/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=SHALLOWEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-26 23:46:08,652 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-26 23:46:08,656 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-26 23:46:08,697 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-26 23:46:08,698 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-26 23:46:08,699 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-26 23:46:08,702 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-26 23:46:08,705 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-26 23:46:08,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-26 23:46:08,709 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-26 23:46:08,711 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-26 23:46:08,713 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-26 23:46:08,713 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-26 23:46:08,715 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-26 23:46:08,717 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-26 23:46:08,719 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-26 23:46:08,721 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-26 23:46:08,722 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-26 23:46:08,743 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-26 23:46:08,746 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-26 23:46:08,752 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-26 23:46:08,755 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-26 23:46:08,757 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-26 23:46:08,761 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-26 23:46:08,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-26 23:46:08,772 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-26 23:46:08,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-26 23:46:08,776 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-26 23:46:08,777 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-26 23:46:08,780 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-26 23:46:08,780 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-26 23:46:08,782 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-26 23:46:08,785 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-26 23:46:08,786 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-26 23:46:08,788 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-26 23:46:08,788 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-26 23:46:08,789 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-26 23:46:08,789 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-26 23:46:08,790 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-26 23:46:08,791 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-26 23:46:08,792 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-26 23:46:08,793 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 [2020-10-26 23:46:08,865 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-26 23:46:08,866 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-26 23:46:08,872 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-26 23:46:08,873 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-26 23:46:08,873 INFO L138 SettingsManager]: * Use SBE=true [2020-10-26 23:46:08,873 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-26 23:46:08,874 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-26 23:46:08,874 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-26 23:46:08,875 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-26 23:46:08,875 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-26 23:46:08,876 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-26 23:46:08,877 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-26 23:46:08,877 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-26 23:46:08,877 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-26 23:46:08,877 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-26 23:46:08,878 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-26 23:46:08,878 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-26 23:46:08,878 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-26 23:46:08,879 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-26 23:46:08,879 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-26 23:46:08,879 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-26 23:46:08,879 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-26 23:46:08,880 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-26 23:46:08,880 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-26 23:46:08,880 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-26 23:46:08,880 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-26 23:46:08,881 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-26 23:46:08,881 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-26 23:46:08,881 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-26 23:46:08,881 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SHALLOWEST;log-additional-information=true;unknown-allowed=true; [2020-10-26 23:46:09,440 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-26 23:46:09,477 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-26 23:46:09,481 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-26 23:46:09,483 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-26 23:46:09,485 INFO L275 PluginConnector]: CDTParser initialized [2020-10-26 23:46:09,486 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-26 23:46:09,591 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d02193c6/df68cd8436ea48a9a03e15252fdfea67/FLAGd9b4e21a5 [2020-10-26 23:46:10,663 INFO L306 CDTParser]: Found 1 translation units. [2020-10-26 23:46:10,664 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem15_label46.c [2020-10-26 23:46:10,695 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d02193c6/df68cd8436ea48a9a03e15252fdfea67/FLAGd9b4e21a5 [2020-10-26 23:46:11,187 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/8d02193c6/df68cd8436ea48a9a03e15252fdfea67 [2020-10-26 23:46:11,193 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-26 23:46:11,201 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-26 23:46:11,203 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-26 23:46:11,203 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-26 23:46:11,208 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-26 23:46:11,209 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:46:11" (1/1) ... [2020-10-26 23:46:11,214 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4fec80b7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:11, skipping insertion in model container [2020-10-26 23:46:11,215 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 26.10 11:46:11" (1/1) ... [2020-10-26 23:46:11,225 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-26 23:46:11,303 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-26 23:46:12,179 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:46:12,196 INFO L203 MainTranslator]: Completed pre-run [2020-10-26 23:46:12,503 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-26 23:46:12,528 INFO L208 MainTranslator]: Completed translation [2020-10-26 23:46:12,530 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12 WrapperNode [2020-10-26 23:46:12,530 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-26 23:46:12,532 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-26 23:46:12,532 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-26 23:46:12,532 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-26 23:46:12,547 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,549 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,613 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,613 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,697 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,739 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,768 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (1/1) ... [2020-10-26 23:46:12,794 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-26 23:46:12,795 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-26 23:46:12,796 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-26 23:46:12,796 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-26 23:46:12,797 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (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 [2020-10-26 23:46:12,889 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-26 23:46:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-26 23:46:12,890 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-26 23:46:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-26 23:46:12,891 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output2 [2020-10-26 23:46:12,892 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-26 23:46:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-26 23:46:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output2 [2020-10-26 23:46:12,892 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-26 23:46:12,893 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-26 23:46:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-26 23:46:12,894 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-26 23:46:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-26 23:46:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-26 23:46:12,895 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-26 23:46:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-26 23:46:12,896 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-26 23:46:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-26 23:46:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-26 23:46:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-26 23:46:12,897 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-26 23:46:16,124 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-26 23:46:16,125 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-26 23:46:16,128 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:46:16 BoogieIcfgContainer [2020-10-26 23:46:16,129 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-26 23:46:16,133 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-26 23:46:16,133 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-26 23:46:16,138 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-26 23:46:16,138 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 26.10 11:46:11" (1/3) ... [2020-10-26 23:46:16,139 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5f4760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:46:16, skipping insertion in model container [2020-10-26 23:46:16,139 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 26.10 11:46:12" (2/3) ... [2020-10-26 23:46:16,140 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f5f4760 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 26.10 11:46:16, skipping insertion in model container [2020-10-26 23:46:16,140 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 26.10 11:46:16" (3/3) ... [2020-10-26 23:46:16,142 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem15_label46.c [2020-10-26 23:46:16,160 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-26 23:46:16,167 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-26 23:46:16,181 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-26 23:46:16,226 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-26 23:46:16,227 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-26 23:46:16,227 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-26 23:46:16,227 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-26 23:46:16,227 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-26 23:46:16,227 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-26 23:46:16,227 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-26 23:46:16,227 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-26 23:46:16,264 INFO L276 IsEmpty]: Start isEmpty. Operand 441 states. [2020-10-26 23:46:16,273 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-26 23:46:16,274 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:16,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:16,275 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:16,282 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:16,283 INFO L82 PathProgramCache]: Analyzing trace with hash 440131193, now seen corresponding path program 1 times [2020-10-26 23:46:16,293 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:16,293 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [973918364] [2020-10-26 23:46:16,294 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:16,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:16,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:17,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 60 [2020-10-26 23:46:17,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:17,152 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 665 [2020-10-26 23:46:17,154 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:17,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 51 [2020-10-26 23:46:17,155 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-26 23:46:17,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:17,347 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:17,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:17,373 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:17,373 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:17,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:17,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-26 23:46:17,374 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:17,374 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:17,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:17,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:17,396 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:17,397 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [973918364] [2020-10-26 23:46:17,400 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:17,400 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-26 23:46:17,401 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [350212281] [2020-10-26 23:46:17,407 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-26 23:46:17,407 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:17,422 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-26 23:46:17,423 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-26 23:46:17,426 INFO L87 Difference]: Start difference. First operand 441 states. Second operand 4 states. [2020-10-26 23:46:23,818 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:23,819 INFO L93 Difference]: Finished difference Result 1203 states and 2168 transitions. [2020-10-26 23:46:23,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-26 23:46:23,821 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 50 [2020-10-26 23:46:23,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:23,843 INFO L225 Difference]: With dead ends: 1203 [2020-10-26 23:46:23,844 INFO L226 Difference]: Without dead ends: 697 [2020-10-26 23:46:23,856 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-26 23:46:23,876 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 697 states. [2020-10-26 23:46:23,974 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 697 to 689. [2020-10-26 23:46:23,982 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 689 states. [2020-10-26 23:46:23,988 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 689 states to 689 states and 1009 transitions. [2020-10-26 23:46:23,992 INFO L78 Accepts]: Start accepts. Automaton has 689 states and 1009 transitions. Word has length 50 [2020-10-26 23:46:23,993 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:23,993 INFO L481 AbstractCegarLoop]: Abstraction has 689 states and 1009 transitions. [2020-10-26 23:46:23,993 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-26 23:46:23,993 INFO L276 IsEmpty]: Start isEmpty. Operand 689 states and 1009 transitions. [2020-10-26 23:46:24,000 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 120 [2020-10-26 23:46:24,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:24,001 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:24,001 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-26 23:46:24,002 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:24,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:24,002 INFO L82 PathProgramCache]: Analyzing trace with hash -568552754, now seen corresponding path program 1 times [2020-10-26 23:46:24,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:24,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [742419244] [2020-10-26 23:46:24,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:24,054 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:24,089 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:24,200 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:26,270 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:26,270 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 131 [2020-10-26 23:46:26,270 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:26,271 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2213 [2020-10-26 23:46:26,272 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:26,272 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:46:26,273 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:46:26,394 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:26,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:26,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:26,420 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:26,421 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:26,421 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:26,421 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:46:26,422 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:26,422 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:26,422 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:26,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:26,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:26,484 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:26,659 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:26,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:46:26,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:26,665 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 190 [2020-10-26 23:46:26,665 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:26,666 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:46:26,666 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:26,810 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:26,811 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [742419244] [2020-10-26 23:46:26,811 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:26,811 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:46:26,812 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1679473601] [2020-10-26 23:46:26,815 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:26,815 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:26,819 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:26,821 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:26,821 INFO L87 Difference]: Start difference. First operand 689 states and 1009 transitions. Second operand 7 states. [2020-10-26 23:46:36,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:36,810 INFO L93 Difference]: Finished difference Result 1706 states and 2409 transitions. [2020-10-26 23:46:36,813 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:46:36,814 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 119 [2020-10-26 23:46:36,814 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:36,820 INFO L225 Difference]: With dead ends: 1706 [2020-10-26 23:46:36,820 INFO L226 Difference]: Without dead ends: 1023 [2020-10-26 23:46:36,823 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:46:36,825 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1023 states. [2020-10-26 23:46:36,928 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1023 to 1010. [2020-10-26 23:46:36,929 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1010 states. [2020-10-26 23:46:36,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1010 states to 1010 states and 1361 transitions. [2020-10-26 23:46:36,937 INFO L78 Accepts]: Start accepts. Automaton has 1010 states and 1361 transitions. Word has length 119 [2020-10-26 23:46:36,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:36,937 INFO L481 AbstractCegarLoop]: Abstraction has 1010 states and 1361 transitions. [2020-10-26 23:46:36,937 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:36,938 INFO L276 IsEmpty]: Start isEmpty. Operand 1010 states and 1361 transitions. [2020-10-26 23:46:36,943 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 125 [2020-10-26 23:46:36,943 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:36,947 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:36,948 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-26 23:46:36,948 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:36,948 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:36,949 INFO L82 PathProgramCache]: Analyzing trace with hash 577578762, now seen corresponding path program 1 times [2020-10-26 23:46:36,949 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:36,949 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1791644315] [2020-10-26 23:46:36,949 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:36,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:37,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:37,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:37,346 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:38,111 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:38,111 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 136 [2020-10-26 23:46:38,111 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:46:38,111 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1122 [2020-10-26 23:46:38,112 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:46:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:38,112 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:38,112 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:38,243 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:38,251 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:38,255 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:38,275 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:38,275 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:38,275 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:38,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-26 23:46:38,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:38,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:38,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:38,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-26 23:46:38,303 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:38,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:38,340 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:38,464 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:38,464 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-26 23:46:38,464 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:38,465 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-26 23:46:38,465 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:38,465 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 75 [2020-10-26 23:46:38,466 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:38,551 INFO L134 CoverageAnalysis]: Checked inductivity of 42 backedges. 42 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-26 23:46:38,553 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1791644315] [2020-10-26 23:46:38,554 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-26 23:46:38,554 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-26 23:46:38,554 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [303170171] [2020-10-26 23:46:38,557 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:46:38,557 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:38,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:46:38,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:46:38,559 INFO L87 Difference]: Start difference. First operand 1010 states and 1361 transitions. Second operand 7 states. [2020-10-26 23:46:46,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:46:46,857 INFO L93 Difference]: Finished difference Result 2077 states and 3011 transitions. [2020-10-26 23:46:46,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:46:46,859 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 124 [2020-10-26 23:46:46,860 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:46:46,868 INFO L225 Difference]: With dead ends: 2077 [2020-10-26 23:46:46,868 INFO L226 Difference]: Without dead ends: 1380 [2020-10-26 23:46:46,871 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:46:46,873 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1380 states. [2020-10-26 23:46:46,916 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1380 to 1341. [2020-10-26 23:46:46,916 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1341 states. [2020-10-26 23:46:46,922 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1341 states to 1341 states and 1735 transitions. [2020-10-26 23:46:46,922 INFO L78 Accepts]: Start accepts. Automaton has 1341 states and 1735 transitions. Word has length 124 [2020-10-26 23:46:46,922 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:46:46,923 INFO L481 AbstractCegarLoop]: Abstraction has 1341 states and 1735 transitions. [2020-10-26 23:46:46,923 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:46:46,923 INFO L276 IsEmpty]: Start isEmpty. Operand 1341 states and 1735 transitions. [2020-10-26 23:46:46,928 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 225 [2020-10-26 23:46:46,928 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:46:46,929 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:46:46,929 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-26 23:46:46,929 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:46:46,930 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:46:46,930 INFO L82 PathProgramCache]: Analyzing trace with hash 1334894784, now seen corresponding path program 1 times [2020-10-26 23:46:46,930 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:46:46,930 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [3817995] [2020-10-26 23:46:46,931 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:46:46,989 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:47,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:47,207 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:47,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:48,981 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:49,987 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:50,095 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,027 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:52,027 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 238 [2020-10-26 23:46:52,027 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 229 [2020-10-26 23:46:52,028 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:52,248 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:46:52,258 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:52,262 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,279 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:52,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:46:52,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:52,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-26 23:46:52,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:46:52,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:46:52,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:46:52,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:46:52,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:46:52,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:52,381 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,570 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:52,570 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:46:52,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:46:52,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 214 [2020-10-26 23:46:52,571 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:46:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:52,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-26 23:46:52,573 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-26 23:46:52,666 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:46:52,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:46:52,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:52,791 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:46:53,189 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:46:53,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 80 [2020-10-26 23:46:53,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 489 [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 80 [2020-10-26 23:46:53,190 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:46:53,979 INFO L134 CoverageAnalysis]: Checked inductivity of 163 backedges. 0 proven. 153 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2020-10-26 23:46:53,980 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [3817995] [2020-10-26 23:46:53,980 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:46:53,980 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:46:53,981 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1346200732] [2020-10-26 23:46:53,982 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-26 23:46:53,982 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:46:53,982 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-26 23:46:53,983 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:46:53,983 INFO L87 Difference]: Start difference. First operand 1341 states and 1735 transitions. Second operand 11 states. [2020-10-26 23:46:54,288 WARN L193 SmtUtils]: Spent 204.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 74 [2020-10-26 23:46:55,501 WARN L193 SmtUtils]: Spent 176.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 69 [2020-10-26 23:46:56,406 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 86 DAG size of output: 77 [2020-10-26 23:46:56,871 WARN L193 SmtUtils]: Spent 236.00 ms on a formula simplification. DAG size of input: 92 DAG size of output: 84 [2020-10-26 23:46:57,109 WARN L193 SmtUtils]: Spent 201.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 76 [2020-10-26 23:46:58,218 WARN L193 SmtUtils]: Spent 186.00 ms on a formula simplification. DAG size of input: 83 DAG size of output: 79 [2020-10-26 23:46:58,659 WARN L193 SmtUtils]: Spent 231.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 85 [2020-10-26 23:46:58,886 WARN L193 SmtUtils]: Spent 194.00 ms on a formula simplification. DAG size of input: 82 DAG size of output: 78 [2020-10-26 23:46:59,267 WARN L193 SmtUtils]: Spent 185.00 ms on a formula simplification. DAG size of input: 88 DAG size of output: 75 [2020-10-26 23:47:07,595 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 46 DAG size of output: 36 [2020-10-26 23:47:10,810 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:10,810 INFO L93 Difference]: Finished difference Result 3171 states and 4356 transitions. [2020-10-26 23:47:10,812 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 31 states. [2020-10-26 23:47:10,812 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 224 [2020-10-26 23:47:10,813 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:10,829 INFO L225 Difference]: With dead ends: 3171 [2020-10-26 23:47:10,829 INFO L226 Difference]: Without dead ends: 2454 [2020-10-26 23:47:10,834 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 274 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=283, Invalid=839, Unknown=0, NotChecked=0, Total=1122 [2020-10-26 23:47:10,837 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2454 states. [2020-10-26 23:47:10,917 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2454 to 2298. [2020-10-26 23:47:10,917 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2298 states. [2020-10-26 23:47:10,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2298 states to 2298 states and 2947 transitions. [2020-10-26 23:47:10,927 INFO L78 Accepts]: Start accepts. Automaton has 2298 states and 2947 transitions. Word has length 224 [2020-10-26 23:47:10,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:10,928 INFO L481 AbstractCegarLoop]: Abstraction has 2298 states and 2947 transitions. [2020-10-26 23:47:10,928 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-26 23:47:10,928 INFO L276 IsEmpty]: Start isEmpty. Operand 2298 states and 2947 transitions. [2020-10-26 23:47:10,937 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 347 [2020-10-26 23:47:10,937 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:10,938 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:10,938 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-26 23:47:10,938 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:10,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:10,939 INFO L82 PathProgramCache]: Analyzing trace with hash 1623639789, now seen corresponding path program 1 times [2020-10-26 23:47:10,939 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:10,940 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [312232596] [2020-10-26 23:47:10,940 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:11,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:11,116 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:11,356 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:13,012 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:14,105 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,079 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 360 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:47:16,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 206 [2020-10-26 23:47:16,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:16,239 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:16,245 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:16,248 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,259 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:16,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:16,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:16,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-26 23:47:16,260 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:16,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:47:16,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:16,287 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:16,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:16,376 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:16,827 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:16,827 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:47:16,827 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:16,827 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 487 [2020-10-26 23:47:16,828 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:16,828 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:47:16,828 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:17,216 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 208 [2020-10-26 23:47:17,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:17,258 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:17,304 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:17,304 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:17,304 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:17,306 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:17,861 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 84 proven. 91 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-26 23:47:17,861 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [312232596] [2020-10-26 23:47:17,862 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:17,862 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:17,862 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [776736936] [2020-10-26 23:47:17,863 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:17,863 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:17,863 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:17,864 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:17,864 INFO L87 Difference]: Start difference. First operand 2298 states and 2947 transitions. Second operand 7 states. [2020-10-26 23:47:26,858 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:26,858 INFO L93 Difference]: Finished difference Result 4347 states and 5756 transitions. [2020-10-26 23:47:26,860 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:47:26,860 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 346 [2020-10-26 23:47:26,862 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:26,879 INFO L225 Difference]: With dead ends: 4347 [2020-10-26 23:47:26,879 INFO L226 Difference]: Without dead ends: 2362 [2020-10-26 23:47:26,887 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:47:26,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2362 states. [2020-10-26 23:47:26,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2362 to 2301. [2020-10-26 23:47:26,964 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 2301 states. [2020-10-26 23:47:26,973 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2301 states to 2301 states and 2943 transitions. [2020-10-26 23:47:26,974 INFO L78 Accepts]: Start accepts. Automaton has 2301 states and 2943 transitions. Word has length 346 [2020-10-26 23:47:26,975 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:26,975 INFO L481 AbstractCegarLoop]: Abstraction has 2301 states and 2943 transitions. [2020-10-26 23:47:26,975 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:26,975 INFO L276 IsEmpty]: Start isEmpty. Operand 2301 states and 2943 transitions. [2020-10-26 23:47:26,985 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 421 [2020-10-26 23:47:26,985 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:26,986 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:26,986 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-26 23:47:26,986 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:26,987 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:26,987 INFO L82 PathProgramCache]: Analyzing trace with hash 1567211460, now seen corresponding path program 1 times [2020-10-26 23:47:26,987 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:26,987 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1332484743] [2020-10-26 23:47:26,988 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:27,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:27,240 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:27,820 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:28,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:29,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:29,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 434 [2020-10-26 23:47:29,974 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:47:29,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2826 [2020-10-26 23:47:29,974 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:29,974 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:47:29,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:47:29,975 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:30,199 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:30,207 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:30,209 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:30,216 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:30,216 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:30,216 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:30,216 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:47:30,217 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:30,217 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:30,217 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:30,334 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:30,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:30,755 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:30,755 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:47:30,755 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:30,756 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 419 [2020-10-26 23:47:30,756 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:30,756 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:30,757 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:47:30,757 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:30,975 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:47:31,010 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:31,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:31,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:31,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:31,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:31,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 247 [2020-10-26 23:47:31,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:31,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:47:31,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:31,698 INFO L134 CoverageAnalysis]: Checked inductivity of 180 backedges. 177 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-26 23:47:31,699 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1332484743] [2020-10-26 23:47:31,701 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:31,701 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:31,701 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050185249] [2020-10-26 23:47:31,702 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:31,703 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:31,704 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:31,704 INFO L87 Difference]: Start difference. First operand 2301 states and 2943 transitions. Second operand 7 states. [2020-10-26 23:47:43,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:47:43,184 INFO L93 Difference]: Finished difference Result 5302 states and 7186 transitions. [2020-10-26 23:47:43,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-26 23:47:43,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 420 [2020-10-26 23:47:43,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:47:43,206 INFO L225 Difference]: With dead ends: 5302 [2020-10-26 23:47:43,206 INFO L226 Difference]: Without dead ends: 3314 [2020-10-26 23:47:43,213 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:47:43,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3314 states. [2020-10-26 23:47:43,306 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3314 to 3275. [2020-10-26 23:47:43,306 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3275 states. [2020-10-26 23:47:43,319 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3275 states to 3275 states and 4116 transitions. [2020-10-26 23:47:43,319 INFO L78 Accepts]: Start accepts. Automaton has 3275 states and 4116 transitions. Word has length 420 [2020-10-26 23:47:43,320 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:47:43,321 INFO L481 AbstractCegarLoop]: Abstraction has 3275 states and 4116 transitions. [2020-10-26 23:47:43,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:47:43,321 INFO L276 IsEmpty]: Start isEmpty. Operand 3275 states and 4116 transitions. [2020-10-26 23:47:43,333 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 442 [2020-10-26 23:47:43,333 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:47:43,334 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:47:43,334 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-26 23:47:43,334 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:47:43,335 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:47:43,335 INFO L82 PathProgramCache]: Analyzing trace with hash -297484768, now seen corresponding path program 1 times [2020-10-26 23:47:43,335 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:47:43,335 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [124295979] [2020-10-26 23:47:43,336 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:47:43,444 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:43,590 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,777 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:43,939 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:45,918 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:46,130 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:47,664 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,508 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:48,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 457 [2020-10-26 23:47:48,509 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-26 23:47:48,509 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5053 [2020-10-26 23:47:48,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-26 23:47:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-26 23:47:48,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 301 [2020-10-26 23:47:48,510 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,694 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:47:48,698 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,699 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:48,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:47:48,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:48,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-26 23:47:48,706 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:47:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:48,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:47:48,707 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,732 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:47:48,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:48,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:47:48,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:47:48,857 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-26 23:47:48,857 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:48,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 103 [2020-10-26 23:47:48,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:48,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:49,045 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:49,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 201 [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 784 [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:49,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:49,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 201 [2020-10-26 23:47:49,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:47:49,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 303 [2020-10-26 23:47:49,859 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:47:49,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:47:50,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:47:50,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:47:50,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:47:50,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 213 [2020-10-26 23:47:50,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:47:50,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:47:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:47:50,076 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:47:50,076 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-26 23:47:50,270 INFO L134 CoverageAnalysis]: Checked inductivity of 412 backedges. 310 proven. 6 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:47:50,270 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [124295979] [2020-10-26 23:47:50,271 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:47:50,271 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:47:50,271 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [535626426] [2020-10-26 23:47:50,273 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:47:50,273 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:47:50,274 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:47:50,274 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:47:50,274 INFO L87 Difference]: Start difference. First operand 3275 states and 4116 transitions. Second operand 7 states. [2020-10-26 23:48:07,208 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:07,208 INFO L93 Difference]: Finished difference Result 6968 states and 9036 transitions. [2020-10-26 23:48:07,210 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:07,210 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 441 [2020-10-26 23:48:07,211 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:07,234 INFO L225 Difference]: With dead ends: 6968 [2020-10-26 23:48:07,234 INFO L226 Difference]: Without dead ends: 4301 [2020-10-26 23:48:07,242 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:48:07,248 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4301 states. [2020-10-26 23:48:07,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4301 to 4252. [2020-10-26 23:48:07,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4252 states. [2020-10-26 23:48:07,381 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4252 states to 4252 states and 5115 transitions. [2020-10-26 23:48:07,382 INFO L78 Accepts]: Start accepts. Automaton has 4252 states and 5115 transitions. Word has length 441 [2020-10-26 23:48:07,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:07,382 INFO L481 AbstractCegarLoop]: Abstraction has 4252 states and 5115 transitions. [2020-10-26 23:48:07,383 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:07,383 INFO L276 IsEmpty]: Start isEmpty. Operand 4252 states and 5115 transitions. [2020-10-26 23:48:07,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 517 [2020-10-26 23:48:07,393 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:07,394 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:07,394 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-26 23:48:07,394 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:07,395 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:07,395 INFO L82 PathProgramCache]: Analyzing trace with hash -862411746, now seen corresponding path program 1 times [2020-10-26 23:48:07,395 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:07,395 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1515779777] [2020-10-26 23:48:07,395 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:07,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:07,645 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:07,858 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:08,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:10,333 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:12,577 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:12,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 532 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5023 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 474 [2020-10-26 23:48:12,578 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:12,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:12,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:12,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:12,780 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:12,780 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:12,780 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-26 23:48:12,781 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:12,807 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:12,852 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:12,891 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:13,258 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:13,259 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:13,260 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 275 [2020-10-26 23:48:13,260 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:13,466 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:48:13,477 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:13,487 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:13,634 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:13,634 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-26 23:48:13,634 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:13,634 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 155 [2020-10-26 23:48:13,635 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:13,635 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 70 [2020-10-26 23:48:13,635 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:13,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 351 [2020-10-26 23:48:13,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:13,716 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:13,882 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:13,882 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:48:13,882 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:13,882 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 186 [2020-10-26 23:48:13,883 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:13,883 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:48:13,883 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:14,198 INFO L134 CoverageAnalysis]: Checked inductivity of 385 backedges. 128 proven. 4 refuted. 0 times theorem prover too weak. 253 trivial. 0 not checked. [2020-10-26 23:48:14,198 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1515779777] [2020-10-26 23:48:14,199 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:14,199 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6] total 6 [2020-10-26 23:48:14,199 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1252760900] [2020-10-26 23:48:14,200 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:14,200 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:14,201 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:14,201 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:14,201 INFO L87 Difference]: Start difference. First operand 4252 states and 5115 transitions. Second operand 7 states. [2020-10-26 23:48:26,808 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:26,809 INFO L93 Difference]: Finished difference Result 9508 states and 11814 transitions. [2020-10-26 23:48:26,815 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-26 23:48:26,816 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 516 [2020-10-26 23:48:26,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:26,844 INFO L225 Difference]: With dead ends: 9508 [2020-10-26 23:48:26,844 INFO L226 Difference]: Without dead ends: 5876 [2020-10-26 23:48:26,854 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2020-10-26 23:48:26,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 5876 states. [2020-10-26 23:48:27,003 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 5876 to 5811. [2020-10-26 23:48:27,003 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5811 states. [2020-10-26 23:48:27,016 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5811 states to 5811 states and 6758 transitions. [2020-10-26 23:48:27,017 INFO L78 Accepts]: Start accepts. Automaton has 5811 states and 6758 transitions. Word has length 516 [2020-10-26 23:48:27,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:27,018 INFO L481 AbstractCegarLoop]: Abstraction has 5811 states and 6758 transitions. [2020-10-26 23:48:27,018 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:27,018 INFO L276 IsEmpty]: Start isEmpty. Operand 5811 states and 6758 transitions. [2020-10-26 23:48:27,026 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 532 [2020-10-26 23:48:27,027 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:27,028 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:27,028 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-26 23:48:27,028 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:27,029 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:27,029 INFO L82 PathProgramCache]: Analyzing trace with hash 495580182, now seen corresponding path program 1 times [2020-10-26 23:48:27,029 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:27,029 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [395795698] [2020-10-26 23:48:27,030 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:27,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:27,210 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:27,355 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:29,352 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:30,681 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 547 [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:32,155 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 284 [2020-10-26 23:48:32,156 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 114 [2020-10-26 23:48:32,156 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:32,400 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:32,403 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:32,404 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:32,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:32,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:32,411 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-26 23:48:32,411 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:32,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:32,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:32,448 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:32,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:32,528 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:32,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 275 [2020-10-26 23:48:32,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 187 [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 269 [2020-10-26 23:48:32,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:32,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 282 [2020-10-26 23:48:32,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:32,803 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 126 [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:32,918 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:32,919 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:48:32,919 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:33,070 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 393 [2020-10-26 23:48:33,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:33,093 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 94 [2020-10-26 23:48:33,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:33,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:33,512 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 238 proven. 95 refuted. 0 times theorem prover too weak. 96 trivial. 0 not checked. [2020-10-26 23:48:33,513 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [395795698] [2020-10-26 23:48:33,513 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:33,513 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:33,514 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [447270539] [2020-10-26 23:48:33,515 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:33,515 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:33,516 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:33,516 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:33,516 INFO L87 Difference]: Start difference. First operand 5811 states and 6758 transitions. Second operand 7 states. [2020-10-26 23:48:35,793 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:48:38,094 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 68 [2020-10-26 23:48:45,524 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:48:45,524 INFO L93 Difference]: Finished difference Result 12940 states and 15082 transitions. [2020-10-26 23:48:45,527 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:48:45,528 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 531 [2020-10-26 23:48:45,529 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:48:45,570 INFO L225 Difference]: With dead ends: 12940 [2020-10-26 23:48:45,570 INFO L226 Difference]: Without dead ends: 7751 [2020-10-26 23:48:45,587 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-10-26 23:48:45,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 7751 states. [2020-10-26 23:48:45,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 7751 to 7385. [2020-10-26 23:48:45,819 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 7385 states. [2020-10-26 23:48:45,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 7385 states to 7385 states and 8452 transitions. [2020-10-26 23:48:45,838 INFO L78 Accepts]: Start accepts. Automaton has 7385 states and 8452 transitions. Word has length 531 [2020-10-26 23:48:45,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:48:45,839 INFO L481 AbstractCegarLoop]: Abstraction has 7385 states and 8452 transitions. [2020-10-26 23:48:45,840 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:48:45,840 INFO L276 IsEmpty]: Start isEmpty. Operand 7385 states and 8452 transitions. [2020-10-26 23:48:45,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 544 [2020-10-26 23:48:45,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:48:45,851 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:48:45,851 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-26 23:48:45,852 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:48:45,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:48:45,852 INFO L82 PathProgramCache]: Analyzing trace with hash -430898290, now seen corresponding path program 1 times [2020-10-26 23:48:45,853 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:48:45,853 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [679139428] [2020-10-26 23:48:45,853 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:48:45,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:46,151 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:46,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:47,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:48,126 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:48,502 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:48,502 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 559 [2020-10-26 23:48:48,503 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-26 23:48:48,503 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2485 [2020-10-26 23:48:48,504 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:48:48,504 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 99 [2020-10-26 23:48:48,504 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:48,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:48:48,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:48,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:48,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:48,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:48,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:48,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:48:48,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:48,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:48:48,834 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:48,835 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:48:48,835 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:49,002 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:48:49,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:49,032 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:49,088 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:48:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:48:49,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:48:49,089 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:49,111 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:48:49,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:48:49,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:48:49,286 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:48:49,286 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 97 [2020-10-26 23:48:49,286 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:48:49,286 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 154 [2020-10-26 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 97 [2020-10-26 23:48:49,287 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:48:49,548 INFO L134 CoverageAnalysis]: Checked inductivity of 429 backedges. 317 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:48:49,549 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [679139428] [2020-10-26 23:48:49,549 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:48:49,549 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:48:49,549 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1670918095] [2020-10-26 23:48:49,550 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:48:49,551 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:48:49,551 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:48:49,551 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:48:49,551 INFO L87 Difference]: Start difference. First operand 7385 states and 8452 transitions. Second operand 7 states. [2020-10-26 23:49:01,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:01,488 INFO L93 Difference]: Finished difference Result 15802 states and 18718 transitions. [2020-10-26 23:49:01,490 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-26 23:49:01,491 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 543 [2020-10-26 23:49:01,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:01,522 INFO L225 Difference]: With dead ends: 15802 [2020-10-26 23:49:01,523 INFO L226 Difference]: Without dead ends: 9039 [2020-10-26 23:49:01,541 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-26 23:49:01,558 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9039 states. [2020-10-26 23:49:01,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9039 to 8991. [2020-10-26 23:49:01,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8991 states. [2020-10-26 23:49:01,858 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8991 states to 8991 states and 10511 transitions. [2020-10-26 23:49:01,860 INFO L78 Accepts]: Start accepts. Automaton has 8991 states and 10511 transitions. Word has length 543 [2020-10-26 23:49:01,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:01,861 INFO L481 AbstractCegarLoop]: Abstraction has 8991 states and 10511 transitions. [2020-10-26 23:49:01,862 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-26 23:49:01,862 INFO L276 IsEmpty]: Start isEmpty. Operand 8991 states and 10511 transitions. [2020-10-26 23:49:01,874 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 571 [2020-10-26 23:49:01,874 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:01,875 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:01,875 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-26 23:49:01,875 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:01,876 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:01,876 INFO L82 PathProgramCache]: Analyzing trace with hash -1070514417, now seen corresponding path program 1 times [2020-10-26 23:49:01,876 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:01,876 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442807393] [2020-10-26 23:49:01,877 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:02,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:02,167 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:02,372 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:03,816 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:04,158 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:04,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:06,587 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4531 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 296 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 238 [2020-10-26 23:49:06,588 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:06,760 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:06,763 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:06,764 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:06,769 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:06,769 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:06,770 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:06,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:06,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:06,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:07,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 192 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 281 [2020-10-26 23:49:07,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:07,150 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:07,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:07,196 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:07,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:07,374 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:07,374 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 196 [2020-10-26 23:49:07,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-26 23:49:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:07,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 112 [2020-10-26 23:49:07,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:07,465 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:49:07,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:07,498 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:07,703 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:07,703 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 124 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 217 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 124 [2020-10-26 23:49:07,704 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:07,972 INFO L134 CoverageAnalysis]: Checked inductivity of 469 backedges. 352 proven. 114 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-26 23:49:07,973 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [442807393] [2020-10-26 23:49:07,973 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:07,973 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-26 23:49:07,974 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [71502726] [2020-10-26 23:49:07,975 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-26 23:49:07,975 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:07,975 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-26 23:49:07,976 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-26 23:49:07,976 INFO L87 Difference]: Start difference. First operand 8991 states and 10511 transitions. Second operand 10 states. [2020-10-26 23:49:14,748 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:49:15,651 WARN L193 SmtUtils]: Spent 107.00 ms on a formula simplification that was a NOOP. DAG size: 66 [2020-10-26 23:49:17,358 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-26 23:49:31,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-26 23:49:31,645 INFO L93 Difference]: Finished difference Result 18081 states and 25398 transitions. [2020-10-26 23:49:31,647 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 36 states. [2020-10-26 23:49:31,647 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 570 [2020-10-26 23:49:31,648 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-26 23:49:31,728 INFO L225 Difference]: With dead ends: 18081 [2020-10-26 23:49:31,729 INFO L226 Difference]: Without dead ends: 12826 [2020-10-26 23:49:31,752 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 18 SyntacticMatches, 1 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 329 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=284, Invalid=1048, Unknown=0, NotChecked=0, Total=1332 [2020-10-26 23:49:31,771 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 12826 states. [2020-10-26 23:49:32,132 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 12826 to 12529. [2020-10-26 23:49:32,133 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 12529 states. [2020-10-26 23:49:32,162 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12529 states to 12529 states and 14766 transitions. [2020-10-26 23:49:32,162 INFO L78 Accepts]: Start accepts. Automaton has 12529 states and 14766 transitions. Word has length 570 [2020-10-26 23:49:32,164 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-26 23:49:32,164 INFO L481 AbstractCegarLoop]: Abstraction has 12529 states and 14766 transitions. [2020-10-26 23:49:32,164 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-26 23:49:32,164 INFO L276 IsEmpty]: Start isEmpty. Operand 12529 states and 14766 transitions. [2020-10-26 23:49:32,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 576 [2020-10-26 23:49:32,174 INFO L414 BasicCegarLoop]: Found error trace [2020-10-26 23:49:32,175 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-26 23:49:32,175 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-26 23:49:32,175 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-26 23:49:32,176 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-26 23:49:32,176 INFO L82 PathProgramCache]: Analyzing trace with hash 631971186, now seen corresponding path program 1 times [2020-10-26 23:49:32,176 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-26 23:49:32,176 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [933030009] [2020-10-26 23:49:32,177 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-26 23:49:32,312 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:32,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:32,779 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:34,951 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 591 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4030 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 409 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 131 [2020-10-26 23:49:36,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:36,630 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-26 23:49:36,633 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:36,634 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:36,638 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:36,639 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:36,639 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:36,668 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-26 23:49:36,691 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:36,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 287 [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 120 [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:36,813 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-26 23:49:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:36,814 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-26 23:49:36,814 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:36,945 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 294 [2020-10-26 23:49:36,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:36,998 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 112 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 185 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-26 23:49:37,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 106 [2020-10-26 23:49:37,159 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:37,181 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 405 [2020-10-26 23:49:37,204 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-26 23:49:37,218 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 152 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: SHALLOWEST [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 129 [2020-10-26 23:49:37,357 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-26 23:49:37,590 INFO L134 CoverageAnalysis]: Checked inductivity of 476 backedges. 364 proven. 2 refuted. 0 times theorem prover too weak. 110 trivial. 0 not checked. [2020-10-26 23:49:37,591 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [933030009] [2020-10-26 23:49:37,591 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-26 23:49:37,591 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-26 23:49:37,591 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [117128097] [2020-10-26 23:49:37,592 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-26 23:49:37,592 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-26 23:49:37,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-26 23:49:37,593 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-26 23:49:37,593 INFO L87 Difference]: Start difference. First operand 12529 states and 14766 transitions. Second operand 7 states. [2020-10-26 23:49:37,737 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 65 [2020-10-26 23:49:42,826 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 65