/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 17:36:44,648 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 17:36:44,651 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 17:36:44,708 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 17:36:44,708 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 17:36:44,714 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 17:36:44,716 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 17:36:44,721 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 17:36:44,732 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 17:36:44,738 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 17:36:44,739 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 17:36:44,741 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 17:36:44,741 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 17:36:44,744 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 17:36:44,746 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 17:36:44,747 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 17:36:44,748 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 17:36:44,751 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 17:36:44,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 17:36:44,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 17:36:44,768 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 17:36:44,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 17:36:44,772 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 17:36:44,774 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 17:36:44,781 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 17:36:44,782 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 17:36:44,782 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 17:36:44,784 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 17:36:44,785 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 17:36:44,786 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 17:36:44,786 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 17:36:44,787 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 17:36:44,789 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 17:36:44,790 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 17:36:44,790 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 17:36:44,791 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 17:36:44,791 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 17:36:44,792 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 17:36:44,792 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 17:36:44,793 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 17:36:44,793 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 17:36:44,801 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 17:36:44,847 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 17:36:44,847 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 17:36:44,852 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 17:36:44,853 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 17:36:44,854 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 17:36:44,854 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 17:36:44,854 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 17:36:44,854 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 17:36:44,854 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 17:36:44,855 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 17:36:44,856 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 17:36:44,856 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 17:36:44,857 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 17:36:44,857 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 17:36:44,857 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 17:36:44,857 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 17:36:44,857 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 17:36:44,858 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 17:36:44,858 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 17:36:44,859 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 17:36:44,859 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 17:36:44,865 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:36:44,865 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 17:36:44,866 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 17:36:44,866 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 17:36:44,866 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 17:36:44,866 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 17:36:44,866 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 17:36:44,868 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 17:36:44,868 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 17:36:45,239 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 17:36:45,268 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 17:36:45,272 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 17:36:45,273 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 17:36:45,274 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 17:36:45,276 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2020-10-27 17:36:45,358 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58565384/17e9473a831a48f1b2b1847a65123320/FLAG9b2135075 [2020-10-27 17:36:46,100 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 17:36:46,101 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/eca-rers2012/Problem11_label54.c [2020-10-27 17:36:46,127 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58565384/17e9473a831a48f1b2b1847a65123320/FLAG9b2135075 [2020-10-27 17:36:46,241 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/f58565384/17e9473a831a48f1b2b1847a65123320 [2020-10-27 17:36:46,244 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 17:36:46,250 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 17:36:46,252 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 17:36:46,252 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 17:36:46,258 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 17:36:46,259 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:36:46" (1/1) ... [2020-10-27 17:36:46,262 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@73f9c0b0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:46, skipping insertion in model container [2020-10-27 17:36:46,262 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 05:36:46" (1/1) ... [2020-10-27 17:36:46,277 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 17:36:46,375 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 17:36:46,984 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:36:46,993 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 17:36:47,158 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 17:36:47,176 INFO L208 MainTranslator]: Completed translation [2020-10-27 17:36:47,176 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47 WrapperNode [2020-10-27 17:36:47,176 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 17:36:47,177 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 17:36:47,178 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 17:36:47,178 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 17:36:47,191 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,191 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,226 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,226 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,348 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,373 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,387 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... [2020-10-27 17:36:47,402 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 17:36:47,403 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 17:36:47,404 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 17:36:47,404 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 17:36:47,405 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 17:36:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 17:36:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 17:36:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 17:36:47,482 INFO L138 BoogieDeclarations]: Found implementation of procedure calculate_output [2020-10-27 17:36:47,483 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 17:36:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure calculate_output [2020-10-27 17:36:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 17:36:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 17:36:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 17:36:47,483 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 17:36:47,484 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 17:36:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 17:36:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 17:36:47,485 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 17:36:49,895 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 17:36:49,896 INFO L298 CfgBuilder]: Removed 1 assume(true) statements. [2020-10-27 17:36:49,899 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:36:49 BoogieIcfgContainer [2020-10-27 17:36:49,899 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 17:36:49,902 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 17:36:49,902 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 17:36:49,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 17:36:49,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 05:36:46" (1/3) ... [2020-10-27 17:36:49,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afa1ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:36:49, skipping insertion in model container [2020-10-27 17:36:49,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 05:36:47" (2/3) ... [2020-10-27 17:36:49,908 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2afa1ac8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 05:36:49, skipping insertion in model container [2020-10-27 17:36:49,908 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 05:36:49" (3/3) ... [2020-10-27 17:36:49,910 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem11_label54.c [2020-10-27 17:36:49,925 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 17:36:49,931 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 17:36:49,944 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 17:36:49,974 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 17:36:49,975 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 17:36:49,975 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 17:36:49,975 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 17:36:49,975 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 17:36:49,975 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 17:36:49,975 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 17:36:49,975 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 17:36:49,999 INFO L276 IsEmpty]: Start isEmpty. Operand 296 states. [2020-10-27 17:36:50,007 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-10-27 17:36:50,008 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:36:50,009 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] [2020-10-27 17:36:50,009 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:36:50,015 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:36:50,016 INFO L82 PathProgramCache]: Analyzing trace with hash 1077838480, now seen corresponding path program 1 times [2020-10-27 17:36:50,026 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:36:50,026 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1098417476] [2020-10-27 17:36:50,027 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:36:50,201 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:50,297 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:50,724 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:36:50,724 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 54 [2020-10-27 17:36:50,725 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:36:50,725 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 518 [2020-10-27 17:36:50,727 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:36:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:36:50,727 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:36:50,728 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 17:36:50,728 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 17:36:50,927 WARN L193 SmtUtils]: Spent 104.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 17:36:50,928 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:36:50,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:50,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:50,970 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:36:50,970 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:36:50,970 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:36:50,970 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 17:36:50,971 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:36:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:36:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:36:50,971 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:36:50,972 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:36:51,015 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:36:51,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1098417476] [2020-10-27 17:36:51,018 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 17:36:51,019 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 17:36:51,019 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [510016527] [2020-10-27 17:36:51,025 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:36:51,025 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:36:51,039 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:36:51,040 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:36:51,042 INFO L87 Difference]: Start difference. First operand 296 states. Second operand 5 states. [2020-10-27 17:36:51,235 WARN L193 SmtUtils]: Spent 142.00 ms on a formula simplification that was a NOOP. DAG size: 69 [2020-10-27 17:36:54,418 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:36:54,418 INFO L93 Difference]: Finished difference Result 798 states and 1400 transitions. [2020-10-27 17:36:54,419 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:36:54,421 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 44 [2020-10-27 17:36:54,422 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:36:54,458 INFO L225 Difference]: With dead ends: 798 [2020-10-27 17:36:54,459 INFO L226 Difference]: Without dead ends: 438 [2020-10-27 17:36:54,474 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:36:54,498 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 438 states. [2020-10-27 17:36:54,567 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 438 to 423. [2020-10-27 17:36:54,568 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-27 17:36:54,572 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 674 transitions. [2020-10-27 17:36:54,574 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 674 transitions. Word has length 44 [2020-10-27 17:36:54,575 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:36:54,575 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 674 transitions. [2020-10-27 17:36:54,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:36:54,575 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 674 transitions. [2020-10-27 17:36:54,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 114 [2020-10-27 17:36:54,581 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:36:54,581 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:36:54,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 17:36:54,582 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:36:54,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:36:54,583 INFO L82 PathProgramCache]: Analyzing trace with hash -1996150572, now seen corresponding path program 1 times [2020-10-27 17:36:54,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:36:54,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1071451584] [2020-10-27 17:36:54,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:36:54,653 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:54,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:54,826 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:55,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:56,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:36:56,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 125 [2020-10-27 17:36:56,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:36:56,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2024 [2020-10-27 17:36:56,684 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:36:56,684 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:36:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 79 [2020-10-27 17:36:56,685 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 17:36:56,685 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:36:56,916 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:36:56,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:56,924 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:56,930 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:36:56,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:36:56,934 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:36:56,934 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:36:56,934 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:36:56,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:36:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:36:56,935 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:36:56,936 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:36:56,957 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:36:56,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:57,011 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:57,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:36:57,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 17:36:57,132 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:36:57,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 17:36:57,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:36:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:36:57,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:36:57,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 17:36:57,135 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:36:57,236 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:36:57,236 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1071451584] [2020-10-27 17:36:57,236 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:36:57,237 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:36:57,237 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1347268011] [2020-10-27 17:36:57,239 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:36:57,240 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:36:57,245 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:36:57,245 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:36:57,246 INFO L87 Difference]: Start difference. First operand 423 states and 674 transitions. Second operand 5 states. [2020-10-27 17:36:57,703 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 17:36:59,287 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:36:59,288 INFO L93 Difference]: Finished difference Result 869 states and 1380 transitions. [2020-10-27 17:36:59,288 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:36:59,289 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 113 [2020-10-27 17:36:59,290 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:36:59,294 INFO L225 Difference]: With dead ends: 869 [2020-10-27 17:36:59,294 INFO L226 Difference]: Without dead ends: 430 [2020-10-27 17:36:59,297 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:36:59,298 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 430 states. [2020-10-27 17:36:59,357 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 430 to 423. [2020-10-27 17:36:59,357 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 423 states. [2020-10-27 17:36:59,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 423 states to 423 states and 672 transitions. [2020-10-27 17:36:59,361 INFO L78 Accepts]: Start accepts. Automaton has 423 states and 672 transitions. Word has length 113 [2020-10-27 17:36:59,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:36:59,362 INFO L481 AbstractCegarLoop]: Abstraction has 423 states and 672 transitions. [2020-10-27 17:36:59,362 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:36:59,362 INFO L276 IsEmpty]: Start isEmpty. Operand 423 states and 672 transitions. [2020-10-27 17:36:59,364 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 117 [2020-10-27 17:36:59,364 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:36:59,365 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:36:59,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 17:36:59,366 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:36:59,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:36:59,366 INFO L82 PathProgramCache]: Analyzing trace with hash -553479380, now seen corresponding path program 1 times [2020-10-27 17:36:59,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:36:59,367 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [408650635] [2020-10-27 17:36:59,367 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:36:59,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:36:59,448 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:36:59,559 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:00,489 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:00,889 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:00,889 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 128 [2020-10-27 17:37:00,889 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1471 [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 82 [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 17:37:00,890 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:01,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:01,026 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:01,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:01,032 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:01,032 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:01,032 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:01,032 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:01,033 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:01,033 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:01,033 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:01,051 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:01,071 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:01,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:01,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:01,174 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:37:01,174 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:01,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 17:37:01,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:01,175 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 67 [2020-10-27 17:37:01,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:01,218 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:01,219 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [408650635] [2020-10-27 17:37:01,219 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:01,219 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:01,220 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [649076490] [2020-10-27 17:37:01,220 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:01,220 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:01,221 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:01,221 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:01,221 INFO L87 Difference]: Start difference. First operand 423 states and 672 transitions. Second operand 5 states. [2020-10-27 17:37:03,805 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:03,805 INFO L93 Difference]: Finished difference Result 1233 states and 1991 transitions. [2020-10-27 17:37:03,806 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:03,806 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 116 [2020-10-27 17:37:03,807 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:03,812 INFO L225 Difference]: With dead ends: 1233 [2020-10-27 17:37:03,812 INFO L226 Difference]: Without dead ends: 816 [2020-10-27 17:37:03,814 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:03,815 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 816 states. [2020-10-27 17:37:03,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 816 to 806. [2020-10-27 17:37:03,840 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 806 states. [2020-10-27 17:37:03,845 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 806 states to 806 states and 1261 transitions. [2020-10-27 17:37:03,846 INFO L78 Accepts]: Start accepts. Automaton has 806 states and 1261 transitions. Word has length 116 [2020-10-27 17:37:03,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:03,846 INFO L481 AbstractCegarLoop]: Abstraction has 806 states and 1261 transitions. [2020-10-27 17:37:03,847 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:03,847 INFO L276 IsEmpty]: Start isEmpty. Operand 806 states and 1261 transitions. [2020-10-27 17:37:03,850 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 118 [2020-10-27 17:37:03,850 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:03,850 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:03,850 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 17:37:03,850 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:03,851 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:03,851 INFO L82 PathProgramCache]: Analyzing trace with hash 571758796, now seen corresponding path program 1 times [2020-10-27 17:37:03,851 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:03,852 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [129611015] [2020-10-27 17:37:03,852 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:03,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:03,907 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:03,957 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:05,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:05,236 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 17:37:05,236 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:37:05,237 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1348 [2020-10-27 17:37:05,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:37:05,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 17:37:05,238 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:05,339 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:05,344 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:05,345 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:05,350 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:05,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:05,351 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:05,351 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:05,351 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:05,351 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:05,352 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:05,352 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:05,368 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:05,387 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:05,400 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:05,461 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 73 [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:05,462 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:05,463 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:37:05,463 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:05,519 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:05,520 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [129611015] [2020-10-27 17:37:05,520 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:05,520 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:05,521 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [820490281] [2020-10-27 17:37:05,522 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:05,522 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:05,531 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:05,531 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:05,532 INFO L87 Difference]: Start difference. First operand 806 states and 1261 transitions. Second operand 5 states. [2020-10-27 17:37:08,668 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:08,669 INFO L93 Difference]: Finished difference Result 2391 states and 3825 transitions. [2020-10-27 17:37:08,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:08,670 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 117 [2020-10-27 17:37:08,671 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:08,688 INFO L225 Difference]: With dead ends: 2391 [2020-10-27 17:37:08,689 INFO L226 Difference]: Without dead ends: 1591 [2020-10-27 17:37:08,693 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:08,696 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1591 states. [2020-10-27 17:37:08,773 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1591 to 1581. [2020-10-27 17:37:08,773 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1581 states. [2020-10-27 17:37:08,784 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1581 states to 1581 states and 2357 transitions. [2020-10-27 17:37:08,785 INFO L78 Accepts]: Start accepts. Automaton has 1581 states and 2357 transitions. Word has length 117 [2020-10-27 17:37:08,786 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:08,786 INFO L481 AbstractCegarLoop]: Abstraction has 1581 states and 2357 transitions. [2020-10-27 17:37:08,787 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:08,787 INFO L276 IsEmpty]: Start isEmpty. Operand 1581 states and 2357 transitions. [2020-10-27 17:37:08,796 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 140 [2020-10-27 17:37:08,796 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:08,797 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:08,797 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 17:37:08,797 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:08,797 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:08,798 INFO L82 PathProgramCache]: Analyzing trace with hash -781985632, now seen corresponding path program 1 times [2020-10-27 17:37:08,798 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:08,798 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2012793420] [2020-10-27 17:37:08,798 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:08,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:08,875 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:09,102 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:09,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:09,923 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:09,923 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 151 [2020-10-27 17:37:09,923 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:09,924 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1083 [2020-10-27 17:37:09,924 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 105 [2020-10-27 17:37:09,924 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 42 [2020-10-27 17:37:09,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:10,026 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:10,029 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:10,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:10,037 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:10,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:10,038 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:10,038 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 17:37:10,038 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:10,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:10,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:10,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:10,079 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:10,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:10,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:10,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 17:37:10,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:10,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 90 [2020-10-27 17:37:10,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:10,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:37:10,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:10,230 INFO L134 CoverageAnalysis]: Checked inductivity of 36 backedges. 35 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 17:37:10,230 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2012793420] [2020-10-27 17:37:10,231 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:10,231 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:10,231 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [288597770] [2020-10-27 17:37:10,232 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:10,232 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:10,232 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:10,233 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:10,233 INFO L87 Difference]: Start difference. First operand 1581 states and 2357 transitions. Second operand 5 states. [2020-10-27 17:37:12,791 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:12,791 INFO L93 Difference]: Finished difference Result 3921 states and 6034 transitions. [2020-10-27 17:37:12,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:12,793 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 139 [2020-10-27 17:37:12,796 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:12,816 INFO L225 Difference]: With dead ends: 3921 [2020-10-27 17:37:12,816 INFO L226 Difference]: Without dead ends: 2346 [2020-10-27 17:37:12,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:12,826 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2346 states. [2020-10-27 17:37:12,930 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2346 to 1962. [2020-10-27 17:37:12,931 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-10-27 17:37:12,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2862 transitions. [2020-10-27 17:37:12,941 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2862 transitions. Word has length 139 [2020-10-27 17:37:12,941 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:12,941 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2862 transitions. [2020-10-27 17:37:12,941 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:12,941 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2862 transitions. [2020-10-27 17:37:12,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 271 [2020-10-27 17:37:12,954 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:12,954 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:37:12,954 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 17:37:12,955 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:12,955 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:12,955 INFO L82 PathProgramCache]: Analyzing trace with hash -406733944, now seen corresponding path program 1 times [2020-10-27 17:37:12,955 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:12,956 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47895538] [2020-10-27 17:37:12,956 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:12,997 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:13,034 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:13,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:13,197 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:14,028 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:16,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 284 [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 238 [2020-10-27 17:37:18,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 17:37:18,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:18,218 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:18,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:18,223 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,227 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:18,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:18,247 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:18,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:18,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,278 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,279 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:37:18,279 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:18,279 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:37:18,279 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:18,280 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:18,280 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:18,302 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 17:37:18,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:18,364 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:18,560 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:18,561 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 155 [2020-10-27 17:37:18,561 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:18,561 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 221 [2020-10-27 17:37:18,562 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:18,562 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:18,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 17:37:18,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:18,837 INFO L134 CoverageAnalysis]: Checked inductivity of 144 backedges. 73 proven. 2 refuted. 0 times theorem prover too weak. 69 trivial. 0 not checked. [2020-10-27 17:37:18,838 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [47895538] [2020-10-27 17:37:18,839 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:18,839 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:18,840 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1947677344] [2020-10-27 17:37:18,840 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:18,841 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:18,841 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:18,842 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:18,842 INFO L87 Difference]: Start difference. First operand 1962 states and 2862 transitions. Second operand 5 states. [2020-10-27 17:37:20,737 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:20,738 INFO L93 Difference]: Finished difference Result 3942 states and 5777 transitions. [2020-10-27 17:37:20,739 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:20,740 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 270 [2020-10-27 17:37:20,740 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:20,752 INFO L225 Difference]: With dead ends: 3942 [2020-10-27 17:37:20,752 INFO L226 Difference]: Without dead ends: 1966 [2020-10-27 17:37:20,758 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 1 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:20,761 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 1966 states. [2020-10-27 17:37:20,816 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 1966 to 1962. [2020-10-27 17:37:20,816 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 1962 states. [2020-10-27 17:37:20,825 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 1962 states to 1962 states and 2857 transitions. [2020-10-27 17:37:20,825 INFO L78 Accepts]: Start accepts. Automaton has 1962 states and 2857 transitions. Word has length 270 [2020-10-27 17:37:20,826 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:20,826 INFO L481 AbstractCegarLoop]: Abstraction has 1962 states and 2857 transitions. [2020-10-27 17:37:20,826 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:20,826 INFO L276 IsEmpty]: Start isEmpty. Operand 1962 states and 2857 transitions. [2020-10-27 17:37:20,834 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 278 [2020-10-27 17:37:20,834 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:20,834 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:37:20,834 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 17:37:20,835 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:20,836 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:20,836 INFO L82 PathProgramCache]: Analyzing trace with hash 1385427235, now seen corresponding path program 1 times [2020-10-27 17:37:20,837 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:20,837 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1866730858] [2020-10-27 17:37:20,837 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:20,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:20,910 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:21,266 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:22,134 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:23,121 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:23,121 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 291 [2020-10-27 17:37:23,122 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:23,122 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2239 [2020-10-27 17:37:23,123 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 17:37:23,123 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 17:37:23,124 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:37:23,124 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:23,263 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:23,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:23,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:23,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:23,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:23,287 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:23,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 17:37:23,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:23,288 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:23,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:23,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 17:37:23,319 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:23,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:23,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:23,534 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:23,534 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:37:23,534 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:23,535 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 17:37:23,535 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:23,535 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:37:23,536 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:23,621 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 97 [2020-10-27 17:37:23,665 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:23,690 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:23,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:23,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:37:23,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:23,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:23,929 INFO L134 CoverageAnalysis]: Checked inductivity of 161 backedges. 72 proven. 84 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 17:37:23,929 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1866730858] [2020-10-27 17:37:23,930 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:23,930 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:37:23,930 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1831810099] [2020-10-27 17:37:23,931 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:37:23,931 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:23,932 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:37:23,932 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:37:23,933 INFO L87 Difference]: Start difference. First operand 1962 states and 2857 transitions. Second operand 7 states. [2020-10-27 17:37:27,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:27,309 INFO L93 Difference]: Finished difference Result 5329 states and 7976 transitions. [2020-10-27 17:37:27,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:37:27,309 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 277 [2020-10-27 17:37:27,310 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:27,331 INFO L225 Difference]: With dead ends: 5329 [2020-10-27 17:37:27,332 INFO L226 Difference]: Without dead ends: 3373 [2020-10-27 17:37:27,339 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:37:27,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3373 states. [2020-10-27 17:37:27,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3373 to 3354. [2020-10-27 17:37:27,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3354 states. [2020-10-27 17:37:27,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3354 states to 3354 states and 4684 transitions. [2020-10-27 17:37:27,457 INFO L78 Accepts]: Start accepts. Automaton has 3354 states and 4684 transitions. Word has length 277 [2020-10-27 17:37:27,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:27,458 INFO L481 AbstractCegarLoop]: Abstraction has 3354 states and 4684 transitions. [2020-10-27 17:37:27,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:37:27,458 INFO L276 IsEmpty]: Start isEmpty. Operand 3354 states and 4684 transitions. [2020-10-27 17:37:27,468 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 282 [2020-10-27 17:37:27,468 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:27,469 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:37:27,469 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 17:37:27,470 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:27,471 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:27,471 INFO L82 PathProgramCache]: Analyzing trace with hash -658574252, now seen corresponding path program 1 times [2020-10-27 17:37:27,471 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:27,471 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [549250823] [2020-10-27 17:37:27,472 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:27,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:27,580 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:27,677 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:28,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:31,183 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,575 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,576 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 295 [2020-10-27 17:37:32,576 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:37:32,576 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5038 [2020-10-27 17:37:32,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:37:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 83 [2020-10-27 17:37:32,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 17:37:32,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,725 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:32,728 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,729 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,733 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,733 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:32,733 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:32,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 17:37:32,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:32,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:32,736 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:32,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,788 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:32,848 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:32,848 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:32,849 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 68 [2020-10-27 17:37:32,850 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:32,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 81 [2020-10-27 17:37:32,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:32,961 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:33,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:33,731 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:33,732 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:37:33,732 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:37:33,732 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 810 [2020-10-27 17:37:33,732 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:37:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:33,733 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:37:33,733 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:34,015 INFO L134 CoverageAnalysis]: Checked inductivity of 145 backedges. 142 proven. 2 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:37:34,016 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [549250823] [2020-10-27 17:37:34,016 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:34,016 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:37:34,016 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [677633599] [2020-10-27 17:37:34,017 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:37:34,017 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:34,020 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:37:34,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:37:34,020 INFO L87 Difference]: Start difference. First operand 3354 states and 4684 transitions. Second operand 7 states. [2020-10-27 17:37:39,184 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:39,185 INFO L93 Difference]: Finished difference Result 8372 states and 12402 transitions. [2020-10-27 17:37:39,186 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:37:39,186 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 281 [2020-10-27 17:37:39,187 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:39,214 INFO L225 Difference]: With dead ends: 8372 [2020-10-27 17:37:39,215 INFO L226 Difference]: Without dead ends: 4634 [2020-10-27 17:37:39,227 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:37:39,233 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4634 states. [2020-10-27 17:37:39,367 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4634 to 4622. [2020-10-27 17:37:39,368 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4622 states. [2020-10-27 17:37:39,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4622 states to 4622 states and 6626 transitions. [2020-10-27 17:37:39,385 INFO L78 Accepts]: Start accepts. Automaton has 4622 states and 6626 transitions. Word has length 281 [2020-10-27 17:37:39,385 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:39,385 INFO L481 AbstractCegarLoop]: Abstraction has 4622 states and 6626 transitions. [2020-10-27 17:37:39,386 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:37:39,386 INFO L276 IsEmpty]: Start isEmpty. Operand 4622 states and 6626 transitions. [2020-10-27 17:37:39,400 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 298 [2020-10-27 17:37:39,401 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:39,401 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-10-27 17:37:39,401 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 17:37:39,402 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:39,402 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:39,402 INFO L82 PathProgramCache]: Analyzing trace with hash 1657587867, now seen corresponding path program 1 times [2020-10-27 17:37:39,402 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:39,403 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [989779965] [2020-10-27 17:37:39,403 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:39,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:39,513 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:39,606 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:42,010 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:43,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:43,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 311 [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4057 [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 119 [2020-10-27 17:37:43,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 188 [2020-10-27 17:37:43,531 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:43,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:43,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:43,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:43,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:43,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:43,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:43,721 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:43,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:43,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:43,793 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:43,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:43,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 17:37:43,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:43,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 101 [2020-10-27 17:37:43,879 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:43,879 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 104 [2020-10-27 17:37:43,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:43,918 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 17:37:43,951 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:43,977 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:44,227 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:44,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:37:44,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:44,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 275 [2020-10-27 17:37:44,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:44,228 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:37:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:37:44,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 17:37:44,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:44,452 INFO L134 CoverageAnalysis]: Checked inductivity of 181 backedges. 144 proven. 36 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 17:37:44,458 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [989779965] [2020-10-27 17:37:44,459 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:44,459 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:37:44,459 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [54375545] [2020-10-27 17:37:44,460 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:37:44,460 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:44,461 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:37:44,463 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:37:44,463 INFO L87 Difference]: Start difference. First operand 4622 states and 6626 transitions. Second operand 8 states. [2020-10-27 17:37:49,850 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:49,851 INFO L93 Difference]: Finished difference Result 14132 states and 22093 transitions. [2020-10-27 17:37:49,852 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 17:37:49,852 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 297 [2020-10-27 17:37:49,853 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:49,923 INFO L225 Difference]: With dead ends: 14132 [2020-10-27 17:37:49,924 INFO L226 Difference]: Without dead ends: 9520 [2020-10-27 17:37:49,949 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 17:37:49,960 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 9520 states. [2020-10-27 17:37:50,263 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 9520 to 8818. [2020-10-27 17:37:50,263 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 8818 states. [2020-10-27 17:37:50,301 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8818 states to 8818 states and 13096 transitions. [2020-10-27 17:37:50,302 INFO L78 Accepts]: Start accepts. Automaton has 8818 states and 13096 transitions. Word has length 297 [2020-10-27 17:37:50,302 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:50,302 INFO L481 AbstractCegarLoop]: Abstraction has 8818 states and 13096 transitions. [2020-10-27 17:37:50,302 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:37:50,303 INFO L276 IsEmpty]: Start isEmpty. Operand 8818 states and 13096 transitions. [2020-10-27 17:37:50,341 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-27 17:37:50,341 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:50,341 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:50,342 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 17:37:50,342 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:50,342 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:50,343 INFO L82 PathProgramCache]: Analyzing trace with hash 787675779, now seen corresponding path program 1 times [2020-10-27 17:37:50,343 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:50,343 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1408823971] [2020-10-27 17:37:50,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:50,451 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:50,478 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:50,546 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:50,651 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:51,015 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:51,229 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:53,013 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:54,689 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:54,689 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-27 17:37:54,689 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4231 [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:54,690 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:54,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:37:54,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:54,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:54,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:54,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:54,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:54,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:54,816 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:37:54,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:54,822 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:54,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:54,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:37:54,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:54,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 17:37:54,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:54,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:37:54,846 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:54,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:54,863 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 17:37:54,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:54,900 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:37:54,950 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 95 [2020-10-27 17:37:54,951 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 17:37:54,951 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:54,980 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 17:37:55,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:55,030 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:55,088 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 78 [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:37:55,089 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:37:55,090 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:37:55,090 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:37:55,214 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 115 proven. 2 refuted. 0 times theorem prover too weak. 235 trivial. 0 not checked. [2020-10-27 17:37:55,214 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1408823971] [2020-10-27 17:37:55,214 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:37:55,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5] total 5 [2020-10-27 17:37:55,215 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1935747596] [2020-10-27 17:37:55,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 17:37:55,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:37:55,216 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 17:37:55,216 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2020-10-27 17:37:55,216 INFO L87 Difference]: Start difference. First operand 8818 states and 13096 transitions. Second operand 5 states. [2020-10-27 17:37:57,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:37:57,794 INFO L93 Difference]: Finished difference Result 19581 states and 29563 transitions. [2020-10-27 17:37:57,796 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-27 17:37:57,796 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 362 [2020-10-27 17:37:57,797 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:37:57,868 INFO L225 Difference]: With dead ends: 19581 [2020-10-27 17:37:57,868 INFO L226 Difference]: Without dead ends: 10773 [2020-10-27 17:37:57,906 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2020-10-27 17:37:57,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10773 states. [2020-10-27 17:37:58,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10773 to 10757. [2020-10-27 17:37:58,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 10757 states. [2020-10-27 17:37:58,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10757 states to 10757 states and 15763 transitions. [2020-10-27 17:37:58,321 INFO L78 Accepts]: Start accepts. Automaton has 10757 states and 15763 transitions. Word has length 362 [2020-10-27 17:37:58,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:37:58,321 INFO L481 AbstractCegarLoop]: Abstraction has 10757 states and 15763 transitions. [2020-10-27 17:37:58,321 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 17:37:58,322 INFO L276 IsEmpty]: Start isEmpty. Operand 10757 states and 15763 transitions. [2020-10-27 17:37:58,368 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 363 [2020-10-27 17:37:58,368 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:37:58,368 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:37:58,369 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 17:37:58,369 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:37:58,369 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:37:58,370 INFO L82 PathProgramCache]: Analyzing trace with hash 1690596357, now seen corresponding path program 1 times [2020-10-27 17:37:58,370 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:37:58,370 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [418841451] [2020-10-27 17:37:58,370 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:37:58,408 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:37:58,436 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:58,512 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:58,665 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:37:58,767 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:00,115 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:02,296 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:03,443 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:03,443 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 378 [2020-10-27 17:38:03,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5028 [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 184 [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 149 [2020-10-27 17:38:03,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:03,583 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:03,585 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:03,587 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:03,639 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:03,639 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:03,639 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:03,639 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 17:38:03,640 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:03,640 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:03,640 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:03,657 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:03,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:03,663 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:03,682 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:03,682 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:03,683 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:03,684 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:03,702 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 80 [2020-10-27 17:38:03,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:03,736 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:03,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 74 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:03,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:38:03,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:03,839 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 182 [2020-10-27 17:38:03,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:03,889 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:04,068 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:04,068 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:38:04,068 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 17:38:04,069 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:04,269 INFO L134 CoverageAnalysis]: Checked inductivity of 352 backedges. 279 proven. 2 refuted. 0 times theorem prover too weak. 71 trivial. 0 not checked. [2020-10-27 17:38:04,269 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [418841451] [2020-10-27 17:38:04,270 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:04,270 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:04,270 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [386498326] [2020-10-27 17:38:04,271 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:04,271 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:04,271 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:04,272 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:04,272 INFO L87 Difference]: Start difference. First operand 10757 states and 15763 transitions. Second operand 7 states. [2020-10-27 17:38:09,367 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:09,367 INFO L93 Difference]: Finished difference Result 31182 states and 48458 transitions. [2020-10-27 17:38:09,368 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:38:09,368 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 362 [2020-10-27 17:38:09,369 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:09,491 INFO L225 Difference]: With dead ends: 31182 [2020-10-27 17:38:09,491 INFO L226 Difference]: Without dead ends: 20435 [2020-10-27 17:38:09,540 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 12 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:09,567 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20435 states. [2020-10-27 17:38:10,142 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20435 to 16529. [2020-10-27 17:38:10,142 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16529 states. [2020-10-27 17:38:10,213 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16529 states to 16529 states and 24458 transitions. [2020-10-27 17:38:10,214 INFO L78 Accepts]: Start accepts. Automaton has 16529 states and 24458 transitions. Word has length 362 [2020-10-27 17:38:10,214 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:10,214 INFO L481 AbstractCegarLoop]: Abstraction has 16529 states and 24458 transitions. [2020-10-27 17:38:10,215 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:10,215 INFO L276 IsEmpty]: Start isEmpty. Operand 16529 states and 24458 transitions. [2020-10-27 17:38:10,372 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 367 [2020-10-27 17:38:10,373 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:10,373 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:38:10,373 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 17:38:10,374 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:10,375 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:10,376 INFO L82 PathProgramCache]: Analyzing trace with hash -2482508, now seen corresponding path program 1 times [2020-10-27 17:38:10,376 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:10,376 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1281827360] [2020-10-27 17:38:10,376 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:10,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:10,540 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:10,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:10,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:11,518 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:11,970 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:12,129 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:15,475 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:15,475 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 382 [2020-10-27 17:38:15,475 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 170 [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 17:38:15,476 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:15,673 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 67 [2020-10-27 17:38:15,674 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:15,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:15,679 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:15,681 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:15,681 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:15,681 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:15,681 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:38:15,682 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:15,682 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:15,682 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:15,700 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:15,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:15,707 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:15,721 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:15,722 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:15,722 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:15,735 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:15,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:15,756 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:15,798 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:15,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 85 [2020-10-27 17:38:15,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:15,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 49 [2020-10-27 17:38:15,799 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:15,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 79 [2020-10-27 17:38:15,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:15,823 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 166 [2020-10-27 17:38:15,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:15,872 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:15,945 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:16,104 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:16,104 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:16,105 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:38:16,106 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:16,277 INFO L134 CoverageAnalysis]: Checked inductivity of 340 backedges. 265 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 17:38:16,278 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1281827360] [2020-10-27 17:38:16,278 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:16,278 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:16,278 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [47202311] [2020-10-27 17:38:16,279 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:16,279 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:16,279 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:16,279 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:16,280 INFO L87 Difference]: Start difference. First operand 16529 states and 24458 transitions. Second operand 7 states. [2020-10-27 17:38:19,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:19,247 INFO L93 Difference]: Finished difference Result 32749 states and 49152 transitions. [2020-10-27 17:38:19,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:38:19,248 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 366 [2020-10-27 17:38:19,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:19,341 INFO L225 Difference]: With dead ends: 32749 [2020-10-27 17:38:19,342 INFO L226 Difference]: Without dead ends: 16198 [2020-10-27 17:38:19,397 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:38:19,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16198 states. [2020-10-27 17:38:19,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16198 to 16140. [2020-10-27 17:38:19,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16140 states. [2020-10-27 17:38:20,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16140 states to 16140 states and 24144 transitions. [2020-10-27 17:38:20,035 INFO L78 Accepts]: Start accepts. Automaton has 16140 states and 24144 transitions. Word has length 366 [2020-10-27 17:38:20,036 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:20,036 INFO L481 AbstractCegarLoop]: Abstraction has 16140 states and 24144 transitions. [2020-10-27 17:38:20,036 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:20,036 INFO L276 IsEmpty]: Start isEmpty. Operand 16140 states and 24144 transitions. [2020-10-27 17:38:20,081 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 374 [2020-10-27 17:38:20,081 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:20,082 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:38:20,082 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 17:38:20,082 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:20,083 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:20,083 INFO L82 PathProgramCache]: Analyzing trace with hash 1977502232, now seen corresponding path program 1 times [2020-10-27 17:38:20,083 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:20,083 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1490978136] [2020-10-27 17:38:20,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:20,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:20,188 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:20,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:20,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:20,420 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:22,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:23,000 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:25,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 389 [2020-10-27 17:38:25,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:38:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5017 [2020-10-27 17:38:25,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 177 [2020-10-27 17:38:25,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 17:38:25,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:25,464 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:25,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:25,468 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,482 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:25,483 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:25,483 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:25,483 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 17:38:25,483 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:25,484 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:25,484 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:25,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:25,508 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:25,509 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,529 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:25,529 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:25,529 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:25,529 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:38:25,530 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:25,530 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:25,530 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:25,551 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:25,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:25,583 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,624 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 92 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 52 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 86 [2020-10-27 17:38:25,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:25,645 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 17:38:25,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:25,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,732 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 295 [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:25,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:25,966 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:38:25,966 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:26,135 INFO L134 CoverageAnalysis]: Checked inductivity of 347 backedges. 272 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 17:38:26,136 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1490978136] [2020-10-27 17:38:26,136 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:26,136 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:26,136 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [409003629] [2020-10-27 17:38:26,137 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:26,137 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:26,137 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:26,138 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:26,138 INFO L87 Difference]: Start difference. First operand 16140 states and 24144 transitions. Second operand 7 states. [2020-10-27 17:38:29,133 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:29,133 INFO L93 Difference]: Finished difference Result 33316 states and 57397 transitions. [2020-10-27 17:38:29,134 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:38:29,134 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 373 [2020-10-27 17:38:29,135 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:29,277 INFO L225 Difference]: With dead ends: 33316 [2020-10-27 17:38:29,277 INFO L226 Difference]: Without dead ends: 17094 [2020-10-27 17:38:29,337 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=37, Invalid=73, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:38:29,352 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17094 states. [2020-10-27 17:38:30,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17094 to 16146. [2020-10-27 17:38:30,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16146 states. [2020-10-27 17:38:30,136 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16146 states to 16146 states and 24117 transitions. [2020-10-27 17:38:30,138 INFO L78 Accepts]: Start accepts. Automaton has 16146 states and 24117 transitions. Word has length 373 [2020-10-27 17:38:30,138 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:30,139 INFO L481 AbstractCegarLoop]: Abstraction has 16146 states and 24117 transitions. [2020-10-27 17:38:30,139 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:30,139 INFO L276 IsEmpty]: Start isEmpty. Operand 16146 states and 24117 transitions. [2020-10-27 17:38:30,208 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 384 [2020-10-27 17:38:30,208 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:30,208 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:38:30,209 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 17:38:30,209 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:30,209 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:30,210 INFO L82 PathProgramCache]: Analyzing trace with hash 915606820, now seen corresponding path program 1 times [2020-10-27 17:38:30,210 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:30,210 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2055544258] [2020-10-27 17:38:30,210 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:30,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:30,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:30,424 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:30,504 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:30,967 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:32,603 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:32,773 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,301 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 399 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 187 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 23 [2020-10-27 17:38:35,302 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:35,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:35,443 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:35,444 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:35,448 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:35,449 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:35,449 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:35,468 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:35,473 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:35,474 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,486 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:35,486 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:35,486 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:35,487 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:35,498 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:35,512 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:35,523 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 102 [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:35,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:35,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 17:38:35,586 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:35,615 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 183 [2020-10-27 17:38:35,642 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:35,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,694 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:35,994 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:35,994 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:38:35,994 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 351 [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:38:35,995 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:36,257 INFO L134 CoverageAnalysis]: Checked inductivity of 357 backedges. 282 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 17:38:36,257 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2055544258] [2020-10-27 17:38:36,257 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:36,257 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:36,258 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979633399] [2020-10-27 17:38:36,258 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:36,258 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:36,259 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:36,259 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:36,259 INFO L87 Difference]: Start difference. First operand 16146 states and 24117 transitions. Second operand 7 states. [2020-10-27 17:38:38,779 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:38,779 INFO L93 Difference]: Finished difference Result 32398 states and 48734 transitions. [2020-10-27 17:38:38,780 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:38:38,780 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 383 [2020-10-27 17:38:38,780 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:38,858 INFO L225 Difference]: With dead ends: 32398 [2020-10-27 17:38:38,858 INFO L226 Difference]: Without dead ends: 16200 [2020-10-27 17:38:38,904 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=31, Invalid=59, Unknown=0, NotChecked=0, Total=90 [2020-10-27 17:38:38,921 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16200 states. [2020-10-27 17:38:39,346 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16200 to 16142. [2020-10-27 17:38:39,346 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 16142 states. [2020-10-27 17:38:39,413 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16142 states to 16142 states and 23937 transitions. [2020-10-27 17:38:39,415 INFO L78 Accepts]: Start accepts. Automaton has 16142 states and 23937 transitions. Word has length 383 [2020-10-27 17:38:39,415 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:39,415 INFO L481 AbstractCegarLoop]: Abstraction has 16142 states and 23937 transitions. [2020-10-27 17:38:39,415 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:39,415 INFO L276 IsEmpty]: Start isEmpty. Operand 16142 states and 23937 transitions. [2020-10-27 17:38:39,490 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 411 [2020-10-27 17:38:39,490 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:39,491 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:38:39,491 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-10-27 17:38:39,491 INFO L429 AbstractCegarLoop]: === Iteration 15 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:39,491 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:39,491 INFO L82 PathProgramCache]: Analyzing trace with hash 2118219886, now seen corresponding path program 1 times [2020-10-27 17:38:39,492 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:39,493 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1386390085] [2020-10-27 17:38:39,493 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:39,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:39,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:39,691 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:40,177 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:40,652 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:41,687 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:44,576 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 426 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5013 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 214 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 17:38:44,577 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:44,710 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:44,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:44,714 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:44,719 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:44,719 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:44,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:44,720 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:44,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:44,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:44,747 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:44,764 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:44,764 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:44,765 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:44,766 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:44,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:38:44,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:44,825 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:44,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 129 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 76 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 123 [2020-10-27 17:38:44,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:44,924 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 210 [2020-10-27 17:38:44,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:44,988 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:45,133 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 165 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:38:45,134 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:45,315 INFO L134 CoverageAnalysis]: Checked inductivity of 384 backedges. 309 proven. 2 refuted. 0 times theorem prover too weak. 73 trivial. 0 not checked. [2020-10-27 17:38:45,315 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1386390085] [2020-10-27 17:38:45,316 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:45,316 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:38:45,316 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [465759978] [2020-10-27 17:38:45,316 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:38:45,317 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:45,317 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:38:45,317 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:38:45,317 INFO L87 Difference]: Start difference. First operand 16142 states and 23937 transitions. Second operand 7 states. [2020-10-27 17:38:49,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:38:49,712 INFO L93 Difference]: Finished difference Result 35360 states and 56661 transitions. [2020-10-27 17:38:49,713 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 17:38:49,713 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 410 [2020-10-27 17:38:49,714 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:38:49,805 INFO L225 Difference]: With dead ends: 35360 [2020-10-27 17:38:49,805 INFO L226 Difference]: Without dead ends: 19228 [2020-10-27 17:38:49,847 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:38:49,867 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19228 states. [2020-10-27 17:38:50,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19228 to 18128. [2020-10-27 17:38:50,387 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 18128 states. [2020-10-27 17:38:50,459 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 18128 states to 18128 states and 25907 transitions. [2020-10-27 17:38:50,460 INFO L78 Accepts]: Start accepts. Automaton has 18128 states and 25907 transitions. Word has length 410 [2020-10-27 17:38:50,461 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:38:50,461 INFO L481 AbstractCegarLoop]: Abstraction has 18128 states and 25907 transitions. [2020-10-27 17:38:50,461 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:38:50,461 INFO L276 IsEmpty]: Start isEmpty. Operand 18128 states and 25907 transitions. [2020-10-27 17:38:50,504 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 412 [2020-10-27 17:38:50,504 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:38:50,505 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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] [2020-10-27 17:38:50,505 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-10-27 17:38:50,505 INFO L429 AbstractCegarLoop]: === Iteration 16 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:38:50,506 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:38:50,506 INFO L82 PathProgramCache]: Analyzing trace with hash 1087855260, now seen corresponding path program 1 times [2020-10-27 17:38:50,506 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:38:50,506 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [123854985] [2020-10-27 17:38:50,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:38:50,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:50,656 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:50,789 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:50,899 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 427 [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5007 [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,603 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 215 [2020-10-27 17:38:55,604 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 17:38:55,604 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,733 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:38:55,736 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,743 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:55,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:55,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,762 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:38:55,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,789 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 17:38:55,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:55,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:38:55,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:38:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:55,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:38:55,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,814 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 17:38:55,833 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,846 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 60 [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:55,895 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:38:55,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 89 [2020-10-27 17:38:55,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:55,925 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 17:38:55,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:38:55,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:38:56,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:38:56,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:38:56,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:38:56,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 202 [2020-10-27 17:38:56,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:38:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:38:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:38:56,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:38:56,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:38:56,332 INFO L134 CoverageAnalysis]: Checked inductivity of 405 backedges. 310 proven. 2 refuted. 0 times theorem prover too weak. 93 trivial. 0 not checked. [2020-10-27 17:38:56,333 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [123854985] [2020-10-27 17:38:56,333 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:38:56,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:38:56,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1464376116] [2020-10-27 17:38:56,334 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:38:56,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:38:56,334 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:38:56,335 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:38:56,335 INFO L87 Difference]: Start difference. First operand 18128 states and 25907 transitions. Second operand 8 states. [2020-10-27 17:39:01,065 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:01,065 INFO L93 Difference]: Finished difference Result 41866 states and 59780 transitions. [2020-10-27 17:39:01,066 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 17:39:01,066 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 411 [2020-10-27 17:39:01,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:01,150 INFO L225 Difference]: With dead ends: 41866 [2020-10-27 17:39:01,151 INFO L226 Difference]: Without dead ends: 23748 [2020-10-27 17:39:01,201 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=58, Invalid=152, Unknown=0, NotChecked=0, Total=210 [2020-10-27 17:39:01,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23748 states. [2020-10-27 17:39:01,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23748 to 23310. [2020-10-27 17:39:01,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 23310 states. [2020-10-27 17:39:01,746 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23310 states to 23310 states and 31660 transitions. [2020-10-27 17:39:01,747 INFO L78 Accepts]: Start accepts. Automaton has 23310 states and 31660 transitions. Word has length 411 [2020-10-27 17:39:01,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:01,748 INFO L481 AbstractCegarLoop]: Abstraction has 23310 states and 31660 transitions. [2020-10-27 17:39:01,748 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:39:01,748 INFO L276 IsEmpty]: Start isEmpty. Operand 23310 states and 31660 transitions. [2020-10-27 17:39:01,789 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 443 [2020-10-27 17:39:01,789 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:01,790 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, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 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, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:01,790 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-10-27 17:39:01,790 INFO L429 AbstractCegarLoop]: === Iteration 17 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:01,790 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:01,791 INFO L82 PathProgramCache]: Analyzing trace with hash 1251798224, now seen corresponding path program 1 times [2020-10-27 17:39:01,791 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:01,791 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [498301347] [2020-10-27 17:39:01,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:01,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:01,911 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:02,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:02,168 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:05,460 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:06,892 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:06,892 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 458 [2020-10-27 17:39:06,892 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:39:06,892 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5033 [2020-10-27 17:39:06,893 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 17:39:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 175 [2020-10-27 17:39:06,893 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 279 [2020-10-27 17:39:06,893 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:07,027 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:07,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:07,031 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:07,034 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:07,035 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:07,052 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:07,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:07,094 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:07,171 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:07,171 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 166 [2020-10-27 17:39:07,171 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:07,171 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 17:39:07,172 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:07,172 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 160 [2020-10-27 17:39:07,172 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:07,207 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 173 [2020-10-27 17:39:07,219 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:07,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:07,283 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:07,283 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:39:07,283 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:07,283 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 17:39:07,284 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:07,284 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:39:07,284 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:07,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 262 [2020-10-27 17:39:07,345 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:07,358 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:07,527 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:07,527 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 181 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 145 [2020-10-27 17:39:07,528 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:07,865 INFO L134 CoverageAnalysis]: Checked inductivity of 430 backedges. 268 proven. 73 refuted. 0 times theorem prover too weak. 89 trivial. 0 not checked. [2020-10-27 17:39:07,865 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [498301347] [2020-10-27 17:39:07,866 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:07,866 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:39:07,866 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1100539115] [2020-10-27 17:39:07,866 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:39:07,867 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:07,867 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:39:07,867 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:39:07,867 INFO L87 Difference]: Start difference. First operand 23310 states and 31660 transitions. Second operand 8 states. [2020-10-27 17:39:13,040 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:13,040 INFO L93 Difference]: Finished difference Result 54192 states and 74203 transitions. [2020-10-27 17:39:13,041 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 17:39:13,041 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 442 [2020-10-27 17:39:13,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:13,156 INFO L225 Difference]: With dead ends: 54192 [2020-10-27 17:39:13,156 INFO L226 Difference]: Without dead ends: 31076 [2020-10-27 17:39:13,204 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-10-27 17:39:13,235 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31076 states. [2020-10-27 17:39:14,036 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31076 to 30621. [2020-10-27 17:39:14,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30621 states. [2020-10-27 17:39:14,134 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30621 states to 30621 states and 41234 transitions. [2020-10-27 17:39:14,136 INFO L78 Accepts]: Start accepts. Automaton has 30621 states and 41234 transitions. Word has length 442 [2020-10-27 17:39:14,137 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:14,137 INFO L481 AbstractCegarLoop]: Abstraction has 30621 states and 41234 transitions. [2020-10-27 17:39:14,137 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:39:14,137 INFO L276 IsEmpty]: Start isEmpty. Operand 30621 states and 41234 transitions. [2020-10-27 17:39:14,193 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 472 [2020-10-27 17:39:14,193 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:14,194 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:14,194 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-10-27 17:39:14,194 INFO L429 AbstractCegarLoop]: === Iteration 18 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:14,195 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:14,195 INFO L82 PathProgramCache]: Analyzing trace with hash 1202834845, now seen corresponding path program 1 times [2020-10-27 17:39:14,195 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:14,195 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1151027260] [2020-10-27 17:39:14,195 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:14,255 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:14,294 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,363 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,598 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,683 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:14,962 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,298 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,298 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 489 [2020-10-27 17:39:19,298 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:39:19,298 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5035 [2020-10-27 17:39:19,299 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-27 17:39:19,299 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 92 [2020-10-27 17:39:19,299 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:19,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:19,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:19,412 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:19,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:19,434 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:19,439 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:19,442 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,457 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,457 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:39:19,457 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:19,457 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 17:39:19,457 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:19,458 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:19,458 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:19,470 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:39:19,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:19,507 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:39:19,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:19,586 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 17:39:19,597 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:19,604 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 90 [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,663 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:19,664 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 90 [2020-10-27 17:39:19,664 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:19,806 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 291 [2020-10-27 17:39:19,831 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:19,845 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:19,877 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 45 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:19,878 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:20,045 INFO L134 CoverageAnalysis]: Checked inductivity of 664 backedges. 314 proven. 88 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 17:39:20,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1151027260] [2020-10-27 17:39:20,045 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:20,045 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:20,045 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741129004] [2020-10-27 17:39:20,046 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:20,046 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:20,046 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:20,046 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:20,047 INFO L87 Difference]: Start difference. First operand 30621 states and 41234 transitions. Second operand 7 states. [2020-10-27 17:39:23,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:23,914 INFO L93 Difference]: Finished difference Result 61718 states and 84298 transitions. [2020-10-27 17:39:23,915 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:39:23,915 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 471 [2020-10-27 17:39:23,920 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:24,002 INFO L225 Difference]: With dead ends: 61718 [2020-10-27 17:39:24,002 INFO L226 Difference]: Without dead ends: 31291 [2020-10-27 17:39:24,051 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=38, Invalid=72, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:39:24,079 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31291 states. [2020-10-27 17:39:24,680 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31291 to 31241. [2020-10-27 17:39:24,680 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31241 states. [2020-10-27 17:39:25,004 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31241 states to 31241 states and 41554 transitions. [2020-10-27 17:39:25,005 INFO L78 Accepts]: Start accepts. Automaton has 31241 states and 41554 transitions. Word has length 471 [2020-10-27 17:39:25,005 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:25,005 INFO L481 AbstractCegarLoop]: Abstraction has 31241 states and 41554 transitions. [2020-10-27 17:39:25,006 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:25,006 INFO L276 IsEmpty]: Start isEmpty. Operand 31241 states and 41554 transitions. [2020-10-27 17:39:25,041 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 478 [2020-10-27 17:39:25,041 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:25,042 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:25,042 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-10-27 17:39:25,042 INFO L429 AbstractCegarLoop]: === Iteration 19 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:25,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:25,043 INFO L82 PathProgramCache]: Analyzing trace with hash -1024220655, now seen corresponding path program 1 times [2020-10-27 17:39:25,043 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:25,043 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1865406240] [2020-10-27 17:39:25,043 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:25,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:25,113 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:25,184 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:25,271 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:26,506 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,127 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,127 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 495 [2020-10-27 17:39:30,127 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:39:30,127 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5037 [2020-10-27 17:39:30,128 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 206 [2020-10-27 17:39:30,128 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:39:30,128 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,246 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:30,248 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,249 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,252 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,252 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:30,252 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,252 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:39:30,252 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:30,253 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:30,253 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,272 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:30,277 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,292 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:30,293 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:39:30,333 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,349 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 71 [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:30,406 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:30,407 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:39:30,407 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,440 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 202 [2020-10-27 17:39:30,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,472 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 96 [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 89 [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,550 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:30,551 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 17:39:30,551 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,598 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 297 [2020-10-27 17:39:30,618 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:30,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:30,667 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:30,667 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:39:30,667 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:30,667 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 48 [2020-10-27 17:39:30,668 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:39:30,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:30,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:30,857 INFO L134 CoverageAnalysis]: Checked inductivity of 676 backedges. 320 proven. 94 refuted. 0 times theorem prover too weak. 262 trivial. 0 not checked. [2020-10-27 17:39:30,857 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1865406240] [2020-10-27 17:39:30,857 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:30,857 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:30,857 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2147085742] [2020-10-27 17:39:30,858 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:30,858 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:30,859 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:30,859 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:30,859 INFO L87 Difference]: Start difference. First operand 31241 states and 41554 transitions. Second operand 7 states. [2020-10-27 17:39:34,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:34,654 INFO L93 Difference]: Finished difference Result 69164 states and 92592 transitions. [2020-10-27 17:39:34,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:39:34,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 477 [2020-10-27 17:39:34,655 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:34,752 INFO L225 Difference]: With dead ends: 69164 [2020-10-27 17:39:34,752 INFO L226 Difference]: Without dead ends: 38117 [2020-10-27 17:39:34,802 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:39:34,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38117 states. [2020-10-27 17:39:35,661 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38117 to 38111. [2020-10-27 17:39:35,661 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38111 states. [2020-10-27 17:39:35,743 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38111 states to 38111 states and 50546 transitions. [2020-10-27 17:39:35,745 INFO L78 Accepts]: Start accepts. Automaton has 38111 states and 50546 transitions. Word has length 477 [2020-10-27 17:39:35,745 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:35,745 INFO L481 AbstractCegarLoop]: Abstraction has 38111 states and 50546 transitions. [2020-10-27 17:39:35,745 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:35,746 INFO L276 IsEmpty]: Start isEmpty. Operand 38111 states and 50546 transitions. [2020-10-27 17:39:35,805 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 519 [2020-10-27 17:39:35,806 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:35,806 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:35,806 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-10-27 17:39:35,807 INFO L429 AbstractCegarLoop]: === Iteration 20 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:35,807 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:35,807 INFO L82 PathProgramCache]: Analyzing trace with hash -489268852, now seen corresponding path program 1 times [2020-10-27 17:39:35,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:35,807 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [194763816] [2020-10-27 17:39:35,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:35,875 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:35,926 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,020 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:36,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:40,543 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:40,870 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:40,924 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:40,924 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 536 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5043 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 324 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 167 [2020-10-27 17:39:40,925 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,066 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:41,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,070 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:41,073 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:41,074 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:41,074 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,091 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:41,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,098 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:41,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 110 [2020-10-27 17:39:41,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:41,119 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,140 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 117 [2020-10-27 17:39:41,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,146 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,170 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:41,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:39:41,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:41,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 17:39:41,171 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:41,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:41,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,188 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 211 [2020-10-27 17:39:41,205 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,215 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,261 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:41,261 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 108 [2020-10-27 17:39:41,261 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:41,261 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 55 [2020-10-27 17:39:41,261 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:41,262 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 102 [2020-10-27 17:39:41,262 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,282 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 318 [2020-10-27 17:39:41,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:41,319 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 165 [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 141 [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:41,446 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:41,447 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:39:41,447 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:41,691 INFO L134 CoverageAnalysis]: Checked inductivity of 749 backedges. 455 proven. 2 refuted. 0 times theorem prover too weak. 292 trivial. 0 not checked. [2020-10-27 17:39:41,692 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [194763816] [2020-10-27 17:39:41,692 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:41,692 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:39:41,692 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923128045] [2020-10-27 17:39:41,693 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:39:41,693 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:41,693 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:39:41,693 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:39:41,693 INFO L87 Difference]: Start difference. First operand 38111 states and 50546 transitions. Second operand 7 states. [2020-10-27 17:39:45,371 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:45,371 INFO L93 Difference]: Finished difference Result 77989 states and 104351 transitions. [2020-10-27 17:39:45,372 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 17:39:45,372 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 518 [2020-10-27 17:39:45,373 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:45,524 INFO L225 Difference]: With dead ends: 77989 [2020-10-27 17:39:45,525 INFO L226 Difference]: Without dead ends: 40072 [2020-10-27 17:39:45,597 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=43, Invalid=89, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:39:45,636 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40072 states. [2020-10-27 17:39:46,350 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40072 to 40020. [2020-10-27 17:39:46,350 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40020 states. [2020-10-27 17:39:46,434 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40020 states to 40020 states and 52687 transitions. [2020-10-27 17:39:46,435 INFO L78 Accepts]: Start accepts. Automaton has 40020 states and 52687 transitions. Word has length 518 [2020-10-27 17:39:46,436 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:46,436 INFO L481 AbstractCegarLoop]: Abstraction has 40020 states and 52687 transitions. [2020-10-27 17:39:46,436 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:39:46,436 INFO L276 IsEmpty]: Start isEmpty. Operand 40020 states and 52687 transitions. [2020-10-27 17:39:46,500 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 567 [2020-10-27 17:39:46,500 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:46,500 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:46,500 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-10-27 17:39:46,500 INFO L429 AbstractCegarLoop]: === Iteration 21 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:46,501 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:46,501 INFO L82 PathProgramCache]: Analyzing trace with hash -87655426, now seen corresponding path program 1 times [2020-10-27 17:39:46,501 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:46,501 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [363094607] [2020-10-27 17:39:46,501 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:46,566 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:46,618 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:46,721 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:46,810 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:47,119 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:47,410 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:47,626 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 586 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5022 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 297 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:39:51,595 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:51,774 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:39:51,777 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:51,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:51,781 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:51,782 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:39:51,782 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:51,782 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:39:51,782 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:51,784 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:51,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:51,786 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 17:39:51,813 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:39:51,819 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:51,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:51,844 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 111 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:51,845 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:51,846 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:51,869 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 118 [2020-10-27 17:39:51,873 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:51,874 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:51,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:51,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:51,886 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:51,899 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 190 [2020-10-27 17:39:51,922 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:51,933 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:52,009 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:52,009 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 103 [2020-10-27 17:39:52,009 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:52,009 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 85 [2020-10-27 17:39:52,009 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:39:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:39:52,010 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 96 [2020-10-27 17:39:52,010 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:52,055 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 292 [2020-10-27 17:39:52,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:52,088 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 92 [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:52,168 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:39:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:39:52,169 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:39:52,169 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:52,245 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 386 [2020-10-27 17:39:52,264 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:52,277 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:52,311 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:39:52,312 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:39:52,539 INFO L134 CoverageAnalysis]: Checked inductivity of 1060 backedges. 453 proven. 93 refuted. 0 times theorem prover too weak. 514 trivial. 0 not checked. [2020-10-27 17:39:52,540 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [363094607] [2020-10-27 17:39:52,540 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:39:52,540 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8] total 8 [2020-10-27 17:39:52,540 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [842180373] [2020-10-27 17:39:52,541 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 17:39:52,541 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:39:52,541 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 17:39:52,541 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-10-27 17:39:52,541 INFO L87 Difference]: Start difference. First operand 40020 states and 52687 transitions. Second operand 8 states. [2020-10-27 17:39:56,591 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:39:56,591 INFO L93 Difference]: Finished difference Result 82502 states and 108585 transitions. [2020-10-27 17:39:56,592 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-27 17:39:56,592 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 566 [2020-10-27 17:39:56,593 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:39:56,729 INFO L225 Difference]: With dead ends: 82502 [2020-10-27 17:39:56,729 INFO L226 Difference]: Without dead ends: 42300 [2020-10-27 17:39:56,822 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-27 17:39:56,863 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42300 states. [2020-10-27 17:39:57,570 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42300 to 42098. [2020-10-27 17:39:57,570 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42098 states. [2020-10-27 17:39:57,699 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42098 states to 42098 states and 54345 transitions. [2020-10-27 17:39:57,700 INFO L78 Accepts]: Start accepts. Automaton has 42098 states and 54345 transitions. Word has length 566 [2020-10-27 17:39:57,701 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:39:57,701 INFO L481 AbstractCegarLoop]: Abstraction has 42098 states and 54345 transitions. [2020-10-27 17:39:57,701 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 17:39:57,701 INFO L276 IsEmpty]: Start isEmpty. Operand 42098 states and 54345 transitions. [2020-10-27 17:39:57,793 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 602 [2020-10-27 17:39:57,793 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:39:57,794 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 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, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 17:39:57,794 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable20 [2020-10-27 17:39:57,794 INFO L429 AbstractCegarLoop]: === Iteration 22 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:39:57,794 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:39:57,795 INFO L82 PathProgramCache]: Analyzing trace with hash 1917267124, now seen corresponding path program 1 times [2020-10-27 17:39:57,795 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:39:57,795 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [711836085] [2020-10-27 17:39:57,795 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:39:57,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:39:58,222 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:39:58,386 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:00,193 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,199 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 619 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3310 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 263 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 165 [2020-10-27 17:40:01,200 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:01,330 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:01,332 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,335 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,335 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:01,336 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,366 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:01,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:01,374 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,435 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,435 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 132 [2020-10-27 17:40:01,435 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:01,435 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 61 [2020-10-27 17:40:01,436 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:01,436 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:01,436 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,475 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 139 [2020-10-27 17:40:01,499 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:01,517 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 121 [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 81 [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:01,582 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 115 [2020-10-27 17:40:01,582 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,611 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 259 [2020-10-27 17:40:01,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:01,653 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,793 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,793 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 163 [2020-10-27 17:40:01,793 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:01,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 157 [2020-10-27 17:40:01,794 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:01,794 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 163 [2020-10-27 17:40:01,794 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:01,874 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 421 [2020-10-27 17:40:01,902 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:01,919 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 64 [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:01,967 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:40:01,968 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:01,968 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:02,213 INFO L134 CoverageAnalysis]: Checked inductivity of 906 backedges. 400 proven. 143 refuted. 0 times theorem prover too weak. 363 trivial. 0 not checked. [2020-10-27 17:40:02,213 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [711836085] [2020-10-27 17:40:02,213 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:02,214 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:02,214 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [287898825] [2020-10-27 17:40:02,215 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:02,215 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:02,215 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:02,215 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:02,215 INFO L87 Difference]: Start difference. First operand 42098 states and 54345 transitions. Second operand 7 states. [2020-10-27 17:40:07,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 17:40:07,308 INFO L93 Difference]: Finished difference Result 82110 states and 106209 transitions. [2020-10-27 17:40:07,310 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 17:40:07,310 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 601 [2020-10-27 17:40:07,311 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 17:40:07,419 INFO L225 Difference]: With dead ends: 82110 [2020-10-27 17:40:07,419 INFO L226 Difference]: Without dead ends: 40206 [2020-10-27 17:40:07,464 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 14 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=40, Invalid=92, Unknown=0, NotChecked=0, Total=132 [2020-10-27 17:40:07,491 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40206 states. [2020-10-27 17:40:08,275 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40206 to 38686. [2020-10-27 17:40:08,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38686 states. [2020-10-27 17:40:08,365 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38686 states to 38686 states and 48688 transitions. [2020-10-27 17:40:08,367 INFO L78 Accepts]: Start accepts. Automaton has 38686 states and 48688 transitions. Word has length 601 [2020-10-27 17:40:08,367 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 17:40:08,367 INFO L481 AbstractCegarLoop]: Abstraction has 38686 states and 48688 transitions. [2020-10-27 17:40:08,367 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 17:40:08,367 INFO L276 IsEmpty]: Start isEmpty. Operand 38686 states and 48688 transitions. [2020-10-27 17:40:08,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 680 [2020-10-27 17:40:08,431 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 17:40:08,431 INFO L422 BasicCegarLoop]: trace histogram [6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 6, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 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, 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] [2020-10-27 17:40:08,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable21 [2020-10-27 17:40:08,432 INFO L429 AbstractCegarLoop]: === Iteration 23 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 17:40:08,432 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 17:40:08,432 INFO L82 PathProgramCache]: Analyzing trace with hash 1416275533, now seen corresponding path program 1 times [2020-10-27 17:40:08,432 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 17:40:08,432 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [199879129] [2020-10-27 17:40:08,433 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 17:40:08,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:08,865 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:09,072 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:09,397 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:11,772 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 699 [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5034 [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:13,817 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 261 [2020-10-27 17:40:13,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 98 [2020-10-27 17:40:13,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,032 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 17:40:14,036 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,043 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,043 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 17:40:14,044 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,044 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 6 [2020-10-27 17:40:14,044 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,044 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:14,045 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,045 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,072 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 8 [2020-10-27 17:40:14,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,118 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,118 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 17:40:14,118 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,119 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 39 [2020-10-27 17:40:14,119 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,119 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:14,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 82 [2020-10-27 17:40:14,200 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,441 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 177 [2020-10-27 17:40:14,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 240 [2020-10-27 17:40:14,442 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 17:40:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 17:40:14,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 170 [2020-10-27 17:40:14,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,510 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 258 [2020-10-27 17:40:14,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,670 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 95 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 139 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 17:40:14,671 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 95 [2020-10-27 17:40:14,672 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,754 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 352 [2020-10-27 17:40:14,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,818 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 148 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 83 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 145 [2020-10-27 17:40:14,878 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,879 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:14,909 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 499 [2020-10-27 17:40:14,929 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 17:40:14,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 17:40:14,976 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 145 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 47 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 142 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 17:40:14,977 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 17:40:15,279 INFO L134 CoverageAnalysis]: Checked inductivity of 1193 backedges. 363 proven. 184 refuted. 0 times theorem prover too weak. 646 trivial. 0 not checked. [2020-10-27 17:40:15,279 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [199879129] [2020-10-27 17:40:15,279 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 17:40:15,279 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-10-27 17:40:15,280 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1215564743] [2020-10-27 17:40:15,280 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 17:40:15,281 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 17:40:15,281 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 17:40:15,281 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2020-10-27 17:40:15,281 INFO L87 Difference]: Start difference. First operand 38686 states and 48688 transitions. Second operand 7 states.