/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 04:08:50,875 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 04:08:50,878 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 04:08:50,937 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 04:08:50,938 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 04:08:50,944 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 04:08:50,946 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 04:08:50,953 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 04:08:50,955 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 04:08:50,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 04:08:50,958 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 04:08:50,959 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 04:08:50,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 04:08:50,961 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 04:08:50,962 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 04:08:50,963 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 04:08:50,964 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 04:08:50,966 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 04:08:50,983 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 04:08:50,985 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 04:08:50,987 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 04:08:50,990 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 04:08:50,991 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 04:08:50,992 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 04:08:50,995 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 04:08:50,996 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 04:08:50,996 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 04:08:50,997 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 04:08:50,998 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 04:08:50,999 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 04:08:51,000 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 04:08:51,001 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 04:08:51,001 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 04:08:51,003 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 04:08:51,004 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 04:08:51,004 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 04:08:51,005 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 04:08:51,006 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 04:08:51,006 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 04:08:51,007 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 04:08:51,008 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 04:08:51,014 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 04:08:51,060 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 04:08:51,060 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 04:08:51,065 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 04:08:51,065 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 04:08:51,065 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 04:08:51,066 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 04:08:51,066 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 04:08:51,066 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 04:08:51,066 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 04:08:51,066 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 04:08:51,068 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 04:08:51,068 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 04:08:51,068 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 04:08:51,068 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 04:08:51,069 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 04:08:51,069 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 04:08:51,069 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 04:08:51,069 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 04:08:51,069 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 04:08:51,070 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 04:08:51,070 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 04:08:51,070 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 04:08:51,070 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 04:08:51,071 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 04:08:51,071 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 04:08:51,071 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 04:08:51,071 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 04:08:51,072 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 04:08:51,072 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 04:08:51,072 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 04:08:51,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 04:08:51,536 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 04:08:51,539 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 04:08:51,541 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 04:08:51,541 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 04:08:51,542 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-10-27 04:08:51,631 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53120a596/ff26c9698f3949519df2b91aa34b3656/FLAG9a06ff8ce [2020-10-27 04:08:52,247 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 04:08:52,248 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive-simple/sum_20x0-1.c [2020-10-27 04:08:52,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53120a596/ff26c9698f3949519df2b91aa34b3656/FLAG9a06ff8ce [2020-10-27 04:08:52,613 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/53120a596/ff26c9698f3949519df2b91aa34b3656 [2020-10-27 04:08:52,618 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 04:08:52,624 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 04:08:52,626 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 04:08:52,626 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 04:08:52,630 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 04:08:52,631 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,634 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@342a4e7b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52, skipping insertion in model container [2020-10-27 04:08:52,635 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,643 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 04:08:52,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 04:08:52,812 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:08:52,822 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 04:08:52,844 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 04:08:52,860 INFO L208 MainTranslator]: Completed translation [2020-10-27 04:08:52,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52 WrapperNode [2020-10-27 04:08:52,861 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 04:08:52,862 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 04:08:52,862 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 04:08:52,862 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 04:08:52,874 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,874 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,881 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,882 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,887 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,889 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,890 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (1/1) ... [2020-10-27 04:08:52,892 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 04:08:52,893 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 04:08:52,894 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 04:08:52,894 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 04:08:52,895 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (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 04:08:52,968 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 04:08:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 04:08:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 04:08:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure sum [2020-10-27 04:08:52,969 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 04:08:52,969 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure sum [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 04:08:52,970 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 04:08:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 04:08:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 04:08:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 04:08:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 04:08:52,971 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 04:08:53,217 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 04:08:53,217 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 04:08:53,220 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:08:53 BoogieIcfgContainer [2020-10-27 04:08:53,220 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 04:08:53,222 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 04:08:53,223 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 04:08:53,226 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 04:08:53,227 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 04:08:52" (1/3) ... [2020-10-27 04:08:53,228 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be4f478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:08:53, skipping insertion in model container [2020-10-27 04:08:53,228 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 04:08:52" (2/3) ... [2020-10-27 04:08:53,229 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@be4f478 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 04:08:53, skipping insertion in model container [2020-10-27 04:08:53,229 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 04:08:53" (3/3) ... [2020-10-27 04:08:53,231 INFO L111 eAbstractionObserver]: Analyzing ICFG sum_20x0-1.c [2020-10-27 04:08:53,245 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 04:08:53,251 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 04:08:53,268 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 04:08:53,349 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 04:08:53,350 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 04:08:53,350 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 04:08:53,353 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 04:08:53,353 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 04:08:53,353 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 04:08:53,354 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 04:08:53,354 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 04:08:53,399 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states. [2020-10-27 04:08:53,416 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2020-10-27 04:08:53,417 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:53,418 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:53,418 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:53,437 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:53,437 INFO L82 PathProgramCache]: Analyzing trace with hash -2012080153, now seen corresponding path program 1 times [2020-10-27 04:08:53,465 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:53,466 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1560800856] [2020-10-27 04:08:53,466 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:53,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:53,661 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:53,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:53,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:08:53,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:53,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 280 [2020-10-27 04:08:53,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:53,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:08:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:53,915 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:08:53,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 04:08:54,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:54,041 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,055 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,055 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:54,055 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:08:54,056 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:54,056 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:54,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:54,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:54,068 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:54,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,078 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,094 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:54,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:08:54,095 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:08:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:54,095 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:08:54,096 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:54,130 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 04:08:54,131 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1560800856] [2020-10-27 04:08:54,133 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 04:08:54,134 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-27 04:08:54,135 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [562927222] [2020-10-27 04:08:54,139 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-27 04:08:54,140 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:54,154 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-27 04:08:54,155 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-10-27 04:08:54,158 INFO L87 Difference]: Start difference. First operand 25 states. Second operand 6 states. [2020-10-27 04:08:54,416 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:54,417 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2020-10-27 04:08:54,418 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-27 04:08:54,419 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 15 [2020-10-27 04:08:54,420 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:54,429 INFO L225 Difference]: With dead ends: 36 [2020-10-27 04:08:54,430 INFO L226 Difference]: Without dead ends: 20 [2020-10-27 04:08:54,434 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:08:54,453 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-27 04:08:54,479 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-27 04:08:54,480 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-27 04:08:54,481 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 21 transitions. [2020-10-27 04:08:54,483 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 21 transitions. Word has length 15 [2020-10-27 04:08:54,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:54,484 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 21 transitions. [2020-10-27 04:08:54,484 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-27 04:08:54,484 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 21 transitions. [2020-10-27 04:08:54,486 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-10-27 04:08:54,486 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:54,486 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:54,487 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 04:08:54,487 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:54,488 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:54,488 INFO L82 PathProgramCache]: Analyzing trace with hash -292229313, now seen corresponding path program 1 times [2020-10-27 04:08:54,489 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:54,489 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [470320587] [2020-10-27 04:08:54,489 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:54,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,763 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:08:54,763 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,763 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 250 [2020-10-27 04:08:54,764 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,764 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:08:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:54,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 11 [2020-10-27 04:08:54,765 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:08:54,855 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:54,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,880 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,880 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:54,880 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,880 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 04:08:54,881 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:54,881 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:54,881 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:54,889 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:54,900 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:08:54,958 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:08:54,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 04:08:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:54,959 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 04:08:54,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:54,979 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:54,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:54,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:54,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:54,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:54,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:54,997 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 04:08:54,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:08:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:54,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:08:54,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:55,033 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 04:08:55,034 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [470320587] [2020-10-27 04:08:55,037 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:08:55,037 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 04:08:55,038 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [142741796] [2020-10-27 04:08:55,039 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 04:08:55,040 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:55,041 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 04:08:55,042 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-10-27 04:08:55,044 INFO L87 Difference]: Start difference. First operand 20 states and 21 transitions. Second operand 8 states. [2020-10-27 04:08:55,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:55,267 INFO L93 Difference]: Finished difference Result 28 states and 29 transitions. [2020-10-27 04:08:55,267 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 04:08:55,268 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 21 [2020-10-27 04:08:55,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:55,269 INFO L225 Difference]: With dead ends: 28 [2020-10-27 04:08:55,269 INFO L226 Difference]: Without dead ends: 23 [2020-10-27 04:08:55,271 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:08:55,271 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2020-10-27 04:08:55,277 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2020-10-27 04:08:55,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23 states. [2020-10-27 04:08:55,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 24 transitions. [2020-10-27 04:08:55,279 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 24 transitions. Word has length 21 [2020-10-27 04:08:55,279 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:55,279 INFO L481 AbstractCegarLoop]: Abstraction has 23 states and 24 transitions. [2020-10-27 04:08:55,280 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 04:08:55,280 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 24 transitions. [2020-10-27 04:08:55,281 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-10-27 04:08:55,281 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:55,281 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:55,281 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 04:08:55,281 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:55,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:55,282 INFO L82 PathProgramCache]: Analyzing trace with hash 1887732007, now seen corresponding path program 2 times [2020-10-27 04:08:55,282 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:55,283 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [621983420] [2020-10-27 04:08:55,283 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:55,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:55,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:55,501 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:55,501 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:08:55,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:55,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 04:08:55,502 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:08:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:55,502 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:08:55,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:55,568 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:55,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:55,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:55,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:55,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:55,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:55,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:08:55,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:55,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:55,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:55,579 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:55,584 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:55,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:55,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:55,664 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:55,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:08:55,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:55,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:08:55,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:08:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:55,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 04:08:55,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:55,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:55,708 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:55,719 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:55,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:55,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:08:55,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:55,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 04:08:55,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:55,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:08:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:55,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:08:55,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:08:55,782 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:55,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:55,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:55,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:55,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:55,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:08:55,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:08:55,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:55,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:08:55,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:55,816 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 2 proven. 8 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2020-10-27 04:08:55,816 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [621983420] [2020-10-27 04:08:55,817 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:08:55,817 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 04:08:55,817 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1775381776] [2020-10-27 04:08:55,818 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 04:08:55,818 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:55,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 04:08:55,819 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2020-10-27 04:08:55,819 INFO L87 Difference]: Start difference. First operand 23 states and 24 transitions. Second operand 9 states. [2020-10-27 04:08:56,054 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:56,054 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2020-10-27 04:08:56,055 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 04:08:56,055 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 27 [2020-10-27 04:08:56,056 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:56,056 INFO L225 Difference]: With dead ends: 31 [2020-10-27 04:08:56,057 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 04:08:56,057 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:08:56,058 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 04:08:56,064 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 04:08:56,064 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 04:08:56,065 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2020-10-27 04:08:56,065 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 27 [2020-10-27 04:08:56,066 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:56,066 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2020-10-27 04:08:56,066 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 04:08:56,066 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2020-10-27 04:08:56,067 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 04:08:56,067 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:56,068 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:56,068 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 04:08:56,068 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:56,068 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:56,069 INFO L82 PathProgramCache]: Analyzing trace with hash 779050623, now seen corresponding path program 3 times [2020-10-27 04:08:56,069 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:56,069 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [59649417] [2020-10-27 04:08:56,069 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:56,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:08:56,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 04:08:56,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,290 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:56,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:56,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:56,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:56,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,379 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,379 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:08:56,379 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,379 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 04:08:56,379 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:08:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:56,380 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 04:08:56,380 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:56,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:08:56,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:08:56,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:08:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:56,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:08:56,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:56,482 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,510 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,510 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:08:56,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:08:56,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:08:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:56,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:08:56,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,524 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:56,526 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:56,536 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:56,536 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:56,536 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:56,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:08:56,537 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:08:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:56,537 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:08:56,537 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:56,553 INFO L134 CoverageAnalysis]: Checked inductivity of 30 backedges. 2 proven. 19 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-27 04:08:56,554 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [59649417] [2020-10-27 04:08:56,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:08:56,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 04:08:56,555 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [104948329] [2020-10-27 04:08:56,555 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 04:08:56,555 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:56,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 04:08:56,556 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=66, Unknown=0, NotChecked=0, Total=90 [2020-10-27 04:08:56,556 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand 10 states. [2020-10-27 04:08:56,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:56,819 INFO L93 Difference]: Finished difference Result 34 states and 35 transitions. [2020-10-27 04:08:56,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 04:08:56,820 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-27 04:08:56,820 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:56,821 INFO L225 Difference]: With dead ends: 34 [2020-10-27 04:08:56,822 INFO L226 Difference]: Without dead ends: 29 [2020-10-27 04:08:56,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=73, Invalid=167, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:08:56,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2020-10-27 04:08:56,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2020-10-27 04:08:56,828 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 04:08:56,829 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2020-10-27 04:08:56,830 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 33 [2020-10-27 04:08:56,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:56,830 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2020-10-27 04:08:56,830 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 04:08:56,830 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2020-10-27 04:08:56,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 04:08:56,832 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:56,832 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:56,832 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 04:08:56,832 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:56,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:56,833 INFO L82 PathProgramCache]: Analyzing trace with hash -184104345, now seen corresponding path program 4 times [2020-10-27 04:08:56,833 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:56,833 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [221775119] [2020-10-27 04:08:56,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:56,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:56,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,076 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:08:57,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 04:08:57,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:08:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:57,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:08:57,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:57,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:57,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:57,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:57,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:57,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,140 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,244 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,245 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:08:57,245 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,245 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 04:08:57,245 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,245 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 04:08:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:57,246 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 04:08:57,246 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,266 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:57,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 04:08:57,352 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:08:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:57,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:08:57,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:08:57,381 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:57,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,390 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,472 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,473 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:08:57,473 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,473 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:08:57,473 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:08:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:57,474 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:08:57,474 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:57,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,532 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:08:57,532 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,532 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-27 04:08:57,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:08:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:57,533 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:08:57,533 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,553 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:57,556 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:57,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:57,568 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:57,568 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:57,569 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:08:57,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:57,592 INFO L134 CoverageAnalysis]: Checked inductivity of 52 backedges. 3 proven. 32 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 04:08:57,593 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [221775119] [2020-10-27 04:08:57,593 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:08:57,593 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:08:57,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1773257807] [2020-10-27 04:08:57,594 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:08:57,594 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:57,595 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:08:57,595 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=80, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:08:57,595 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand 11 states. [2020-10-27 04:08:58,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:58,052 INFO L93 Difference]: Finished difference Result 37 states and 38 transitions. [2020-10-27 04:08:58,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 04:08:58,052 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 39 [2020-10-27 04:08:58,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:58,055 INFO L225 Difference]: With dead ends: 37 [2020-10-27 04:08:58,055 INFO L226 Difference]: Without dead ends: 32 [2020-10-27 04:08:58,056 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 34 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=94, Invalid=212, Unknown=0, NotChecked=0, Total=306 [2020-10-27 04:08:58,056 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2020-10-27 04:08:58,062 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 32. [2020-10-27 04:08:58,062 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 04:08:58,063 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 33 transitions. [2020-10-27 04:08:58,063 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 33 transitions. Word has length 39 [2020-10-27 04:08:58,064 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:58,064 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 33 transitions. [2020-10-27 04:08:58,064 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:08:58,071 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 33 transitions. [2020-10-27 04:08:58,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 04:08:58,073 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:58,073 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 5, 5, 5, 5, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:58,073 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 04:08:58,073 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:58,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:58,074 INFO L82 PathProgramCache]: Analyzing trace with hash -6214209, now seen corresponding path program 5 times [2020-10-27 04:08:58,074 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:58,075 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1086657064] [2020-10-27 04:08:58,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:58,088 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,100 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:58,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:58,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:08:58,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:58,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 315 [2020-10-27 04:08:58,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:08:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:58,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:08:58,406 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:58,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:58,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,450 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:58,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:58,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:58,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:58,456 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:08:58,456 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:58,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:58,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:58,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:58,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:08:58,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:58,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:58,605 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:08:58,605 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:58,605 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 04:08:58,605 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 04:08:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:08:58,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:08:58,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:58,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:58,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:58,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:58,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:08:58,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:58,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:08:58,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:58,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:08:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:58,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:08:58,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:58,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:58,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:58,870 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:58,870 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:08:58,870 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:58,870 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 04:08:58,871 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:08:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:58,871 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:08:58,872 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:58,926 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:58,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:58,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:59,021 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:59,022 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:08:59,022 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:59,022 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:08:59,022 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:08:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:59,023 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:08:59,023 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:59,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:59,059 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:59,061 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:59,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:59,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:08:59,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:59,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:08:59,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:08:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:59,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:08:59,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:59,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:08:59,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:59,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:59,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:08:59,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:59,155 INFO L134 CoverageAnalysis]: Checked inductivity of 80 backedges. 3 proven. 46 refuted. 0 times theorem prover too weak. 31 trivial. 0 not checked. [2020-10-27 04:08:59,156 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1086657064] [2020-10-27 04:08:59,157 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:08:59,157 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12] total 12 [2020-10-27 04:08:59,157 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [787916162] [2020-10-27 04:08:59,158 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-27 04:08:59,158 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:08:59,159 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-27 04:08:59,159 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2020-10-27 04:08:59,159 INFO L87 Difference]: Start difference. First operand 32 states and 33 transitions. Second operand 12 states. [2020-10-27 04:08:59,578 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:08:59,578 INFO L93 Difference]: Finished difference Result 40 states and 41 transitions. [2020-10-27 04:08:59,579 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 04:08:59,579 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 45 [2020-10-27 04:08:59,581 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:08:59,583 INFO L225 Difference]: With dead ends: 40 [2020-10-27 04:08:59,584 INFO L226 Difference]: Without dead ends: 35 [2020-10-27 04:08:59,584 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 47 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=118, Invalid=262, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:08:59,585 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2020-10-27 04:08:59,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2020-10-27 04:08:59,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 04:08:59,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 36 transitions. [2020-10-27 04:08:59,598 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 36 transitions. Word has length 45 [2020-10-27 04:08:59,600 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:08:59,600 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 36 transitions. [2020-10-27 04:08:59,600 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-27 04:08:59,600 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 36 transitions. [2020-10-27 04:08:59,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 04:08:59,602 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:08:59,602 INFO L422 BasicCegarLoop]: trace histogram [7, 7, 6, 6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:08:59,603 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 04:08:59,603 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:08:59,603 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:08:59,604 INFO L82 PathProgramCache]: Analyzing trace with hash -2097613913, now seen corresponding path program 6 times [2020-10-27 04:08:59,604 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:08:59,604 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2020866209] [2020-10-27 04:08:59,604 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:08:59,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:59,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:59,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:59,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:08:59,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:59,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 313 [2020-10-27 04:08:59,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:08:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:08:59,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:08:59,935 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:59,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:08:59,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:08:59,985 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:08:59,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:08:59,988 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:08:59,989 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:08:59,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:08:59,992 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:00,001 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,177 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:00,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 173 [2020-10-27 04:09:00,178 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 04:09:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:00,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 04:09:00,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,203 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,355 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,355 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:00,355 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:00,356 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,384 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:00,502 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,502 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 110 [2020-10-27 04:09:00,503 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,503 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:00,503 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,526 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,593 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,594 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:00,594 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,594 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:09:00,594 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,594 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:00,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,613 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,617 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,620 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:00,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:09:00,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:00,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,678 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:00,703 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,703 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:00,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,721 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:00,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:00,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:00,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:00,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:00,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:00,734 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:00,766 INFO L134 CoverageAnalysis]: Checked inductivity of 114 backedges. 14 proven. 61 refuted. 0 times theorem prover too weak. 39 trivial. 0 not checked. [2020-10-27 04:09:00,767 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2020866209] [2020-10-27 04:09:00,767 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:00,767 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 04:09:00,767 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [312644238] [2020-10-27 04:09:00,768 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 04:09:00,768 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:00,769 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 04:09:00,769 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=111, Unknown=0, NotChecked=0, Total=156 [2020-10-27 04:09:00,769 INFO L87 Difference]: Start difference. First operand 35 states and 36 transitions. Second operand 13 states. [2020-10-27 04:09:01,280 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:01,280 INFO L93 Difference]: Finished difference Result 43 states and 44 transitions. [2020-10-27 04:09:01,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 04:09:01,281 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-27 04:09:01,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:01,283 INFO L225 Difference]: With dead ends: 43 [2020-10-27 04:09:01,283 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 04:09:01,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 62 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=145, Invalid=317, Unknown=0, NotChecked=0, Total=462 [2020-10-27 04:09:01,285 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 04:09:01,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2020-10-27 04:09:01,291 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-27 04:09:01,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 39 transitions. [2020-10-27 04:09:01,292 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 39 transitions. Word has length 51 [2020-10-27 04:09:01,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:01,293 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 39 transitions. [2020-10-27 04:09:01,293 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 04:09:01,293 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 39 transitions. [2020-10-27 04:09:01,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 04:09:01,295 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:01,295 INFO L422 BasicCegarLoop]: trace histogram [8, 8, 7, 7, 7, 7, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:01,295 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 04:09:01,295 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:01,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:01,296 INFO L82 PathProgramCache]: Analyzing trace with hash -437625601, now seen corresponding path program 7 times [2020-10-27 04:09:01,296 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:01,296 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [369179335] [2020-10-27 04:09:01,297 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:01,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:01,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 352 [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:01,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:09:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:01,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 04:09:01,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:01,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:01,713 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:01,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:01,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:01,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:01,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:01,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:01,731 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:01,739 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:01,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:01,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:01,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 234 [2020-10-27 04:09:01,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 04:09:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 62 [2020-10-27 04:09:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:01,994 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,002 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:02,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-27 04:09:02,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:02,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,191 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,336 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:02,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 136 [2020-10-27 04:09:02,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,337 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:02,337 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,372 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,377 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:02,480 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 04:09:02,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:02,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:02,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 04:09:02,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:02,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,602 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,645 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:02,645 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,645 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:09:02,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,646 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:02,646 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,667 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,672 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,729 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,730 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:02,730 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,730 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-27 04:09:02,730 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,730 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,731 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:02,731 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,756 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:02,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:02,761 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:02,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:02,768 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:02,768 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:02,768 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:02,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:02,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:02,769 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:02,802 INFO L134 CoverageAnalysis]: Checked inductivity of 154 backedges. 0 proven. 99 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2020-10-27 04:09:02,803 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [369179335] [2020-10-27 04:09:02,803 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:02,803 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 04:09:02,803 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1680498367] [2020-10-27 04:09:02,804 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 04:09:02,804 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:02,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 04:09:02,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=54, Invalid=128, Unknown=0, NotChecked=0, Total=182 [2020-10-27 04:09:02,805 INFO L87 Difference]: Start difference. First operand 38 states and 39 transitions. Second operand 14 states. [2020-10-27 04:09:03,281 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:03,281 INFO L93 Difference]: Finished difference Result 46 states and 47 transitions. [2020-10-27 04:09:03,281 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:09:03,282 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 57 [2020-10-27 04:09:03,282 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:03,283 INFO L225 Difference]: With dead ends: 46 [2020-10-27 04:09:03,283 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 04:09:03,284 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 79 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=175, Invalid=377, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:09:03,284 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 04:09:03,290 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 41. [2020-10-27 04:09:03,290 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2020-10-27 04:09:03,291 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 42 transitions. [2020-10-27 04:09:03,291 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 42 transitions. Word has length 57 [2020-10-27 04:09:03,292 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:03,292 INFO L481 AbstractCegarLoop]: Abstraction has 41 states and 42 transitions. [2020-10-27 04:09:03,292 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 04:09:03,292 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 42 transitions. [2020-10-27 04:09:03,293 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 04:09:03,293 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:03,293 INFO L422 BasicCegarLoop]: trace histogram [9, 9, 8, 8, 8, 8, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:03,293 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 04:09:03,293 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:03,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:03,294 INFO L82 PathProgramCache]: Analyzing trace with hash 331021543, now seen corresponding path program 8 times [2020-10-27 04:09:03,294 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:03,294 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1209112852] [2020-10-27 04:09:03,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:03,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:03,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:03,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:03,748 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:03,748 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:03,748 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 437 [2020-10-27 04:09:03,748 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:09:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:03,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:09:03,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:03,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:03,795 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:03,800 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:03,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:03,801 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:03,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:03,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:03,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:04,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:04,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:04,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:04,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 242 [2020-10-27 04:09:04,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 04:09:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:04,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-27 04:09:04,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:04,116 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:04,126 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:04,143 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:04,434 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:04,434 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:04,434 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:04,434 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 304 [2020-10-27 04:09:04,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:04,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:04,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:04,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:04,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:04,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:04,677 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:04,678 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:04,678 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:04,678 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 04:09:04,678 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:04,678 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:04,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:04,679 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:04,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:04,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:04,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:04,851 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:04,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:04,853 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:04,853 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:04,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:04,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:04,881 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:04,964 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:04,964 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:04,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:04,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:04,987 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:04,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:04,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:05,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:05,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:05,077 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:05,081 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:05,083 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:05,122 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:05,122 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:05,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:05,123 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:09:05,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:05,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:05,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:05,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:05,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:05,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:05,205 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:05,208 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:05,208 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:05,209 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 57 [2020-10-27 04:09:05,209 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:05,209 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:05,210 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:05,210 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:05,230 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:05,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:05,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:05,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:05,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:05,242 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:05,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:05,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:05,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:05,243 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:05,243 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:05,302 INFO L134 CoverageAnalysis]: Checked inductivity of 200 backedges. 18 proven. 124 refuted. 0 times theorem prover too weak. 58 trivial. 0 not checked. [2020-10-27 04:09:05,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1209112852] [2020-10-27 04:09:05,303 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:05,303 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:09:05,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2111259210] [2020-10-27 04:09:05,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:09:05,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:05,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:09:05,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=173, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:09:05,305 INFO L87 Difference]: Start difference. First operand 41 states and 42 transitions. Second operand 16 states. [2020-10-27 04:09:05,921 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:05,921 INFO L93 Difference]: Finished difference Result 49 states and 50 transitions. [2020-10-27 04:09:05,922 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 04:09:05,922 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 63 [2020-10-27 04:09:05,922 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:05,923 INFO L225 Difference]: With dead ends: 49 [2020-10-27 04:09:05,923 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 04:09:05,924 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=221, Invalid=481, Unknown=0, NotChecked=0, Total=702 [2020-10-27 04:09:05,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 04:09:05,931 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 44. [2020-10-27 04:09:05,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 04:09:05,932 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2020-10-27 04:09:05,932 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 63 [2020-10-27 04:09:05,932 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:05,932 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2020-10-27 04:09:05,933 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:09:05,933 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2020-10-27 04:09:05,934 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-10-27 04:09:05,934 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:05,934 INFO L422 BasicCegarLoop]: trace histogram [10, 10, 9, 9, 9, 9, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:05,934 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 04:09:05,934 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:05,935 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:05,935 INFO L82 PathProgramCache]: Analyzing trace with hash -1458901953, now seen corresponding path program 9 times [2020-10-27 04:09:05,935 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:05,935 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836525606] [2020-10-27 04:09:05,935 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:05,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:05,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:06,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:06,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:06,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:06,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 491 [2020-10-27 04:09:06,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:09:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:06,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-27 04:09:06,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:06,502 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:06,506 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:06,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:06,512 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:06,512 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:06,512 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:06,512 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:09:06,512 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:06,513 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:06,513 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:06,521 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:06,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:06,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:06,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:09:06,888 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:06,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 78 [2020-10-27 04:09:06,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:06,914 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:06,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:06,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:07,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:07,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:07,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:07,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-27 04:09:07,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:07,218 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:07,218 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:07,255 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:07,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:07,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:07,531 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:07,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:07,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:07,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 245 [2020-10-27 04:09:07,532 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:07,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:07,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:07,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:07,562 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:07,568 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:07,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:07,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:07,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:07,782 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:07,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:07,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:07,814 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:07,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:07,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:07,932 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:07,932 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:07,954 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:07,959 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:07,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:08,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:08,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:08,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 112 [2020-10-27 04:09:08,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:08,075 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:08,101 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:08,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:08,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:08,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:08,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:08,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:08,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 04:09:08,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:08,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:08,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:08,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:08,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:08,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:08,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:08,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:08,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:08,264 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:08,264 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 04:09:08,264 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:08,264 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:08,265 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:08,265 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:08,288 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:08,292 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:08,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:09:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:08,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:08,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:08,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:08,389 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:08,389 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:08,389 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:08,390 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:08,390 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:08,390 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:08,391 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:08,391 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:08,451 INFO L134 CoverageAnalysis]: Checked inductivity of 252 backedges. 24 proven. 144 refuted. 0 times theorem prover too weak. 84 trivial. 0 not checked. [2020-10-27 04:09:08,451 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836525606] [2020-10-27 04:09:08,452 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:08,452 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 04:09:08,452 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [658675802] [2020-10-27 04:09:08,453 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 04:09:08,453 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:08,453 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 04:09:08,454 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=75, Invalid=165, Unknown=0, NotChecked=0, Total=240 [2020-10-27 04:09:08,454 INFO L87 Difference]: Start difference. First operand 44 states and 45 transitions. Second operand 16 states. [2020-10-27 04:09:09,092 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:09,092 INFO L93 Difference]: Finished difference Result 52 states and 53 transitions. [2020-10-27 04:09:09,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 04:09:09,092 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 69 [2020-10-27 04:09:09,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:09,094 INFO L225 Difference]: With dead ends: 52 [2020-10-27 04:09:09,094 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 04:09:09,095 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 119 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=244, Invalid=512, Unknown=0, NotChecked=0, Total=756 [2020-10-27 04:09:09,099 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 04:09:09,106 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2020-10-27 04:09:09,107 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 47 states. [2020-10-27 04:09:09,108 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 48 transitions. [2020-10-27 04:09:09,108 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 48 transitions. Word has length 69 [2020-10-27 04:09:09,108 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:09,108 INFO L481 AbstractCegarLoop]: Abstraction has 47 states and 48 transitions. [2020-10-27 04:09:09,108 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 04:09:09,108 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 48 transitions. [2020-10-27 04:09:09,110 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 76 [2020-10-27 04:09:09,110 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:09,110 INFO L422 BasicCegarLoop]: trace histogram [11, 11, 10, 10, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:09,113 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 04:09:09,113 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:09,113 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:09,114 INFO L82 PathProgramCache]: Analyzing trace with hash 749528615, now seen corresponding path program 10 times [2020-10-27 04:09:09,114 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:09,114 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1662826451] [2020-10-27 04:09:09,114 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:09,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:09,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:09,732 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:09,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 591 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:09:09,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:09,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:09,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:09,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:09,786 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:09,786 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:09,786 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:09,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:09,791 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:09,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:09,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:10,152 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 347 [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 04:09:10,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:10,154 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:09:10,154 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:10,205 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:10,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:10,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:10,535 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:10,535 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:10,535 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:10,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:10,579 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:10,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:10,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:10,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:10,850 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:10,850 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:10,850 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 260 [2020-10-27 04:09:10,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:10,851 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:10,851 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:10,871 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:10,879 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:10,886 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,064 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,064 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:11,066 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,066 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 04:09:11,067 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,067 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:11,067 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,089 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,096 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,246 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,246 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:11,247 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,247 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 04:09:11,247 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:11,247 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,248 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:11,248 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:11,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,376 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:11,376 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,402 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,409 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:11,500 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,500 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 04:09:11,500 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:11,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,522 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,598 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,599 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:11,599 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,599 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 04:09:11,599 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,599 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:11,600 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,624 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,632 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,664 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:11,664 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,664 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 04:09:11,664 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,665 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:11,665 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:11,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,713 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:11,713 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 04:09:11,714 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,714 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:11,715 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:11,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:11,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:11,744 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:11,750 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:11,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:11,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:11,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:09:11,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:11,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:11,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:11,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:11,825 INFO L134 CoverageAnalysis]: Checked inductivity of 310 backedges. 16 proven. 173 refuted. 0 times theorem prover too weak. 121 trivial. 0 not checked. [2020-10-27 04:09:11,826 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1662826451] [2020-10-27 04:09:11,826 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:11,826 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 04:09:11,826 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [680631288] [2020-10-27 04:09:11,829 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 04:09:11,829 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:11,830 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 04:09:11,831 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=87, Invalid=185, Unknown=0, NotChecked=0, Total=272 [2020-10-27 04:09:11,831 INFO L87 Difference]: Start difference. First operand 47 states and 48 transitions. Second operand 17 states. [2020-10-27 04:09:12,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:12,494 INFO L93 Difference]: Finished difference Result 55 states and 56 transitions. [2020-10-27 04:09:12,494 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 04:09:12,494 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 75 [2020-10-27 04:09:12,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:12,496 INFO L225 Difference]: With dead ends: 55 [2020-10-27 04:09:12,496 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 04:09:12,497 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 23 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 143 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=283, Invalid=587, Unknown=0, NotChecked=0, Total=870 [2020-10-27 04:09:12,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 04:09:12,512 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 50. [2020-10-27 04:09:12,512 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 04:09:12,513 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 51 transitions. [2020-10-27 04:09:12,516 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 51 transitions. Word has length 75 [2020-10-27 04:09:12,516 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:12,517 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 51 transitions. [2020-10-27 04:09:12,517 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 04:09:12,517 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 51 transitions. [2020-10-27 04:09:12,518 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 82 [2020-10-27 04:09:12,519 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:12,519 INFO L422 BasicCegarLoop]: trace histogram [12, 12, 11, 11, 11, 11, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:12,519 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 04:09:12,519 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:12,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:12,520 INFO L82 PathProgramCache]: Analyzing trace with hash 1422056319, now seen corresponding path program 11 times [2020-10-27 04:09:12,520 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:12,520 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [623830546] [2020-10-27 04:09:12,520 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:12,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:12,552 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:13,138 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:13,139 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:13,139 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:13,139 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 596 [2020-10-27 04:09:13,139 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:09:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:13,140 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 04:09:13,140 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:13,196 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:13,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:13,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:13,203 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:13,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:13,206 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:13,217 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:13,228 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:13,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 94 [2020-10-27 04:09:13,620 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:13,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:13,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:13,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:14,075 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:14,075 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:14,075 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 385 [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:14,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:14,108 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:14,118 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:14,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:14,480 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:14,480 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:14,481 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:14,481 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 358 [2020-10-27 04:09:14,481 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:14,481 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:14,482 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:14,482 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:14,508 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:14,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:14,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:14,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:14,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 271 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:14,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:14,821 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:14,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:14,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:15,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 04:09:15,020 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:15,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,054 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,064 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:15,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 138 [2020-10-27 04:09:15,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:15,205 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,234 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,239 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:15,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 04:09:15,337 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:15,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,363 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,444 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:15,444 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:15,445 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,538 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,538 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:15,539 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,539 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:09:15,540 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,540 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,541 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:15,541 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,565 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,571 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,599 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:15,600 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:15,601 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,625 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,629 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,645 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:15,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 04:09:15,646 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:15,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,670 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:15,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:15,673 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:15,679 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:15,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:15,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:15,763 INFO L134 CoverageAnalysis]: Checked inductivity of 374 backedges. 52 proven. 211 refuted. 0 times theorem prover too weak. 111 trivial. 0 not checked. [2020-10-27 04:09:15,764 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [623830546] [2020-10-27 04:09:15,764 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:15,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:09:15,765 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2113006610] [2020-10-27 04:09:15,766 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:09:15,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:15,766 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:09:15,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=103, Invalid=239, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:09:15,767 INFO L87 Difference]: Start difference. First operand 50 states and 51 transitions. Second operand 19 states. [2020-10-27 04:09:16,543 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:16,543 INFO L93 Difference]: Finished difference Result 58 states and 59 transitions. [2020-10-27 04:09:16,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-10-27 04:09:16,544 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 81 [2020-10-27 04:09:16,544 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:16,546 INFO L225 Difference]: With dead ends: 58 [2020-10-27 04:09:16,546 INFO L226 Difference]: Without dead ends: 53 [2020-10-27 04:09:16,547 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 168 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=341, Invalid=715, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 04:09:16,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-10-27 04:09:16,562 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-10-27 04:09:16,562 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-10-27 04:09:16,563 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 54 transitions. [2020-10-27 04:09:16,563 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 54 transitions. Word has length 81 [2020-10-27 04:09:16,563 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:16,563 INFO L481 AbstractCegarLoop]: Abstraction has 53 states and 54 transitions. [2020-10-27 04:09:16,563 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:09:16,563 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 54 transitions. [2020-10-27 04:09:16,564 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 88 [2020-10-27 04:09:16,564 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:16,565 INFO L422 BasicCegarLoop]: trace histogram [13, 13, 12, 12, 12, 12, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:16,565 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 04:09:16,565 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:16,565 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:16,565 INFO L82 PathProgramCache]: Analyzing trace with hash -550588569, now seen corresponding path program 12 times [2020-10-27 04:09:16,566 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:16,566 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [35953615] [2020-10-27 04:09:16,566 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:16,580 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:16,597 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:17,299 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:17,299 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:17,299 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 715 [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 66 [2020-10-27 04:09:17,300 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:17,347 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:17,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:17,350 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:17,353 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:17,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:17,354 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:17,356 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:17,369 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:17,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:17,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 436 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 04:09:17,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:17,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:17,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:17,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:18,243 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:18,243 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:18,243 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:18,243 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 04:09:18,244 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:18,244 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:18,244 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:18,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:18,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:18,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:18,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:18,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:18,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:18,648 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 361 [2020-10-27 04:09:18,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:18,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:18,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:18,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:18,677 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:18,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:18,938 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 259 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:18,939 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:18,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:18,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:18,975 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,176 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:19,176 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 206 [2020-10-27 04:09:19,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:19,177 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,382 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:19,382 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,382 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 169 [2020-10-27 04:09:19,382 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,382 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,383 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:19,383 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,405 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,427 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,548 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,548 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:19,548 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 119 [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:19,549 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,570 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,575 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,666 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:19,666 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 04:09:19,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,667 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:19,667 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,762 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,762 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:19,762 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,762 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 04:09:19,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:19,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:19,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:09:19,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:19,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,863 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:19,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 04:09:19,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:19,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,920 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,936 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:19,936 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,936 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 04:09:19,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:19,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:19,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:19,979 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:19,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:19,984 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:19,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:19,985 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:19,985 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:19,985 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:19,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:19,986 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:19,986 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:20,060 INFO L134 CoverageAnalysis]: Checked inductivity of 444 backedges. 38 proven. 262 refuted. 0 times theorem prover too weak. 144 trivial. 0 not checked. [2020-10-27 04:09:20,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [35953615] [2020-10-27 04:09:20,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:20,060 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 04:09:20,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98896412] [2020-10-27 04:09:20,061 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 04:09:20,061 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:20,062 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 04:09:20,062 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=114, Invalid=228, Unknown=0, NotChecked=0, Total=342 [2020-10-27 04:09:20,063 INFO L87 Difference]: Start difference. First operand 53 states and 54 transitions. Second operand 19 states. [2020-10-27 04:09:20,916 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:20,916 INFO L93 Difference]: Finished difference Result 61 states and 62 transitions. [2020-10-27 04:09:20,917 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-10-27 04:09:20,917 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 87 [2020-10-27 04:09:20,917 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:20,918 INFO L225 Difference]: With dead ends: 61 [2020-10-27 04:09:20,919 INFO L226 Difference]: Without dead ends: 56 [2020-10-27 04:09:20,920 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 194 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=370, Invalid=752, Unknown=0, NotChecked=0, Total=1122 [2020-10-27 04:09:20,920 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2020-10-27 04:09:20,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2020-10-27 04:09:20,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 04:09:20,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 57 transitions. [2020-10-27 04:09:20,927 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 57 transitions. Word has length 87 [2020-10-27 04:09:20,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:20,928 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 57 transitions. [2020-10-27 04:09:20,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 04:09:20,928 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 57 transitions. [2020-10-27 04:09:20,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 94 [2020-10-27 04:09:20,929 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:20,929 INFO L422 BasicCegarLoop]: trace histogram [14, 14, 13, 13, 13, 13, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:20,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 04:09:20,930 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:20,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:20,930 INFO L82 PathProgramCache]: Analyzing trace with hash 953297599, now seen corresponding path program 13 times [2020-10-27 04:09:20,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:20,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [951173018] [2020-10-27 04:09:20,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:20,947 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:20,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:21,697 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:21,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:21,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:21,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 747 [2020-10-27 04:09:21,698 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:09:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:21,698 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:21,698 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:21,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:21,770 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:21,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:21,774 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:21,774 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:21,774 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:21,774 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:21,775 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:21,775 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:21,775 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:21,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:21,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:22,316 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 524 [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 30 [2020-10-27 04:09:22,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:22,318 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 110 [2020-10-27 04:09:22,318 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:22,341 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:22,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:22,366 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:22,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:22,756 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:22,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:22,810 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:22,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 266 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:23,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:23,100 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:23,110 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:23,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,315 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:23,315 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,315 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 04:09:23,315 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,316 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:23,316 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:23,334 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:23,342 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:23,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,507 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 164 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:23,508 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:23,546 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:23,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:23,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,684 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,684 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:23,684 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,684 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-27 04:09:23,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:23,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:23,711 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:23,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:23,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:23,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:23,852 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:23,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:23,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:23,982 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:23,983 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:23,983 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:23,983 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 04:09:23,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:23,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:23,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:23,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,018 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,024 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:24,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 125 [2020-10-27 04:09:24,152 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:24,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,153 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:24,153 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,180 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,186 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,192 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:24,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 04:09:24,281 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:24,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:24,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,313 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,404 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:24,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:09:24,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:24,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,449 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,488 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,489 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:24,489 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,489 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 42 [2020-10-27 04:09:24,489 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,490 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:24,490 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:24,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,521 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:24,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:09:24,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:24,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,554 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:24,554 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,593 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:24,595 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:24,596 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:24,602 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:24,602 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:24,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:24,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 04:09:24,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:24,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:24,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:24,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 04:09:24,726 INFO L134 CoverageAnalysis]: Checked inductivity of 520 backedges. 30 proven. 306 refuted. 0 times theorem prover too weak. 184 trivial. 0 not checked. [2020-10-27 04:09:24,726 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [951173018] [2020-10-27 04:09:24,726 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:24,727 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 04:09:24,727 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [506681398] [2020-10-27 04:09:24,727 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 04:09:24,727 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:24,728 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 04:09:24,728 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=129, Invalid=251, Unknown=0, NotChecked=0, Total=380 [2020-10-27 04:09:24,728 INFO L87 Difference]: Start difference. First operand 56 states and 57 transitions. Second operand 20 states. [2020-10-27 04:09:25,588 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:25,589 INFO L93 Difference]: Finished difference Result 64 states and 65 transitions. [2020-10-27 04:09:25,593 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-27 04:09:25,593 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 93 [2020-10-27 04:09:25,594 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:25,594 INFO L225 Difference]: With dead ends: 64 [2020-10-27 04:09:25,594 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 04:09:25,596 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 63 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 224 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=418, Invalid=842, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 04:09:25,596 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 04:09:25,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2020-10-27 04:09:25,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 04:09:25,604 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 60 transitions. [2020-10-27 04:09:25,604 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 60 transitions. Word has length 93 [2020-10-27 04:09:25,605 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:25,605 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 60 transitions. [2020-10-27 04:09:25,605 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 04:09:25,605 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 60 transitions. [2020-10-27 04:09:25,606 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 100 [2020-10-27 04:09:25,606 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:25,606 INFO L422 BasicCegarLoop]: trace histogram [15, 15, 14, 14, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:25,606 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 04:09:25,606 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:25,607 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:25,607 INFO L82 PathProgramCache]: Analyzing trace with hash -929015641, now seen corresponding path program 14 times [2020-10-27 04:09:25,607 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:25,607 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743901886] [2020-10-27 04:09:25,607 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:25,626 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:25,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 563 [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 04:09:26,196 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:26,197 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 04:09:26,197 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:26,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:26,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:26,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:26,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:26,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:26,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:26,253 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:26,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:26,288 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:26,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:26,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:26,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:26,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-27 04:09:26,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 32 [2020-10-27 04:09:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:26,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 118 [2020-10-27 04:09:26,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:26,846 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:26,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:26,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:27,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:09:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:27,347 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:09:27,347 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:27,364 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:27,374 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:27,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:27,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:27,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:27,686 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:27,686 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 310 [2020-10-27 04:09:27,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:27,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:27,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:27,718 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:27,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:27,734 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:27,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:27,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:27,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:27,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 244 [2020-10-27 04:09:27,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:27,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:27,974 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:28,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:28,012 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:28,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:28,338 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:28,338 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:28,338 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:28,338 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 308 [2020-10-27 04:09:28,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:28,339 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:28,339 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:28,362 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:28,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:28,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:28,646 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:28,646 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:28,646 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:28,646 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 273 [2020-10-27 04:09:28,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:28,647 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:28,647 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:28,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:28,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:28,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:28,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:28,837 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:28,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:28,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:28,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:28,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:28,975 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:28,975 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:28,975 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:28,975 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 108 [2020-10-27 04:09:28,976 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:28,976 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:28,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:28,999 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,004 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,008 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:29,098 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,198 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:29,199 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:29,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,223 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:29,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 04:09:29,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:29,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 6 [2020-10-27 04:09:29,310 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,345 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,345 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:29,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 04:09:29,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:29,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,397 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,397 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:29,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 04:09:29,398 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,398 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:29,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,430 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,434 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,444 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:29,445 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:29,446 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,472 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:29,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:29,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:29,479 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:29,480 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:29,480 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:29,557 INFO L134 CoverageAnalysis]: Checked inductivity of 602 backedges. 49 proven. 351 refuted. 0 times theorem prover too weak. 202 trivial. 0 not checked. [2020-10-27 04:09:29,557 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743901886] [2020-10-27 04:09:29,558 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:29,558 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21] total 21 [2020-10-27 04:09:29,558 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609186378] [2020-10-27 04:09:29,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-27 04:09:29,559 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:29,559 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-27 04:09:29,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=145, Invalid=275, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:09:29,559 INFO L87 Difference]: Start difference. First operand 59 states and 60 transitions. Second operand 21 states. [2020-10-27 04:09:30,544 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:30,544 INFO L93 Difference]: Finished difference Result 67 states and 68 transitions. [2020-10-27 04:09:30,544 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-27 04:09:30,545 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 99 [2020-10-27 04:09:30,545 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:30,546 INFO L225 Difference]: With dead ends: 67 [2020-10-27 04:09:30,546 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 04:09:30,548 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 254 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=469, Invalid=937, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 04:09:30,548 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 04:09:30,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-27 04:09:30,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 04:09:30,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 63 transitions. [2020-10-27 04:09:30,554 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 63 transitions. Word has length 99 [2020-10-27 04:09:30,554 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:30,555 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 63 transitions. [2020-10-27 04:09:30,555 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-27 04:09:30,555 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 63 transitions. [2020-10-27 04:09:30,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 106 [2020-10-27 04:09:30,556 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:30,556 INFO L422 BasicCegarLoop]: trace histogram [16, 16, 15, 15, 15, 15, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:30,556 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 04:09:30,556 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:30,556 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:30,557 INFO L82 PathProgramCache]: Analyzing trace with hash -386344449, now seen corresponding path program 15 times [2020-10-27 04:09:30,557 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:30,557 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2056881178] [2020-10-27 04:09:30,557 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:30,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:30,584 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:31,213 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:31,213 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 638 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 81 [2020-10-27 04:09:31,214 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:31,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:31,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:31,261 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:31,263 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:31,264 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:31,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:31,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:31,287 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:31,696 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 418 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 34 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 126 [2020-10-27 04:09:31,697 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:31,736 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:31,750 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:31,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:32,452 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:32,459 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:32,459 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:32,459 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 699 [2020-10-27 04:09:32,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 04:09:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:32,460 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:09:32,460 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:32,494 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:32,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:32,521 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:33,078 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 567 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:33,079 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:09:33,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:33,117 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:33,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:33,141 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 303 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:33,435 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:33,454 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:33,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:33,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:33,698 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:33,698 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:33,698 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:33,699 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:33,723 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:33,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:33,738 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:33,936 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 203 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:33,937 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:33,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:33,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:33,969 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:34,114 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 149 [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:34,115 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,144 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,150 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,155 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:34,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:34,279 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,305 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,315 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,471 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,472 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:34,472 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,472 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 159 [2020-10-27 04:09:34,472 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,472 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,473 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:34,473 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,505 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,661 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,662 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:34,662 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,662 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 04:09:34,662 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,662 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:34,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:34,663 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,696 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:34,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 04:09:34,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:34,787 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,884 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:34,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,885 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 04:09:34,885 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,885 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:34,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,913 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:34,949 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:34,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:34,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:34,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 32 [2020-10-27 04:09:34,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:34,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:34,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:34,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:34,977 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:34,981 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:34,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:35,003 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:35,003 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:35,003 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:35,003 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:09:35,003 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:35,004 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:35,004 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:35,030 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:35,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:35,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:35,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:35,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:35,043 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:35,044 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:35,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:35,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:35,074 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:35,077 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:35,078 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:35,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:35,161 INFO L134 CoverageAnalysis]: Checked inductivity of 690 backedges. 74 proven. 402 refuted. 0 times theorem prover too weak. 214 trivial. 0 not checked. [2020-10-27 04:09:35,161 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2056881178] [2020-10-27 04:09:35,162 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:35,162 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:09:35,162 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [481035412] [2020-10-27 04:09:35,162 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:09:35,163 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:35,163 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:09:35,163 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=165, Invalid=341, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:09:35,164 INFO L87 Difference]: Start difference. First operand 62 states and 63 transitions. Second operand 23 states. [2020-10-27 04:09:36,172 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:36,172 INFO L93 Difference]: Finished difference Result 70 states and 71 transitions. [2020-10-27 04:09:36,174 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 04:09:36,174 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 105 [2020-10-27 04:09:36,174 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:36,175 INFO L225 Difference]: With dead ends: 70 [2020-10-27 04:09:36,175 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 04:09:36,176 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 71 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 304 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=543, Invalid=1097, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 04:09:36,177 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 04:09:36,182 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2020-10-27 04:09:36,182 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-27 04:09:36,183 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 66 transitions. [2020-10-27 04:09:36,183 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 66 transitions. Word has length 105 [2020-10-27 04:09:36,183 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:36,184 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 66 transitions. [2020-10-27 04:09:36,184 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:09:36,184 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 66 transitions. [2020-10-27 04:09:36,185 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-10-27 04:09:36,185 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:36,185 INFO L422 BasicCegarLoop]: trace histogram [17, 17, 16, 16, 16, 16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:36,185 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 04:09:36,185 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:36,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:36,186 INFO L82 PathProgramCache]: Analyzing trace with hash 308404711, now seen corresponding path program 16 times [2020-10-27 04:09:36,186 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:36,186 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [101531446] [2020-10-27 04:09:36,186 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:36,206 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 700 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 04:09:36,911 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:36,953 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:36,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:36,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:36,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:36,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:36,958 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:36,971 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:36,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:37,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:37,419 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 04:09:37,419 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 445 [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 36 [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 134 [2020-10-27 04:09:37,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:37,450 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:37,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:37,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:38,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 613 [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 04:09:38,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,122 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:38,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,552 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:38,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:38,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 417 [2020-10-27 04:09:38,553 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 04:09:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:38,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:09:38,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,576 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:38,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,599 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:38,939 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 349 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:09:38,940 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:38,962 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:38,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:38,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:39,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 254 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:39,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:39,260 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:39,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:39,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:39,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:39,596 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:39,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:39,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:39,783 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 178 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:39,784 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:39,812 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:39,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:39,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 219 [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:40,041 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:40,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,071 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,281 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,281 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:40,281 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,281 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 04:09:40,282 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,282 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:40,282 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,312 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,318 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,419 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:40,420 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,445 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,549 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:40,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 04:09:40,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:40,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,573 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,659 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:40,659 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,659 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:09:40,659 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,660 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:40,660 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,692 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,727 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,727 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:40,727 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:40,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,766 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:40,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 04:09:40,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:40,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,872 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:40,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,873 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:09:40,873 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:40,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,903 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:40,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 04:09:40,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,921 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:40,921 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:40,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:40,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:40,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:40,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:40,957 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:40,957 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:40,958 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 04:09:40,958 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:40,958 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:40,959 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:41,065 INFO L134 CoverageAnalysis]: Checked inductivity of 784 backedges. 14 proven. 436 refuted. 0 times theorem prover too weak. 334 trivial. 0 not checked. [2020-10-27 04:09:41,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [101531446] [2020-10-27 04:09:41,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:41,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [23] total 23 [2020-10-27 04:09:41,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2114690175] [2020-10-27 04:09:41,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 23 states [2020-10-27 04:09:41,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:41,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2020-10-27 04:09:41,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=180, Invalid=326, Unknown=0, NotChecked=0, Total=506 [2020-10-27 04:09:41,068 INFO L87 Difference]: Start difference. First operand 65 states and 66 transitions. Second operand 23 states. [2020-10-27 04:09:42,112 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:42,112 INFO L93 Difference]: Finished difference Result 73 states and 74 transitions. [2020-10-27 04:09:42,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 04:09:42,113 INFO L78 Accepts]: Start accepts. Automaton has 23 states. Word has length 111 [2020-10-27 04:09:42,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:42,114 INFO L225 Difference]: With dead ends: 73 [2020-10-27 04:09:42,115 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 04:09:42,116 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 75 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 322 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=580, Invalid=1142, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 04:09:42,116 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 04:09:42,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 68. [2020-10-27 04:09:42,122 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 04:09:42,123 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 69 transitions. [2020-10-27 04:09:42,123 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 69 transitions. Word has length 111 [2020-10-27 04:09:42,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:42,124 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 69 transitions. [2020-10-27 04:09:42,124 INFO L482 AbstractCegarLoop]: Interpolant automaton has 23 states. [2020-10-27 04:09:42,124 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 69 transitions. [2020-10-27 04:09:42,125 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 04:09:42,125 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:42,125 INFO L422 BasicCegarLoop]: trace histogram [18, 18, 17, 17, 17, 17, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:42,125 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 04:09:42,125 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:42,126 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:42,126 INFO L82 PathProgramCache]: Analyzing trace with hash 1022814527, now seen corresponding path program 17 times [2020-10-27 04:09:42,126 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:42,126 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [96415714] [2020-10-27 04:09:42,126 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:42,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:42,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 765 [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 04:09:42,911 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:42,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 91 [2020-10-27 04:09:42,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:42,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:42,953 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:42,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:42,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:42,957 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:42,957 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:42,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:42,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:42,994 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:43,605 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 625 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 38 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 142 [2020-10-27 04:09:43,606 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:43,633 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:43,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:43,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 473 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 04:09:44,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:44,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,174 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 423 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:44,589 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 04:09:44,590 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:44,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:44,622 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:44,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 356 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:44,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:09:44,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:45,001 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:45,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:45,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:45,326 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 314 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:09:45,327 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:45,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:45,359 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:45,371 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:45,699 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:45,700 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:45,700 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:45,720 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:45,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:45,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:45,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:45,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 212 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:45,943 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:45,964 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:45,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:45,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,176 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,177 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:46,177 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,177 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 04:09:46,177 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,177 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,178 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:46,178 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,209 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 143 [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:46,354 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:46,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,378 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,392 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:46,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,552 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,708 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,708 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:46,708 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,708 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 148 [2020-10-27 04:09:46,708 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,709 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:46,709 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,828 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 80 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,829 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:46,830 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:46,915 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:46,915 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:46,915 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:46,915 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:09:46,916 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:46,916 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:46,916 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:46,943 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:46,948 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:46,950 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:47,008 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:47,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:47,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:47,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 04:09:47,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:47,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:47,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:47,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:47,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:47,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:47,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:47,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:47,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:47,093 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:47,093 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 04:09:47,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:47,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:47,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:47,121 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:47,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:47,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:47,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:47,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:47,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:47,176 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:47,179 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:47,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:47,190 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:47,191 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:47,191 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:47,191 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:09:47,191 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:47,191 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:47,192 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:47,192 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:47,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:47,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:47,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:47,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:47,237 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:47,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:47,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:47,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:47,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:47,332 INFO L134 CoverageAnalysis]: Checked inductivity of 884 backedges. 46 proven. 548 refuted. 0 times theorem prover too weak. 290 trivial. 0 not checked. [2020-10-27 04:09:47,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [96415714] [2020-10-27 04:09:47,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:47,332 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 04:09:47,332 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1505216630] [2020-10-27 04:09:47,333 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 04:09:47,333 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:47,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 04:09:47,334 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=199, Invalid=353, Unknown=0, NotChecked=0, Total=552 [2020-10-27 04:09:47,334 INFO L87 Difference]: Start difference. First operand 68 states and 69 transitions. Second operand 24 states. [2020-10-27 04:09:48,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:48,499 INFO L93 Difference]: Finished difference Result 76 states and 77 transitions. [2020-10-27 04:09:48,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 04:09:48,500 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 117 [2020-10-27 04:09:48,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:48,502 INFO L225 Difference]: With dead ends: 76 [2020-10-27 04:09:48,502 INFO L226 Difference]: Without dead ends: 71 [2020-10-27 04:09:48,504 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 79 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 359 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=640, Invalid=1252, Unknown=0, NotChecked=0, Total=1892 [2020-10-27 04:09:48,504 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 71 states. [2020-10-27 04:09:48,509 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 71 to 71. [2020-10-27 04:09:48,509 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 04:09:48,510 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 72 transitions. [2020-10-27 04:09:48,510 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 72 transitions. Word has length 117 [2020-10-27 04:09:48,510 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:48,511 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 72 transitions. [2020-10-27 04:09:48,511 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 04:09:48,511 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 72 transitions. [2020-10-27 04:09:48,511 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 124 [2020-10-27 04:09:48,512 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:48,512 INFO L422 BasicCegarLoop]: trace histogram [19, 19, 18, 18, 18, 18, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:48,512 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 04:09:48,512 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:48,512 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:48,513 INFO L82 PathProgramCache]: Analyzing trace with hash 1909672743, now seen corresponding path program 18 times [2020-10-27 04:09:48,513 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:48,513 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1345870615] [2020-10-27 04:09:48,513 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:48,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:48,553 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 169 [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 818 [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 04:09:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:49,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 04:09:49,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:49,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,403 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:49,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:49,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:49,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:49,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 655 [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:50,086 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 40 [2020-10-27 04:09:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:50,087 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 150 [2020-10-27 04:09:50,087 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:50,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:50,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:50,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:50,676 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:50,676 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:09:50,676 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:50,676 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 548 [2020-10-27 04:09:50,677 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 04:09:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:50,677 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 04:09:50,677 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:50,705 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:50,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:50,740 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:51,256 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:51,256 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 04:09:51,256 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 529 [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 04:09:51,257 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:51,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:51,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:51,298 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 475 [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:51,766 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 04:09:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:51,767 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 04:09:51,767 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:51,787 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:51,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:51,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:52,175 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:52,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:09:52,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 371 [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:09:52,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:52,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:52,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:52,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 329 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:52,542 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:09:52,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:52,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:52,572 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:52,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 322 [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:09:52,897 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:52,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:09:52,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:52,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:52,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:52,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:53,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:09:53,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:53,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 235 [2020-10-27 04:09:53,164 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:09:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:53,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:09:53,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:53,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:53,197 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:53,206 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:53,417 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:09:53,418 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:53,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:53,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:53,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 160 [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:09:53,610 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:53,611 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:09:53,611 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:53,642 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:53,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:53,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,795 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 146 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:53,796 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:09:53,797 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:53,820 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:53,826 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:53,830 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:53,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:09:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:53,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:09:53,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:53,944 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:53,949 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:53,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,023 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:09:54,023 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:09:54,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,050 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,058 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,112 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,112 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:09:54,112 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,112 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 04:09:54,113 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:09:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,113 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:09:54,113 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,143 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,152 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:09:54,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,297 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,297 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:09:54,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 04:09:54,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:09:54,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:09:54,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,336 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,339 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:09:54,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 04:09:54,367 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:09:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:09:54,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,397 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:09:54,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 04:09:54,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:09:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:09:54,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,449 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:54,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:54,452 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:54,456 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:54,456 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:09:54,456 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:09:54,457 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:54,577 INFO L134 CoverageAnalysis]: Checked inductivity of 990 backedges. 111 proven. 549 refuted. 0 times theorem prover too weak. 330 trivial. 0 not checked. [2020-10-27 04:09:54,577 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1345870615] [2020-10-27 04:09:54,578 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:09:54,578 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 04:09:54,578 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541692263] [2020-10-27 04:09:54,578 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 04:09:54,578 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:09:54,579 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 04:09:54,579 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=219, Invalid=381, Unknown=0, NotChecked=0, Total=600 [2020-10-27 04:09:54,579 INFO L87 Difference]: Start difference. First operand 71 states and 72 transitions. Second operand 25 states. [2020-10-27 04:09:55,777 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:09:55,778 INFO L93 Difference]: Finished difference Result 79 states and 80 transitions. [2020-10-27 04:09:55,778 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 04:09:55,778 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 123 [2020-10-27 04:09:55,779 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:09:55,780 INFO L225 Difference]: With dead ends: 79 [2020-10-27 04:09:55,780 INFO L226 Difference]: Without dead ends: 74 [2020-10-27 04:09:55,782 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 83 GetRequests, 39 SyntacticMatches, 0 SemanticMatches, 44 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 398 ImplicationChecksByTransitivity, 1.3s TimeCoverageRelationStatistics Valid=703, Invalid=1367, Unknown=0, NotChecked=0, Total=2070 [2020-10-27 04:09:55,782 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-27 04:09:55,787 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-10-27 04:09:55,787 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-10-27 04:09:55,788 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 75 transitions. [2020-10-27 04:09:55,788 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 75 transitions. Word has length 123 [2020-10-27 04:09:55,789 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:09:55,789 INFO L481 AbstractCegarLoop]: Abstraction has 74 states and 75 transitions. [2020-10-27 04:09:55,789 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 04:09:55,789 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 75 transitions. [2020-10-27 04:09:55,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 130 [2020-10-27 04:09:55,790 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:09:55,790 INFO L422 BasicCegarLoop]: trace histogram [20, 20, 19, 19, 19, 19, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:09:55,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 04:09:55,790 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:09:55,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:09:55,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1351374975, now seen corresponding path program 19 times [2020-10-27 04:09:55,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:09:55,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1227663781] [2020-10-27 04:09:55,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:09:55,813 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:55,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:56,752 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:56,752 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 04:09:56,752 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 934 [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 101 [2020-10-27 04:09:56,753 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:56,801 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 04:09:56,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:56,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:56,808 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:56,808 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 04:09:56,808 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:56,808 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 04:09:56,808 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 04:09:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:56,809 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 04:09:56,809 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:56,810 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 04:09:56,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:56,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:57,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:57,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 161 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 667 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 42 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 158 [2020-10-27 04:09:57,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:57,525 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:57,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:57,557 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:58,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 153 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 630 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 41 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 151 [2020-10-27 04:09:58,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:58,190 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:58,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:58,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:58,748 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 542 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 39 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 143 [2020-10-27 04:09:58,749 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:58,768 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:58,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:58,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:59,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:59,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 137 [2020-10-27 04:09:59,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:59,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 483 [2020-10-27 04:09:59,268 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 37 [2020-10-27 04:09:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:59,268 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 135 [2020-10-27 04:09:59,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:59,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:59,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:59,313 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:09:59,704 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:09:59,704 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 04:09:59,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:09:59,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 399 [2020-10-27 04:09:59,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:09:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 04:09:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:09:59,705 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 127 [2020-10-27 04:09:59,705 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:09:59,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:09:59,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:09:59,763 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 373 [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 04:10:00,130 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:00,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 119 [2020-10-27 04:10:00,131 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,152 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:00,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,455 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 113 [2020-10-27 04:10:00,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:00,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 04:10:00,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 31 [2020-10-27 04:10:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:00,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 111 [2020-10-27 04:10:00,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,482 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:00,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 105 [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 258 [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 29 [2020-10-27 04:10:00,753 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:00,754 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 103 [2020-10-27 04:10:00,754 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:00,780 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:00,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:00,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,023 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 04:10:01,024 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,057 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 191 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 87 [2020-10-27 04:10:01,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,277 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,427 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,427 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 81 [2020-10-27 04:10:01,427 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,427 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 04:10:01,427 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-27 04:10:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,428 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 04:10:01,428 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,462 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,615 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,616 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 71 [2020-10-27 04:10:01,617 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,644 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 118 [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 63 [2020-10-27 04:10:01,772 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,803 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:01,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:01,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 57 [2020-10-27 04:10:01,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:01,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 04:10:01,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:10:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:01,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 04:10:01,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:01,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:01,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:01,938 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,007 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,008 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 49 [2020-10-27 04:10:02,008 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,008 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 04:10:02,008 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,008 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 04:10:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,009 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 47 [2020-10-27 04:10:02,009 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,042 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:02,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,050 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 41 [2020-10-27 04:10:02,096 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 04:10:02,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,133 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:02,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,139 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,172 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,172 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 33 [2020-10-27 04:10:02,172 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 04:10:02,173 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,204 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:02,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,226 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,226 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 18 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 04:10:02,227 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,259 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:02,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,273 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,273 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 04:10:02,274 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 04:10:02,311 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:10:02,312 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:10:02,315 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:10:02,316 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 04:10:02,316 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 04:10:02,316 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 04:10:02,316 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:10:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 04:10:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:10:02,317 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 04:10:02,317 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:10:02,441 INFO L134 CoverageAnalysis]: Checked inductivity of 1102 backedges. 90 proven. 650 refuted. 0 times theorem prover too weak. 362 trivial. 0 not checked. [2020-10-27 04:10:02,441 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1227663781] [2020-10-27 04:10:02,441 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:10:02,441 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 04:10:02,441 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [151340909] [2020-10-27 04:10:02,442 INFO L461 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-10-27 04:10:02,442 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:10:02,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-10-27 04:10:02,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=240, Invalid=410, Unknown=0, NotChecked=0, Total=650 [2020-10-27 04:10:02,443 INFO L87 Difference]: Start difference. First operand 74 states and 75 transitions. Second operand 26 states. [2020-10-27 04:10:03,739 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:10:03,740 INFO L93 Difference]: Finished difference Result 82 states and 83 transitions. [2020-10-27 04:10:03,740 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 04:10:03,740 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 129 [2020-10-27 04:10:03,741 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:10:03,742 INFO L225 Difference]: With dead ends: 82 [2020-10-27 04:10:03,742 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 04:10:03,744 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 87 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 46 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 439 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=769, Invalid=1487, Unknown=0, NotChecked=0, Total=2256 [2020-10-27 04:10:03,744 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 04:10:03,749 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 77. [2020-10-27 04:10:03,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 77 states. [2020-10-27 04:10:03,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 78 transitions. [2020-10-27 04:10:03,750 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 78 transitions. Word has length 129 [2020-10-27 04:10:03,750 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:10:03,750 INFO L481 AbstractCegarLoop]: Abstraction has 77 states and 78 transitions. [2020-10-27 04:10:03,750 INFO L482 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-10-27 04:10:03,751 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 78 transitions. [2020-10-27 04:10:03,751 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-10-27 04:10:03,752 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 04:10:03,752 INFO L422 BasicCegarLoop]: trace histogram [21, 21, 20, 20, 20, 20, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 04:10:03,752 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 04:10:03,752 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 04:10:03,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 04:10:03,752 INFO L82 PathProgramCache]: Analyzing trace with hash 676631655, now seen corresponding path program 20 times [2020-10-27 04:10:03,753 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 04:10:03,753 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2099198867] [2020-10-27 04:10:03,753 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 04:10:03,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 04:10:03,784 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 04:10:03,784 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 04:10:03,788 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 04:10:03,811 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:10:03 BoogieIcfgContainer [2020-10-27 04:10:03,812 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:10:03,814 INFO L168 Benchmark]: Toolchain (without parser) took 71193.54 ms. Allocated memory was 151.0 MB in the beginning and 868.2 MB in the end (delta: 717.2 MB). Free memory was 126.2 MB in the beginning and 820.2 MB in the end (delta: -694.0 MB). Peak memory consumption was 24.5 MB. Max. memory is 8.0 GB. [2020-10-27 04:10:03,814 INFO L168 Benchmark]: CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:10:03,815 INFO L168 Benchmark]: CACSL2BoogieTranslator took 235.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 04:10:03,816 INFO L168 Benchmark]: Boogie Preprocessor took 30.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:10:03,816 INFO L168 Benchmark]: RCFGBuilder took 326.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 102.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. [2020-10-27 04:10:03,817 INFO L168 Benchmark]: TraceAbstraction took 70589.31 ms. Allocated memory was 151.0 MB in the beginning and 868.2 MB in the end (delta: 717.2 MB). Free memory was 102.3 MB in the beginning and 820.2 MB in the end (delta: -717.9 MB). Peak memory consumption was 385.4 kB. Max. memory is 8.0 GB. [2020-10-27 04:10:03,820 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.67 ms. Allocated memory is still 151.0 MB. Free memory is still 123.2 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 235.14 ms. Allocated memory is still 151.0 MB. Free memory was 125.6 MB in the beginning and 116.7 MB in the end (delta: 9.0 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 30.39 ms. Allocated memory is still 151.0 MB. Free memory was 116.7 MB in the beginning and 115.3 MB in the end (delta: 1.4 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 326.85 ms. Allocated memory is still 151.0 MB. Free memory was 115.3 MB in the beginning and 102.7 MB in the end (delta: 12.6 MB). Peak memory consumption was 12.6 MB. Max. memory is 8.0 GB. * TraceAbstraction took 70589.31 ms. Allocated memory was 151.0 MB in the beginning and 868.2 MB in the end (delta: 717.2 MB). Free memory was 102.3 MB in the beginning and 820.2 MB in the end (delta: -717.9 MB). Peak memory consumption was 385.4 kB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 3]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L14] int a = 20; [L15] int b = 0; [L16] CALL, EXPR sum(a, b) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND FALSE !(n <= 0) [L9] CALL, EXPR sum(n - 1, m + 1) [L6] COND TRUE n <= 0 [L7] return m + n; [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L9] RET, EXPR sum(n - 1, m + 1) [L9] return sum(n - 1, m + 1); [L16] RET, EXPR sum(a, b) [L16] int result = sum(a, b); [L17] COND TRUE result == a + b [L18] CALL reach_error() [L3] __assert_fail("0", "sum_20x0-1.c", 3, "reach_error") - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 25 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 70.4s, OverallIterations: 21, TraceHistogramMax: 21, AutomataDifference: 14.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 263 SDtfs, 1300 SDslu, 612 SDs, 0 SdLazy, 1774 SolverSat, 736 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 3.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 980 GetRequests, 438 SyntacticMatches, 0 SemanticMatches, 542 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3302 ImplicationChecksByTransitivity, 14.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=77occurred in iteration=20, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 20 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 55.2s InterpolantComputationTime, 1575 NumberOfCodeBlocks, 1575 NumberOfCodeBlocksAsserted, 21 NumberOfCheckSat, 1420 ConstructedInterpolants, 0 QuantifiedInterpolants, 356226 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 20 InterpolantComputations, 1 PerfectInterpolantSequences, 3177/7600 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...