/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=DEEPEST --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/recursive/gcd02.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 22:28:50,906 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 22:28:50,909 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 22:28:50,947 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 22:28:50,947 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 22:28:50,949 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 22:28:50,951 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 22:28:50,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 22:28:50,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 22:28:50,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 22:28:50,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 22:28:50,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 22:28:50,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 22:28:50,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 22:28:50,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 22:28:50,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 22:28:50,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 22:28:50,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 22:28:50,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 22:28:50,970 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 22:28:50,972 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 22:28:50,974 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 22:28:50,975 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 22:28:50,976 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 22:28:50,998 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 22:28:50,999 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 22:28:50,999 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 22:28:51,000 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 22:28:51,001 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 22:28:51,002 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 22:28:51,002 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 22:28:51,003 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 22:28:51,004 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 22:28:51,005 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 22:28:51,007 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 22:28:51,007 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 22:28:51,008 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 22:28:51,008 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 22:28:51,008 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 22:28:51,009 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 22:28:51,010 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 22:28:51,011 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 22:28:51,039 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 22:28:51,039 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 22:28:51,041 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 22:28:51,041 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 22:28:51,041 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 22:28:51,042 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 22:28:51,042 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 22:28:51,042 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 22:28:51,042 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 22:28:51,043 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 22:28:51,043 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 22:28:51,043 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 22:28:51,043 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 22:28:51,043 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 22:28:51,044 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 22:28:51,044 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 22:28:51,044 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 22:28:51,044 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 22:28:51,045 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 22:28:51,045 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 22:28:51,045 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 22:28:51,045 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 22:28:51,046 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 22:28:51,046 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 22:28:51,046 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 22:28:51,046 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 22:28:51,046 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 22:28:51,047 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 22:28:51,047 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 22:28:51,047 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 22:28:51,456 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 22:28:51,485 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 22:28:51,488 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 22:28:51,490 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 22:28:51,490 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 22:28:51,492 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd02.c [2020-10-27 22:28:51,577 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/340a08208/8b5a08093ec54c5f9ee4b2017a8d284c/FLAG346b5141f [2020-10-27 22:28:52,151 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 22:28:52,152 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd02.c [2020-10-27 22:28:52,160 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/340a08208/8b5a08093ec54c5f9ee4b2017a8d284c/FLAG346b5141f [2020-10-27 22:28:52,564 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/340a08208/8b5a08093ec54c5f9ee4b2017a8d284c [2020-10-27 22:28:52,568 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 22:28:52,577 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 22:28:52,582 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 22:28:52,582 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 22:28:52,586 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 22:28:52,588 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,597 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@26f2bce8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52, skipping insertion in model container [2020-10-27 22:28:52,597 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,608 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 22:28:52,630 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 22:28:52,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:28:52,887 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 22:28:52,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 22:28:52,942 INFO L208 MainTranslator]: Completed translation [2020-10-27 22:28:52,944 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52 WrapperNode [2020-10-27 22:28:52,945 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 22:28:52,948 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 22:28:52,948 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 22:28:52,948 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 22:28:52,964 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,966 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,976 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,977 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,994 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:52,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:53,005 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (1/1) ... [2020-10-27 22:28:53,009 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 22:28:53,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 22:28:53,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 22:28:53,012 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 22:28:53,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (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 22:28:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 22:28:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 22:28:53,089 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 22:28:53,090 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-27 22:28:53,090 INFO L138 BoogieDeclarations]: Found implementation of procedure divides [2020-10-27 22:28:53,090 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 22:28:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 22:28:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 22:28:53,090 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure divides [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 22:28:53,091 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 22:28:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 22:28:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 22:28:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 22:28:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 22:28:53,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 22:28:53,449 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 22:28:53,449 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 22:28:53,451 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:28:53 BoogieIcfgContainer [2020-10-27 22:28:53,451 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 22:28:53,453 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 22:28:53,453 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 22:28:53,457 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 22:28:53,457 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 10:28:52" (1/3) ... [2020-10-27 22:28:53,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bd3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:28:53, skipping insertion in model container [2020-10-27 22:28:53,458 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 10:28:52" (2/3) ... [2020-10-27 22:28:53,458 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@14bd3b64 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 10:28:53, skipping insertion in model container [2020-10-27 22:28:53,459 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 10:28:53" (3/3) ... [2020-10-27 22:28:53,460 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd02.c [2020-10-27 22:28:53,474 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 22:28:53,479 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 22:28:53,492 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 22:28:53,520 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 22:28:53,520 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 22:28:53,521 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 22:28:53,521 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 22:28:53,521 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 22:28:53,521 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 22:28:53,521 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 22:28:53,521 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 22:28:53,541 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-10-27 22:28:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-27 22:28:53,546 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:53,547 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:53,548 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:53,554 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:53,554 INFO L82 PathProgramCache]: Analyzing trace with hash -563936020, now seen corresponding path program 1 times [2020-10-27 22:28:53,564 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:53,565 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [111554417] [2020-10-27 22:28:53,565 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:53,714 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:53,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:53,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:54,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:54,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 24 [2020-10-27 22:28:54,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 22:28:54,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 620 [2020-10-27 22:28:54,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:54,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 22:28:54,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 22:28:54,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:28:54,537 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:54,548 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:54,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:54,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:54,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:54,571 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 22:28:54,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:54,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:54,572 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:54,572 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:54,582 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 22:28:54,583 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [111554417] [2020-10-27 22:28:54,585 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:54,585 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 22:28:54,586 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1580846762] [2020-10-27 22:28:54,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 22:28:54,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:54,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 22:28:54,608 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 22:28:54,610 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 6 states. [2020-10-27 22:28:55,075 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:55,076 INFO L93 Difference]: Finished difference Result 84 states and 114 transitions. [2020-10-27 22:28:55,076 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:28:55,078 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-27 22:28:55,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:55,087 INFO L225 Difference]: With dead ends: 84 [2020-10-27 22:28:55,088 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 22:28:55,092 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=28, Invalid=62, Unknown=0, NotChecked=0, Total=90 [2020-10-27 22:28:55,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 22:28:55,138 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 45. [2020-10-27 22:28:55,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 22:28:55,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 55 transitions. [2020-10-27 22:28:55,144 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 55 transitions. Word has length 14 [2020-10-27 22:28:55,144 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:55,144 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 55 transitions. [2020-10-27 22:28:55,144 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 22:28:55,145 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 55 transitions. [2020-10-27 22:28:55,146 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 22:28:55,146 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:55,146 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:55,146 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 22:28:55,147 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:55,147 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:55,148 INFO L82 PathProgramCache]: Analyzing trace with hash -604465206, now seen corresponding path program 1 times [2020-10-27 22:28:55,148 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:55,148 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1818701396] [2020-10-27 22:28:55,148 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:55,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:55,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:55,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:55,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:55,473 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:55,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:28:55,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:55,475 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 305 [2020-10-27 22:28:55,475 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:28:55,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:55,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:28:55,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:55,570 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:55,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:55,587 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:55,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:55,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:28:55,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:55,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:55,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:55,589 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:55,599 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:28:55,600 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1818701396] [2020-10-27 22:28:55,600 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:55,600 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 22:28:55,600 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [972516811] [2020-10-27 22:28:55,603 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:28:55,603 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:55,604 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:28:55,606 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:28:55,607 INFO L87 Difference]: Start difference. First operand 45 states and 55 transitions. Second operand 7 states. [2020-10-27 22:28:56,044 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:56,045 INFO L93 Difference]: Finished difference Result 64 states and 81 transitions. [2020-10-27 22:28:56,045 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 22:28:56,045 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 19 [2020-10-27 22:28:56,046 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:56,049 INFO L225 Difference]: With dead ends: 64 [2020-10-27 22:28:56,050 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 22:28:56,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=49, Invalid=83, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:28:56,051 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 22:28:56,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 55. [2020-10-27 22:28:56,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-10-27 22:28:56,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 68 transitions. [2020-10-27 22:28:56,069 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 68 transitions. Word has length 19 [2020-10-27 22:28:56,070 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:56,070 INFO L481 AbstractCegarLoop]: Abstraction has 55 states and 68 transitions. [2020-10-27 22:28:56,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:28:56,070 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 68 transitions. [2020-10-27 22:28:56,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-10-27 22:28:56,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:56,071 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:56,072 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 22:28:56,072 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:56,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:56,073 INFO L82 PathProgramCache]: Analyzing trace with hash -516730711, now seen corresponding path program 1 times [2020-10-27 22:28:56,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:56,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1906815659] [2020-10-27 22:28:56,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:56,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:56,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:56,131 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:56,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:56,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:56,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 31 [2020-10-27 22:28:56,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:28:56,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 618 [2020-10-27 22:28:56,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:28:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 22:28:56,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:56,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:56,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:56,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:56,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:56,818 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:56,819 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:56,819 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:56,819 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:28:56,819 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:56,819 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:56,820 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:56,820 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:56,824 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 22:28:56,825 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1906815659] [2020-10-27 22:28:56,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:56,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 22:28:56,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1278742332] [2020-10-27 22:28:56,828 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 22:28:56,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:56,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 22:28:56,832 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2020-10-27 22:28:56,832 INFO L87 Difference]: Start difference. First operand 55 states and 68 transitions. Second operand 8 states. [2020-10-27 22:28:57,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:57,382 INFO L93 Difference]: Finished difference Result 69 states and 89 transitions. [2020-10-27 22:28:57,383 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:28:57,383 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-10-27 22:28:57,384 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:57,385 INFO L225 Difference]: With dead ends: 69 [2020-10-27 22:28:57,385 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 22:28:57,386 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=76, Invalid=134, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:28:57,387 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 22:28:57,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 54. [2020-10-27 22:28:57,400 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 22:28:57,401 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 66 transitions. [2020-10-27 22:28:57,402 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 66 transitions. Word has length 19 [2020-10-27 22:28:57,402 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:57,402 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 66 transitions. [2020-10-27 22:28:57,402 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 22:28:57,402 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 66 transitions. [2020-10-27 22:28:57,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 22:28:57,404 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:57,404 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] [2020-10-27 22:28:57,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 22:28:57,405 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:57,405 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:57,405 INFO L82 PathProgramCache]: Analyzing trace with hash -398892426, now seen corresponding path program 1 times [2020-10-27 22:28:57,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:57,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1192499466] [2020-10-27 22:28:57,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:57,417 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:57,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:57,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:57,458 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:57,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:57,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 22:28:58,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:28:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 986 [2020-10-27 22:28:58,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:28:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 28 [2020-10-27 22:28:58,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:28:58,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:58,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:58,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:58,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:58,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:58,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:28:58,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:58,470 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,470 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:58,470 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:58,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:58,471 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:58,471 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,473 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:28:58,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:58,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:58,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:28:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:58,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:28:58,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,494 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 22:28:58,495 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1192499466] [2020-10-27 22:28:58,495 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:58,495 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 22:28:58,496 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779119374] [2020-10-27 22:28:58,496 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 22:28:58,497 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:58,497 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 22:28:58,498 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 22:28:58,498 INFO L87 Difference]: Start difference. First operand 54 states and 66 transitions. Second operand 5 states. [2020-10-27 22:28:58,702 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:58,703 INFO L93 Difference]: Finished difference Result 61 states and 73 transitions. [2020-10-27 22:28:58,703 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 22:28:58,703 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2020-10-27 22:28:58,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:58,705 INFO L225 Difference]: With dead ends: 61 [2020-10-27 22:28:58,705 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 22:28:58,706 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:28:58,706 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 22:28:58,716 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 22:28:58,716 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 22:28:58,717 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 22:28:58,717 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 25 [2020-10-27 22:28:58,718 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:58,718 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 22:28:58,718 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 22:28:58,718 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 22:28:58,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 22:28:58,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:58,720 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] [2020-10-27 22:28:58,720 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 22:28:58,720 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:58,721 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:58,721 INFO L82 PathProgramCache]: Analyzing trace with hash -1624251770, now seen corresponding path program 1 times [2020-10-27 22:28:58,721 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:58,721 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [689701483] [2020-10-27 22:28:58,722 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:58,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,845 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,846 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 22:28:58,846 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,846 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 22:28:58,846 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:28:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:28:58,847 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:28:58,847 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,893 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:58,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:58,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:58,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:28:58,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:58,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:58,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,938 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:28:58,940 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:58,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:58,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:58,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:58,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:58,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:28:58,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:28:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:28:58,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:28:58,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:58,980 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 22:28:58,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [689701483] [2020-10-27 22:28:58,981 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 22:28:58,981 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 22:28:58,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [435679777] [2020-10-27 22:28:58,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 22:28:58,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:58,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 22:28:58,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2020-10-27 22:28:58,983 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 9 states. [2020-10-27 22:28:59,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:28:59,493 INFO L93 Difference]: Finished difference Result 74 states and 92 transitions. [2020-10-27 22:28:59,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 22:28:59,494 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-27 22:28:59,494 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:28:59,496 INFO L225 Difference]: With dead ends: 74 [2020-10-27 22:28:59,496 INFO L226 Difference]: Without dead ends: 69 [2020-10-27 22:28:59,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=167, Unknown=0, NotChecked=0, Total=210 [2020-10-27 22:28:59,497 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-10-27 22:28:59,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 62. [2020-10-27 22:28:59,511 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 22:28:59,512 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 76 transitions. [2020-10-27 22:28:59,513 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 76 transitions. Word has length 26 [2020-10-27 22:28:59,513 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:28:59,513 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 76 transitions. [2020-10-27 22:28:59,513 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 22:28:59,513 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 76 transitions. [2020-10-27 22:28:59,515 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-10-27 22:28:59,515 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:28:59,516 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:28:59,516 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 22:28:59,516 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:28:59,516 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:28:59,517 INFO L82 PathProgramCache]: Analyzing trace with hash 1980503842, now seen corresponding path program 1 times [2020-10-27 22:28:59,517 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:28:59,517 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1919908131] [2020-10-27 22:28:59,517 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:28:59,528 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:59,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:59,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:59,641 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 46 [2020-10-27 22:28:59,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:59,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 111 [2020-10-27 22:28:59,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 22:28:59,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:28:59,642 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:59,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:28:59,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:59,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:59,695 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:59,696 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:28:59,696 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:59,696 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:28:59,696 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:59,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:59,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:59,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:59,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:28:59,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:59,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:59,709 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:59,709 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:28:59,709 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:28:59,710 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:59,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:28:59,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:59,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:59,763 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 18 [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:28:59,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:59,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 22:28:59,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:59,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:28:59,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:28:59,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:28:59,791 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 3 [2020-10-27 22:28:59,792 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:28:59,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 5 [2020-10-27 22:28:59,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:28:59,805 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:28:59,806 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1919908131] [2020-10-27 22:28:59,806 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:28:59,806 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 22:28:59,806 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1667846919] [2020-10-27 22:28:59,807 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 22:28:59,807 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:28:59,807 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 22:28:59,808 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 22:28:59,808 INFO L87 Difference]: Start difference. First operand 62 states and 76 transitions. Second operand 7 states. [2020-10-27 22:29:00,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:00,109 INFO L93 Difference]: Finished difference Result 70 states and 85 transitions. [2020-10-27 22:29:00,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 22:29:00,109 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 32 [2020-10-27 22:29:00,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:00,111 INFO L225 Difference]: With dead ends: 70 [2020-10-27 22:29:00,111 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 22:29:00,112 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:29:00,112 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 22:29:00,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 60. [2020-10-27 22:29:00,140 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-27 22:29:00,141 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 73 transitions. [2020-10-27 22:29:00,142 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 73 transitions. Word has length 32 [2020-10-27 22:29:00,142 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:00,142 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 73 transitions. [2020-10-27 22:29:00,142 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 22:29:00,142 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 73 transitions. [2020-10-27 22:29:00,144 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 22:29:00,144 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:00,144 INFO L422 BasicCegarLoop]: trace histogram [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 22:29:00,145 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 22:29:00,145 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:00,145 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:00,145 INFO L82 PathProgramCache]: Analyzing trace with hash 999161632, now seen corresponding path program 1 times [2020-10-27 22:29:00,146 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:00,146 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1213774895] [2020-10-27 22:29:00,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:00,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:00,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:00,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:00,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 22:29:00,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:00,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-27 22:29:00,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:00,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:00,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 22:29:00,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:00,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:00,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:00,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:00,382 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:00,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:00,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:00,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:00,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:00,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:00,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:00,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:00,398 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:00,398 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:00,398 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:29:00,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:00,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:00,399 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:00,399 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:00,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 16 [2020-10-27 22:29:00,422 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:00,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:00,458 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:00,458 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:00,459 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:00,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:00,531 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:00,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:00,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:00,553 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:00,553 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:00,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:00,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:29:00,554 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:00,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:00,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:00,624 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 22:29:00,625 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1213774895] [2020-10-27 22:29:00,625 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:00,625 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:29:00,625 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [633153423] [2020-10-27 22:29:00,626 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:29:00,626 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:00,626 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:29:00,627 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:29:00,627 INFO L87 Difference]: Start difference. First operand 60 states and 73 transitions. Second operand 11 states. [2020-10-27 22:29:01,296 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:01,297 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-27 22:29:01,297 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 22:29:01,297 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 33 [2020-10-27 22:29:01,298 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:01,299 INFO L225 Difference]: With dead ends: 69 [2020-10-27 22:29:01,299 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 22:29:01,300 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=58, Invalid=248, Unknown=0, NotChecked=0, Total=306 [2020-10-27 22:29:01,300 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 22:29:01,309 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 54. [2020-10-27 22:29:01,310 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 22:29:01,311 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-27 22:29:01,311 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 33 [2020-10-27 22:29:01,311 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:01,311 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-27 22:29:01,311 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:29:01,311 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-27 22:29:01,313 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:29:01,313 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:01,313 INFO L422 BasicCegarLoop]: trace histogram [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 22:29:01,313 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 22:29:01,313 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:01,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:01,314 INFO L82 PathProgramCache]: Analyzing trace with hash 1831946258, now seen corresponding path program 1 times [2020-10-27 22:29:01,314 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:01,317 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1076546327] [2020-10-27 22:29:01,317 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:01,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:01,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:01,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:01,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:01,482 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:01,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:01,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,409 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:02,410 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:29:02,410 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:29:02,410 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1074 [2020-10-27 22:29:02,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:29:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:02,411 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:29:02,411 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:02,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:02,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:02,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:02,471 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:02,471 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:02,471 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:02,471 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:02,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:02,472 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:02,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:02,478 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:02,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,520 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,609 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:02,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:02,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:02,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 22:29:02,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:02,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:02,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:02,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:02,658 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:02,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:02,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,680 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:02,680 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:02,681 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:02,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:02,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:29:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:02,703 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:02,710 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:02,710 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:02,710 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:02,710 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:29:02,710 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:02,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:02,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:02,714 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 22:29:02,750 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2020-10-27 22:29:02,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1076546327] [2020-10-27 22:29:02,752 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:02,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:29:02,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1415882599] [2020-10-27 22:29:02,753 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:29:02,753 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:02,753 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:29:02,754 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:29:02,754 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 12 states. [2020-10-27 22:29:03,571 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:03,571 INFO L93 Difference]: Finished difference Result 79 states and 99 transitions. [2020-10-27 22:29:03,572 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:29:03,572 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 34 [2020-10-27 22:29:03,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:03,573 INFO L225 Difference]: With dead ends: 79 [2020-10-27 22:29:03,574 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 22:29:03,575 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 29 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=344, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:29:03,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 22:29:03,587 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 64. [2020-10-27 22:29:03,587 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 64 states. [2020-10-27 22:29:03,588 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 78 transitions. [2020-10-27 22:29:03,588 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 78 transitions. Word has length 34 [2020-10-27 22:29:03,589 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:03,589 INFO L481 AbstractCegarLoop]: Abstraction has 64 states and 78 transitions. [2020-10-27 22:29:03,589 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:29:03,589 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 78 transitions. [2020-10-27 22:29:03,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 22:29:03,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:03,591 INFO L422 BasicCegarLoop]: trace histogram [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 22:29:03,591 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 22:29:03,591 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:03,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:03,592 INFO L82 PathProgramCache]: Analyzing trace with hash -1148189006, now seen corresponding path program 1 times [2020-10-27 22:29:03,592 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:03,592 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024899956] [2020-10-27 22:29:03,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:03,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:03,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:03,790 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:03,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 22:29:03,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:03,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-27 22:29:03,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:29:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:03,791 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 24 [2020-10-27 22:29:03,791 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:03,850 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:03,853 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:03,854 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:03,858 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:03,858 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:03,858 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:03,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:29:03,859 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:03,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:03,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:29:03,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:03,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:03,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:03,908 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:03,908 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:03,908 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:03,908 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:29:03,909 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:29:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:03,909 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:03,909 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:03,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:03,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:03,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:03,966 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:03,966 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:03,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:03,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 22:29:03,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:03,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:03,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:03,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:29:03,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:03,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:04,000 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:04,000 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:04,001 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:04,001 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:29:04,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:04,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:04,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:04,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:04,037 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:29:04,038 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024899956] [2020-10-27 22:29:04,038 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:04,038 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 22:29:04,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464337318] [2020-10-27 22:29:04,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 22:29:04,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:04,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 22:29:04,041 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 22:29:04,041 INFO L87 Difference]: Start difference. First operand 64 states and 78 transitions. Second operand 11 states. [2020-10-27 22:29:04,654 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:04,654 INFO L93 Difference]: Finished difference Result 87 states and 110 transitions. [2020-10-27 22:29:04,655 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:29:04,655 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-27 22:29:04,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:04,656 INFO L225 Difference]: With dead ends: 87 [2020-10-27 22:29:04,657 INFO L226 Difference]: Without dead ends: 82 [2020-10-27 22:29:04,657 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=62, Invalid=280, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:29:04,658 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-10-27 22:29:04,669 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 68. [2020-10-27 22:29:04,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 22:29:04,671 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 84 transitions. [2020-10-27 22:29:04,671 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 84 transitions. Word has length 34 [2020-10-27 22:29:04,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:04,671 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 84 transitions. [2020-10-27 22:29:04,671 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 22:29:04,672 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 84 transitions. [2020-10-27 22:29:04,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 22:29:04,673 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:04,673 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:04,674 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 22:29:04,674 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:04,674 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:04,675 INFO L82 PathProgramCache]: Analyzing trace with hash -2142927852, now seen corresponding path program 1 times [2020-10-27 22:29:04,675 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:04,675 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1284147851] [2020-10-27 22:29:04,675 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:04,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:04,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:04,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:04,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:29:04,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:04,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 22:29:04,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:04,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 22:29:04,984 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:05,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:05,047 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:05,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:29:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:05,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:05,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:05,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:05,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:05,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:05,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:05,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:05,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 22:29:05,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:29:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:05,122 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:05,122 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:05,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:05,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:05,188 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:05,188 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:05,188 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:29:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,226 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:29:05,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:05,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:05,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:05,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:05,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:05,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:29:05,262 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:05,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:05,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:05,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:05,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:05,322 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:05,323 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:05,323 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:05,323 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:29:05,323 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:05,323 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:05,324 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:05,324 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:05,358 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 2 proven. 4 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 22:29:05,359 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1284147851] [2020-10-27 22:29:05,359 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:05,359 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 22:29:05,359 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1219723183] [2020-10-27 22:29:05,361 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 22:29:05,361 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:05,364 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 22:29:05,364 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 22:29:05,365 INFO L87 Difference]: Start difference. First operand 68 states and 84 transitions. Second operand 13 states. [2020-10-27 22:29:06,236 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:06,236 INFO L93 Difference]: Finished difference Result 94 states and 121 transitions. [2020-10-27 22:29:06,237 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 22:29:06,237 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 41 [2020-10-27 22:29:06,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:06,239 INFO L225 Difference]: With dead ends: 94 [2020-10-27 22:29:06,239 INFO L226 Difference]: Without dead ends: 89 [2020-10-27 22:29:06,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=74, Invalid=388, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:29:06,243 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2020-10-27 22:29:06,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 78. [2020-10-27 22:29:06,267 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-10-27 22:29:06,269 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 99 transitions. [2020-10-27 22:29:06,270 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 99 transitions. Word has length 41 [2020-10-27 22:29:06,270 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:06,270 INFO L481 AbstractCegarLoop]: Abstraction has 78 states and 99 transitions. [2020-10-27 22:29:06,270 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 22:29:06,271 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 99 transitions. [2020-10-27 22:29:06,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-10-27 22:29:06,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:06,274 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:06,274 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 22:29:06,274 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:06,275 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:06,275 INFO L82 PathProgramCache]: Analyzing trace with hash -131001996, now seen corresponding path program 1 times [2020-10-27 22:29:06,275 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:06,275 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1368404187] [2020-10-27 22:29:06,275 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:06,289 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,556 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,556 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:06,557 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 22:29:06,558 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:06,616 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:06,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:06,622 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:06,622 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:06,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 22:29:06,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:06,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:06,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:06,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,741 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:06,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:29:06,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:06,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:06,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 24 [2020-10-27 22:29:06,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:06,788 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:06,789 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:06,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:06,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:06,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:06,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:06,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:06,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:06,884 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:29:06,884 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1368404187] [2020-10-27 22:29:06,885 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:06,885 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 22:29:06,885 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1196912495] [2020-10-27 22:29:06,886 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 22:29:06,886 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:06,886 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 22:29:06,887 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=110, Unknown=0, NotChecked=0, Total=132 [2020-10-27 22:29:06,887 INFO L87 Difference]: Start difference. First operand 78 states and 99 transitions. Second operand 12 states. [2020-10-27 22:29:07,514 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:07,515 INFO L93 Difference]: Finished difference Result 90 states and 114 transitions. [2020-10-27 22:29:07,515 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 22:29:07,515 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 41 [2020-10-27 22:29:07,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:07,516 INFO L225 Difference]: With dead ends: 90 [2020-10-27 22:29:07,517 INFO L226 Difference]: Without dead ends: 80 [2020-10-27 22:29:07,518 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=67, Invalid=313, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:29:07,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2020-10-27 22:29:07,534 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 77. [2020-10-27 22:29:07,534 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 22:29:07,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 97 transitions. [2020-10-27 22:29:07,536 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 97 transitions. Word has length 41 [2020-10-27 22:29:07,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:07,537 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 97 transitions. [2020-10-27 22:29:07,537 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 22:29:07,537 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 97 transitions. [2020-10-27 22:29:07,539 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 22:29:07,540 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:07,540 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 22:29:07,540 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 22:29:07,540 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:07,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:07,541 INFO L82 PathProgramCache]: Analyzing trace with hash 705700454, now seen corresponding path program 1 times [2020-10-27 22:29:07,541 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:07,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2133922728] [2020-10-27 22:29:07,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:07,555 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:07,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,844 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,880 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:07,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:09,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:29:09,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:29:09,715 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2156 [2020-10-27 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:29:09,716 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:09,769 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:09,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:09,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,777 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:09,777 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:09,777 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:09,778 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:09,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:09,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:09,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,896 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,955 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:09,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,026 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1239 [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:29:11,027 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:11,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:11,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:11,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:11,092 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:11,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:11,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:11,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:11,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 22:29:11,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:11,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:11,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:11,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:11,327 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:11,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:11,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:11,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:29:11,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:11,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:11,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:11,385 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:29:11,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:11,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:11,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:11,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:11,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:11,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:29:11,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:11,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:11,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:11,448 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 7 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 22:29:11,449 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2133922728] [2020-10-27 22:29:11,449 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:11,449 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:29:11,449 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [523865043] [2020-10-27 22:29:11,450 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:29:11,450 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:11,451 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:29:11,451 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:29:11,451 INFO L87 Difference]: Start difference. First operand 77 states and 97 transitions. Second operand 16 states. [2020-10-27 22:29:12,456 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 46 [2020-10-27 22:29:12,983 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:12,984 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2020-10-27 22:29:12,984 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:29:12,984 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-27 22:29:12,984 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:12,986 INFO L225 Difference]: With dead ends: 107 [2020-10-27 22:29:12,987 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 22:29:12,988 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=118, Invalid=638, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:29:12,989 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 22:29:13,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 80. [2020-10-27 22:29:13,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 80 states. [2020-10-27 22:29:13,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 102 transitions. [2020-10-27 22:29:13,008 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 102 transitions. Word has length 42 [2020-10-27 22:29:13,009 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:13,009 INFO L481 AbstractCegarLoop]: Abstraction has 80 states and 102 transitions. [2020-10-27 22:29:13,009 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:29:13,009 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 102 transitions. [2020-10-27 22:29:13,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 22:29:13,012 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:13,012 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2020-10-27 22:29:13,012 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 22:29:13,012 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:13,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:13,013 INFO L82 PathProgramCache]: Analyzing trace with hash -580332890, now seen corresponding path program 2 times [2020-10-27 22:29:13,013 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:13,013 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [524161260] [2020-10-27 22:29:13,013 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:13,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:13,033 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:13,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:14,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 22:29:14,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 22:29:14,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1751 [2020-10-27 22:29:14,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:29:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:14,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 22:29:14,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:14,829 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:14,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:14,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:14,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:14,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:14,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:14,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:14,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:14,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:14,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:14,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:14,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,871 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:14,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:15,210 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:15,210 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:15,210 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:15,211 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:15,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:15,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:15,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:15,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:15,311 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:15,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:15,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:15,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:15,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:15,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:15,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:15,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:15,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:15,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:29:15,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:15,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:15,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:15,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:15,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:29:15,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:15,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:15,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:15,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:15,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:15,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:29:15,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:15,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:15,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:15,491 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 2 proven. 11 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 22:29:15,491 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [524161260] [2020-10-27 22:29:15,491 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:15,491 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 22:29:15,492 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1084236735] [2020-10-27 22:29:15,492 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 22:29:15,492 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:15,493 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 22:29:15,493 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=207, Unknown=0, NotChecked=0, Total=240 [2020-10-27 22:29:15,493 INFO L87 Difference]: Start difference. First operand 80 states and 102 transitions. Second operand 16 states. [2020-10-27 22:29:16,623 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:16,624 INFO L93 Difference]: Finished difference Result 107 states and 140 transitions. [2020-10-27 22:29:16,624 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:29:16,624 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 42 [2020-10-27 22:29:16,625 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:16,626 INFO L225 Difference]: With dead ends: 107 [2020-10-27 22:29:16,626 INFO L226 Difference]: Without dead ends: 102 [2020-10-27 22:29:16,627 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=117, Invalid=585, Unknown=0, NotChecked=0, Total=702 [2020-10-27 22:29:16,628 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2020-10-27 22:29:16,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 85. [2020-10-27 22:29:16,642 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 22:29:16,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-27 22:29:16,645 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 42 [2020-10-27 22:29:16,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:16,646 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-27 22:29:16,646 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 22:29:16,646 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-27 22:29:16,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 22:29:16,647 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:16,648 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:16,648 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 22:29:16,648 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:16,648 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:16,649 INFO L82 PathProgramCache]: Analyzing trace with hash -951636832, now seen corresponding path program 2 times [2020-10-27 22:29:16,649 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:16,653 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [752264722] [2020-10-27 22:29:16,654 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:16,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:16,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,895 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,947 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:16,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:17,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:18,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1882 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:29:18,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:18,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:18,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:18,607 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:18,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:18,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:18,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:18,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:18,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:18,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:18,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:18,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:18,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,676 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:18,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 375 [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:18,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:18,996 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:18,996 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:19,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:19,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:19,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:19,096 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:19,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:19,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:19,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:19,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:19,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:19,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:19,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 9 [2020-10-27 22:29:19,219 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:29:19,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:19,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:19,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:19,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:19,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:19,245 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:19,293 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:19,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:19,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:19,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:19,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:19,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:19,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:19,367 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 0 proven. 17 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:29:19,367 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [752264722] [2020-10-27 22:29:19,367 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:19,368 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:29:19,369 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1021361261] [2020-10-27 22:29:19,370 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:29:19,370 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:19,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:29:19,371 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:29:19,371 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 17 states. [2020-10-27 22:29:20,941 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:20,942 INFO L93 Difference]: Finished difference Result 116 states and 152 transitions. [2020-10-27 22:29:20,942 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:29:20,942 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-27 22:29:20,943 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:20,944 INFO L225 Difference]: With dead ends: 116 [2020-10-27 22:29:20,944 INFO L226 Difference]: Without dead ends: 111 [2020-10-27 22:29:20,945 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 66 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=123, Invalid=689, Unknown=0, NotChecked=0, Total=812 [2020-10-27 22:29:20,945 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2020-10-27 22:29:20,957 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 85. [2020-10-27 22:29:20,957 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-10-27 22:29:20,958 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 109 transitions. [2020-10-27 22:29:20,958 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 109 transitions. Word has length 49 [2020-10-27 22:29:20,958 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:20,958 INFO L481 AbstractCegarLoop]: Abstraction has 85 states and 109 transitions. [2020-10-27 22:29:20,958 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:29:20,959 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 109 transitions. [2020-10-27 22:29:20,959 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-10-27 22:29:20,959 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:20,960 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:20,960 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 22:29:20,960 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:20,960 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:20,961 INFO L82 PathProgramCache]: Analyzing trace with hash 62923584, now seen corresponding path program 1 times [2020-10-27 22:29:20,961 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:20,961 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1190926606] [2020-10-27 22:29:20,961 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:20,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:20,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,198 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:21,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,630 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 67 [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1657 [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:29:22,631 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:22,632 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-27 22:29:22,632 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:22,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:22,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:22,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:22,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:22,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:29:22,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:22,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:22,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:22,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:22,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:22,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,768 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:22,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:22,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 269 [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:22,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:22,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:23,017 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:23,020 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:23,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,221 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:23,221 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:23,221 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:23,221 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 199 [2020-10-27 22:29:23,222 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:23,222 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:23,222 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:23,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:23,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:23,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,294 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:23,294 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:23,294 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:23,294 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:29:23,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:29:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:23,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:23,295 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:23,372 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:29:23,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:23,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:23,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:23,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:23,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:23,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:23,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:23,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:23,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:23,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:23,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:23,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:29:23,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:23,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:23,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:23,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:23,498 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 7 proven. 8 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:29:23,498 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1190926606] [2020-10-27 22:29:23,499 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:23,499 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:29:23,499 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1704965191] [2020-10-27 22:29:23,500 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:29:23,500 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:23,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:29:23,501 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=235, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:29:23,501 INFO L87 Difference]: Start difference. First operand 85 states and 109 transitions. Second operand 17 states. [2020-10-27 22:29:24,691 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:24,691 INFO L93 Difference]: Finished difference Result 126 states and 166 transitions. [2020-10-27 22:29:24,692 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:29:24,692 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 49 [2020-10-27 22:29:24,692 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:24,694 INFO L225 Difference]: With dead ends: 126 [2020-10-27 22:29:24,694 INFO L226 Difference]: Without dead ends: 121 [2020-10-27 22:29:24,697 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=127, Invalid=685, Unknown=0, NotChecked=0, Total=812 [2020-10-27 22:29:24,698 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-10-27 22:29:24,711 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 102. [2020-10-27 22:29:24,711 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 102 states. [2020-10-27 22:29:24,712 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 135 transitions. [2020-10-27 22:29:24,712 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 135 transitions. Word has length 49 [2020-10-27 22:29:24,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:24,713 INFO L481 AbstractCegarLoop]: Abstraction has 102 states and 135 transitions. [2020-10-27 22:29:24,713 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:29:24,714 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 135 transitions. [2020-10-27 22:29:24,715 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-10-27 22:29:24,715 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:24,715 INFO L422 BasicCegarLoop]: trace histogram [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 22:29:24,715 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 22:29:24,716 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:24,716 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:24,716 INFO L82 PathProgramCache]: Analyzing trace with hash -1871060648, now seen corresponding path program 2 times [2020-10-27 22:29:24,716 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:24,716 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2081814001] [2020-10-27 22:29:24,717 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:24,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:24,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 76 [2020-10-27 22:29:25,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 346 [2020-10-27 22:29:25,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 22:29:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:25,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 22:29:25,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,148 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:25,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,157 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,157 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:25,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:25,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,162 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:25,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,234 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:25,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:25,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:25,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:25,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,375 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,390 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,390 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:25,390 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:29:25,391 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:25,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 32 [2020-10-27 22:29:25,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,481 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,482 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 22:29:25,482 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,482 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 22:29:25,482 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 22:29:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:25,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 22:29:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,532 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:25,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:25,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:29:25,561 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,561 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:29:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 22:29:25,562 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,643 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:25,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:25,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:25,668 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:25,669 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:25,669 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:25,669 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:29:25,669 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:25,669 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:25,670 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:25,670 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:25,771 INFO L134 CoverageAnalysis]: Checked inductivity of 33 backedges. 4 proven. 18 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 22:29:25,771 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2081814001] [2020-10-27 22:29:25,774 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:25,774 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:29:25,774 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [475209029] [2020-10-27 22:29:25,775 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:29:25,775 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:25,776 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:29:25,776 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:29:25,776 INFO L87 Difference]: Start difference. First operand 102 states and 135 transitions. Second operand 17 states. [2020-10-27 22:29:26,893 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:26,893 INFO L93 Difference]: Finished difference Result 122 states and 161 transitions. [2020-10-27 22:29:26,894 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 22:29:26,894 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 56 [2020-10-27 22:29:26,894 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:26,896 INFO L225 Difference]: With dead ends: 122 [2020-10-27 22:29:26,896 INFO L226 Difference]: Without dead ends: 107 [2020-10-27 22:29:26,897 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 61 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=111, Invalid=645, Unknown=0, NotChecked=0, Total=756 [2020-10-27 22:29:26,898 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2020-10-27 22:29:26,910 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 101. [2020-10-27 22:29:26,911 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 101 states. [2020-10-27 22:29:26,912 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 132 transitions. [2020-10-27 22:29:26,912 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 132 transitions. Word has length 56 [2020-10-27 22:29:26,912 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:26,913 INFO L481 AbstractCegarLoop]: Abstraction has 101 states and 132 transitions. [2020-10-27 22:29:26,913 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:29:26,913 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 132 transitions. [2020-10-27 22:29:26,914 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:29:26,914 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:26,914 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:26,914 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 22:29:26,914 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:26,915 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:26,915 INFO L82 PathProgramCache]: Analyzing trace with hash 1805667890, now seen corresponding path program 3 times [2020-10-27 22:29:26,915 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:26,915 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1699575206] [2020-10-27 22:29:26,916 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:26,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:26,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,165 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,245 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:30,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:29:30,246 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:29:30,246 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3315 [2020-10-27 22:29:30,246 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:30,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:29:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:30,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:29:30,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:30,314 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:30,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:30,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:30,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:30,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:30,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:30,321 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:30,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:30,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:30,323 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:30,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:30,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,389 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,417 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:30,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:31,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:31,107 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:29:31,107 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 777 [2020-10-27 22:29:31,107 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:29:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:31,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:31,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:31,163 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:31,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:31,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,517 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:31,517 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:31,517 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:29:31,517 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 22:29:31,518 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:31,518 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:31,519 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:31,519 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:29:31,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:31,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:31,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:31,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:31,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 22:29:31,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:31,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:31,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:31,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:31,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:31,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:29:31,741 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:31,742 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:31,742 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:31,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:31,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:31,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:31,814 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:31,814 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:31,814 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:31,814 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:29:31,815 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:31,815 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:31,815 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:31,866 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 18 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:29:31,866 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1699575206] [2020-10-27 22:29:31,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:31,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 22:29:31,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [997398947] [2020-10-27 22:29:31,867 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 22:29:31,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:31,868 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 22:29:31,868 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=236, Unknown=0, NotChecked=0, Total=272 [2020-10-27 22:29:31,868 INFO L87 Difference]: Start difference. First operand 101 states and 132 transitions. Second operand 17 states. [2020-10-27 22:29:33,003 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:33,003 INFO L93 Difference]: Finished difference Result 134 states and 177 transitions. [2020-10-27 22:29:33,004 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 22:29:33,004 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-27 22:29:33,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:33,005 INFO L225 Difference]: With dead ends: 134 [2020-10-27 22:29:33,005 INFO L226 Difference]: Without dead ends: 129 [2020-10-27 22:29:33,006 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 77 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=128, Invalid=684, Unknown=0, NotChecked=0, Total=812 [2020-10-27 22:29:33,007 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2020-10-27 22:29:33,018 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 109. [2020-10-27 22:29:33,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 109 states. [2020-10-27 22:29:33,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 144 transitions. [2020-10-27 22:29:33,019 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 144 transitions. Word has length 50 [2020-10-27 22:29:33,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:33,020 INFO L481 AbstractCegarLoop]: Abstraction has 109 states and 144 transitions. [2020-10-27 22:29:33,020 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 22:29:33,020 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 144 transitions. [2020-10-27 22:29:33,021 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:29:33,021 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:33,021 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:33,022 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 22:29:33,022 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:33,022 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:33,022 INFO L82 PathProgramCache]: Analyzing trace with hash 1855420466, now seen corresponding path program 4 times [2020-10-27 22:29:33,022 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:33,023 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1572757402] [2020-10-27 22:29:33,023 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:33,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:33,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,245 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:33,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:35,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:29:35,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2513 [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:29:35,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:35,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:35,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,620 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:35,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:35,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:35,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:35,626 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:35,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:35,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:35,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:36,021 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:36,021 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:29:36,021 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 388 [2020-10-27 22:29:36,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:36,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:29:36,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:36,022 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:36,022 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:36,061 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:36,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:36,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:36,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:36,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 912 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:36,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:37,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:37,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:37,060 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:37,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:37,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:37,144 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:37,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:37,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:37,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 22:29:37,145 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:29:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:37,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:37,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:37,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:37,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:37,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:37,305 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:37,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:37,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:37,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:37,338 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:37,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:37,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:37,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:37,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:37,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:37,351 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:37,404 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 19 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 22:29:37,404 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1572757402] [2020-10-27 22:29:37,404 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:37,405 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 22:29:37,405 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [150338128] [2020-10-27 22:29:37,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 22:29:37,409 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:37,410 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 22:29:37,410 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:29:37,410 INFO L87 Difference]: Start difference. First operand 109 states and 144 transitions. Second operand 19 states. [2020-10-27 22:29:39,174 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:39,175 INFO L93 Difference]: Finished difference Result 154 states and 208 transitions. [2020-10-27 22:29:39,175 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:29:39,175 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-27 22:29:39,176 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:39,177 INFO L225 Difference]: With dead ends: 154 [2020-10-27 22:29:39,177 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 22:29:39,182 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=154, Invalid=902, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:29:39,183 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 22:29:39,205 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 112. [2020-10-27 22:29:39,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 112 states. [2020-10-27 22:29:39,207 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 112 states to 112 states and 149 transitions. [2020-10-27 22:29:39,207 INFO L78 Accepts]: Start accepts. Automaton has 112 states and 149 transitions. Word has length 50 [2020-10-27 22:29:39,207 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:39,207 INFO L481 AbstractCegarLoop]: Abstraction has 112 states and 149 transitions. [2020-10-27 22:29:39,207 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 22:29:39,207 INFO L276 IsEmpty]: Start isEmpty. Operand 112 states and 149 transitions. [2020-10-27 22:29:39,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:29:39,209 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:39,209 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:39,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 22:29:39,209 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:39,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:39,210 INFO L82 PathProgramCache]: Analyzing trace with hash -346188590, now seen corresponding path program 5 times [2020-10-27 22:29:39,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:39,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243440283] [2020-10-27 22:29:39,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:39,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:39,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,411 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,497 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,514 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:39,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:41,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:41,877 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2653 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:29:41,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:41,939 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:41,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:41,943 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:41,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:41,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:41,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:41,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:41,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:41,947 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:41,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:41,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:41,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:41,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:41,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,076 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,111 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:42,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:43,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:29:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1554 [2020-10-27 22:29:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:29:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:43,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:43,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:43,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:43,581 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:43,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,669 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,675 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:43,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:44,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:44,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:29:44,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 22:29:44,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:44,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:29:44,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:44,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:44,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:44,097 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:44,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:44,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,120 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:44,215 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:44,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:44,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 113 [2020-10-27 22:29:44,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:44,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:44,216 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:44,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:44,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:44,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:44,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:44,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:44,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 22:29:44,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:44,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:44,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:44,374 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:44,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:44,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:44,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:44,382 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:44,432 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 5 proven. 24 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:29:44,432 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243440283] [2020-10-27 22:29:44,432 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:44,433 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:29:44,433 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [358253461] [2020-10-27 22:29:44,434 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:29:44,435 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:44,435 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:29:44,435 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:29:44,436 INFO L87 Difference]: Start difference. First operand 112 states and 149 transitions. Second operand 20 states. [2020-10-27 22:29:46,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:46,016 INFO L93 Difference]: Finished difference Result 169 states and 231 transitions. [2020-10-27 22:29:46,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:29:46,017 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 50 [2020-10-27 22:29:46,017 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:46,022 INFO L225 Difference]: With dead ends: 169 [2020-10-27 22:29:46,022 INFO L226 Difference]: Without dead ends: 164 [2020-10-27 22:29:46,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 112 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=182, Invalid=940, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:29:46,027 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2020-10-27 22:29:46,045 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 125. [2020-10-27 22:29:46,046 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 125 states. [2020-10-27 22:29:46,047 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 170 transitions. [2020-10-27 22:29:46,047 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 170 transitions. Word has length 50 [2020-10-27 22:29:46,047 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:46,047 INFO L481 AbstractCegarLoop]: Abstraction has 125 states and 170 transitions. [2020-10-27 22:29:46,047 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:29:46,047 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 170 transitions. [2020-10-27 22:29:46,048 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 22:29:46,048 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:46,049 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:29:46,049 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 22:29:46,049 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:46,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:46,049 INFO L82 PathProgramCache]: Analyzing trace with hash 744349682, now seen corresponding path program 6 times [2020-10-27 22:29:46,050 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:46,050 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [273985380] [2020-10-27 22:29:46,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:46,061 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:46,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,243 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,307 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:46,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2321 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:48,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 22:29:48,384 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:48,427 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:48,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:48,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:48,432 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:48,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:48,438 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:48,441 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,533 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:48,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:49,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:49,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:29:49,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1052 [2020-10-27 22:29:49,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:29:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:49,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:49,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:49,527 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:49,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:49,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:49,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 412 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:49,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:49,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:49,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:50,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:50,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:50,022 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:50,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:50,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:50,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:50,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:50,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:50,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:50,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:50,163 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:50,178 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:50,178 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:50,179 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:50,179 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 22:29:50,179 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:50,179 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:29:50,180 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:50,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:50,181 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 22:29:50,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:50,290 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:50,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:50,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:29:50,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:50,352 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 20 refuted. 0 times theorem prover too weak. 6 trivial. 0 not checked. [2020-10-27 22:29:50,353 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [273985380] [2020-10-27 22:29:50,353 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:50,353 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 22:29:50,353 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [824906015] [2020-10-27 22:29:50,355 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 22:29:50,355 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:50,356 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 22:29:50,356 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=298, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:29:50,356 INFO L87 Difference]: Start difference. First operand 125 states and 170 transitions. Second operand 19 states. [2020-10-27 22:29:51,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:51,849 INFO L93 Difference]: Finished difference Result 172 states and 235 transitions. [2020-10-27 22:29:51,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:29:51,853 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 50 [2020-10-27 22:29:51,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:51,855 INFO L225 Difference]: With dead ends: 172 [2020-10-27 22:29:51,855 INFO L226 Difference]: Without dead ends: 167 [2020-10-27 22:29:51,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 96 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=157, Invalid=835, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:29:51,856 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2020-10-27 22:29:51,870 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 136. [2020-10-27 22:29:51,870 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 136 states. [2020-10-27 22:29:51,871 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 136 states to 136 states and 188 transitions. [2020-10-27 22:29:51,872 INFO L78 Accepts]: Start accepts. Automaton has 136 states and 188 transitions. Word has length 50 [2020-10-27 22:29:51,872 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:51,872 INFO L481 AbstractCegarLoop]: Abstraction has 136 states and 188 transitions. [2020-10-27 22:29:51,872 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 22:29:51,872 INFO L276 IsEmpty]: Start isEmpty. Operand 136 states and 188 transitions. [2020-10-27 22:29:51,873 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:29:51,873 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:51,874 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 22:29:51,874 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 22:29:51,874 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:51,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:51,874 INFO L82 PathProgramCache]: Analyzing trace with hash 2049530356, now seen corresponding path program 3 times [2020-10-27 22:29:51,875 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:51,875 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [866589084] [2020-10-27 22:29:51,875 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:51,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:51,893 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:51,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,152 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:52,235 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1836 [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:29:53,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:53,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:29:53,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:53,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:53,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:53,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,776 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:53,776 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:53,776 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:53,776 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:29:53,776 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:53,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:53,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:53,777 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:53,777 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:53,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:53,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:53,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,903 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:53,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1027 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:54,810 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:54,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:54,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:54,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:54,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:55,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:55,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:55,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:55,056 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:55,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:55,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:55,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:55,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:55,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:55,201 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:55,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:55,205 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,215 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:55,216 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:55,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:55,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:55,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:55,265 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:55,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:55,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:55,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:29:55,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:55,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:55,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:55,331 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:55,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:55,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:55,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:55,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:55,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:55,400 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 6 proven. 22 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 22:29:55,401 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [866589084] [2020-10-27 22:29:55,401 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:55,401 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 22:29:55,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1416588914] [2020-10-27 22:29:55,401 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 22:29:55,401 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:55,402 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 22:29:55,402 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:29:55,402 INFO L87 Difference]: Start difference. First operand 136 states and 188 transitions. Second operand 19 states. [2020-10-27 22:29:56,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:56,749 INFO L93 Difference]: Finished difference Result 177 states and 247 transitions. [2020-10-27 22:29:56,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:29:56,749 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-27 22:29:56,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:56,752 INFO L225 Difference]: With dead ends: 177 [2020-10-27 22:29:56,752 INFO L226 Difference]: Without dead ends: 172 [2020-10-27 22:29:56,753 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 97 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=911, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 22:29:56,754 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 172 states. [2020-10-27 22:29:56,771 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 172 to 137. [2020-10-27 22:29:56,772 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 137 states. [2020-10-27 22:29:56,773 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 137 states to 137 states and 189 transitions. [2020-10-27 22:29:56,773 INFO L78 Accepts]: Start accepts. Automaton has 137 states and 189 transitions. Word has length 57 [2020-10-27 22:29:56,773 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:56,773 INFO L481 AbstractCegarLoop]: Abstraction has 137 states and 189 transitions. [2020-10-27 22:29:56,773 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 22:29:56,773 INFO L276 IsEmpty]: Start isEmpty. Operand 137 states and 189 transitions. [2020-10-27 22:29:56,777 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:29:56,777 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:56,777 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 22:29:56,778 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 22:29:56,778 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:56,778 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:56,778 INFO L82 PathProgramCache]: Analyzing trace with hash -1160945836, now seen corresponding path program 4 times [2020-10-27 22:29:56,778 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:56,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1990252200] [2020-10-27 22:29:56,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:29:56,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:56,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:56,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:57,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:57,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:57,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 22:29:58,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:29:58,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1214 [2020-10-27 22:29:58,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:29:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:29:58,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:29:58,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:29:58,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:29:58,062 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,064 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:29:58,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,131 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:29:58,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 22:29:58,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 22:29:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:29:58,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,166 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:58,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,173 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:29:58,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:58,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:29:58,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:29:58,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,361 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:29:58,364 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:58,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,429 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:29:58,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,433 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:29:58,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:29:58,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:29:58,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:29:58,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:29:58,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:29:58,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:29:58,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:29:58,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:29:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:29:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:29:58,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:29:58,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:29:58,611 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 15 proven. 13 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 22:29:58,611 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1990252200] [2020-10-27 22:29:58,612 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:29:58,612 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 22:29:58,612 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [68491708] [2020-10-27 22:29:58,612 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 22:29:58,612 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:29:58,613 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 22:29:58,613 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:29:58,613 INFO L87 Difference]: Start difference. First operand 137 states and 189 transitions. Second operand 19 states. [2020-10-27 22:29:59,954 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:29:59,954 INFO L93 Difference]: Finished difference Result 170 states and 233 transitions. [2020-10-27 22:29:59,957 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 22:29:59,958 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 57 [2020-10-27 22:29:59,958 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:29:59,960 INFO L225 Difference]: With dead ends: 170 [2020-10-27 22:29:59,960 INFO L226 Difference]: Without dead ends: 165 [2020-10-27 22:29:59,961 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 104 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=129, Invalid=863, Unknown=0, NotChecked=0, Total=992 [2020-10-27 22:29:59,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-10-27 22:29:59,982 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 143. [2020-10-27 22:29:59,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 143 states. [2020-10-27 22:29:59,984 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 143 states to 143 states and 199 transitions. [2020-10-27 22:29:59,984 INFO L78 Accepts]: Start accepts. Automaton has 143 states and 199 transitions. Word has length 57 [2020-10-27 22:29:59,984 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:29:59,984 INFO L481 AbstractCegarLoop]: Abstraction has 143 states and 199 transitions. [2020-10-27 22:29:59,984 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 22:29:59,984 INFO L276 IsEmpty]: Start isEmpty. Operand 143 states and 199 transitions. [2020-10-27 22:29:59,987 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:29:59,987 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:29:59,987 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 22:29:59,987 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 22:29:59,988 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:29:59,988 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:29:59,988 INFO L82 PathProgramCache]: Analyzing trace with hash 1310216244, now seen corresponding path program 5 times [2020-10-27 22:29:59,991 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:29:59,991 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [265775412] [2020-10-27 22:29:59,991 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:00,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:00,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,162 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,310 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:00,564 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3253 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:30:03,259 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:03,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:03,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:03,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:03,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:03,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:03,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:03,317 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:03,321 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:03,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:03,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,005 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,005 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:04,005 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:30:04,005 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 683 [2020-10-27 22:30:04,006 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:30:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:04,006 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:04,006 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,044 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:04,048 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:04,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:30:04,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 153 [2020-10-27 22:30:04,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:30:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:04,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:04,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:04,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:04,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,267 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:30:04,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:04,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:04,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,417 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:04,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:04,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:04,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:04,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 22:30:04,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:04,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:04,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:30:04,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:04,508 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:04,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:04,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:30:04,529 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:30:04,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:04,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:04,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:30:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:04,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:04,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:04,690 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 3 proven. 30 refuted. 0 times theorem prover too weak. 7 trivial. 0 not checked. [2020-10-27 22:30:04,691 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [265775412] [2020-10-27 22:30:04,691 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:04,691 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:30:04,693 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [15391489] [2020-10-27 22:30:04,694 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:30:04,697 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:04,698 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:30:04,698 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=375, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:30:04,698 INFO L87 Difference]: Start difference. First operand 143 states and 199 transitions. Second operand 21 states. [2020-10-27 22:30:06,303 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:06,303 INFO L93 Difference]: Finished difference Result 179 states and 245 transitions. [2020-10-27 22:30:06,304 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:30:06,304 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 57 [2020-10-27 22:30:06,304 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:06,306 INFO L225 Difference]: With dead ends: 179 [2020-10-27 22:30:06,306 INFO L226 Difference]: Without dead ends: 174 [2020-10-27 22:30:06,307 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 105 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=167, Invalid=1023, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 22:30:06,307 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 174 states. [2020-10-27 22:30:06,322 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 174 to 140. [2020-10-27 22:30:06,322 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 140 states. [2020-10-27 22:30:06,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 140 states to 140 states and 194 transitions. [2020-10-27 22:30:06,324 INFO L78 Accepts]: Start accepts. Automaton has 140 states and 194 transitions. Word has length 57 [2020-10-27 22:30:06,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:06,325 INFO L481 AbstractCegarLoop]: Abstraction has 140 states and 194 transitions. [2020-10-27 22:30:06,325 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:30:06,325 INFO L276 IsEmpty]: Start isEmpty. Operand 140 states and 194 transitions. [2020-10-27 22:30:06,326 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 22:30:06,326 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:06,326 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 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] [2020-10-27 22:30:06,326 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 22:30:06,327 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:06,327 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:06,327 INFO L82 PathProgramCache]: Analyzing trace with hash -1900259948, now seen corresponding path program 6 times [2020-10-27 22:30:06,327 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:06,327 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [999003914] [2020-10-27 22:30:06,327 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:06,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:06,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,548 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,592 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:06,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:07,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3138 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 22:30:09,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:09,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:09,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:09,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:09,527 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:09,529 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:09,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:09,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,567 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,586 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:09,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1163 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:10,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:10,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:10,733 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:10,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,762 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:10,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,030 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:11,030 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:11,030 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:30:11,030 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 297 [2020-10-27 22:30:11,031 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:30:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:11,031 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:11,031 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:11,078 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:11,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:11,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,103 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:11,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:11,220 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:11,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:11,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:11,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:11,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:11,284 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 40 [2020-10-27 22:30:11,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:11,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,296 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:11,296 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:30:11,297 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:11,348 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:30:11,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:11,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:11,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:11,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:11,394 INFO L134 CoverageAnalysis]: Checked inductivity of 40 backedges. 8 proven. 23 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 22:30:11,394 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [999003914] [2020-10-27 22:30:11,394 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:11,394 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:30:11,395 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1325154436] [2020-10-27 22:30:11,395 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:30:11,395 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:11,395 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:30:11,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:30:11,396 INFO L87 Difference]: Start difference. First operand 140 states and 194 transitions. Second operand 20 states. [2020-10-27 22:30:12,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:12,929 INFO L93 Difference]: Finished difference Result 161 states and 221 transitions. [2020-10-27 22:30:12,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:30:12,929 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-27 22:30:12,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:12,932 INFO L225 Difference]: With dead ends: 161 [2020-10-27 22:30:12,932 INFO L226 Difference]: Without dead ends: 156 [2020-10-27 22:30:12,934 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=166, Invalid=956, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 22:30:12,934 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2020-10-27 22:30:12,949 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 139. [2020-10-27 22:30:12,949 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 139 states. [2020-10-27 22:30:12,950 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 139 states to 139 states and 193 transitions. [2020-10-27 22:30:12,951 INFO L78 Accepts]: Start accepts. Automaton has 139 states and 193 transitions. Word has length 57 [2020-10-27 22:30:12,951 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:12,951 INFO L481 AbstractCegarLoop]: Abstraction has 139 states and 193 transitions. [2020-10-27 22:30:12,951 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:30:12,951 INFO L276 IsEmpty]: Start isEmpty. Operand 139 states and 193 transitions. [2020-10-27 22:30:12,953 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:12,953 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:12,953 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 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 22:30:12,953 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 22:30:12,953 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:12,953 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:12,954 INFO L82 PathProgramCache]: Analyzing trace with hash -1181756634, now seen corresponding path program 7 times [2020-10-27 22:30:12,954 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:12,954 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395108608] [2020-10-27 22:30:12,954 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:12,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:12,971 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,135 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,153 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:13,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1327 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:14,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:14,335 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:14,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:14,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,341 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:14,342 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:14,344 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:14,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:14,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,467 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,473 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,486 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,502 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:14,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:15,920 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:15,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:15,921 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1569 [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:15,922 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:15,996 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:16,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:16,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:16,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:16,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:16,128 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:16,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:16,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:16,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:30:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:16,201 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:16,201 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:16,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:16,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:16,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:16,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:30:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:16,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:16,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:16,383 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:16,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:16,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:16,395 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:16,396 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:16,425 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:16,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:16,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:16,430 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:16,431 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:16,505 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 8 proven. 42 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 22:30:16,505 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395108608] [2020-10-27 22:30:16,505 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:16,505 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:30:16,506 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2006019512] [2020-10-27 22:30:16,506 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:30:16,506 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:16,506 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:30:16,507 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:30:16,507 INFO L87 Difference]: Start difference. First operand 139 states and 193 transitions. Second operand 22 states. [2020-10-27 22:30:18,331 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:18,331 INFO L93 Difference]: Finished difference Result 229 states and 325 transitions. [2020-10-27 22:30:18,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:30:18,336 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-27 22:30:18,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:18,339 INFO L225 Difference]: With dead ends: 229 [2020-10-27 22:30:18,339 INFO L226 Difference]: Without dead ends: 224 [2020-10-27 22:30:18,341 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 164 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=194, Invalid=1212, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:30:18,341 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 224 states. [2020-10-27 22:30:18,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 224 to 164. [2020-10-27 22:30:18,378 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 22:30:18,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2020-10-27 22:30:18,381 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 58 [2020-10-27 22:30:18,381 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:18,381 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2020-10-27 22:30:18,381 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:30:18,381 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2020-10-27 22:30:18,383 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:18,383 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:18,383 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 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 22:30:18,383 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 22:30:18,383 INFO L429 AbstractCegarLoop]: === Iteration 26 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:18,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:18,384 INFO L82 PathProgramCache]: Analyzing trace with hash 901922022, now seen corresponding path program 8 times [2020-10-27 22:30:18,384 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:18,384 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2092276173] [2020-10-27 22:30:18,384 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:18,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:18,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,575 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,588 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,715 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,828 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:18,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:20,138 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:20,138 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:20,138 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1740 [2020-10-27 22:30:20,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:20,139 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:20,139 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:20,178 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:20,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:20,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,183 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:20,183 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:20,183 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:20,183 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:20,183 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:20,184 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:20,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:20,186 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:20,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:20,195 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,405 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:20,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1548 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:21,740 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:21,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:21,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,829 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:21,940 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:22,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 593 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:22,374 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:22,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:22,458 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:22,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:22,529 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:30:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:22,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:22,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:22,594 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:22,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:22,627 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:22,628 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:22,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:22,738 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:22,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:22,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:22,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:22,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:22,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 22:30:22,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:22,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:22,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:22,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:22,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:22,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:22,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:22,826 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:22,826 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:22,826 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:22,826 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:30:22,827 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:22,827 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:22,827 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:22,898 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 12 proven. 37 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 22:30:22,898 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2092276173] [2020-10-27 22:30:22,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:22,898 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:30:22,898 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1185460717] [2020-10-27 22:30:22,899 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:30:22,899 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:22,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:30:22,900 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:30:22,900 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand 20 states. [2020-10-27 22:30:24,264 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 59 [2020-10-27 22:30:24,709 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 62 [2020-10-27 22:30:24,912 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 52 [2020-10-27 22:30:25,084 WARN L193 SmtUtils]: Spent 133.00 ms on a formula simplification. DAG size of input: 66 DAG size of output: 61 [2020-10-27 22:30:25,338 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:25,338 INFO L93 Difference]: Finished difference Result 200 states and 281 transitions. [2020-10-27 22:30:25,344 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:30:25,344 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-27 22:30:25,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:25,346 INFO L225 Difference]: With dead ends: 200 [2020-10-27 22:30:25,347 INFO L226 Difference]: Without dead ends: 195 [2020-10-27 22:30:25,352 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=180, Invalid=1010, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 22:30:25,353 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 195 states. [2020-10-27 22:30:25,383 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 195 to 164. [2020-10-27 22:30:25,384 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-10-27 22:30:25,385 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 234 transitions. [2020-10-27 22:30:25,385 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 234 transitions. Word has length 58 [2020-10-27 22:30:25,386 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:25,386 INFO L481 AbstractCegarLoop]: Abstraction has 164 states and 234 transitions. [2020-10-27 22:30:25,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:30:25,386 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 234 transitions. [2020-10-27 22:30:25,389 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:25,390 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:25,390 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:30:25,390 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable25 [2020-10-27 22:30:25,390 INFO L429 AbstractCegarLoop]: === Iteration 27 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:25,390 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:25,391 INFO L82 PathProgramCache]: Analyzing trace with hash -456292218, now seen corresponding path program 9 times [2020-10-27 22:30:25,391 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:25,391 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1419073658] [2020-10-27 22:30:25,391 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:25,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:25,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:25,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2435 [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:27,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:27,838 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:27,838 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:27,885 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:27,887 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:27,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:27,891 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:27,892 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:27,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:27,895 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:27,901 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:27,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:27,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:28,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:29,018 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:29,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:29,202 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:29,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4336 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:32,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:32,296 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:32,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:32,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,391 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 585 [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:32,887 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:30:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:32,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:32,888 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:32,933 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:32,937 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:32,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:32,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 309 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:33,247 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:33,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:33,309 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:33,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:33,385 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 22:30:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:33,386 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:33,386 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:33,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:33,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:33,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,520 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:33,520 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:33,520 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:33,520 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:30:33,520 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:33,521 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:33,521 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:33,559 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:33,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:33,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:33,566 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:33,566 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:33,566 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:33,566 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 22:30:33,567 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:33,567 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:33,567 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:33,631 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 14 proven. 28 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 22:30:33,631 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1419073658] [2020-10-27 22:30:33,632 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:33,632 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:30:33,632 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [353843802] [2020-10-27 22:30:33,632 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:30:33,632 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:33,633 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:30:33,633 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=51, Invalid=369, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:30:33,633 INFO L87 Difference]: Start difference. First operand 164 states and 234 transitions. Second operand 21 states. [2020-10-27 22:30:35,529 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:35,529 INFO L93 Difference]: Finished difference Result 222 states and 320 transitions. [2020-10-27 22:30:35,530 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:30:35,530 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-27 22:30:35,530 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:35,532 INFO L225 Difference]: With dead ends: 222 [2020-10-27 22:30:35,532 INFO L226 Difference]: Without dead ends: 217 [2020-10-27 22:30:35,534 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=200, Invalid=1132, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 22:30:35,535 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 217 states. [2020-10-27 22:30:35,556 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 217 to 173. [2020-10-27 22:30:35,557 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 173 states. [2020-10-27 22:30:35,558 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 173 states to 173 states and 249 transitions. [2020-10-27 22:30:35,558 INFO L78 Accepts]: Start accepts. Automaton has 173 states and 249 transitions. Word has length 58 [2020-10-27 22:30:35,559 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:35,559 INFO L481 AbstractCegarLoop]: Abstraction has 173 states and 249 transitions. [2020-10-27 22:30:35,559 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:30:35,559 INFO L276 IsEmpty]: Start isEmpty. Operand 173 states and 249 transitions. [2020-10-27 22:30:35,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:35,560 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:35,561 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:30:35,561 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable26 [2020-10-27 22:30:35,561 INFO L429 AbstractCegarLoop]: === Iteration 28 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:35,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:35,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1212111942, now seen corresponding path program 10 times [2020-10-27 22:30:35,562 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:35,562 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1478975829] [2020-10-27 22:30:35,562 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:35,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:35,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:35,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:38,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2544 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:38,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:38,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:38,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:38,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,180 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:38,180 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:38,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:38,181 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:38,181 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:38,181 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:38,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:38,182 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:38,184 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:38,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:38,199 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,324 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,380 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,494 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:38,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1862 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:40,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:40,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:40,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,262 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,262 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:40,263 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:40,331 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:40,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:40,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,486 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:40,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:40,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,526 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:30:40,527 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:40,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:40,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:40,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:40,614 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,622 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:40,623 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,699 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:40,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:40,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:40,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:40,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:40,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:40,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:40,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:40,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:40,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:40,777 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 9 proven. 41 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 22:30:40,777 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1478975829] [2020-10-27 22:30:40,777 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:40,777 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:30:40,778 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [548194747] [2020-10-27 22:30:40,778 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:30:40,778 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:40,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:30:40,778 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:30:40,779 INFO L87 Difference]: Start difference. First operand 173 states and 249 transitions. Second operand 22 states. [2020-10-27 22:30:42,734 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:42,735 INFO L93 Difference]: Finished difference Result 272 states and 391 transitions. [2020-10-27 22:30:42,736 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:30:42,737 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 58 [2020-10-27 22:30:42,737 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:42,740 INFO L225 Difference]: With dead ends: 272 [2020-10-27 22:30:42,740 INFO L226 Difference]: Without dead ends: 267 [2020-10-27 22:30:42,741 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 122 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=204, Invalid=1128, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 22:30:42,741 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-10-27 22:30:42,767 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 198. [2020-10-27 22:30:42,767 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 198 states. [2020-10-27 22:30:42,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 198 states to 198 states and 290 transitions. [2020-10-27 22:30:42,769 INFO L78 Accepts]: Start accepts. Automaton has 198 states and 290 transitions. Word has length 58 [2020-10-27 22:30:42,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:42,769 INFO L481 AbstractCegarLoop]: Abstraction has 198 states and 290 transitions. [2020-10-27 22:30:42,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:30:42,769 INFO L276 IsEmpty]: Start isEmpty. Operand 198 states and 290 transitions. [2020-10-27 22:30:42,771 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:42,771 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:42,772 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:30:42,772 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable27 [2020-10-27 22:30:42,772 INFO L429 AbstractCegarLoop]: === Iteration 29 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:42,772 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:42,772 INFO L82 PathProgramCache]: Analyzing trace with hash -1679631226, now seen corresponding path program 11 times [2020-10-27 22:30:42,772 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:42,773 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1447633495] [2020-10-27 22:30:42,773 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:42,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:42,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:42,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:42,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:42,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,001 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,064 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:43,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1393 [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:44,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:44,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:44,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:44,224 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:44,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:44,227 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:44,230 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:44,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:44,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:44,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,354 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:44,493 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,187 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:45,187 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:45,187 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:30:45,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 951 [2020-10-27 22:30:45,188 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:30:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:45,188 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:45,188 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:45,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:45,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:45,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,314 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:45,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:46,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:46,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1075 [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:46,305 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:46,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:46,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:46,373 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,408 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,437 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:46,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:46,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:46,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:46,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:46,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:46,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:46,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:47,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:47,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:47,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:30:47,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 22:30:47,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:30:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:47,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:47,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:47,094 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:47,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:47,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:47,107 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:47,107 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:47,108 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:47,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:47,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:47,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:47,196 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:47,267 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 18 proven. 28 refuted. 0 times theorem prover too weak. 14 trivial. 0 not checked. [2020-10-27 22:30:47,267 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1447633495] [2020-10-27 22:30:47,267 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:47,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:30:47,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [599235766] [2020-10-27 22:30:47,268 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:30:47,268 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:47,268 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:30:47,269 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=340, Unknown=0, NotChecked=0, Total=380 [2020-10-27 22:30:47,269 INFO L87 Difference]: Start difference. First operand 198 states and 290 transitions. Second operand 20 states. [2020-10-27 22:30:49,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:49,086 INFO L93 Difference]: Finished difference Result 295 states and 429 transitions. [2020-10-27 22:30:49,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:30:49,087 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-27 22:30:49,087 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:49,090 INFO L225 Difference]: With dead ends: 295 [2020-10-27 22:30:49,090 INFO L226 Difference]: Without dead ends: 290 [2020-10-27 22:30:49,091 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=164, Invalid=1026, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 22:30:49,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 290 states. [2020-10-27 22:30:49,123 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 290 to 235. [2020-10-27 22:30:49,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 235 states. [2020-10-27 22:30:49,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 235 states to 235 states and 350 transitions. [2020-10-27 22:30:49,125 INFO L78 Accepts]: Start accepts. Automaton has 235 states and 350 transitions. Word has length 58 [2020-10-27 22:30:49,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:49,126 INFO L481 AbstractCegarLoop]: Abstraction has 235 states and 350 transitions. [2020-10-27 22:30:49,126 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:30:49,126 INFO L276 IsEmpty]: Start isEmpty. Operand 235 states and 350 transitions. [2020-10-27 22:30:49,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:49,128 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:49,128 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:30:49,128 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable28 [2020-10-27 22:30:49,129 INFO L429 AbstractCegarLoop]: === Iteration 30 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:49,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:49,129 INFO L82 PathProgramCache]: Analyzing trace with hash 946931910, now seen corresponding path program 12 times [2020-10-27 22:30:49,129 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:49,129 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [381055761] [2020-10-27 22:30:49,129 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:49,139 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,353 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,396 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:49,419 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1355 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:50,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:50,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:50,542 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:50,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:50,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:50,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:50,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:50,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:50,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,876 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:50,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2157 [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:52,711 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:30:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:52,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:30:52,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:52,763 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:52,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:52,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 521 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:53,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:30:53,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:53,322 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:53,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:53,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 365 [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:30:53,703 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:53,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:30:53,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:53,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:53,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,792 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:53,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:30:53,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:53,917 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:30:53,919 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:53,921 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:53,928 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:53,928 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:30:53,929 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:53,997 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:30:53,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:53,999 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:30:54,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:30:54,003 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:54,067 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 32 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 22:30:54,067 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [381055761] [2020-10-27 22:30:54,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:30:54,068 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:30:54,068 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1200736089] [2020-10-27 22:30:54,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:30:54,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:30:54,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:30:54,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=49, Invalid=371, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:30:54,069 INFO L87 Difference]: Start difference. First operand 235 states and 350 transitions. Second operand 21 states. [2020-10-27 22:30:56,067 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:30:56,067 INFO L93 Difference]: Finished difference Result 313 states and 469 transitions. [2020-10-27 22:30:56,068 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 22:30:56,068 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 58 [2020-10-27 22:30:56,068 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:30:56,071 INFO L225 Difference]: With dead ends: 313 [2020-10-27 22:30:56,071 INFO L226 Difference]: Without dead ends: 308 [2020-10-27 22:30:56,072 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 182 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=219, Invalid=1263, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:30:56,072 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 308 states. [2020-10-27 22:30:56,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 308 to 248. [2020-10-27 22:30:56,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-10-27 22:30:56,106 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 371 transitions. [2020-10-27 22:30:56,106 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 371 transitions. Word has length 58 [2020-10-27 22:30:56,106 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:30:56,106 INFO L481 AbstractCegarLoop]: Abstraction has 248 states and 371 transitions. [2020-10-27 22:30:56,106 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:30:56,107 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 371 transitions. [2020-10-27 22:30:56,108 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 22:30:56,109 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:30:56,109 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:30:56,109 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable29 [2020-10-27 22:30:56,109 INFO L429 AbstractCegarLoop]: === Iteration 31 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:30:56,109 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:30:56,110 INFO L82 PathProgramCache]: Analyzing trace with hash -1264356730, now seen corresponding path program 13 times [2020-10-27 22:30:56,110 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:30:56,110 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951060830] [2020-10-27 22:30:56,110 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:30:56,120 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:56,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,292 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,361 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,378 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,393 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:58,152 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 22:30:58,152 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2031 [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 22:30:58,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:58,198 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:30:58,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:58,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:30:58,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:30:58,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:30:58,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:30:58,213 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,336 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:58,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:30:59,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2856 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:01,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:01,068 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:01,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:01,123 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:01,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:01,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:01,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:01,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:01,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:01,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:01,339 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:01,339 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:01,339 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:01,339 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:31:01,340 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:01,340 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:01,340 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:01,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:01,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:01,497 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:01,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:01,498 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:03,709 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:03,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:03,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:03,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:03,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:03,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:03,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:03,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:03,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:03,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:03,853 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:31:03,854 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:03,939 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 30 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 22:31:03,939 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951060830] [2020-10-27 22:31:03,939 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:03,939 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 22:31:03,940 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [975388353] [2020-10-27 22:31:03,940 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 22:31:03,940 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:03,940 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 22:31:03,940 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=337, Unknown=1, NotChecked=0, Total=380 [2020-10-27 22:31:03,941 INFO L87 Difference]: Start difference. First operand 248 states and 371 transitions. Second operand 20 states. [2020-10-27 22:31:06,212 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:06,213 INFO L93 Difference]: Finished difference Result 300 states and 443 transitions. [2020-10-27 22:31:06,213 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 22:31:06,213 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-27 22:31:06,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:06,216 INFO L225 Difference]: With dead ends: 300 [2020-10-27 22:31:06,216 INFO L226 Difference]: Without dead ends: 295 [2020-10-27 22:31:06,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 2 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 3.7s TimeCoverageRelationStatistics Valid=174, Invalid=1015, Unknown=1, NotChecked=0, Total=1190 [2020-10-27 22:31:06,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 295 states. [2020-10-27 22:31:06,247 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 295 to 263. [2020-10-27 22:31:06,247 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 263 states. [2020-10-27 22:31:06,249 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 263 states to 263 states and 395 transitions. [2020-10-27 22:31:06,249 INFO L78 Accepts]: Start accepts. Automaton has 263 states and 395 transitions. Word has length 58 [2020-10-27 22:31:06,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:06,250 INFO L481 AbstractCegarLoop]: Abstraction has 263 states and 395 transitions. [2020-10-27 22:31:06,250 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 22:31:06,250 INFO L276 IsEmpty]: Start isEmpty. Operand 263 states and 395 transitions. [2020-10-27 22:31:06,252 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:06,252 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:06,252 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:31:06,253 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable30 [2020-10-27 22:31:06,253 INFO L429 AbstractCegarLoop]: === Iteration 32 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:06,253 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:06,253 INFO L82 PathProgramCache]: Analyzing trace with hash -1893983616, now seen corresponding path program 7 times [2020-10-27 22:31:06,254 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:06,254 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [287372979] [2020-10-27 22:31:06,254 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:06,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:06,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,684 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:06,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:08,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:11,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:31:11,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:11,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:31:11,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:11,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,325 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:11,325 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:31:11,326 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:11,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:31:11,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:11,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,644 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:11,801 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2083 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:13,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:13,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:13,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:13,462 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,505 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,519 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:13,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 332 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:13,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:13,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:13,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:13,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:13,884 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:31:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:13,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:13,885 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:13,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:13,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:13,993 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:31:14,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:14,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:14,029 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:14,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:14,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:14,137 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:14,148 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:14,149 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:14,149 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:14,197 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:14,199 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:14,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:14,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:14,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:14,232 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:31:14,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:14,320 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:31:14,322 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:14,323 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:14,330 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:14,330 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:14,331 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:14,376 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 16 proven. 25 refuted. 0 times theorem prover too weak. 26 trivial. 0 not checked. [2020-10-27 22:31:14,376 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [287372979] [2020-10-27 22:31:14,377 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:14,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 22:31:14,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895137377] [2020-10-27 22:31:14,377 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 22:31:14,377 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:14,378 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 22:31:14,378 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=305, Unknown=0, NotChecked=0, Total=342 [2020-10-27 22:31:14,378 INFO L87 Difference]: Start difference. First operand 263 states and 395 transitions. Second operand 19 states. [2020-10-27 22:31:15,039 WARN L193 SmtUtils]: Spent 122.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 22:31:15,219 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 22:31:15,410 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 53 DAG size of output: 52 [2020-10-27 22:31:15,586 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-27 22:31:16,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:16,841 INFO L93 Difference]: Finished difference Result 322 states and 484 transitions. [2020-10-27 22:31:16,842 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:31:16,842 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 65 [2020-10-27 22:31:16,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:16,845 INFO L225 Difference]: With dead ends: 322 [2020-10-27 22:31:16,846 INFO L226 Difference]: Without dead ends: 317 [2020-10-27 22:31:16,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 129 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=149, Invalid=1041, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 22:31:16,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 317 states. [2020-10-27 22:31:16,879 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 317 to 266. [2020-10-27 22:31:16,879 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 266 states. [2020-10-27 22:31:16,881 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 266 states to 266 states and 400 transitions. [2020-10-27 22:31:16,881 INFO L78 Accepts]: Start accepts. Automaton has 266 states and 400 transitions. Word has length 65 [2020-10-27 22:31:16,882 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:16,882 INFO L481 AbstractCegarLoop]: Abstraction has 266 states and 400 transitions. [2020-10-27 22:31:16,882 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 22:31:16,882 INFO L276 IsEmpty]: Start isEmpty. Operand 266 states and 400 transitions. [2020-10-27 22:31:16,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:16,884 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:16,884 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-27 22:31:16,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable31 [2020-10-27 22:31:16,885 INFO L429 AbstractCegarLoop]: === Iteration 33 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:16,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:16,885 INFO L82 PathProgramCache]: Analyzing trace with hash -563504864, now seen corresponding path program 8 times [2020-10-27 22:31:16,885 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:16,885 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1643506435] [2020-10-27 22:31:16,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:16,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:16,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,026 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,201 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,435 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:17,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,555 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:20,555 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:31:20,555 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:31:20,555 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3658 [2020-10-27 22:31:20,555 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:31:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:31:20,556 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:31:20,556 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:20,605 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:31:20,608 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:20,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:31:20,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:20,612 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:31:20,612 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:20,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:31:20,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:20,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,709 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,731 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:20,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:21,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:21,274 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:21,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:21,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,321 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,388 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 600 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:21,880 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:21,956 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:21,960 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:21,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:21,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:21,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:22,063 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:22,066 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:22,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:22,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:22,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:22,114 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:22,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:22,117 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:22,123 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:22,123 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:22,123 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:22,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:31:22,124 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:22,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:22,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:22,189 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:22,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:22,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:22,201 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:22,201 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:22,202 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:31:22,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 5 [2020-10-27 22:31:22,278 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:31:22,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:22,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:22,286 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:31:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:22,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:22,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:22,326 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 8 proven. 39 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 22:31:22,326 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1643506435] [2020-10-27 22:31:22,326 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:22,326 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:31:22,326 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [365830651] [2020-10-27 22:31:22,327 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:31:22,327 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:22,327 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:31:22,327 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=376, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:31:22,328 INFO L87 Difference]: Start difference. First operand 266 states and 400 transitions. Second operand 21 states. [2020-10-27 22:31:24,052 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:24,052 INFO L93 Difference]: Finished difference Result 348 states and 527 transitions. [2020-10-27 22:31:24,053 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 22:31:24,053 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-27 22:31:24,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:24,056 INFO L225 Difference]: With dead ends: 348 [2020-10-27 22:31:24,056 INFO L226 Difference]: Without dead ends: 343 [2020-10-27 22:31:24,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 121 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=156, Invalid=1034, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 22:31:24,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 343 states. [2020-10-27 22:31:24,094 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 343 to 280. [2020-10-27 22:31:24,094 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 280 states. [2020-10-27 22:31:24,096 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 280 states to 280 states and 422 transitions. [2020-10-27 22:31:24,097 INFO L78 Accepts]: Start accepts. Automaton has 280 states and 422 transitions. Word has length 65 [2020-10-27 22:31:24,097 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:24,097 INFO L481 AbstractCegarLoop]: Abstraction has 280 states and 422 transitions. [2020-10-27 22:31:24,097 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:31:24,097 INFO L276 IsEmpty]: Start isEmpty. Operand 280 states and 422 transitions. [2020-10-27 22:31:24,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:24,100 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:24,100 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-27 22:31:24,100 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable32 [2020-10-27 22:31:24,100 INFO L429 AbstractCegarLoop]: === Iteration 34 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:24,101 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:24,101 INFO L82 PathProgramCache]: Analyzing trace with hash 1277251808, now seen corresponding path program 9 times [2020-10-27 22:31:24,101 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:24,101 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1551046173] [2020-10-27 22:31:24,101 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:24,112 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:24,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,251 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:24,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:25,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:25,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:26,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,113 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:29,113 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:31:29,113 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:31:29,114 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:29,164 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:31:29,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:29,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:31:29,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:29,171 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:31:29,174 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:29,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:29,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:30,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:30,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:31:30,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1587 [2020-10-27 22:31:30,763 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:30,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:31:30,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:30,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:30,764 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:30,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:30,815 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:30,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,913 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,935 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:30,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 674 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:31,491 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:31,492 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:31,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:31,529 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:31,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,561 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,830 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:31,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 300 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:31,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:31,897 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:31,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:31,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:31,968 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:31,969 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:32,092 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:32,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:32,096 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:32,108 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:32,108 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:32,108 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:32,108 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:31:32,109 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:32,109 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:32,109 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:32,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:32,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:32,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:32,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:32,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:31:32,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:32,268 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:31:32,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:32,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:32,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:32,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:32,359 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 16 proven. 33 refuted. 0 times theorem prover too weak. 16 trivial. 0 not checked. [2020-10-27 22:31:32,360 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1551046173] [2020-10-27 22:31:32,360 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:32,360 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:31:32,360 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10498633] [2020-10-27 22:31:32,360 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:31:32,360 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:32,361 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:31:32,361 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=416, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:31:32,361 INFO L87 Difference]: Start difference. First operand 280 states and 422 transitions. Second operand 22 states. [2020-10-27 22:31:34,627 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:34,627 INFO L93 Difference]: Finished difference Result 342 states and 518 transitions. [2020-10-27 22:31:34,628 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:31:34,628 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 65 [2020-10-27 22:31:34,628 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:34,631 INFO L225 Difference]: With dead ends: 342 [2020-10-27 22:31:34,631 INFO L226 Difference]: Without dead ends: 337 [2020-10-27 22:31:34,632 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 157 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=169, Invalid=1237, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 22:31:34,632 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-27 22:31:34,666 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 289. [2020-10-27 22:31:34,666 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 289 states. [2020-10-27 22:31:34,668 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 289 states to 289 states and 437 transitions. [2020-10-27 22:31:34,668 INFO L78 Accepts]: Start accepts. Automaton has 289 states and 437 transitions. Word has length 65 [2020-10-27 22:31:34,668 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:34,668 INFO L481 AbstractCegarLoop]: Abstraction has 289 states and 437 transitions. [2020-10-27 22:31:34,668 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:31:34,669 INFO L276 IsEmpty]: Start isEmpty. Operand 289 states and 437 transitions. [2020-10-27 22:31:34,671 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:34,671 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:34,671 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-27 22:31:34,671 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable33 [2020-10-27 22:31:34,671 INFO L429 AbstractCegarLoop]: === Iteration 35 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:34,672 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:34,672 INFO L82 PathProgramCache]: Analyzing trace with hash -663894752, now seen corresponding path program 10 times [2020-10-27 22:31:34,672 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:34,672 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128871448] [2020-10-27 22:31:34,672 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:34,682 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:34,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:34,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:34,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:34,902 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:34,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:34,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,027 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:35,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,586 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:38,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3902 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:31:38,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:38,635 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:31:38,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:38,639 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:38,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:31:38,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:38,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:31:38,646 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:38,649 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,697 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,815 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,823 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,859 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:38,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:39,275 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:39,720 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:39,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:40,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:40,285 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3551 [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:42,198 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:31:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:42,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:42,199 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:42,241 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:42,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:42,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:42,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,376 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1130 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:43,377 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:43,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:43,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:43,466 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:43,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:43,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:43,624 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:43,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:43,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:43,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 22:31:43,651 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:31:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:43,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:43,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:43,783 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:43,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:43,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:43,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:43,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:31:43,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:43,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:43,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:43,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:43,884 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:43,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,894 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,894 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:31:43,894 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:43,894 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:31:43,894 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:43,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:31:43,895 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:43,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:31:43,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:43,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:43,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:31:43,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:43,978 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:43,978 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:44,085 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 18 proven. 34 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 22:31:44,085 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128871448] [2020-10-27 22:31:44,085 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:44,085 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 22:31:44,086 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037429142] [2020-10-27 22:31:44,086 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 22:31:44,086 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:44,087 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 22:31:44,087 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=453, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:31:44,087 INFO L87 Difference]: Start difference. First operand 289 states and 437 transitions. Second operand 23 states. [2020-10-27 22:31:44,604 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 55 [2020-10-27 22:31:44,773 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 51 [2020-10-27 22:31:45,103 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 51 DAG size of output: 50 [2020-10-27 22:31:45,485 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-27 22:31:45,656 WARN L193 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 53 [2020-10-27 22:31:45,904 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-27 22:31:46,082 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 55 DAG size of output: 54 [2020-10-27 22:31:46,824 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:46,825 INFO L93 Difference]: Finished difference Result 337 states and 505 transitions. [2020-10-27 22:31:46,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:31:46,826 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-27 22:31:46,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:46,829 INFO L225 Difference]: With dead ends: 337 [2020-10-27 22:31:46,829 INFO L226 Difference]: Without dead ends: 332 [2020-10-27 22:31:46,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=207, Invalid=1275, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:31:46,831 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 332 states. [2020-10-27 22:31:46,863 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 332 to 302. [2020-10-27 22:31:46,864 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-10-27 22:31:46,866 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 458 transitions. [2020-10-27 22:31:46,866 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 458 transitions. Word has length 65 [2020-10-27 22:31:46,866 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:46,866 INFO L481 AbstractCegarLoop]: Abstraction has 302 states and 458 transitions. [2020-10-27 22:31:46,866 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 22:31:46,866 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 458 transitions. [2020-10-27 22:31:46,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:46,869 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:46,869 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 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] [2020-10-27 22:31:46,869 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable34 [2020-10-27 22:31:46,869 INFO L429 AbstractCegarLoop]: === Iteration 36 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:46,870 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:46,870 INFO L82 PathProgramCache]: Analyzing trace with hash 1475899168, now seen corresponding path program 11 times [2020-10-27 22:31:46,870 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:46,870 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [503533363] [2020-10-27 22:31:46,870 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:46,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:46,890 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,114 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:47,948 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:48,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:49,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:51,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:51,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:31:51,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:31:51,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 22:31:51,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:31:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:31:51,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:31:51,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:51,934 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:31:51,935 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:51,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:51,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:31:51,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:51,941 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:31:51,945 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:51,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,021 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,049 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,145 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 876 [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:52,823 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:31:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:52,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:31:52,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:52,861 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:52,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:52,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,959 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:52,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:53,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:53,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:53,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:53,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 11 [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1187 [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:31:54,053 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:54,054 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:31:54,054 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:54,113 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:54,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:54,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,179 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 370 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:54,489 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:31:54,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:54,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:54,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:54,577 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,640 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,640 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:31:54,640 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 22:31:54,640 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 22:31:54,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 22:31:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:54,641 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:31:54,641 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:54,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:31:54,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:54,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:54,796 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:54,877 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:31:54,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:54,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,890 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:31:54,891 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:54,966 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:31:54,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:54,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:54,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:31:54,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:31:54,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:31:54,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:31:55,062 INFO L134 CoverageAnalysis]: Checked inductivity of 65 backedges. 7 proven. 45 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 22:31:55,062 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [503533363] [2020-10-27 22:31:55,062 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:31:55,062 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 22:31:55,062 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1259553607] [2020-10-27 22:31:55,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 22:31:55,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:31:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 22:31:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=456, Unknown=0, NotChecked=0, Total=506 [2020-10-27 22:31:55,063 INFO L87 Difference]: Start difference. First operand 302 states and 458 transitions. Second operand 23 states. [2020-10-27 22:31:55,581 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 53 [2020-10-27 22:31:57,688 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:31:57,689 INFO L93 Difference]: Finished difference Result 333 states and 499 transitions. [2020-10-27 22:31:57,689 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:31:57,689 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 65 [2020-10-27 22:31:57,690 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:31:57,691 INFO L225 Difference]: With dead ends: 333 [2020-10-27 22:31:57,691 INFO L226 Difference]: Without dead ends: 328 [2020-10-27 22:31:57,692 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 158 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=200, Invalid=1282, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:31:57,693 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 328 states. [2020-10-27 22:31:57,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 328 to 305. [2020-10-27 22:31:57,724 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 305 states. [2020-10-27 22:31:57,727 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 305 states to 305 states and 463 transitions. [2020-10-27 22:31:57,727 INFO L78 Accepts]: Start accepts. Automaton has 305 states and 463 transitions. Word has length 65 [2020-10-27 22:31:57,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:31:57,727 INFO L481 AbstractCegarLoop]: Abstraction has 305 states and 463 transitions. [2020-10-27 22:31:57,727 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 22:31:57,727 INFO L276 IsEmpty]: Start isEmpty. Operand 305 states and 463 transitions. [2020-10-27 22:31:57,730 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2020-10-27 22:31:57,730 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:31:57,730 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:31:57,730 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable35 [2020-10-27 22:31:57,730 INFO L429 AbstractCegarLoop]: === Iteration 37 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:31:57,732 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:31:57,732 INFO L82 PathProgramCache]: Analyzing trace with hash -1687236736, now seen corresponding path program 12 times [2020-10-27 22:31:57,732 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:31:57,732 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1885466157] [2020-10-27 22:31:57,732 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:31:57,743 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:31:57,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:57,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:57,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:57,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:57,992 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,004 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:58,347 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:31:59,014 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,387 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 87 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3643 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 60 [2020-10-27 22:32:01,388 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:01,438 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:32:01,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:01,440 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:01,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:32:01,442 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:01,442 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 22:32:01,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:32:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:01,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:32:01,443 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:01,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:32:01,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:01,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,522 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,536 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,551 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,579 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:01,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:32:03,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1711 [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:32:03,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:03,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 22:32:03,291 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,292 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:32:03,292 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:03,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,412 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,412 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:32:03,412 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:32:03,413 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:03,479 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,504 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,504 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:32:03,504 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,504 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:32:03,505 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:32:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,505 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:32:03,505 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,604 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:03,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,609 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:32:03,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 48 [2020-10-27 22:32:03,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,700 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 22:32:03,701 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 22:32:03,772 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:03,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:03,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:03,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:32:03,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:03,780 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:32:03,780 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 22:32:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:03,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:32:03,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:03,870 INFO L134 CoverageAnalysis]: Checked inductivity of 67 backedges. 6 proven. 34 refuted. 0 times theorem prover too weak. 27 trivial. 0 not checked. [2020-10-27 22:32:03,870 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1885466157] [2020-10-27 22:32:03,870 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:32:03,870 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 22:32:03,870 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690429131] [2020-10-27 22:32:03,871 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 22:32:03,871 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:32:03,871 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 22:32:03,871 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=378, Unknown=0, NotChecked=0, Total=420 [2020-10-27 22:32:03,872 INFO L87 Difference]: Start difference. First operand 305 states and 463 transitions. Second operand 21 states. [2020-10-27 22:32:06,111 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:32:06,111 INFO L93 Difference]: Finished difference Result 342 states and 512 transitions. [2020-10-27 22:32:06,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 22:32:06,112 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 65 [2020-10-27 22:32:06,112 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:32:06,115 INFO L225 Difference]: With dead ends: 342 [2020-10-27 22:32:06,116 INFO L226 Difference]: Without dead ends: 337 [2020-10-27 22:32:06,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 11 SyntacticMatches, 2 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 145 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=166, Invalid=1166, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 22:32:06,117 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 337 states. [2020-10-27 22:32:06,148 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 337 to 312. [2020-10-27 22:32:06,149 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 312 states. [2020-10-27 22:32:06,151 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 312 states to 312 states and 474 transitions. [2020-10-27 22:32:06,151 INFO L78 Accepts]: Start accepts. Automaton has 312 states and 474 transitions. Word has length 65 [2020-10-27 22:32:06,152 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:32:06,152 INFO L481 AbstractCegarLoop]: Abstraction has 312 states and 474 transitions. [2020-10-27 22:32:06,152 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 22:32:06,152 INFO L276 IsEmpty]: Start isEmpty. Operand 312 states and 474 transitions. [2020-10-27 22:32:06,154 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 22:32:06,154 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:32:06,155 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 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 22:32:06,155 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable36 [2020-10-27 22:32:06,155 INFO L429 AbstractCegarLoop]: === Iteration 38 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:32:06,155 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:32:06,155 INFO L82 PathProgramCache]: Analyzing trace with hash -300812878, now seen corresponding path program 14 times [2020-10-27 22:32:06,156 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:32:06,156 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1780257871] [2020-10-27 22:32:06,156 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:32:06,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:06,175 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,566 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,578 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,589 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,671 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:06,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 88 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 14 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3997 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 16 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 22:32:10,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:10,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 22:32:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:10,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1 [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 22:32:10,220 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:10,221 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 22:32:10,221 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:10,222 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-10-27 22:32:10,226 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,368 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,385 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,409 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,443 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 15 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2560 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 22:32:12,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:12,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:12,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:12,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,941 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:12,972 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,054 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 762 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 22:32:13,594 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:13,634 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:13,638 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:13,641 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,708 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,718 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:13,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 341 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 22:32:13,981 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:14,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:14,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:14,055 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,081 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,090 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:14,202 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 22:32:14,202 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 22:32:14,202 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 22:32:14,202 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 22:32:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:14,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 22:32:14,203 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:14,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:14,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:14,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:14,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 22:32:14,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:14,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 22:32:14,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 22:32:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:14,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 22:32:14,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:14,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 22:32:14,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:14,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:14,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:32:14,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:14,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 22:32:14,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 22:32:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 22:32:14,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 22:32:14,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:14,535 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 56 [2020-10-27 22:32:14,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:14,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 22:32:14,540 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 22:32:14,622 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 32 proven. 43 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 22:32:14,622 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1780257871] [2020-10-27 22:32:14,622 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 22:32:14,622 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-27 22:32:14,622 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1483122025] [2020-10-27 22:32:14,623 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 22:32:14,623 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 22:32:14,623 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 22:32:14,623 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=48, Invalid=414, Unknown=0, NotChecked=0, Total=462 [2020-10-27 22:32:14,623 INFO L87 Difference]: Start difference. First operand 312 states and 474 transitions. Second operand 22 states. [2020-10-27 22:32:16,113 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 22:32:16,283 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 22:32:16,963 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 22:32:16,963 INFO L93 Difference]: Finished difference Result 381 states and 578 transitions. [2020-10-27 22:32:16,964 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 22:32:16,964 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 66 [2020-10-27 22:32:16,964 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 22:32:16,967 INFO L225 Difference]: With dead ends: 381 [2020-10-27 22:32:16,967 INFO L226 Difference]: Without dead ends: 376 [2020-10-27 22:32:16,968 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 156 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=210, Invalid=1272, Unknown=0, NotChecked=0, Total=1482 [2020-10-27 22:32:16,969 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 376 states. [2020-10-27 22:32:17,009 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 376 to 315. [2020-10-27 22:32:17,009 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 315 states. [2020-10-27 22:32:17,011 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 315 states to 315 states and 479 transitions. [2020-10-27 22:32:17,012 INFO L78 Accepts]: Start accepts. Automaton has 315 states and 479 transitions. Word has length 66 [2020-10-27 22:32:17,012 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 22:32:17,012 INFO L481 AbstractCegarLoop]: Abstraction has 315 states and 479 transitions. [2020-10-27 22:32:17,012 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 22:32:17,012 INFO L276 IsEmpty]: Start isEmpty. Operand 315 states and 479 transitions. [2020-10-27 22:32:17,015 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 67 [2020-10-27 22:32:17,015 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 22:32:17,016 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 22:32:17,016 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable37 [2020-10-27 22:32:17,016 INFO L429 AbstractCegarLoop]: === Iteration 39 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 22:32:17,016 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 22:32:17,016 INFO L82 PathProgramCache]: Analyzing trace with hash 2092440146, now seen corresponding path program 15 times [2020-10-27 22:32:17,016 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 22:32:17,017 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [691284166] [2020-10-27 22:32:17,017 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 22:32:17,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 22:32:17,037 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,465 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:17,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 22:32:18,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking...