 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:05:58,086 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:58,182 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 472 [2020-10-27 00:05:58,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:05:58,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:05:58,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 130 [2020-10-27 00:05:58,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:58,406 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 601 [2020-10-27 00:05:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:58,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:58,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:58,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:05:58,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:58,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 00:05:58,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 193 [2020-10-27 00:05:58,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:58,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:58,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 796 [2020-10-27 00:05:58,589 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:58,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:58,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:58,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:05:58,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:58,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 106 [2020-10-27 00:05:58,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 271 [2020-10-27 00:05:58,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:58,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:58,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1069 [2020-10-27 00:05:58,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:58,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 124 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:58,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:59,034 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:05:59,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:59,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:59,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:59,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:05:59,080 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1376 [2020-10-27 00:05:59,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:05:59,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:05:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:00,536 INFO L134 CoverageAnalysis]: Checked inductivity of 3715 backedges. 457 proven. 493 refuted. 0 times theorem prover too weak. 2765 trivial. 0 not checked. [2020-10-27 00:06:00,537 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301382307] [2020-10-27 00:06:00,537 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:00,537 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:00,537 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [363418773] [2020-10-27 00:06:00,538 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:00,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:00,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:00,539 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:00,539 INFO L87 Difference]: Start difference. First operand 11334 states and 12086 transitions. Second operand 7 states. [2020-10-27 00:06:06,996 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:06,996 INFO L93 Difference]: Finished difference Result 25045 states and 27010 transitions. [2020-10-27 00:06:06,997 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 00:06:06,998 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1516 [2020-10-27 00:06:06,999 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:07,040 INFO L225 Difference]: With dead ends: 25045 [2020-10-27 00:06:07,041 INFO L226 Difference]: Without dead ends: 14397 [2020-10-27 00:06:07,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 21 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:06:07,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14397 states. [2020-10-27 00:06:07,310 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14397 to 13719. [2020-10-27 00:06:07,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 13719 states. [2020-10-27 00:06:07,335 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13719 states to 13719 states and 14676 transitions. [2020-10-27 00:06:07,336 INFO L78 Accepts]: Start accepts. Automaton has 13719 states and 14676 transitions. Word has length 1516 [2020-10-27 00:06:07,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:07,337 INFO L481 AbstractCegarLoop]: Abstraction has 13719 states and 14676 transitions. [2020-10-27 00:06:07,337 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:07,337 INFO L276 IsEmpty]: Start isEmpty. Operand 13719 states and 14676 transitions. [2020-10-27 00:06:07,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1562 [2020-10-27 00:06:07,385 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:07,386 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:07,386 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 00:06:07,386 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:07,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:07,387 INFO L82 PathProgramCache]: Analyzing trace with hash -1253929346, now seen corresponding path program 1 times [2020-10-27 00:06:07,387 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:07,387 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1431717259] [2020-10-27 00:06:07,388 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:07,696 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:08,219 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:09,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:13,922 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1589 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6168 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 851 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 276 [2020-10-27 00:06:13,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:14,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:14,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 00:06:14,206 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,206 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:14,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:14,241 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,310 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:14,311 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:14,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,418 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:14,447 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,447 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 00:06:14,447 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:14,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:14,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:06:14,471 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:14,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,524 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,524 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:06:14,524 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,524 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:06:14,525 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,525 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:14,525 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:06:14,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:14,603 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:06:14,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:14,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 196 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 190 [2020-10-27 00:06:14,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:14,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 841 [2020-10-27 00:06:14,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:14,855 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:15,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 274 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 276 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 274 [2020-10-27 00:06:15,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:15,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1114 [2020-10-27 00:06:15,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:15,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:15,903 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 310 [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 193 [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:15,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 307 [2020-10-27 00:06:15,905 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:15,905 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:15,988 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-27 00:06:15,991 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:15,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:16,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:16,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 00:06:16,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:16,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 00:06:16,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:16,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:16,005 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:16,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1421 [2020-10-27 00:06:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:16,495 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:16,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:16,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:18,727 INFO L134 CoverageAnalysis]: Checked inductivity of 4233 backedges. 1070 proven. 385 refuted. 0 times theorem prover too weak. 2778 trivial. 0 not checked. [2020-10-27 00:06:18,727 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1431717259] [2020-10-27 00:06:18,728 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:18,728 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:18,728 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1377083236] [2020-10-27 00:06:18,729 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:18,730 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:18,730 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:18,730 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:18,730 INFO L87 Difference]: Start difference. First operand 13719 states and 14676 transitions. Second operand 7 states. [2020-10-27 00:06:23,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:23,451 INFO L93 Difference]: Finished difference Result 27779 states and 29741 transitions. [2020-10-27 00:06:23,452 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:06:23,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1561 [2020-10-27 00:06:23,454 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:23,494 INFO L225 Difference]: With dead ends: 27779 [2020-10-27 00:06:23,494 INFO L226 Difference]: Without dead ends: 14746 [2020-10-27 00:06:23,513 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 00:06:23,527 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 14746 states. [2020-10-27 00:06:23,770 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 14746 to 14734. [2020-10-27 00:06:23,770 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 14734 states. [2020-10-27 00:06:23,800 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 14734 states to 14734 states and 15721 transitions. [2020-10-27 00:06:23,800 INFO L78 Accepts]: Start accepts. Automaton has 14734 states and 15721 transitions. Word has length 1561 [2020-10-27 00:06:23,801 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:23,802 INFO L481 AbstractCegarLoop]: Abstraction has 14734 states and 15721 transitions. [2020-10-27 00:06:23,802 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:23,802 INFO L276 IsEmpty]: Start isEmpty. Operand 14734 states and 15721 transitions. [2020-10-27 00:06:23,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1638 [2020-10-27 00:06:23,849 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:23,850 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:23,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 00:06:23,850 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:23,850 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:23,851 INFO L82 PathProgramCache]: Analyzing trace with hash -870605958, now seen corresponding path program 1 times [2020-10-27 00:06:23,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:23,851 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [264425016] [2020-10-27 00:06:23,851 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:24,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:24,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:25,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:28,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1667 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5082 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 359 [2020-10-27 00:06:29,315 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 222 [2020-10-27 00:06:29,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:29,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:29,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:29,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:29,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:29,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:29,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:29,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:29,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,626 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:29,627 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:29,680 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:29,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:29,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 00:06:29,737 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:29,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:29,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:29,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:29,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:29,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 220 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 220 [2020-10-27 00:06:29,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 574 [2020-10-27 00:06:30,168 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:30,190 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:30,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-27 00:06:30,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:30,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 00:06:30,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:30,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:30,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 133 [2020-10-27 00:06:30,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:30,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 709 [2020-10-27 00:06:30,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:30,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 104 [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:30,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 00:06:30,468 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:30,468 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 853 [2020-10-27 00:06:30,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:30,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,643 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:30,643 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:30,643 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:30,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 995 [2020-10-27 00:06:30,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:30,753 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:30,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:30,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:30,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 82 [2020-10-27 00:06:30,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:30,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:30,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:30,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1105 [2020-10-27 00:06:30,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:30,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:30,958 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:30,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:06:30,960 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:30,961 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 00:06:31,003 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1243 [2020-10-27 00:06:31,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:31,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:31,142 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 00:06:31,143 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:31,143 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:31,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1497 [2020-10-27 00:06:31,273 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:31,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:31,319 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:06:31,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:31,320 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:32,701 INFO L134 CoverageAnalysis]: Checked inductivity of 6017 backedges. 614 proven. 985 refuted. 0 times theorem prover too weak. 4418 trivial. 0 not checked. [2020-10-27 00:06:32,701 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [264425016] [2020-10-27 00:06:32,702 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 00:06:32,702 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 00:06:32,702 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [430084883] [2020-10-27 00:06:32,703 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 00:06:32,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 00:06:32,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 00:06:32,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 00:06:32,703 INFO L87 Difference]: Start difference. First operand 14734 states and 15721 transitions. Second operand 7 states. [2020-10-27 00:06:37,451 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 00:06:37,452 INFO L93 Difference]: Finished difference Result 33521 states and 35925 transitions. [2020-10-27 00:06:37,453 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 00:06:37,453 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 1637 [2020-10-27 00:06:37,453 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 00:06:37,501 INFO L225 Difference]: With dead ends: 33521 [2020-10-27 00:06:37,501 INFO L226 Difference]: Without dead ends: 19473 [2020-10-27 00:06:37,525 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 00:06:37,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19473 states. [2020-10-27 00:06:37,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19473 to 17786. [2020-10-27 00:06:37,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17786 states. [2020-10-27 00:06:37,898 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17786 states to 17786 states and 18989 transitions. [2020-10-27 00:06:37,899 INFO L78 Accepts]: Start accepts. Automaton has 17786 states and 18989 transitions. Word has length 1637 [2020-10-27 00:06:37,900 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 00:06:37,900 INFO L481 AbstractCegarLoop]: Abstraction has 17786 states and 18989 transitions. [2020-10-27 00:06:37,900 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 00:06:37,900 INFO L276 IsEmpty]: Start isEmpty. Operand 17786 states and 18989 transitions. [2020-10-27 00:06:37,948 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 1645 [2020-10-27 00:06:37,948 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 00:06:37,949 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 12, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 11, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 10, 9, 9, 9, 9, 9, 9, 9, 9, 9, 9, 8, 8, 8, 8, 8, 8, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 7, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 00:06:37,949 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 00:06:37,950 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 00:06:37,950 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 00:06:37,951 INFO L82 PathProgramCache]: Analyzing trace with hash 1097320488, now seen corresponding path program 1 times [2020-10-27 00:06:37,951 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 00:06:37,951 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2054039731] [2020-10-27 00:06:37,952 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 00:06:38,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:38,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:38,837 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:39,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:43,391 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:43,391 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 1676 [2020-10-27 00:06:43,391 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5116 [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 726 [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 147 [2020-10-27 00:06:43,392 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:43,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 00:06:43,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:43,667 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:43,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:43,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 00:06:43,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:43,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 00:06:43,676 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:43,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:43,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:43,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 00:06:43,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:43,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:43,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:43,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 248 [2020-10-27 00:06:43,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:43,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 00:06:43,838 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:43,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:43,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:43,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 255 [2020-10-27 00:06:43,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:43,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,017 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 101 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:44,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:44,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,049 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 355 [2020-10-27 00:06:44,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,062 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:44,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:44,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,194 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 517 [2020-10-27 00:06:44,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 130 [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:44,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:44,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:44,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 646 [2020-10-27 00:06:44,294 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,302 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 00:06:44,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 65 [2020-10-27 00:06:44,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,371 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 716 [2020-10-27 00:06:44,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 00:06:44,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 207 [2020-10-27 00:06:44,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 00:06:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 00:06:44,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 00:06:44,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 860 [2020-10-27 00:06:44,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 143 [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 140 [2020-10-27 00:06:44,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:44,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1002 [2020-10-27 00:06:44,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:44,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:44,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:44,949 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 00:06:44,949 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:44,949 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 00:06:44,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 108 [2020-10-27 00:06:44,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:44,950 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:44,984 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1112 [2020-10-27 00:06:45,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:45,036 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:45,090 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 139 [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:45,091 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 136 [2020-10-27 00:06:45,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:45,092 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:45,136 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1250 [2020-10-27 00:06:45,187 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:45,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 255 [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 95 [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:45,283 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 252 [2020-10-27 00:06:45,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:45,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 00:06:45,517 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1504 [2020-10-27 00:06:45,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 00:06:45,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 00:06:45,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 00:06:45,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 117 [2020-10-27 00:06:45,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 00:06:45,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 00:06:45,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 00:06:45,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 00:06:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 114 [2020-10-27 00:06:45,597 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 00:06:45,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0