/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/gcd01-1.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 03:57:51,006 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 03:57:51,009 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 03:57:51,053 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 03:57:51,054 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 03:57:51,056 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 03:57:51,057 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 03:57:51,060 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 03:57:51,062 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 03:57:51,063 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 03:57:51,064 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 03:57:51,066 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 03:57:51,067 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 03:57:51,068 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 03:57:51,069 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 03:57:51,071 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 03:57:51,072 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 03:57:51,073 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 03:57:51,076 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 03:57:51,078 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 03:57:51,081 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 03:57:51,082 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 03:57:51,084 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 03:57:51,085 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 03:57:51,092 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 03:57:51,093 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 03:57:51,093 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 03:57:51,095 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 03:57:51,099 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 03:57:51,102 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 03:57:51,103 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 03:57:51,104 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 03:57:51,109 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 03:57:51,111 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 03:57:51,114 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 03:57:51,114 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 03:57:51,115 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 03:57:51,116 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 03:57:51,116 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 03:57:51,118 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 03:57:51,119 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 03:57:51,120 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 03:57:51,172 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 03:57:51,172 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 03:57:51,174 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 03:57:51,174 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 03:57:51,174 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 03:57:51,175 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 03:57:51,175 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 03:57:51,175 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 03:57:51,175 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 03:57:51,176 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 03:57:51,176 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 03:57:51,176 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 03:57:51,176 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 03:57:51,176 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 03:57:51,177 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 03:57:51,177 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 03:57:51,177 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 03:57:51,177 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 03:57:51,177 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 03:57:51,178 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 03:57:51,178 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 03:57:51,178 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 03:57:51,178 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 03:57:51,178 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 03:57:51,179 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 03:57:51,179 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 03:57:51,179 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 03:57:51,179 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 03:57:51,179 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 03:57:51,180 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 03:57:51,563 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 03:57:51,598 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 03:57:51,602 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 03:57:51,603 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 03:57:51,604 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 03:57:51,605 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/recursive/gcd01-1.c [2020-10-27 03:57:51,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8c4d7fe/8e640577f0a84941ada2bd69dcda8d46/FLAG58fe9dfb7 [2020-10-27 03:57:52,318 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 03:57:52,319 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/recursive/gcd01-1.c [2020-10-27 03:57:52,327 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8c4d7fe/8e640577f0a84941ada2bd69dcda8d46/FLAG58fe9dfb7 [2020-10-27 03:57:52,739 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/eb8c4d7fe/8e640577f0a84941ada2bd69dcda8d46 [2020-10-27 03:57:52,746 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 03:57:52,755 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 03:57:52,761 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 03:57:52,761 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 03:57:52,767 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 03:57:52,769 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:57:52" (1/1) ... [2020-10-27 03:57:52,779 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5166461a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:52, skipping insertion in model container [2020-10-27 03:57:52,779 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 03:57:52" (1/1) ... [2020-10-27 03:57:52,791 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 03:57:52,813 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 03:57:53,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:57:53,097 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 03:57:53,125 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 03:57:53,148 INFO L208 MainTranslator]: Completed translation [2020-10-27 03:57:53,148 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53 WrapperNode [2020-10-27 03:57:53,149 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 03:57:53,150 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 03:57:53,150 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 03:57:53,150 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 03:57:53,165 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,167 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,179 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,179 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,199 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,204 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,208 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (1/1) ... [2020-10-27 03:57:53,214 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 03:57:53,215 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 03:57:53,215 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 03:57:53,216 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 03:57:53,217 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (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 03:57:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 03:57:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 03:57:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 03:57:53,301 INFO L138 BoogieDeclarations]: Found implementation of procedure gcd [2020-10-27 03:57:53,302 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 03:57:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 03:57:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 03:57:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 03:57:53,302 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 03:57:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 03:57:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure gcd [2020-10-27 03:57:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 03:57:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 03:57:53,303 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 03:57:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 03:57:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 03:57:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 03:57:53,304 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 03:57:53,690 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 03:57:53,691 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-27 03:57:53,693 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:57:53 BoogieIcfgContainer [2020-10-27 03:57:53,695 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 03:57:53,697 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 03:57:53,698 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 03:57:53,703 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 03:57:53,703 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 03:57:52" (1/3) ... [2020-10-27 03:57:53,705 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561291ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:57:53, skipping insertion in model container [2020-10-27 03:57:53,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 03:57:53" (2/3) ... [2020-10-27 03:57:53,706 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@561291ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 03:57:53, skipping insertion in model container [2020-10-27 03:57:53,706 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 03:57:53" (3/3) ... [2020-10-27 03:57:53,710 INFO L111 eAbstractionObserver]: Analyzing ICFG gcd01-1.c [2020-10-27 03:57:53,723 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 03:57:53,728 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 03:57:53,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 03:57:53,808 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 03:57:53,808 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 03:57:53,809 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 03:57:53,809 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 03:57:53,809 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 03:57:53,809 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 03:57:53,809 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 03:57:53,810 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 03:57:53,836 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states. [2020-10-27 03:57:53,843 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-10-27 03:57:53,844 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:53,845 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:53,845 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:53,853 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:53,854 INFO L82 PathProgramCache]: Analyzing trace with hash -1045360095, now seen corresponding path program 1 times [2020-10-27 03:57:53,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:53,867 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [987186703] [2020-10-27 03:57:53,867 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:54,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:54,203 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:54,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:54,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:54,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 27 [2020-10-27 03:57:54,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:54,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 661 [2020-10-27 03:57:54,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:54,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 03:57:54,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:54,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 03:57:54,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:54,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:54,952 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:54,960 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:54,960 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:54,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:54,961 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 03:57:54,961 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:54,961 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:54,962 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:54,962 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:54,969 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:57:54,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:54,976 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:54,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:54,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:54,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:54,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 03:57:54,989 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 03:57:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:57:54,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 03:57:54,990 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:55,081 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 03:57:55,082 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [987186703] [2020-10-27 03:57:55,084 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:57:55,084 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 03:57:55,085 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1757204359] [2020-10-27 03:57:55,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 03:57:55,091 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:55,107 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 03:57:55,108 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2020-10-27 03:57:55,110 INFO L87 Difference]: Start difference. First operand 31 states. Second operand 7 states. [2020-10-27 03:57:55,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:55,749 INFO L93 Difference]: Finished difference Result 46 states and 56 transitions. [2020-10-27 03:57:55,750 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 03:57:55,752 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 17 [2020-10-27 03:57:55,752 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:55,762 INFO L225 Difference]: With dead ends: 46 [2020-10-27 03:57:55,763 INFO L226 Difference]: Without dead ends: 26 [2020-10-27 03:57:55,767 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=32, Invalid=78, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:57:55,788 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-27 03:57:55,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-27 03:57:55,817 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 03:57:55,819 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-27 03:57:55,821 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 17 [2020-10-27 03:57:55,821 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:55,821 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-27 03:57:55,822 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 03:57:55,822 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-27 03:57:55,824 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-27 03:57:55,824 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:55,824 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:55,825 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 03:57:55,825 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:55,826 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:55,826 INFO L82 PathProgramCache]: Analyzing trace with hash -1752822076, now seen corresponding path program 1 times [2020-10-27 03:57:55,826 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:55,827 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [532801044] [2020-10-27 03:57:55,827 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:55,846 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:55,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:56,114 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:56,114 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 28 [2020-10-27 03:57:56,115 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:56,115 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 267 [2020-10-27 03:57:56,115 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:57:56,115 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:57:56,116 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 9 [2020-10-27 03:57:56,116 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:56,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:56,202 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:56,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:56,211 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:56,211 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:56,211 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:56,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:57:56,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:56,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:56,213 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:56,217 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:57:56,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:56,221 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:56,233 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:56,234 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:57:56,234 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:56,234 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 03:57:56,234 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:56,235 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:57:56,235 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:56,268 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 03:57:56,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [532801044] [2020-10-27 03:57:56,269 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:57:56,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 03:57:56,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936177053] [2020-10-27 03:57:56,272 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 03:57:56,272 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:56,273 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 03:57:56,273 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 03:57:56,273 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 7 states. [2020-10-27 03:57:56,731 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:56,732 INFO L93 Difference]: Finished difference Result 33 states and 39 transitions. [2020-10-27 03:57:56,733 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 03:57:56,733 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 18 [2020-10-27 03:57:56,733 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:56,734 INFO L225 Difference]: With dead ends: 33 [2020-10-27 03:57:56,735 INFO L226 Difference]: Without dead ends: 28 [2020-10-27 03:57:56,736 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:57:56,736 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2020-10-27 03:57:56,744 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 26. [2020-10-27 03:57:56,744 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-27 03:57:56,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 31 transitions. [2020-10-27 03:57:56,746 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 31 transitions. Word has length 18 [2020-10-27 03:57:56,746 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:56,746 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 31 transitions. [2020-10-27 03:57:56,747 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 03:57:56,747 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 31 transitions. [2020-10-27 03:57:56,748 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 03:57:56,748 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:56,748 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:56,749 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 03:57:56,749 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:56,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:56,750 INFO L82 PathProgramCache]: Analyzing trace with hash 1214823211, now seen corresponding path program 1 times [2020-10-27 03:57:56,750 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:56,750 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [729543276] [2020-10-27 03:57:56,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:56,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:56,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:56,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,459 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:57,460 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 03:57:57,460 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:57:57,460 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 693 [2020-10-27 03:57:57,460 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:57:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 03:57:57,461 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 03:57:57,461 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:57,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:57,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:57,529 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,533 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:57,533 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:57,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:57,534 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:57:57,534 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:57,534 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:57,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:57,535 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:57,539 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:57:57,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:57,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,555 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,641 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:57,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 03:57:57,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:57,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 98 [2020-10-27 03:57:57,643 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:57:57,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 03:57:57,644 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:57,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:57:57,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:57,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:57,760 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:57,761 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:57,761 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:57,761 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 03:57:57,762 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:57,762 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:57,763 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:57,763 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:57:57,821 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 03:57:57,822 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [729543276] [2020-10-27 03:57:57,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:57:57,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 03:57:57,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1113976824] [2020-10-27 03:57:57,823 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 03:57:57,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:57,824 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 03:57:57,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2020-10-27 03:57:57,825 INFO L87 Difference]: Start difference. First operand 26 states and 31 transitions. Second operand 10 states. [2020-10-27 03:57:57,998 WARN L193 SmtUtils]: Spent 128.00 ms on a formula simplification that was a NOOP. DAG size: 34 [2020-10-27 03:57:58,212 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 38 DAG size of output: 37 [2020-10-27 03:57:58,346 WARN L193 SmtUtils]: Spent 115.00 ms on a formula simplification. DAG size of input: 42 DAG size of output: 41 [2020-10-27 03:57:58,495 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 39 [2020-10-27 03:57:58,631 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 41 DAG size of output: 40 [2020-10-27 03:57:58,911 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:58,912 INFO L93 Difference]: Finished difference Result 39 states and 48 transitions. [2020-10-27 03:57:58,912 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 03:57:58,912 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 25 [2020-10-27 03:57:58,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:58,914 INFO L225 Difference]: With dead ends: 39 [2020-10-27 03:57:58,915 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 03:57:58,917 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:57:58,917 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 03:57:58,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 29. [2020-10-27 03:57:58,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2020-10-27 03:57:58,933 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 35 transitions. [2020-10-27 03:57:58,933 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 35 transitions. Word has length 25 [2020-10-27 03:57:58,938 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:58,938 INFO L481 AbstractCegarLoop]: Abstraction has 29 states and 35 transitions. [2020-10-27 03:57:58,938 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 03:57:58,938 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 35 transitions. [2020-10-27 03:57:58,940 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-10-27 03:57:58,940 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:58,940 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:58,940 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 03:57:58,940 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:58,942 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:58,942 INFO L82 PathProgramCache]: Analyzing trace with hash -16297623, now seen corresponding path program 1 times [2020-10-27 03:57:58,942 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:58,943 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792848250] [2020-10-27 03:57:58,943 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:58,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:58,974 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:58,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,091 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,222 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:59,222 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 37 [2020-10-27 03:57:59,222 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 03:57:59,222 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 03:57:59,223 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:57:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 03:57:59,224 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 03:57:59,224 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:59,267 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:57:59,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:59,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:59,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:59,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:57:59,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:59,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:57:59,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:59,286 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:57:59,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:57:59,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 03:57:59,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:59,382 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:57:59,385 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:59,387 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,396 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:57:59,396 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:57:59,397 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:57:59,398 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:57:59,434 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 3 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 03:57:59,434 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792848250] [2020-10-27 03:57:59,435 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 03:57:59,435 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-10-27 03:57:59,435 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [62758274] [2020-10-27 03:57:59,436 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:57:59,436 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:57:59,436 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:57:59,437 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:57:59,437 INFO L87 Difference]: Start difference. First operand 29 states and 35 transitions. Second operand 9 states. [2020-10-27 03:57:59,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:57:59,848 INFO L93 Difference]: Finished difference Result 41 states and 51 transitions. [2020-10-27 03:57:59,848 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 03:57:59,849 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 25 [2020-10-27 03:57:59,849 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:57:59,850 INFO L225 Difference]: With dead ends: 41 [2020-10-27 03:57:59,850 INFO L226 Difference]: Without dead ends: 36 [2020-10-27 03:57:59,851 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=52, Invalid=130, Unknown=0, NotChecked=0, Total=182 [2020-10-27 03:57:59,852 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 36 states. [2020-10-27 03:57:59,860 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 36 to 34. [2020-10-27 03:57:59,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-27 03:57:59,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2020-10-27 03:57:59,862 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 25 [2020-10-27 03:57:59,862 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:57:59,862 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2020-10-27 03:57:59,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:57:59,862 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2020-10-27 03:57:59,864 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 03:57:59,864 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:57:59,864 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:57:59,864 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 03:57:59,864 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:57:59,865 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:57:59,865 INFO L82 PathProgramCache]: Analyzing trace with hash -962370060, now seen corresponding path program 1 times [2020-10-27 03:57:59,865 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:57:59,866 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1131004165] [2020-10-27 03:57:59,866 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:57:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:57:59,884 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:57:59,990 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,002 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 03:58:00,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 03:58:00,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 669 [2020-10-27 03:58:00,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:00,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 03:58:00,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 03:58:00,602 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:00,606 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,608 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:58:00,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:00,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,619 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:00,619 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 03:58:00,623 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:00,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,635 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:00,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:00,725 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:00,727 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:00,751 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:00,751 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:00,751 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:00,752 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:00,783 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 03:58:00,785 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1131004165] [2020-10-27 03:58:00,785 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:00,785 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 03:58:00,786 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [884075432] [2020-10-27 03:58:00,786 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 03:58:00,786 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:00,787 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 03:58:00,787 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2020-10-27 03:58:00,787 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 10 states. [2020-10-27 03:58:01,199 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:01,199 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-27 03:58:01,200 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 03:58:01,200 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 26 [2020-10-27 03:58:01,200 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:01,202 INFO L225 Difference]: With dead ends: 42 [2020-10-27 03:58:01,202 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 03:58:01,203 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=55, Invalid=185, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:58:01,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 03:58:01,209 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-27 03:58:01,210 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 03:58:01,211 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-27 03:58:01,211 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-10-27 03:58:01,211 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:01,211 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-27 03:58:01,212 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 03:58:01,212 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-27 03:58:01,213 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-10-27 03:58:01,213 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:01,213 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:01,213 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 03:58:01,213 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:01,214 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:01,214 INFO L82 PathProgramCache]: Analyzing trace with hash -712052588, now seen corresponding path program 1 times [2020-10-27 03:58:01,214 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:01,215 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1918801344] [2020-10-27 03:58:01,215 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:01,242 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:01,250 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,303 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,326 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,338 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:01,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 38 [2020-10-27 03:58:01,724 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 03:58:01,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 480 [2020-10-27 03:58:01,725 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:01,725 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:01,726 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 03:58:01,726 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 03:58:01,781 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:01,786 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:01,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:58:01,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:01,797 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:01,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:01,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,863 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 03:58:01,864 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:01,865 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:01,865 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:01,923 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:01,926 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:01,942 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:01,942 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:01,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:01,943 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 03:58:01,943 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:01,943 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:01,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:01,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:01,965 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 03:58:01,965 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1918801344] [2020-10-27 03:58:01,965 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:01,966 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9] total 9 [2020-10-27 03:58:01,966 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939735115] [2020-10-27 03:58:01,966 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-27 03:58:01,967 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:01,967 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-27 03:58:01,968 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-10-27 03:58:01,968 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 9 states. [2020-10-27 03:58:02,390 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:02,390 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2020-10-27 03:58:02,391 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 03:58:02,391 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 26 [2020-10-27 03:58:02,392 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:02,393 INFO L225 Difference]: With dead ends: 42 [2020-10-27 03:58:02,393 INFO L226 Difference]: Without dead ends: 37 [2020-10-27 03:58:02,394 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=41, Invalid=141, Unknown=0, NotChecked=0, Total=182 [2020-10-27 03:58:02,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2020-10-27 03:58:02,401 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2020-10-27 03:58:02,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 03:58:02,402 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 39 transitions. [2020-10-27 03:58:02,403 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 39 transitions. Word has length 26 [2020-10-27 03:58:02,403 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:02,403 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 39 transitions. [2020-10-27 03:58:02,403 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-27 03:58:02,403 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 39 transitions. [2020-10-27 03:58:02,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 03:58:02,405 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:02,405 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:02,405 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 03:58:02,405 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:02,406 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:02,406 INFO L82 PathProgramCache]: Analyzing trace with hash 1412676835, now seen corresponding path program 1 times [2020-10-27 03:58:02,406 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:02,406 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1862290351] [2020-10-27 03:58:02,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:02,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:02,426 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,652 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 233 [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:02,653 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 19 [2020-10-27 03:58:02,654 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 03:58:02,654 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:02,687 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:02,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:02,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,694 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:02,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:02,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:02,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:58:02,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:02,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:02,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:02,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:02,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:02,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:02,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 29 [2020-10-27 03:58:02,797 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:02,797 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 93 [2020-10-27 03:58:02,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 03:58:02,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 4 [2020-10-27 03:58:02,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-27 03:58:02,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:02,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:02,840 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:02,842 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,852 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,897 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:02,897 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 19 [2020-10-27 03:58:02,897 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 03:58:02,897 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 56 [2020-10-27 03:58:02,897 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 03:58:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 03:58:02,898 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 03:58:02,898 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:02,951 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:02,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:02,956 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:02,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:02,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 9 [2020-10-27 03:58:02,966 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:02,966 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 03:58:02,966 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 03:58:02,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:02,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 03:58:02,967 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:03,002 INFO L134 CoverageAnalysis]: Checked inductivity of 14 backedges. 10 proven. 1 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 03:58:03,002 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1862290351] [2020-10-27 03:58:03,003 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:03,003 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 03:58:03,003 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1022196530] [2020-10-27 03:58:03,004 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 03:58:03,005 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:03,006 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 03:58:03,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2020-10-27 03:58:03,006 INFO L87 Difference]: Start difference. First operand 32 states and 39 transitions. Second operand 10 states. [2020-10-27 03:58:03,743 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:03,743 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2020-10-27 03:58:03,744 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:58:03,744 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 33 [2020-10-27 03:58:03,744 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:03,745 INFO L225 Difference]: With dead ends: 51 [2020-10-27 03:58:03,745 INFO L226 Difference]: Without dead ends: 34 [2020-10-27 03:58:03,746 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=84, Invalid=188, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:58:03,747 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2020-10-27 03:58:03,764 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 32. [2020-10-27 03:58:03,764 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-10-27 03:58:03,768 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-10-27 03:58:03,769 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 33 [2020-10-27 03:58:03,769 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:03,769 INFO L481 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-10-27 03:58:03,769 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 03:58:03,769 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-10-27 03:58:03,770 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 03:58:03,770 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:03,770 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:03,770 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 03:58:03,771 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:03,771 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:03,771 INFO L82 PathProgramCache]: Analyzing trace with hash -1034931100, now seen corresponding path program 1 times [2020-10-27 03:58:03,771 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:03,772 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1995230642] [2020-10-27 03:58:03,772 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:03,787 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:03,796 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:03,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:03,864 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:03,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:04,016 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:04,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:06,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:06,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 03:58:06,951 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 03:58:06,951 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3161 [2020-10-27 03:58:06,953 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:06,953 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:06,954 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 03:58:06,954 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:07,035 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:07,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:07,036 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,039 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:07,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,048 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,134 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:07,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:07,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:07,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 03:58:07,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 03:58:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:07,135 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:07,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,174 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:07,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,241 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:07,241 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:07,241 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:07,242 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:07,271 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,289 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:07,289 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:07,289 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 03:58:07,290 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:07,290 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:07,290 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:07,332 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 4 proven. 4 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 03:58:07,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1995230642] [2020-10-27 03:58:07,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:07,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 03:58:07,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1970781253] [2020-10-27 03:58:07,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 03:58:07,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:07,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 03:58:07,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:58:07,335 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 11 states. [2020-10-27 03:58:07,846 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:07,846 INFO L93 Difference]: Finished difference Result 43 states and 51 transitions. [2020-10-27 03:58:07,847 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:58:07,847 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-27 03:58:07,848 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:07,848 INFO L225 Difference]: With dead ends: 43 [2020-10-27 03:58:07,849 INFO L226 Difference]: Without dead ends: 38 [2020-10-27 03:58:07,849 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 20 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-10-27 03:58:07,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2020-10-27 03:58:07,856 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 35. [2020-10-27 03:58:07,856 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-27 03:58:07,857 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 42 transitions. [2020-10-27 03:58:07,857 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 42 transitions. Word has length 34 [2020-10-27 03:58:07,858 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:07,858 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 42 transitions. [2020-10-27 03:58:07,858 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 03:58:07,858 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 42 transitions. [2020-10-27 03:58:07,859 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-10-27 03:58:07,859 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:07,859 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:07,860 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 03:58:07,860 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:07,860 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:07,860 INFO L82 PathProgramCache]: Analyzing trace with hash 566316068, now seen corresponding path program 2 times [2020-10-27 03:58:07,861 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:07,861 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [583161050] [2020-10-27 03:58:07,861 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:07,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:07,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:07,936 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,063 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,086 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:08,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 48 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 7 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2541 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:10,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 03:58:10,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:10,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:10,471 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:10,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:10,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:10,477 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:10,479 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:10,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:10,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:10,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:10,570 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:10,610 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:10,615 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:10,619 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:10,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:10,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:10,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 03:58:10,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:10,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:10,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:10,689 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:10,692 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:10,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:10,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:10,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:10,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:10,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 03:58:10,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:10,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:10,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:10,762 INFO L134 CoverageAnalysis]: Checked inductivity of 16 backedges. 0 proven. 8 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 03:58:10,763 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [583161050] [2020-10-27 03:58:10,763 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:10,764 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 03:58:10,764 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [210966777] [2020-10-27 03:58:10,764 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 03:58:10,766 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:10,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 03:58:10,767 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 03:58:10,767 INFO L87 Difference]: Start difference. First operand 35 states and 42 transitions. Second operand 11 states. [2020-10-27 03:58:11,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:11,478 INFO L93 Difference]: Finished difference Result 46 states and 55 transitions. [2020-10-27 03:58:11,478 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 03:58:11,478 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 34 [2020-10-27 03:58:11,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:11,482 INFO L225 Difference]: With dead ends: 46 [2020-10-27 03:58:11,482 INFO L226 Difference]: Without dead ends: 41 [2020-10-27 03:58:11,483 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=60, Invalid=246, Unknown=0, NotChecked=0, Total=306 [2020-10-27 03:58:11,484 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-27 03:58:11,498 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-27 03:58:11,499 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-27 03:58:11,500 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 43 transitions. [2020-10-27 03:58:11,500 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 43 transitions. Word has length 34 [2020-10-27 03:58:11,503 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:11,503 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 43 transitions. [2020-10-27 03:58:11,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 03:58:11,503 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 43 transitions. [2020-10-27 03:58:11,505 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 03:58:11,508 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:11,508 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:11,508 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 03:58:11,508 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:11,509 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:11,509 INFO L82 PathProgramCache]: Analyzing trace with hash -10979692, now seen corresponding path program 3 times [2020-10-27 03:58:11,509 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:11,509 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1006335811] [2020-10-27 03:58:11,509 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:11,532 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,630 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,741 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,781 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:11,953 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:12,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:12,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:12,194 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,089 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 03:58:16,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4564 [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 03:58:16,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,139 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:16,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:16,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,145 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,145 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:16,145 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:16,145 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:16,146 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:16,146 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:16,146 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:16,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:16,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,288 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,288 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:16,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:16,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 03:58:16,289 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 03:58:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:16,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:16,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,328 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:16,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:16,335 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,420 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 87 [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:16,421 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:16,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,442 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:16,446 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:16,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,496 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,496 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:16,496 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:16,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,555 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:16,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:16,574 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:16,575 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:16,575 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:16,575 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 03:58:16,575 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:16,575 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:16,576 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:16,576 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:16,617 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 11 proven. 11 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 03:58:16,617 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1006335811] [2020-10-27 03:58:16,617 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:16,618 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 03:58:16,618 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [259120650] [2020-10-27 03:58:16,620 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 03:58:16,620 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:16,621 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 03:58:16,621 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=24, Invalid=132, Unknown=0, NotChecked=0, Total=156 [2020-10-27 03:58:16,621 INFO L87 Difference]: Start difference. First operand 36 states and 43 transitions. Second operand 13 states. [2020-10-27 03:58:17,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:17,377 INFO L93 Difference]: Finished difference Result 49 states and 59 transitions. [2020-10-27 03:58:17,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 03:58:17,380 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 42 [2020-10-27 03:58:17,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:17,381 INFO L225 Difference]: With dead ends: 49 [2020-10-27 03:58:17,382 INFO L226 Difference]: Without dead ends: 44 [2020-10-27 03:58:17,382 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 35 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-10-27 03:58:17,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2020-10-27 03:58:17,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 39. [2020-10-27 03:58:17,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 03:58:17,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 03:58:17,391 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 42 [2020-10-27 03:58:17,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:17,391 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 03:58:17,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 03:58:17,391 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 03:58:17,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 03:58:17,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:17,393 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:17,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 03:58:17,393 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:17,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:17,394 INFO L82 PathProgramCache]: Analyzing trace with hash 926519380, now seen corresponding path program 4 times [2020-10-27 03:58:17,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:17,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1080530504] [2020-10-27 03:58:17,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:17,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:17,416 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,549 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:17,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,073 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:18,171 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 03:58:22,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 12 [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 03:58:22,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:22,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:22,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,466 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,466 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:22,466 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:22,466 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:22,467 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:22,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:22,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:22,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:22,480 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,592 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,592 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:22,592 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:22,593 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,632 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:22,636 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:22,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:22,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:22,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 03:58:22,716 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:22,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:22,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:22,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:22,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,785 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,785 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:22,785 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:22,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,842 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:22,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:22,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:22,859 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:22,859 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:22,859 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:22,859 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 03:58:22,860 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:22,860 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:22,860 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:22,921 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 13 proven. 11 refuted. 0 times theorem prover too weak. 11 trivial. 0 not checked. [2020-10-27 03:58:22,921 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1080530504] [2020-10-27 03:58:22,922 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:22,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 03:58:22,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369711911] [2020-10-27 03:58:22,923 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 03:58:22,923 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:22,924 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 03:58:22,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=154, Unknown=0, NotChecked=0, Total=182 [2020-10-27 03:58:22,925 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 14 states. [2020-10-27 03:58:23,714 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:23,715 INFO L93 Difference]: Finished difference Result 50 states and 60 transitions. [2020-10-27 03:58:23,719 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 03:58:23,720 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-27 03:58:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:23,722 INFO L225 Difference]: With dead ends: 50 [2020-10-27 03:58:23,722 INFO L226 Difference]: Without dead ends: 45 [2020-10-27 03:58:23,723 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=416, Unknown=0, NotChecked=0, Total=506 [2020-10-27 03:58:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2020-10-27 03:58:23,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 39. [2020-10-27 03:58:23,738 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-10-27 03:58:23,739 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-10-27 03:58:23,742 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 42 [2020-10-27 03:58:23,742 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:23,742 INFO L481 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-10-27 03:58:23,742 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 03:58:23,742 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-10-27 03:58:23,743 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 03:58:23,743 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:23,743 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:23,744 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 03:58:23,744 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:23,747 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:23,747 INFO L82 PathProgramCache]: Analyzing trace with hash 500795700, now seen corresponding path program 5 times [2020-10-27 03:58:23,748 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:23,748 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2115636042] [2020-10-27 03:58:23,748 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:23,765 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:23,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,916 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,946 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:23,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,003 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,059 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,422 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:24,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,768 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:28,769 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 03:58:28,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:28,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:28,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:28,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,861 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:28,861 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:28,862 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:28,865 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:28,871 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:28,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:28,980 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 109 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:28,981 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:28,982 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:29,022 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:29,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:29,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:29,093 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:29,093 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 67 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:29,094 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:29,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:29,132 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:29,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:29,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:29,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:29,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:29,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 38 [2020-10-27 03:58:29,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:29,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:29,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:29,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:29,254 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:29,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:29,260 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:29,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:29,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:29,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:29,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:29,339 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 9 proven. 18 refuted. 0 times theorem prover too weak. 8 trivial. 0 not checked. [2020-10-27 03:58:29,339 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2115636042] [2020-10-27 03:58:29,339 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:29,339 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15] total 15 [2020-10-27 03:58:29,340 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979583179] [2020-10-27 03:58:29,340 INFO L461 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-10-27 03:58:29,340 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:29,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-10-27 03:58:29,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-10-27 03:58:29,341 INFO L87 Difference]: Start difference. First operand 39 states and 47 transitions. Second operand 15 states. [2020-10-27 03:58:30,058 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:30,058 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-27 03:58:30,059 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 03:58:30,059 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 42 [2020-10-27 03:58:30,059 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:30,060 INFO L225 Difference]: With dead ends: 53 [2020-10-27 03:58:30,060 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 03:58:30,063 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=100, Invalid=452, Unknown=0, NotChecked=0, Total=552 [2020-10-27 03:58:30,063 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 03:58:30,080 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 42. [2020-10-27 03:58:30,080 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 03:58:30,081 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 51 transitions. [2020-10-27 03:58:30,081 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 51 transitions. Word has length 42 [2020-10-27 03:58:30,081 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:30,081 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 51 transitions. [2020-10-27 03:58:30,082 INFO L482 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-10-27 03:58:30,082 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 51 transitions. [2020-10-27 03:58:30,085 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 03:58:30,086 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:30,086 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:30,086 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 03:58:30,086 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:30,087 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:30,087 INFO L82 PathProgramCache]: Analyzing trace with hash 1438294772, now seen corresponding path program 6 times [2020-10-27 03:58:30,087 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:30,087 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1060056600] [2020-10-27 03:58:30,087 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:30,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:30,122 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,225 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,241 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,291 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,322 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,341 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:30,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:31,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,312 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 10 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4203 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 03:58:34,313 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,358 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:34,361 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:34,367 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:34,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,369 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,379 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,483 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 03:58:34,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:34,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:34,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:34,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:34,596 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:34,597 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,631 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:34,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,637 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,672 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,672 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:34,672 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:34,672 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 03:58:34,673 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:34,673 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:34,673 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:34,734 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:34,735 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:34,749 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:34,750 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:34,751 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:34,751 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:34,782 INFO L134 CoverageAnalysis]: Checked inductivity of 35 backedges. 8 proven. 17 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-27 03:58:34,783 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1060056600] [2020-10-27 03:58:34,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:34,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 03:58:34,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1487594829] [2020-10-27 03:58:34,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 03:58:34,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:34,786 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 03:58:34,791 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 03:58:34,791 INFO L87 Difference]: Start difference. First operand 42 states and 51 transitions. Second operand 14 states. [2020-10-27 03:58:35,751 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:35,752 INFO L93 Difference]: Finished difference Result 53 states and 64 transitions. [2020-10-27 03:58:35,753 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 03:58:35,753 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 42 [2020-10-27 03:58:35,753 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:35,754 INFO L225 Difference]: With dead ends: 53 [2020-10-27 03:58:35,754 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 03:58:35,756 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=89, Invalid=417, Unknown=0, NotChecked=0, Total=506 [2020-10-27 03:58:35,756 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 03:58:35,762 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 40. [2020-10-27 03:58:35,762 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-27 03:58:35,763 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 48 transitions. [2020-10-27 03:58:35,763 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 48 transitions. Word has length 42 [2020-10-27 03:58:35,763 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:35,763 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 48 transitions. [2020-10-27 03:58:35,764 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 03:58:35,764 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 48 transitions. [2020-10-27 03:58:35,764 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:58:35,764 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:35,765 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:35,765 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 03:58:35,765 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:35,766 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:35,766 INFO L82 PathProgramCache]: Analyzing trace with hash -1968923036, now seen corresponding path program 7 times [2020-10-27 03:58:35,766 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:35,766 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1744792714] [2020-10-27 03:58:35,766 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:35,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:35,787 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:35,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:35,868 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:35,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,025 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,044 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,461 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,563 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,724 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:36,863 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:37,101 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:38,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:38,625 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:38,705 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:38,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:58:40,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:40,832 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:40,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:40,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,838 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:40,838 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:40,838 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:40,838 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:40,839 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:40,839 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:40,839 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:40,840 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:40,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:40,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 151 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:40,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:58:40,999 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:41,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:41,042 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:41,046 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:41,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 127 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:41,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:41,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:41,236 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:41,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:41,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:41,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:41,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:41,352 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:41,355 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:41,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:41,392 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:41,392 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:41,392 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:41,392 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 03:58:41,392 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:41,393 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:41,393 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:41,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:41,470 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:41,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:41,483 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:41,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:41,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:41,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:41,537 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 13 proven. 31 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 03:58:41,538 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1744792714] [2020-10-27 03:58:41,538 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:41,538 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 03:58:41,538 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [382292774] [2020-10-27 03:58:41,540 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 03:58:41,540 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:41,543 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 03:58:41,543 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:58:41,543 INFO L87 Difference]: Start difference. First operand 40 states and 48 transitions. Second operand 17 states. [2020-10-27 03:58:42,619 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:42,620 INFO L93 Difference]: Finished difference Result 56 states and 68 transitions. [2020-10-27 03:58:42,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 03:58:42,620 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-27 03:58:42,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:42,621 INFO L225 Difference]: With dead ends: 56 [2020-10-27 03:58:42,622 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 03:58:42,623 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 74 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-27 03:58:42,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 03:58:42,633 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 51. [2020-10-27 03:58:42,634 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-27 03:58:42,638 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-27 03:58:42,638 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 50 [2020-10-27 03:58:42,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:42,638 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-27 03:58:42,638 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 03:58:42,638 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-27 03:58:42,640 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:58:42,640 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:42,640 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:42,641 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 03:58:42,641 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:42,641 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:42,641 INFO L82 PathProgramCache]: Analyzing trace with hash -545662012, now seen corresponding path program 8 times [2020-10-27 03:58:42,641 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:42,642 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1743524099] [2020-10-27 03:58:42,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:42,654 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:42,659 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,706 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,722 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,770 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:42,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:43,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:43,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:43,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:43,646 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:44,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:45,017 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:45,144 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:47,655 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:47,655 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:58:47,656 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:47,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:47,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:47,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:47,716 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:47,716 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:47,716 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:47,716 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 03:58:47,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:47,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:47,717 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:47,722 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:47,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:47,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:47,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:58:47,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:47,903 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:47,907 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:47,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:47,987 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:47,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:47,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:47,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 03:58:47,988 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:47,988 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:47,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:48,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:48,051 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:48,053 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:48,092 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:48,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:48,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:48,160 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:48,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:48,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:48,186 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:48,186 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:48,186 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:48,187 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:48,265 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:48,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:48,269 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:48,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:48,278 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:48,278 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:48,321 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 13 proven. 35 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 03:58:48,322 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1743524099] [2020-10-27 03:58:48,322 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:48,322 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 03:58:48,322 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1828890119] [2020-10-27 03:58:48,323 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 03:58:48,323 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:48,323 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 03:58:48,324 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=37, Invalid=269, Unknown=0, NotChecked=0, Total=306 [2020-10-27 03:58:48,324 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 18 states. [2020-10-27 03:58:49,434 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:49,434 INFO L93 Difference]: Finished difference Result 65 states and 80 transitions. [2020-10-27 03:58:49,434 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 03:58:49,435 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-10-27 03:58:49,435 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:49,436 INFO L225 Difference]: With dead ends: 65 [2020-10-27 03:58:49,436 INFO L226 Difference]: Without dead ends: 60 [2020-10-27 03:58:49,437 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=133, Invalid=737, Unknown=0, NotChecked=0, Total=870 [2020-10-27 03:58:49,437 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 60 states. [2020-10-27 03:58:49,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 60 to 58. [2020-10-27 03:58:49,444 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 03:58:49,445 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-27 03:58:49,445 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 50 [2020-10-27 03:58:49,445 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:49,445 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-27 03:58:49,446 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 03:58:49,446 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-27 03:58:49,446 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:58:49,447 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:49,447 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:49,447 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 03:58:49,447 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:49,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:49,448 INFO L82 PathProgramCache]: Analyzing trace with hash -1277969884, now seen corresponding path program 9 times [2020-10-27 03:58:49,448 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:49,448 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1343462218] [2020-10-27 03:58:49,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:49,457 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:49,463 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,515 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,573 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,654 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,751 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:49,996 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,348 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:50,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:51,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:51,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:51,701 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:51,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:52,066 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,461 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:58:54,461 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 19 [2020-10-27 03:58:54,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 03:58:54,466 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:58:54,466 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:58:54,467 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:58:54,467 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:54,536 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:58:54,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:54,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,542 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,542 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:58:54,542 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:54,542 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:58:54,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:54,543 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:58:54,543 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:54,545 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:58:54,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:54,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,650 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,650 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:58:54,650 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:54,650 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 03:58:54,650 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:58:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:54,651 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:58:54,651 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:54,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:54,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:54,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,778 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:58:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:54,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:58:54,779 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:54,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:54,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:54,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:58:54,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:54,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:54,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:54,954 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:54,983 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:58:54,984 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:54,985 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:58:54,985 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:55,065 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:58:55,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:55,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:55,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:58:55,079 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:58:55,079 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:58:55,080 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:58:55,124 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 11 proven. 34 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 03:58:55,125 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1343462218] [2020-10-27 03:58:55,125 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:58:55,125 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 03:58:55,125 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1690715487] [2020-10-27 03:58:55,125 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 03:58:55,126 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:58:55,126 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 03:58:55,126 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:58:55,126 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 17 states. [2020-10-27 03:58:56,175 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:58:56,177 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-27 03:58:56,177 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 03:58:56,177 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-27 03:58:56,178 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:58:56,179 INFO L225 Difference]: With dead ends: 69 [2020-10-27 03:58:56,179 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 03:58:56,183 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 70 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=119, Invalid=693, Unknown=0, NotChecked=0, Total=812 [2020-10-27 03:58:56,184 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 03:58:56,196 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 58. [2020-10-27 03:58:56,196 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-27 03:58:56,197 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-27 03:58:56,197 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 50 [2020-10-27 03:58:56,197 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:58:56,198 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-27 03:58:56,198 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 03:58:56,198 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-27 03:58:56,198 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:58:56,199 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:58:56,199 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:58:56,199 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 03:58:56,199 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:58:56,200 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:58:56,200 INFO L82 PathProgramCache]: Analyzing trace with hash -1236615164, now seen corresponding path program 10 times [2020-10-27 03:58:56,200 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:58:56,201 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [279194042] [2020-10-27 03:58:56,201 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:58:56,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:58:56,220 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,382 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,414 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:56,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:58,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:58,704 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:58,811 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:58:59,005 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,214 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,214 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:59:01,215 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,261 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:01,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,264 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,267 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:01,268 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:01,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 105 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:01,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,421 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:01,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,429 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,506 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,506 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:01,506 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,506 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 79 [2020-10-27 03:59:01,506 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,507 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:01,507 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,563 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:01,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,569 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,632 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,632 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:01,632 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,632 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 03:59:01,633 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,633 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:01,633 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,688 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:01,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,693 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:01,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 30 [2020-10-27 03:59:01,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,723 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:01,723 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,802 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:01,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:01,806 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:01,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:01,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:01,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:01,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:01,861 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 16 proven. 32 refuted. 0 times theorem prover too weak. 12 trivial. 0 not checked. [2020-10-27 03:59:01,862 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [279194042] [2020-10-27 03:59:01,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:01,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18] total 18 [2020-10-27 03:59:01,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1529816503] [2020-10-27 03:59:01,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 03:59:01,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:01,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 03:59:01,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 03:59:01,864 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 18 states. [2020-10-27 03:59:02,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:02,873 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-27 03:59:02,873 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 03:59:02,873 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 50 [2020-10-27 03:59:02,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:02,874 INFO L225 Difference]: With dead ends: 69 [2020-10-27 03:59:02,874 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 03:59:02,875 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 86 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=134, Invalid=736, Unknown=0, NotChecked=0, Total=870 [2020-10-27 03:59:02,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 03:59:02,882 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 56. [2020-10-27 03:59:02,882 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 03:59:02,883 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 69 transitions. [2020-10-27 03:59:02,883 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 69 transitions. Word has length 50 [2020-10-27 03:59:02,883 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:02,884 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 69 transitions. [2020-10-27 03:59:02,884 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 03:59:02,884 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 69 transitions. [2020-10-27 03:59:02,885 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:59:02,885 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:02,885 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:02,885 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 03:59:02,885 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:02,885 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:02,886 INFO L82 PathProgramCache]: Analyzing trace with hash 1492846532, now seen corresponding path program 11 times [2020-10-27 03:59:02,886 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:02,886 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2026431703] [2020-10-27 03:59:02,886 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:02,899 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:02,905 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:02,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:02,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,043 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,071 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,108 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,133 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,284 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:03,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:04,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:04,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:04,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5001 [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:07,902 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:07,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:59:07,903 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:07,960 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:07,962 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:07,963 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:07,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:07,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:07,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:07,967 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:07,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:07,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:08,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:08,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:08,082 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:08,082 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 107 [2020-10-27 03:59:08,082 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:59:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:08,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:08,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:08,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:08,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:08,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:08,212 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:08,229 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:08,235 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:08,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:08,279 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:08,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:08,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:08,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:08,342 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:08,370 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:08,370 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:08,370 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:08,371 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:08,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:08,445 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:08,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:08,454 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:08,454 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:08,520 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 15 proven. 30 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 03:59:08,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2026431703] [2020-10-27 03:59:08,521 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:08,521 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 03:59:08,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1381782656] [2020-10-27 03:59:08,521 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 03:59:08,521 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:08,522 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 03:59:08,522 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=237, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:59:08,522 INFO L87 Difference]: Start difference. First operand 56 states and 69 transitions. Second operand 17 states. [2020-10-27 03:59:09,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:09,467 INFO L93 Difference]: Finished difference Result 69 states and 85 transitions. [2020-10-27 03:59:09,468 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 03:59:09,468 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-27 03:59:09,468 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:09,469 INFO L225 Difference]: With dead ends: 69 [2020-10-27 03:59:09,469 INFO L226 Difference]: Without dead ends: 64 [2020-10-27 03:59:09,470 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 55 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=122, Invalid=634, Unknown=0, NotChecked=0, Total=756 [2020-10-27 03:59:09,471 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 64 states. [2020-10-27 03:59:09,477 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 64 to 59. [2020-10-27 03:59:09,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 03:59:09,478 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-27 03:59:09,478 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 50 [2020-10-27 03:59:09,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:09,478 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-27 03:59:09,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 03:59:09,478 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-27 03:59:09,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:59:09,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:09,479 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:09,480 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 03:59:09,480 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:09,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:09,480 INFO L82 PathProgramCache]: Analyzing trace with hash -2111167612, now seen corresponding path program 12 times [2020-10-27 03:59:09,481 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:09,481 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299303179] [2020-10-27 03:59:09,481 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:09,492 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:09,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,565 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,600 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,613 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,628 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:09,887 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:10,232 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:10,289 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:10,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:10,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:10,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:11,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:11,624 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:59:14,494 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 03:59:14,494 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:59:14,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:14,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:59:14,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:14,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,545 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:14,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:14,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:14,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,556 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,648 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,648 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:14,648 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:14,649 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:14,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:14,760 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,778 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:14,783 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,824 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:14,825 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,882 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,888 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:14,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:14,981 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:14,983 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:14,984 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:14,991 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:14,991 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:14,991 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:14,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:15,026 INFO L134 CoverageAnalysis]: Checked inductivity of 60 backedges. 7 proven. 36 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 03:59:15,026 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299303179] [2020-10-27 03:59:15,026 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:15,027 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 03:59:15,027 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2099783085] [2020-10-27 03:59:15,027 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 03:59:15,027 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:15,028 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 03:59:15,028 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:59:15,028 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 16 states. [2020-10-27 03:59:15,950 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:15,950 INFO L93 Difference]: Finished difference Result 70 states and 86 transitions. [2020-10-27 03:59:15,951 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 03:59:15,951 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-27 03:59:15,951 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:15,952 INFO L225 Difference]: With dead ends: 70 [2020-10-27 03:59:15,952 INFO L226 Difference]: Without dead ends: 65 [2020-10-27 03:59:15,953 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 58 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-10-27 03:59:15,953 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-27 03:59:15,959 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 59. [2020-10-27 03:59:15,959 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 59 states. [2020-10-27 03:59:15,960 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 73 transitions. [2020-10-27 03:59:15,960 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 73 transitions. Word has length 50 [2020-10-27 03:59:15,961 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:15,961 INFO L481 AbstractCegarLoop]: Abstraction has 59 states and 73 transitions. [2020-10-27 03:59:15,961 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 03:59:15,961 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 73 transitions. [2020-10-27 03:59:15,962 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:59:15,962 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:15,962 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:15,962 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 03:59:15,962 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:15,963 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:15,963 INFO L82 PathProgramCache]: Analyzing trace with hash -2069812892, now seen corresponding path program 13 times [2020-10-27 03:59:15,963 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:15,963 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1136488052] [2020-10-27 03:59:15,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:15,973 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:15,980 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,057 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,104 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,128 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,299 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,337 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,784 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:16,824 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:17,042 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:18,438 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:20,974 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:20,974 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:59:20,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 03:59:20,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:59:20,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:20,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:59:20,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,020 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:21,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,023 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,025 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,026 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:21,026 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:21,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 94 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:21,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,161 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:21,167 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 70 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:21,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,292 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:21,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:21,344 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 03:59:21,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:21,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,410 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:21,413 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,415 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,438 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,438 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:21,438 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 03:59:21,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:21,439 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,489 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:21,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:21,492 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:21,500 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:21,500 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:21,501 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:21,546 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 21 proven. 23 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2020-10-27 03:59:21,546 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1136488052] [2020-10-27 03:59:21,546 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:21,547 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [17] total 17 [2020-10-27 03:59:21,547 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1508772302] [2020-10-27 03:59:21,547 INFO L461 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-10-27 03:59:21,547 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:21,548 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-10-27 03:59:21,548 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=238, Unknown=0, NotChecked=0, Total=272 [2020-10-27 03:59:21,548 INFO L87 Difference]: Start difference. First operand 59 states and 73 transitions. Second operand 17 states. [2020-10-27 03:59:22,570 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:22,571 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2020-10-27 03:59:22,571 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 03:59:22,571 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 50 [2020-10-27 03:59:22,572 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:22,573 INFO L225 Difference]: With dead ends: 73 [2020-10-27 03:59:22,573 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 03:59:22,574 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=120, Invalid=692, Unknown=0, NotChecked=0, Total=812 [2020-10-27 03:59:22,575 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 03:59:22,585 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-10-27 03:59:22,585 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 03:59:22,586 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-10-27 03:59:22,586 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 50 [2020-10-27 03:59:22,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:22,586 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-10-27 03:59:22,586 INFO L482 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-10-27 03:59:22,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-10-27 03:59:22,589 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-27 03:59:22,589 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:22,590 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 4, 3, 3, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:22,590 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 03:59:22,590 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:22,590 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:22,590 INFO L82 PathProgramCache]: Analyzing trace with hash -1378859740, now seen corresponding path program 14 times [2020-10-27 03:59:22,591 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:22,591 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1497997770] [2020-10-27 03:59:22,591 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:22,604 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:22,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,647 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,662 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,712 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:22,973 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:23,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:23,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:23,640 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:24,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:27,606 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:27,606 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 03:59:27,606 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 13 [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 03:59:27,607 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:27,652 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:27,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:27,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:27,658 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:27,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:27,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:27,668 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 91 [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 03:59:27,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:27,758 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:27,758 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:27,796 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:27,800 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:27,802 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:27,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:27,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:27,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:27,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 03:59:27,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:27,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:27,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:27,884 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:27,898 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:27,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:27,935 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:27,935 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:27,935 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:27,935 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 36 [2020-10-27 03:59:27,936 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:27,936 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:27,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:27,993 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:27,995 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:27,997 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:28,019 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:28,020 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:28,020 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:28,095 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:28,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:28,099 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:28,106 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:28,107 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:28,107 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 62 backedges. 17 proven. 28 refuted. 0 times theorem prover too weak. 17 trivial. 0 not checked. [2020-10-27 03:59:28,145 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1497997770] [2020-10-27 03:59:28,145 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:28,146 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [16] total 16 [2020-10-27 03:59:28,146 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [242423607] [2020-10-27 03:59:28,146 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 03:59:28,146 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:28,147 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 03:59:28,147 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=209, Unknown=0, NotChecked=0, Total=240 [2020-10-27 03:59:28,147 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 16 states. [2020-10-27 03:59:29,074 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:29,074 INFO L93 Difference]: Finished difference Result 73 states and 90 transitions. [2020-10-27 03:59:29,075 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 03:59:29,076 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 50 [2020-10-27 03:59:29,076 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:29,077 INFO L225 Difference]: With dead ends: 73 [2020-10-27 03:59:29,078 INFO L226 Difference]: Without dead ends: 68 [2020-10-27 03:59:29,079 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 25 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 52 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=109, Invalid=593, Unknown=0, NotChecked=0, Total=702 [2020-10-27 03:59:29,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 68 states. [2020-10-27 03:59:29,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 68 to 62. [2020-10-27 03:59:29,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 03:59:29,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 77 transitions. [2020-10-27 03:59:29,086 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 77 transitions. Word has length 50 [2020-10-27 03:59:29,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:29,086 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 77 transitions. [2020-10-27 03:59:29,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 03:59:29,087 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 77 transitions. [2020-10-27 03:59:29,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 03:59:29,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:29,088 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:29,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 03:59:29,088 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:29,088 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:29,089 INFO L82 PathProgramCache]: Analyzing trace with hash 366443668, now seen corresponding path program 15 times [2020-10-27 03:59:29,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:29,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1324869185] [2020-10-27 03:59:29,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:29,099 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:29,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,234 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,334 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,360 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,375 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,477 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:29,594 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,024 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,612 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:31,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:31,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:31,456 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:31,534 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:32,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:32,069 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:32,080 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:32,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,100 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 03:59:34,101 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,145 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:34,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,148 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:34,150 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:34,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:34,151 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,153 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:34,159 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,164 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 135 [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 03:59:34,295 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,296 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 03:59:34,296 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,333 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:34,340 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,344 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,437 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,437 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:34,437 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 96 [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:34,438 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,456 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:34,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,530 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:34,531 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,532 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:34,532 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,590 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:34,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,595 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:34,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:34,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,711 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 21 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:34,732 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:34,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:34,843 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:34,873 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:34,873 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:34,873 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 31 [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:34,874 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:34,923 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 19 proven. 56 refuted. 0 times theorem prover too weak. 22 trivial. 0 not checked. [2020-10-27 03:59:34,924 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1324869185] [2020-10-27 03:59:34,924 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:34,924 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 03:59:34,924 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1338410365] [2020-10-27 03:59:34,924 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 03:59:34,925 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:34,925 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 03:59:34,925 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=39, Invalid=303, Unknown=0, NotChecked=0, Total=342 [2020-10-27 03:59:34,925 INFO L87 Difference]: Start difference. First operand 62 states and 77 transitions. Second operand 19 states. [2020-10-27 03:59:36,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:36,116 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-10-27 03:59:36,117 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 03:59:36,118 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-27 03:59:36,118 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:36,119 INFO L225 Difference]: With dead ends: 78 [2020-10-27 03:59:36,119 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 03:59:36,120 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 80 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=144, Invalid=848, Unknown=0, NotChecked=0, Total=992 [2020-10-27 03:59:36,121 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 03:59:36,131 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 67. [2020-10-27 03:59:36,131 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-10-27 03:59:36,133 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 84 transitions. [2020-10-27 03:59:36,133 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 84 transitions. Word has length 58 [2020-10-27 03:59:36,134 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:36,134 INFO L481 AbstractCegarLoop]: Abstraction has 67 states and 84 transitions. [2020-10-27 03:59:36,134 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 03:59:36,134 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 84 transitions. [2020-10-27 03:59:36,140 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 03:59:36,140 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:36,140 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 4, 4, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:36,140 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 03:59:36,140 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:36,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:36,141 INFO L82 PathProgramCache]: Analyzing trace with hash -1959617964, now seen corresponding path program 16 times [2020-10-27 03:59:36,141 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:36,143 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [497082189] [2020-10-27 03:59:36,143 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:36,154 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:36,161 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,191 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,301 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,554 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,785 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:36,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,123 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,185 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,308 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,369 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,702 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:37,848 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:38,445 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:38,491 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:38,574 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:39,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:39,150 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:39,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:39,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 28 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:41,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 03:59:41,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:41,200 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:41,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:41,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,206 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,206 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:41,206 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:41,206 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:41,207 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:41,207 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:41,207 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:41,208 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:41,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:41,217 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,348 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 134 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 03:59:41,349 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:41,393 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:41,401 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:41,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,619 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,619 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:41,619 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:41,620 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 216 [2020-10-27 03:59:41,620 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:41,620 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:41,621 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:41,621 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:41,662 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:41,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:41,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,800 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,801 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:41,801 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:41,801 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-27 03:59:41,801 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,801 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:41,802 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:41,802 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:41,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:41,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:41,867 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:41,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:41,930 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:41,931 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:42,000 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:42,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:42,006 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:42,041 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:42,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:42,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:42,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 37 [2020-10-27 03:59:42,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:42,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:42,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:42,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:42,115 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:42,117 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:42,118 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:42,130 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:42,131 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:42,132 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:42,132 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:42,228 INFO L134 CoverageAnalysis]: Checked inductivity of 97 backedges. 18 proven. 59 refuted. 0 times theorem prover too weak. 20 trivial. 0 not checked. [2020-10-27 03:59:42,231 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [497082189] [2020-10-27 03:59:42,232 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:42,232 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 03:59:42,232 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739065876] [2020-10-27 03:59:42,233 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 03:59:42,233 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:42,233 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 03:59:42,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 03:59:42,234 INFO L87 Difference]: Start difference. First operand 67 states and 84 transitions. Second operand 20 states. [2020-10-27 03:59:43,467 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:43,468 INFO L93 Difference]: Finished difference Result 78 states and 97 transitions. [2020-10-27 03:59:43,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 03:59:43,470 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 58 [2020-10-27 03:59:43,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:43,471 INFO L225 Difference]: With dead ends: 78 [2020-10-27 03:59:43,471 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 03:59:43,471 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 1 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 94 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=159, Invalid=897, Unknown=0, NotChecked=0, Total=1056 [2020-10-27 03:59:43,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 03:59:43,476 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 68. [2020-10-27 03:59:43,477 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-27 03:59:43,477 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-10-27 03:59:43,478 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 58 [2020-10-27 03:59:43,478 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:43,478 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-10-27 03:59:43,478 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 03:59:43,478 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-10-27 03:59:43,479 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 03:59:43,479 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:43,479 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:43,479 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable22 [2020-10-27 03:59:43,480 INFO L429 AbstractCegarLoop]: === Iteration 24 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:43,480 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:43,480 INFO L82 PathProgramCache]: Analyzing trace with hash 1264698708, now seen corresponding path program 17 times [2020-10-27 03:59:43,480 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:43,480 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [480457851] [2020-10-27 03:59:43,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:43,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:43,500 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,527 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,633 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,755 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,817 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,831 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,856 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:43,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:44,305 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:44,331 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:44,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:44,605 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:44,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:45,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:46,572 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:46,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:46,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:46,960 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:48,494 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:48,494 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 20 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5002 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 03:59:48,495 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:48,541 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:48,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:48,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:48,547 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:48,548 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:48,548 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:48,549 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:48,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:48,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:48,686 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:48,686 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 25 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 03:59:48,687 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:48,729 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:48,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:48,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:48,921 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:48,921 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 03:59:48,922 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:48,922 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 03:59:48,922 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 03:59:48,922 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:48,923 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 03:59:48,923 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:48,971 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:48,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:49,092 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:49,092 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 03:59:49,092 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:49,092 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 03:59:49,093 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 18 [2020-10-27 03:59:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:49,093 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 38 [2020-10-27 03:59:49,093 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:49,154 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:49,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:49,160 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:49,229 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:49,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 03:59:49,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:49,230 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 03:59:49,230 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:49,230 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 03:59:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:49,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 28 [2020-10-27 03:59:49,231 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:49,298 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:49,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:49,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:49,365 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:49,366 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 03:59:49,367 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:49,422 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 03:59:49,423 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:49,425 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:49,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:49,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 03:59:49,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:49,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 03:59:49,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 03:59:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:49,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 03:59:49,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:49,483 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 29 proven. 40 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-27 03:59:49,483 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [480457851] [2020-10-27 03:59:49,484 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 03:59:49,484 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 03:59:49,484 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [960088771] [2020-10-27 03:59:49,484 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 03:59:49,484 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 03:59:49,485 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 03:59:49,485 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=40, Invalid=302, Unknown=0, NotChecked=0, Total=342 [2020-10-27 03:59:49,485 INFO L87 Difference]: Start difference. First operand 68 states and 85 transitions. Second operand 19 states. [2020-10-27 03:59:50,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 03:59:50,633 INFO L93 Difference]: Finished difference Result 82 states and 102 transitions. [2020-10-27 03:59:50,634 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-27 03:59:50,634 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 58 [2020-10-27 03:59:50,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 03:59:50,635 INFO L225 Difference]: With dead ends: 82 [2020-10-27 03:59:50,636 INFO L226 Difference]: Without dead ends: 77 [2020-10-27 03:59:50,636 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 11 SyntacticMatches, 1 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 101 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=145, Invalid=847, Unknown=0, NotChecked=0, Total=992 [2020-10-27 03:59:50,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-27 03:59:50,641 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 71. [2020-10-27 03:59:50,641 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 71 states. [2020-10-27 03:59:50,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 71 states to 71 states and 89 transitions. [2020-10-27 03:59:50,642 INFO L78 Accepts]: Start accepts. Automaton has 71 states and 89 transitions. Word has length 58 [2020-10-27 03:59:50,643 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 03:59:50,643 INFO L481 AbstractCegarLoop]: Abstraction has 71 states and 89 transitions. [2020-10-27 03:59:50,643 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 03:59:50,643 INFO L276 IsEmpty]: Start isEmpty. Operand 71 states and 89 transitions. [2020-10-27 03:59:50,644 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-10-27 03:59:50,644 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 03:59:50,644 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 5, 3, 3, 3, 3, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 03:59:50,644 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable23 [2020-10-27 03:59:50,644 INFO L429 AbstractCegarLoop]: === Iteration 25 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 03:59:50,645 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 03:59:50,645 INFO L82 PathProgramCache]: Analyzing trace with hash -1156226828, now seen corresponding path program 18 times [2020-10-27 03:59:50,645 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 03:59:50,645 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [173956581] [2020-10-27 03:59:50,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 03:59:50,655 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:50,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,804 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,904 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,929 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,944 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:50,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,009 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,097 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,156 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,283 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,746 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,838 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:51,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:52,805 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,585 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:53,915 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,656 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:55,656 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 78 [2020-10-27 03:59:55,656 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4999 [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 26 [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 15 [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 03:59:55,657 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:55,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 03:59:55,709 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:55,710 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,712 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 03:59:55,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 03:59:55,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 03:59:55,713 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 03:59:55,715 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 03:59:55,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 03:59:55,725 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,775 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,790 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,800 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,833 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,853 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,860 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,878 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:55,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,068 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,121 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,252 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,272 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,470 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,499 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,526 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:56,617 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 03:59:58,782 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 24 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 56 [2020-10-27 04:00:00,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:00,743 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 04:00:00,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:00:00,752 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,774 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,783 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,797 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,819 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,835 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,912 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,923 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:00,937 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:01,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:01,107 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:01,147 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:01,159 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:01,166 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,096 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:04,096 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 50 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 18 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3347 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 04:00:04,097 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:04,112 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 04:00:04,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:00:04,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,170 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,204 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,231 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,237 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,329 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,481 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:04,525 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,137 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:05,137 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 40 [2020-10-27 04:00:05,137 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 16 [2020-10-27 04:00:05,137 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1020 [2020-10-27 04:00:05,138 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 04:00:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:05,138 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 36 [2020-10-27 04:00:05,138 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:05,167 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 04:00:05,170 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:00:05,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,181 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,212 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,233 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,274 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 9 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 26 [2020-10-27 04:00:05,298 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:05,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 04:00:05,302 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:00:05,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,311 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,337 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:05,337 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 04:00:05,337 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 04:00:05,337 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 04:00:05,338 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 04:00:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:05,338 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 16 [2020-10-27 04:00:05,338 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:05,354 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2020-10-27 04:00:05,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 04:00:05,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,359 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 04:00:05,363 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 04:00:05,363 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 04:00:05,363 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 04:00:05,364 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 04:00:05,372 INFO L134 CoverageAnalysis]: Checked inductivity of 93 backedges. 14 proven. 5 refuted. 0 times theorem prover too weak. 74 trivial. 0 not checked. [2020-10-27 04:00:05,372 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [173956581] [2020-10-27 04:00:05,372 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 04:00:05,372 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 04:00:05,373 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1622893568] [2020-10-27 04:00:05,373 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 04:00:05,373 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 04:00:05,373 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 04:00:05,374 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 04:00:05,374 INFO L87 Difference]: Start difference. First operand 71 states and 89 transitions. Second operand 11 states. [2020-10-27 04:00:06,014 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 04:00:06,014 INFO L93 Difference]: Finished difference Result 79 states and 102 transitions. [2020-10-27 04:00:06,014 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 04:00:06,014 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 58 [2020-10-27 04:00:06,015 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 04:00:06,015 INFO L225 Difference]: With dead ends: 79 [2020-10-27 04:00:06,015 INFO L226 Difference]: Without dead ends: 0 [2020-10-27 04:00:06,016 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 24 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=90, Invalid=330, Unknown=0, NotChecked=0, Total=420 [2020-10-27 04:00:06,016 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2020-10-27 04:00:06,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2020-10-27 04:00:06,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2020-10-27 04:00:06,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2020-10-27 04:00:06,017 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 58 [2020-10-27 04:00:06,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 04:00:06,017 INFO L481 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2020-10-27 04:00:06,017 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 04:00:06,017 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2020-10-27 04:00:06,017 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-10-27 04:00:06,017 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable24 [2020-10-27 04:00:06,019 INFO L343 DoubleDeckerVisitor]: Before removal of dead ends 0 states and 0 transitions. [2020-10-27 04:00:06,308 INFO L274 CegarLoopResult]: For program point reach_errorEXIT(line 3) no Hoare annotation was computed. [2020-10-27 04:00:06,308 INFO L277 CegarLoopResult]: At program point reach_errorENTRY(line 3) the Hoare annotation is: true [2020-10-27 04:00:06,308 INFO L274 CegarLoopResult]: For program point reach_errorFINAL(line 3) no Hoare annotation was computed. [2020-10-27 04:00:06,308 INFO L274 CegarLoopResult]: For program point reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION(line 3) no Hoare annotation was computed. [2020-10-27 04:00:06,308 INFO L274 CegarLoopResult]: For program point ULTIMATE.initFINAL(line -1) no Hoare annotation was computed. [2020-10-27 04:00:06,310 INFO L270 CegarLoopResult]: At program point ULTIMATE.initENTRY(line -1) the Hoare annotation is: (and (= |#t~string5.base| |old(#t~string5.base)|) (= |#t~string5.offset| |old(#t~string5.offset)|) (= |old(#length)| |#length|) (= |#t~string6.base| |old(#t~string6.base)|) (= |#t~string6.offset| |old(#t~string6.offset)|) (= |#t~string4.base| |old(#t~string4.base)|) (= |#NULL.base| |old(#NULL.base)|) (= |#t~string4.offset| |old(#t~string4.offset)|) (= |#NULL.offset| |old(#NULL.offset)|) (= |old(#valid)| |#valid|)) [2020-10-27 04:00:06,310 INFO L274 CegarLoopResult]: For program point ULTIMATE.initEXIT(line -1) no Hoare annotation was computed. [2020-10-27 04:00:06,310 INFO L274 CegarLoopResult]: For program point gcdFINAL(lines 17 28) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L270 CegarLoopResult]: At program point L27(line 27) the Hoare annotation is: (and (= gcd_~y2 |gcd_#in~y2|) (<= (+ gcd_~y1 1) gcd_~y2) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point gcdEXIT(lines 17 28) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point L27-1(line 27) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L270 CegarLoopResult]: At program point L25(line 25) the Hoare annotation is: (and (<= (+ gcd_~y2 1) gcd_~y1) (= gcd_~y2 |gcd_#in~y2|) (= gcd_~y1 |gcd_#in~y1|) (<= 1 gcd_~y1)) [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point L24(lines 24 26) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point L25-1(line 25) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L277 CegarLoopResult]: At program point gcdENTRY(lines 17 28) the Hoare annotation is: true [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point L21(lines 21 23) no Hoare annotation was computed. [2020-10-27 04:00:06,311 INFO L274 CegarLoopResult]: For program point L18(lines 18 20) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startEXIT(line -1) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L277 CegarLoopResult]: At program point L-1(line -1) the Hoare annotation is: true [2020-10-27 04:00:06,312 INFO L277 CegarLoopResult]: At program point ULTIMATE.startENTRY(line -1) the Hoare annotation is: true [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point ULTIMATE.startFINAL(line -1) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point L32(lines 32 34) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L277 CegarLoopResult]: At program point mainENTRY(lines 30 45) the Hoare annotation is: true [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point mainEXIT(lines 30 45) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L270 CegarLoopResult]: At program point L41(line 41) the Hoare annotation is: false [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point L40(lines 40 44) no Hoare annotation was computed. [2020-10-27 04:00:06,312 INFO L274 CegarLoopResult]: For program point L41-1(line 41) no Hoare annotation was computed. [2020-10-27 04:00:06,313 INFO L270 CegarLoopResult]: At program point L39(line 39) the Hoare annotation is: (and (<= 1 main_~n~0) (<= 1 main_~m~0)) [2020-10-27 04:00:06,313 INFO L274 CegarLoopResult]: For program point L40-1(lines 30 45) no Hoare annotation was computed. [2020-10-27 04:00:06,313 INFO L274 CegarLoopResult]: For program point L39-1(line 39) no Hoare annotation was computed. [2020-10-27 04:00:06,313 INFO L274 CegarLoopResult]: For program point L36(lines 36 38) no Hoare annotation was computed. [2020-10-27 04:00:06,320 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 04:00:06 BoogieIcfgContainer [2020-10-27 04:00:06,320 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 04:00:06,322 INFO L168 Benchmark]: Toolchain (without parser) took 133573.62 ms. Allocated memory was 125.8 MB in the beginning and 704.6 MB in the end (delta: 578.8 MB). Free memory was 101.1 MB in the beginning and 464.5 MB in the end (delta: -363.4 MB). Peak memory consumption was 216.3 MB. Max. memory is 8.0 GB. [2020-10-27 04:00:06,322 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 04:00:06,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 388.60 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 91.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. [2020-10-27 04:00:06,324 INFO L168 Benchmark]: Boogie Preprocessor took 64.20 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:00:06,330 INFO L168 Benchmark]: RCFGBuilder took 479.65 ms. Allocated memory is still 125.8 MB. Free memory was 89.7 MB in the beginning and 75.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. [2020-10-27 04:00:06,331 INFO L168 Benchmark]: TraceAbstraction took 132623.15 ms. Allocated memory was 125.8 MB in the beginning and 704.6 MB in the end (delta: 578.8 MB). Free memory was 75.1 MB in the beginning and 464.5 MB in the end (delta: -389.4 MB). Peak memory consumption was 190.1 MB. Max. memory is 8.0 GB. [2020-10-27 04:00:06,333 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 125.8 MB. Free memory is still 85.6 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 388.60 ms. Allocated memory is still 125.8 MB. Free memory was 100.4 MB in the beginning and 91.3 MB in the end (delta: 9.1 MB). Peak memory consumption was 8.4 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.20 ms. Allocated memory is still 125.8 MB. Free memory was 91.3 MB in the beginning and 89.9 MB in the end (delta: 1.3 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 479.65 ms. Allocated memory is still 125.8 MB. Free memory was 89.7 MB in the beginning and 75.6 MB in the end (delta: 14.2 MB). Peak memory consumption was 14.7 MB. Max. memory is 8.0 GB. * TraceAbstraction took 132623.15 ms. Allocated memory was 125.8 MB in the beginning and 704.6 MB in the end (delta: 578.8 MB). Free memory was 75.1 MB in the beginning and 464.5 MB in the end (delta: -389.4 MB). Peak memory consumption was 190.1 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 3]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 31 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: SAFE, OverallTime: 132.2s, OverallIterations: 25, TraceHistogramMax: 6, AutomataDifference: 21.0s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.2s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 480 SDtfs, 809 SDslu, 1323 SDs, 0 SdLazy, 7367 SolverSat, 568 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 7.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 753 GetRequests, 226 SyntacticMatches, 3 SemanticMatches, 524 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1124 ImplicationChecksByTransitivity, 16.4s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=71occurred in iteration=24, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 25 MinimizatonAttempts, 110 StatesRemovedByMinimization, 22 NontrivialMinimizations, HoareAnnotationStatistics: 0.0s HoareAnnotationTime, 10 LocationsWithAnnotation, 40 PreInvPairs, 40 NumberOfFragments, 74 HoareAnnotationTreeSize, 40 FomulaSimplifications, 0 FormulaSimplificationTreeSizeReduction, 0.1s HoareSimplificationTime, 10 FomulaSimplificationsInter, 191 FormulaSimplificationTreeSizeReductionInter, 0.1s HoareSimplificationTimeInter, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 109.9s InterpolantComputationTime, 1038 NumberOfCodeBlocks, 1038 NumberOfCodeBlocksAsserted, 25 NumberOfCheckSat, 1013 ConstructedInterpolants, 0 QuantifiedInterpolants, 223015 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 25 InterpolantComputations, 3 PerfectInterpolantSequences, 588/1072 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 correct! Received shutdown request...