/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/list-simple/sll2n_insert_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 20:07:45,505 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 20:07:45,510 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 20:07:45,570 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 20:07:45,571 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 20:07:45,579 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 20:07:45,581 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 20:07:45,586 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 20:07:45,590 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 20:07:45,597 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 20:07:45,599 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 20:07:45,600 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 20:07:45,601 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 20:07:45,604 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 20:07:45,606 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 20:07:45,608 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 20:07:45,609 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 20:07:45,613 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 20:07:45,621 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 20:07:45,629 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 20:07:45,631 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 20:07:45,633 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 20:07:45,635 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 20:07:45,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 20:07:45,646 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 20:07:45,647 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 20:07:45,647 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 20:07:45,650 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 20:07:45,651 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 20:07:45,652 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 20:07:45,653 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 20:07:45,654 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 20:07:45,657 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 20:07:45,658 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 20:07:45,669 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 20:07:45,674 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 20:07:45,675 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 20:07:45,675 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 20:07:45,676 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 20:07:45,676 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 20:07:45,677 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 20:07:45,678 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 20:07:45,705 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 20:07:45,705 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 20:07:45,709 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 20:07:45,710 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 20:07:45,710 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 20:07:45,711 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 20:07:45,711 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 20:07:45,711 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 20:07:45,711 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 20:07:45,711 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 20:07:45,713 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 20:07:45,713 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 20:07:45,713 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 20:07:45,713 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 20:07:45,714 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 20:07:45,714 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 20:07:45,714 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 20:07:45,714 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 20:07:45,715 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 20:07:45,715 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 20:07:45,715 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 20:07:45,715 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 20:07:45,716 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 20:07:45,716 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 20:07:45,716 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 20:07:45,717 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 20:07:45,717 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 20:07:45,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 20:07:45,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 20:07:45,718 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 20:07:46,122 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 20:07:46,169 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 20:07:46,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 20:07:46,174 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 20:07:46,174 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 20:07:46,175 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-27 20:07:46,250 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd8118322/ebbf8568def34110ae7f3fea44ccaa8d/FLAGdd79212db [2020-10-27 20:07:46,999 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 20:07:47,000 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_insert_unequal.i [2020-10-27 20:07:47,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd8118322/ebbf8568def34110ae7f3fea44ccaa8d/FLAGdd79212db [2020-10-27 20:07:47,235 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/cd8118322/ebbf8568def34110ae7f3fea44ccaa8d [2020-10-27 20:07:47,239 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 20:07:47,249 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 20:07:47,253 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 20:07:47,253 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 20:07:47,257 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 20:07:47,258 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,264 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@17b81d41 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47, skipping insertion in model container [2020-10-27 20:07:47,264 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,273 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 20:07:47,338 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 20:07:47,726 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:07:47,736 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 20:07:47,790 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 20:07:47,853 INFO L208 MainTranslator]: Completed translation [2020-10-27 20:07:47,854 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47 WrapperNode [2020-10-27 20:07:47,854 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 20:07:47,855 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 20:07:47,855 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 20:07:47,855 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 20:07:47,868 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,868 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,908 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,913 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,934 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,940 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,945 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (1/1) ... [2020-10-27 20:07:47,953 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 20:07:47,954 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 20:07:47,954 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 20:07:47,954 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 20:07:47,955 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (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 20:07:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 20:07:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 20:07:48,026 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 20:07:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 20:07:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 20:07:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-27 20:07:48,027 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-27 20:07:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-27 20:07:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-27 20:07:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_insert [2020-10-27 20:07:48,028 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 20:07:48,028 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 20:07:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 20:07:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 20:07:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 20:07:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 20:07:48,029 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 20:07:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 20:07:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 20:07:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 20:07:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 20:07:48,030 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 20:07:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 20:07:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 20:07:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 20:07:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 20:07:48,031 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 20:07:48,032 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 20:07:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 20:07:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 20:07:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 20:07:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 20:07:48,033 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 20:07:48,034 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 20:07:48,035 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 20:07:48,036 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 20:07:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 20:07:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 20:07:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 20:07:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 20:07:48,037 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 20:07:48,038 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 20:07:48,039 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 20:07:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 20:07:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 20:07:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 20:07:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-27 20:07:48,040 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 20:07:48,041 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 20:07:48,042 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 20:07:48,043 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 20:07:48,044 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 20:07:48,045 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 20:07:48,046 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 20:07:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 20:07:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 20:07:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 20:07:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 20:07:48,047 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 20:07:48,048 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure sll_insert [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 20:07:48,049 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 20:07:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 20:07:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 20:07:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 20:07:48,050 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 20:07:48,411 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-27 20:07:48,645 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 20:07:48,645 INFO L298 CfgBuilder]: Removed 5 assume(true) statements. [2020-10-27 20:07:48,649 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:07:48 BoogieIcfgContainer [2020-10-27 20:07:48,649 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 20:07:48,652 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 20:07:48,653 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 20:07:48,657 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 20:07:48,657 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 08:07:47" (1/3) ... [2020-10-27 20:07:48,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77beb17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:07:48, skipping insertion in model container [2020-10-27 20:07:48,658 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 08:07:47" (2/3) ... [2020-10-27 20:07:48,658 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@77beb17a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 08:07:48, skipping insertion in model container [2020-10-27 20:07:48,659 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 08:07:48" (3/3) ... [2020-10-27 20:07:48,660 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_insert_unequal.i [2020-10-27 20:07:48,673 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 20:07:48,679 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 20:07:48,692 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 20:07:48,720 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 20:07:48,720 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 20:07:48,720 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 20:07:48,720 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 20:07:48,720 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 20:07:48,720 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 20:07:48,720 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 20:07:48,721 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 20:07:48,738 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states. [2020-10-27 20:07:48,745 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 20:07:48,745 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:07:48,746 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] [2020-10-27 20:07:48,746 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:07:48,752 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:07:48,753 INFO L82 PathProgramCache]: Analyzing trace with hash -1299191055, now seen corresponding path program 1 times [2020-10-27 20:07:48,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:07:48,762 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1195689258] [2020-10-27 20:07:48,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:07:48,999 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:49,085 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:49,172 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:49,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:49,998 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:49,998 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 20:07:49,998 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:07:49,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 992 [2020-10-27 20:07:50,001 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:50,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 34 [2020-10-27 20:07:50,002 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:50,002 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 20:07:50,098 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:07:50,109 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:50,112 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,119 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:50,119 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:07:50,119 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:50,120 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:50,149 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:07:50,155 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:50,157 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,162 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:50,162 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:50,162 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:50,162 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:07:50,163 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:50,163 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:50,163 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:50,169 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:07:50,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:50,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,189 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,230 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:50,230 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:07:50,230 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:07:50,231 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 53 [2020-10-27 20:07:50,231 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 12 [2020-10-27 20:07:50,231 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:50,232 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:50,238 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:07:50,240 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:50,242 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:50,250 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:50,250 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:50,250 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:07:50,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:50,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:50,251 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:50,251 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:50,261 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 20:07:50,262 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1195689258] [2020-10-27 20:07:50,264 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:07:50,264 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 20:07:50,265 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1930159954] [2020-10-27 20:07:50,270 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 20:07:50,270 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:07:50,283 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 20:07:50,284 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 20:07:50,286 INFO L87 Difference]: Start difference. First operand 58 states. Second operand 4 states. [2020-10-27 20:07:50,505 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:07:50,505 INFO L93 Difference]: Finished difference Result 109 states and 148 transitions. [2020-10-27 20:07:50,506 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-27 20:07:50,507 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 33 [2020-10-27 20:07:50,508 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:07:50,518 INFO L225 Difference]: With dead ends: 109 [2020-10-27 20:07:50,518 INFO L226 Difference]: Without dead ends: 47 [2020-10-27 20:07:50,522 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:07:50,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2020-10-27 20:07:50,565 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 42. [2020-10-27 20:07:50,567 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2020-10-27 20:07:50,568 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 50 transitions. [2020-10-27 20:07:50,570 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 50 transitions. Word has length 33 [2020-10-27 20:07:50,570 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:07:50,571 INFO L481 AbstractCegarLoop]: Abstraction has 42 states and 50 transitions. [2020-10-27 20:07:50,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 20:07:50,571 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 50 transitions. [2020-10-27 20:07:50,573 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 20:07:50,573 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:07:50,573 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] [2020-10-27 20:07:50,574 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 20:07:50,574 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:07:50,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:07:50,575 INFO L82 PathProgramCache]: Analyzing trace with hash 1593647085, now seen corresponding path program 1 times [2020-10-27 20:07:50,575 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:07:50,575 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1700856215] [2020-10-27 20:07:50,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:07:50,600 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:50,611 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,660 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:50,682 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:51,809 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:51,809 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 20:07:51,809 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:07:51,810 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1207 [2020-10-27 20:07:51,810 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:07:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 33 [2020-10-27 20:07:51,810 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:07:51,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:51,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:07:51,858 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:51,862 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:51,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:51,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:07:51,867 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:51,867 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:07:51,867 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:51,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:51,868 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:51,868 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:07:51,886 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:07:51,890 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:51,894 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:51,898 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:51,898 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:51,899 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:51,899 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-27 20:07:51,914 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:51,914 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:51,915 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:51,919 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:07:51,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:51,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:51,955 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:51,955 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:07:51,955 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 3 [2020-10-27 20:07:51,956 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:51,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:07:51,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:51,978 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:51,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:51,986 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:51,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:51,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:07:51,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:51,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:51,992 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:51,992 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 4 [2020-10-27 20:07:51,999 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 20:07:51,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1700856215] [2020-10-27 20:07:51,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:07:52,000 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-27 20:07:52,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [292030863] [2020-10-27 20:07:52,003 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-27 20:07:52,004 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:07:52,005 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-27 20:07:52,006 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-27 20:07:52,006 INFO L87 Difference]: Start difference. First operand 42 states and 50 transitions. Second operand 5 states. [2020-10-27 20:07:52,192 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:07:52,193 INFO L93 Difference]: Finished difference Result 67 states and 83 transitions. [2020-10-27 20:07:52,193 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 20:07:52,193 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 33 [2020-10-27 20:07:52,194 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:07:52,195 INFO L225 Difference]: With dead ends: 67 [2020-10-27 20:07:52,195 INFO L226 Difference]: Without dead ends: 52 [2020-10-27 20:07:52,196 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-27 20:07:52,197 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-10-27 20:07:52,206 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 44. [2020-10-27 20:07:52,206 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2020-10-27 20:07:52,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 53 transitions. [2020-10-27 20:07:52,208 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 53 transitions. Word has length 33 [2020-10-27 20:07:52,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:07:52,208 INFO L481 AbstractCegarLoop]: Abstraction has 44 states and 53 transitions. [2020-10-27 20:07:52,209 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-27 20:07:52,209 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 53 transitions. [2020-10-27 20:07:52,210 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-10-27 20:07:52,210 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:07:52,210 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] [2020-10-27 20:07:52,211 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 20:07:52,211 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:07:52,211 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:07:52,211 INFO L82 PathProgramCache]: Analyzing trace with hash 1200620075, now seen corresponding path program 1 times [2020-10-27 20:07:52,212 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:07:52,212 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1547619881] [2020-10-27 20:07:52,212 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:07:52,230 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:52,238 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:52,256 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:52,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:52,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 47 [2020-10-27 20:07:52,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:07:52,836 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 604 [2020-10-27 20:07:52,836 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:07:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:07:52,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:07:52,837 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:52,892 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:07:52,896 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:52,897 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:52,901 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:52,901 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:07:52,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:52,903 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:07:52,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:52,903 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:52,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:52,932 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:07:52,939 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:52,942 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:52,957 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:52,958 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:52,961 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:52,964 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:07:52,964 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:07:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:07:52,965 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:07:52,965 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:52,995 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-27 20:07:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:53,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:53,035 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:53,035 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:07:53,036 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:53,036 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 20:07:53,036 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:53,036 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 17 [2020-10-27 20:07:53,037 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:53,037 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:53,043 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:07:53,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:53,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:53,058 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:53,058 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:53,058 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:53,058 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:07:53,058 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:53,059 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:53,059 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:53,066 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 20:07:53,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1547619881] [2020-10-27 20:07:53,067 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 20:07:53,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-27 20:07:53,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [195504366] [2020-10-27 20:07:53,068 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-27 20:07:53,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:07:53,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-27 20:07:53,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-27 20:07:53,071 INFO L87 Difference]: Start difference. First operand 44 states and 53 transitions. Second operand 7 states. [2020-10-27 20:07:53,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:07:53,403 INFO L93 Difference]: Finished difference Result 80 states and 98 transitions. [2020-10-27 20:07:53,404 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-27 20:07:53,404 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 33 [2020-10-27 20:07:53,404 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:07:53,405 INFO L225 Difference]: With dead ends: 80 [2020-10-27 20:07:53,405 INFO L226 Difference]: Without dead ends: 48 [2020-10-27 20:07:53,408 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:07:53,408 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2020-10-27 20:07:53,417 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 45. [2020-10-27 20:07:53,420 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2020-10-27 20:07:53,421 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 54 transitions. [2020-10-27 20:07:53,421 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 54 transitions. Word has length 33 [2020-10-27 20:07:53,422 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:07:53,425 INFO L481 AbstractCegarLoop]: Abstraction has 45 states and 54 transitions. [2020-10-27 20:07:53,425 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-27 20:07:53,425 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 54 transitions. [2020-10-27 20:07:53,426 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 20:07:53,426 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:07:53,427 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:07:53,428 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 20:07:53,428 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:07:53,429 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:07:53,429 INFO L82 PathProgramCache]: Analyzing trace with hash 883170427, now seen corresponding path program 1 times [2020-10-27 20:07:53,429 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:07:53,429 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1568357466] [2020-10-27 20:07:53,430 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:07:53,456 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:53,464 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:53,516 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:53,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:53,995 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:55,600 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:55,600 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-27 20:07:55,601 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 4 [2020-10-27 20:07:55,601 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2143 [2020-10-27 20:07:55,601 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:07:55,601 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:07:55,602 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-27 20:07:55,602 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:55,765 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 16 [2020-10-27 20:07:55,804 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:07:55,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:55,807 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:55,810 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:55,810 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:07:55,810 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:55,811 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:55,834 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:07:55,841 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:55,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:55,905 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:55,906 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:07:55,906 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:55,906 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 20:07:55,906 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:07:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:55,907 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:07:55,907 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:55,982 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:07:55,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:55,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:55,999 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:55,999 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:56,000 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:56,000 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 20:07:56,000 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:07:56,000 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:56,001 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:07:56,001 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:56,005 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 20:07:56,014 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:56,019 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:56,040 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:56,041 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:07:56,041 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:56,041 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 20:07:56,041 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:07:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:56,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:07:56,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:56,047 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:07:56,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:56,051 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:56,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:07:56,056 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:07:56,056 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:07:56,056 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:07:56,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:07:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:07:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:07:56,057 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:07:56,057 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:07:56,065 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:07:56,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1568357466] [2020-10-27 20:07:56,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:07:56,066 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:07:56,066 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2042133502] [2020-10-27 20:07:56,067 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:07:56,067 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:07:56,067 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:07:56,068 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:07:56,068 INFO L87 Difference]: Start difference. First operand 45 states and 54 transitions. Second operand 11 states. [2020-10-27 20:07:56,516 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:07:56,516 INFO L93 Difference]: Finished difference Result 77 states and 98 transitions. [2020-10-27 20:07:56,541 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-27 20:07:56,541 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-27 20:07:56,542 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:07:56,543 INFO L225 Difference]: With dead ends: 77 [2020-10-27 20:07:56,543 INFO L226 Difference]: Without dead ends: 66 [2020-10-27 20:07:56,543 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=52, Invalid=220, Unknown=0, NotChecked=0, Total=272 [2020-10-27 20:07:56,544 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2020-10-27 20:07:56,553 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 56. [2020-10-27 20:07:56,553 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 20:07:56,555 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 68 transitions. [2020-10-27 20:07:56,555 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 68 transitions. Word has length 42 [2020-10-27 20:07:56,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:07:56,555 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 68 transitions. [2020-10-27 20:07:56,556 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:07:56,556 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 68 transitions. [2020-10-27 20:07:56,557 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-27 20:07:56,557 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:07:56,557 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-27 20:07:56,558 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 20:07:56,558 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:07:56,558 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:07:56,558 INFO L82 PathProgramCache]: Analyzing trace with hash 1554879660, now seen corresponding path program 1 times [2020-10-27 20:07:56,559 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:07:56,559 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1696944055] [2020-10-27 20:07:56,559 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:07:56,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:07:56,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:56,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:56,686 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:56,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:58,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:07:59,254 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:01,582 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:01,582 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 20:08:01,582 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5006 [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-27 20:08:01,583 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:01,828 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:01,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:01,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:01,835 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:01,835 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:01,835 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:01,835 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:08:01,835 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:01,836 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:01,836 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:01,860 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:01,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:01,873 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:01,928 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:02,156 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:02,156 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:02,157 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:02,157 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 288 [2020-10-27 20:08:02,157 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:08:02,157 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:08:02,158 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:08:02,158 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:02,256 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:02,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:02,263 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:02,274 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:02,274 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:02,274 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:02,275 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 20:08:02,275 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:02,275 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:02,276 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:02,280 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 20:08:02,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:02,295 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:02,370 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:02,545 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:08:02,545 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:02,545 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 256 [2020-10-27 20:08:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:08:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:02,546 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:08:02,547 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 20:08:02,716 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:02,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:02,723 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:02,743 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:02,743 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:02,743 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:02,744 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:02,834 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-27 20:08:02,834 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1696944055] [2020-10-27 20:08:02,834 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:02,835 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-27 20:08:02,835 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [82949608] [2020-10-27 20:08:02,835 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 20:08:02,836 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:02,836 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 20:08:02,837 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=338, Unknown=0, NotChecked=0, Total=380 [2020-10-27 20:08:02,837 INFO L87 Difference]: Start difference. First operand 56 states and 68 transitions. Second operand 20 states. [2020-10-27 20:08:03,882 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:03,883 INFO L93 Difference]: Finished difference Result 86 states and 103 transitions. [2020-10-27 20:08:03,885 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:08:03,885 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 43 [2020-10-27 20:08:03,886 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:03,887 INFO L225 Difference]: With dead ends: 86 [2020-10-27 20:08:03,887 INFO L226 Difference]: Without dead ends: 55 [2020-10-27 20:08:03,888 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 91 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=92, Invalid=720, Unknown=0, NotChecked=0, Total=812 [2020-10-27 20:08:03,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2020-10-27 20:08:03,897 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 49. [2020-10-27 20:08:03,900 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:08:03,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 59 transitions. [2020-10-27 20:08:03,901 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 59 transitions. Word has length 43 [2020-10-27 20:08:03,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:03,902 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 59 transitions. [2020-10-27 20:08:03,902 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 20:08:03,902 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 59 transitions. [2020-10-27 20:08:03,907 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 20:08:03,907 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:03,908 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:03,908 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 20:08:03,908 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:03,909 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:03,909 INFO L82 PathProgramCache]: Analyzing trace with hash -1971282901, now seen corresponding path program 2 times [2020-10-27 20:08:03,909 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:03,909 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [394248551] [2020-10-27 20:08:03,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:03,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:03,949 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:03,991 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:04,211 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 69 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1101 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 50 [2020-10-27 20:08:05,039 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:05,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,188 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:05,189 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,210 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:05,218 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,224 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,357 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,357 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:05,357 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:05,357 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-27 20:08:05,357 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,358 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:08:05,358 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,407 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:05,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,413 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,422 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,422 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:05,422 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:05,423 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,426 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:05,429 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,431 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,439 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,440 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:05,440 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,444 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:05,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 46 [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:05,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 20:08:05,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,534 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:05,539 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:05,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:05,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:05,551 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:05,551 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:05,551 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:08:05,551 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:05,552 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:05,552 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:05,563 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 1 proven. 5 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 20:08:05,563 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [394248551] [2020-10-27 20:08:05,564 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:05,564 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:08:05,564 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [527621524] [2020-10-27 20:08:05,564 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:08:05,565 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:05,565 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:08:05,566 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=129, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:08:05,566 INFO L87 Difference]: Start difference. First operand 49 states and 59 transitions. Second operand 13 states. [2020-10-27 20:08:06,071 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:06,072 INFO L93 Difference]: Finished difference Result 72 states and 90 transitions. [2020-10-27 20:08:06,073 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-10-27 20:08:06,073 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 51 [2020-10-27 20:08:06,073 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:06,074 INFO L225 Difference]: With dead ends: 72 [2020-10-27 20:08:06,074 INFO L226 Difference]: Without dead ends: 61 [2020-10-27 20:08:06,075 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 57 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=70, Invalid=350, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:08:06,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-27 20:08:06,085 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 54. [2020-10-27 20:08:06,085 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 54 states. [2020-10-27 20:08:06,086 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 64 transitions. [2020-10-27 20:08:06,086 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 64 transitions. Word has length 51 [2020-10-27 20:08:06,086 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:06,086 INFO L481 AbstractCegarLoop]: Abstraction has 54 states and 64 transitions. [2020-10-27 20:08:06,086 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:08:06,087 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 64 transitions. [2020-10-27 20:08:06,088 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:08:06,088 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:06,088 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:06,088 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 20:08:06,088 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:06,089 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:06,089 INFO L82 PathProgramCache]: Analyzing trace with hash -576632389, now seen corresponding path program 1 times [2020-10-27 20:08:06,089 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:06,089 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1535451192] [2020-10-27 20:08:06,089 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:06,116 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:06,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:07,368 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:07,368 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1251 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 54 [2020-10-27 20:08:07,369 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:07,493 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:07,494 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:07,496 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:07,499 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:07,499 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:07,499 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:07,499 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:07,499 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:07,500 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:07,500 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:07,523 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:07,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:07,541 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:07,718 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:07,718 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 183 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:08:07,719 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:07,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:07,830 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:07,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:07,840 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:07,840 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:07,840 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:07,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:07,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:07,841 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:07,841 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:07,844 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:07,848 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:07,851 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:07,875 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 27 [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:08:07,876 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:07,877 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:08:07,877 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:07,950 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:07,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:07,965 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:08,160 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:08,160 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:08,160 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:08,160 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 201 [2020-10-27 20:08:08,160 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 20:08:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:08,161 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:08:08,161 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:08,432 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 50 [2020-10-27 20:08:08,646 WARN L193 SmtUtils]: Spent 132.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 57 [2020-10-27 20:08:08,828 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 60 [2020-10-27 20:08:09,015 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:09,023 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:09,029 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:09,082 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:09,082 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 58 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:08:09,083 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:09,528 WARN L193 SmtUtils]: Spent 153.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 40 [2020-10-27 20:08:09,570 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 9 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:08:09,571 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1535451192] [2020-10-27 20:08:09,571 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:09,571 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [24] total 24 [2020-10-27 20:08:09,571 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [653671004] [2020-10-27 20:08:09,573 INFO L461 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-10-27 20:08:09,575 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:09,575 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-10-27 20:08:09,576 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=58, Invalid=494, Unknown=0, NotChecked=0, Total=552 [2020-10-27 20:08:09,576 INFO L87 Difference]: Start difference. First operand 54 states and 64 transitions. Second operand 24 states. [2020-10-27 20:08:11,809 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:11,809 INFO L93 Difference]: Finished difference Result 77 states and 96 transitions. [2020-10-27 20:08:11,809 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 20:08:11,809 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 52 [2020-10-27 20:08:11,810 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:11,811 INFO L225 Difference]: With dead ends: 77 [2020-10-27 20:08:11,811 INFO L226 Difference]: Without dead ends: 73 [2020-10-27 20:08:11,816 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 162 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=131, Invalid=1201, Unknown=0, NotChecked=0, Total=1332 [2020-10-27 20:08:11,816 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2020-10-27 20:08:11,838 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 62. [2020-10-27 20:08:11,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 20:08:11,843 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 75 transitions. [2020-10-27 20:08:11,843 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 75 transitions. Word has length 52 [2020-10-27 20:08:11,843 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:11,843 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 75 transitions. [2020-10-27 20:08:11,843 INFO L482 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-10-27 20:08:11,844 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 75 transitions. [2020-10-27 20:08:11,848 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:08:11,848 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:11,848 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:11,848 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 20:08:11,848 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:11,849 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:11,849 INFO L82 PathProgramCache]: Analyzing trace with hash -969659399, now seen corresponding path program 1 times [2020-10-27 20:08:11,849 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:11,849 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [85632937] [2020-10-27 20:08:11,850 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:11,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:11,898 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,208 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 805 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 19 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:08:12,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 48 [2020-10-27 20:08:12,693 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:12,772 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:12,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:12,776 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:12,779 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:12,780 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:12,780 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:12,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:12,808 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:12,813 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,911 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:12,911 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:12,911 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:12,911 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 102 [2020-10-27 20:08:12,911 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:08:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:12,912 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:08:12,912 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:12,965 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:12,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:12,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,972 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:12,972 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:12,972 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:12,973 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:12,976 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:12,980 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:12,983 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:12,997 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:12,997 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:12,997 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:08:12,998 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:13,028 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:13,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:13,038 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:13,132 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:13,132 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 97 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:08:13,133 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:13,273 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:13,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:13,279 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:13,302 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:13,302 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:13,302 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:08:13,303 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:13,391 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 12 proven. 5 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:08:13,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [85632937] [2020-10-27 20:08:13,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:13,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [19] total 19 [2020-10-27 20:08:13,392 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1158174608] [2020-10-27 20:08:13,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 20:08:13,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:13,397 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 20:08:13,397 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:08:13,397 INFO L87 Difference]: Start difference. First operand 62 states and 75 transitions. Second operand 19 states. [2020-10-27 20:08:14,568 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:14,568 INFO L93 Difference]: Finished difference Result 77 states and 94 transitions. [2020-10-27 20:08:14,569 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-10-27 20:08:14,569 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 52 [2020-10-27 20:08:14,569 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:14,571 INFO L225 Difference]: With dead ends: 77 [2020-10-27 20:08:14,571 INFO L226 Difference]: Without dead ends: 62 [2020-10-27 20:08:14,573 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 117 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=97, Invalid=773, Unknown=0, NotChecked=0, Total=870 [2020-10-27 20:08:14,573 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-27 20:08:14,583 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 62. [2020-10-27 20:08:14,584 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 62 states. [2020-10-27 20:08:14,584 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 74 transitions. [2020-10-27 20:08:14,585 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 74 transitions. Word has length 52 [2020-10-27 20:08:14,585 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:14,585 INFO L481 AbstractCegarLoop]: Abstraction has 62 states and 74 transitions. [2020-10-27 20:08:14,585 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 20:08:14,585 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 74 transitions. [2020-10-27 20:08:14,586 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-10-27 20:08:14,587 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:14,587 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:14,587 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 20:08:14,587 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:14,587 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:14,588 INFO L82 PathProgramCache]: Analyzing trace with hash -1033827588, now seen corresponding path program 2 times [2020-10-27 20:08:14,588 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:14,590 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [349313319] [2020-10-27 20:08:14,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:14,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:14,623 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:14,648 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:14,760 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:14,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:15,282 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:18,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,614 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 70 [2020-10-27 20:08:19,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 6 [2020-10-27 20:08:19,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:08:19,615 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:08:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:08:19,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 44 [2020-10-27 20:08:19,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,686 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:19,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,688 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,691 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,691 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:19,692 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,713 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:19,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,726 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,784 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,784 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:19,784 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,784 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 20:08:19,784 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:19,785 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:08:19,785 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,826 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:19,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,832 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,839 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,839 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:19,839 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:19,840 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:19,845 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,847 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:19,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:19,855 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:19,864 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,895 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,895 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 20 [2020-10-27 20:08:19,895 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 29 [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-27 20:08:19,896 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,929 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:19,932 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:19,934 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:19,943 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:19,943 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:19,943 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:19,944 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:19,952 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 6 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 20:08:19,952 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [349313319] [2020-10-27 20:08:19,954 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:19,955 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-27 20:08:19,955 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1498683119] [2020-10-27 20:08:19,955 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-27 20:08:19,956 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:19,957 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-27 20:08:19,957 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=91, Unknown=0, NotChecked=0, Total=110 [2020-10-27 20:08:19,957 INFO L87 Difference]: Start difference. First operand 62 states and 74 transitions. Second operand 11 states. [2020-10-27 20:08:20,428 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:20,428 INFO L93 Difference]: Finished difference Result 74 states and 89 transitions. [2020-10-27 20:08:20,429 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-10-27 20:08:20,429 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 52 [2020-10-27 20:08:20,429 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:20,431 INFO L225 Difference]: With dead ends: 74 [2020-10-27 20:08:20,431 INFO L226 Difference]: Without dead ends: 59 [2020-10-27 20:08:20,432 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 24 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=60, Invalid=282, Unknown=0, NotChecked=0, Total=342 [2020-10-27 20:08:20,432 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2020-10-27 20:08:20,442 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 56. [2020-10-27 20:08:20,442 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 56 states. [2020-10-27 20:08:20,443 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 67 transitions. [2020-10-27 20:08:20,443 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 67 transitions. Word has length 52 [2020-10-27 20:08:20,443 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:20,443 INFO L481 AbstractCegarLoop]: Abstraction has 56 states and 67 transitions. [2020-10-27 20:08:20,443 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-27 20:08:20,443 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 67 transitions. [2020-10-27 20:08:20,444 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 20:08:20,445 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:20,445 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:20,445 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 20:08:20,445 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:20,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:20,446 INFO L82 PathProgramCache]: Analyzing trace with hash 408925101, now seen corresponding path program 2 times [2020-10-27 20:08:20,446 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:20,446 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [746719142] [2020-10-27 20:08:20,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:20,464 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:20,476 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:20,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,164 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,164 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 20:08:21,164 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:21,164 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 698 [2020-10-27 20:08:21,165 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:08:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-27 20:08:21,165 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 45 [2020-10-27 20:08:21,165 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,244 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:21,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,247 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,249 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,249 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:21,249 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,249 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:08:21,250 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:21,250 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:21,250 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,269 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:21,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,281 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,349 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 72 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:08:21,350 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,401 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:21,404 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,406 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,414 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,414 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:21,414 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:21,415 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:21,415 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:21,415 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,423 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:21,426 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,428 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,436 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,436 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:21,436 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,436 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:21,437 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:21,437 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:21,437 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,441 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:21,448 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,454 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,511 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,511 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 22 [2020-10-27 20:08:21,511 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,511 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 62 [2020-10-27 20:08:21,511 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 20:08:21,512 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:08:21,512 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,564 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:21,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:21,570 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:21,578 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:21,578 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 9 [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:21,579 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:21,580 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:21,588 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 8 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2020-10-27 20:08:21,589 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [746719142] [2020-10-27 20:08:21,589 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:21,589 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [13] total 13 [2020-10-27 20:08:21,589 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [143919463] [2020-10-27 20:08:21,591 INFO L461 AbstractCegarLoop]: Interpolant automaton has 13 states [2020-10-27 20:08:21,591 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:21,592 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2020-10-27 20:08:21,592 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=130, Unknown=0, NotChecked=0, Total=156 [2020-10-27 20:08:21,592 INFO L87 Difference]: Start difference. First operand 56 states and 67 transitions. Second operand 13 states. [2020-10-27 20:08:22,132 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:22,132 INFO L93 Difference]: Finished difference Result 74 states and 91 transitions. [2020-10-27 20:08:22,132 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-10-27 20:08:22,132 INFO L78 Accepts]: Start accepts. Automaton has 13 states. Word has length 53 [2020-10-27 20:08:22,133 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:22,134 INFO L225 Difference]: With dead ends: 74 [2020-10-27 20:08:22,134 INFO L226 Difference]: Without dead ends: 57 [2020-10-27 20:08:22,135 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 44 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=78, Invalid=384, Unknown=0, NotChecked=0, Total=462 [2020-10-27 20:08:22,136 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-27 20:08:22,155 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 50. [2020-10-27 20:08:22,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 20:08:22,156 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 58 transitions. [2020-10-27 20:08:22,161 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 58 transitions. Word has length 53 [2020-10-27 20:08:22,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:22,162 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 58 transitions. [2020-10-27 20:08:22,162 INFO L482 AbstractCegarLoop]: Interpolant automaton has 13 states. [2020-10-27 20:08:22,162 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 58 transitions. [2020-10-27 20:08:22,163 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-10-27 20:08:22,163 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:22,163 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:22,163 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 20:08:22,163 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:22,164 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:22,167 INFO L82 PathProgramCache]: Analyzing trace with hash -749334676, now seen corresponding path program 1 times [2020-10-27 20:08:22,167 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:22,168 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [755405745] [2020-10-27 20:08:22,168 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:22,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:22,214 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:22,317 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:22,631 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:23,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:25,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:25,276 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:26,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:26,989 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,203 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 8 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5004 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 20 [2020-10-27 20:08:27,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,270 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:27,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:27,273 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:27,276 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:27,277 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:27,277 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,300 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:27,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:27,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,320 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:27,321 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:27,321 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,327 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:27,329 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:27,330 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,333 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,333 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:27,334 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:27,335 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,337 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:27,338 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:27,339 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:27,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:27,343 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:08:27,343 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:27,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:27,344 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,350 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:27,358 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:27,365 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,430 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:27,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 184 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:08:27,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:27,741 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 52 DAG size of output: 34 [2020-10-27 20:08:28,123 WARN L193 SmtUtils]: Spent 351.00 ms on a formula simplification. DAG size of input: 63 DAG size of output: 50 [2020-10-27 20:08:28,589 WARN L193 SmtUtils]: Spent 430.00 ms on a formula simplification. DAG size of input: 81 DAG size of output: 78 [2020-10-27 20:08:28,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:28,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:28,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:28,769 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:28,789 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 34 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:28,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:28,890 INFO L134 CoverageAnalysis]: Checked inductivity of 22 backedges. 8 proven. 1 refuted. 0 times theorem prover too weak. 13 trivial. 0 not checked. [2020-10-27 20:08:28,890 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [755405745] [2020-10-27 20:08:28,890 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:28,890 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14] total 14 [2020-10-27 20:08:28,891 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729186810] [2020-10-27 20:08:28,891 INFO L461 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-10-27 20:08:28,891 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:28,892 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-10-27 20:08:28,892 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-10-27 20:08:28,892 INFO L87 Difference]: Start difference. First operand 50 states and 58 transitions. Second operand 14 states. [2020-10-27 20:08:29,636 WARN L193 SmtUtils]: Spent 200.00 ms on a formula simplification that was a NOOP. DAG size: 83 [2020-10-27 20:08:30,311 WARN L193 SmtUtils]: Spent 619.00 ms on a formula simplification. DAG size of input: 104 DAG size of output: 92 [2020-10-27 20:08:30,536 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:30,537 INFO L93 Difference]: Finished difference Result 60 states and 70 transitions. [2020-10-27 20:08:30,537 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-10-27 20:08:30,537 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-10-27 20:08:30,538 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:30,538 INFO L225 Difference]: With dead ends: 60 [2020-10-27 20:08:30,538 INFO L226 Difference]: Without dead ends: 51 [2020-10-27 20:08:30,539 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 2.4s TimeCoverageRelationStatistics Valid=60, Invalid=360, Unknown=0, NotChecked=0, Total=420 [2020-10-27 20:08:30,540 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-27 20:08:30,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 50. [2020-10-27 20:08:30,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 50 states. [2020-10-27 20:08:30,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 57 transitions. [2020-10-27 20:08:30,549 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 57 transitions. Word has length 53 [2020-10-27 20:08:30,549 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:30,549 INFO L481 AbstractCegarLoop]: Abstraction has 50 states and 57 transitions. [2020-10-27 20:08:30,550 INFO L482 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-10-27 20:08:30,550 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 57 transitions. [2020-10-27 20:08:30,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 20:08:30,551 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:30,551 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 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] [2020-10-27 20:08:30,551 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 20:08:30,551 INFO L429 AbstractCegarLoop]: === Iteration 12 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:30,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:30,552 INFO L82 PathProgramCache]: Analyzing trace with hash -107280714, now seen corresponding path program 1 times [2020-10-27 20:08:30,552 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:30,552 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [375224138] [2020-10-27 20:08:30,552 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:30,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:30,593 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:30,642 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:30,834 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:31,407 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:31,698 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,711 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 72 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 5 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2136 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 44 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 22 [2020-10-27 20:08:32,712 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,793 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:32,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,795 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:32,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,819 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:32,823 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,827 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,841 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:32,842 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,848 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:32,849 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,850 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:32,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,856 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:32,856 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,858 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:32,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,861 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,866 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,867 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:32,867 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,870 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:32,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,882 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,919 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 41 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-27 20:08:32,920 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,973 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:32,977 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:32,979 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:32,988 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:32,989 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:32,989 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:32,989 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 11 [2020-10-27 20:08:32,990 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 20:08:32,990 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:32,991 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-27 20:08:32,991 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:32,999 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 1 proven. 2 refuted. 0 times theorem prover too weak. 21 trivial. 0 not checked. [2020-10-27 20:08:32,999 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [375224138] [2020-10-27 20:08:32,999 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:32,999 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-10-27 20:08:33,000 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1330484563] [2020-10-27 20:08:33,002 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-27 20:08:33,003 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:33,003 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-27 20:08:33,003 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-27 20:08:33,003 INFO L87 Difference]: Start difference. First operand 50 states and 57 transitions. Second operand 10 states. [2020-10-27 20:08:33,330 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:33,330 INFO L93 Difference]: Finished difference Result 61 states and 71 transitions. [2020-10-27 20:08:33,331 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-27 20:08:33,331 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 54 [2020-10-27 20:08:33,331 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:33,332 INFO L225 Difference]: With dead ends: 61 [2020-10-27 20:08:33,332 INFO L226 Difference]: Without dead ends: 50 [2020-10-27 20:08:33,333 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=171, Unknown=0, NotChecked=0, Total=210 [2020-10-27 20:08:33,333 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 50 states. [2020-10-27 20:08:33,340 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 50 to 49. [2020-10-27 20:08:33,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:08:33,344 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 54 transitions. [2020-10-27 20:08:33,344 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 54 transitions. Word has length 54 [2020-10-27 20:08:33,344 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:33,344 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 54 transitions. [2020-10-27 20:08:33,344 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-27 20:08:33,344 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 54 transitions. [2020-10-27 20:08:33,346 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2020-10-27 20:08:33,346 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:33,346 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:33,346 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-10-27 20:08:33,347 INFO L429 AbstractCegarLoop]: === Iteration 13 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:33,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:33,347 INFO L82 PathProgramCache]: Analyzing trace with hash 915665361, now seen corresponding path program 1 times [2020-10-27 20:08:33,347 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:33,347 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1464282736] [2020-10-27 20:08:33,347 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:33,371 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:33,384 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:34,374 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:34,374 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 73 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1002 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 27 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 57 [2020-10-27 20:08:34,375 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:34,533 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:34,535 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:34,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:34,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:34,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:34,537 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:34,538 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:34,569 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:34,577 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:34,582 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 63 [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:34,642 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:08:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:34,643 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 29 [2020-10-27 20:08:34,643 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:34,739 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:34,741 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:34,742 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:34,746 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:34,746 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:34,746 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:34,746 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 20:08:34,747 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:34,747 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:34,747 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:34,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:34,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:34,757 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:34,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:34,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 20:08:34,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:34,843 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:34,851 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:34,857 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 189 [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:35,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 16 [2020-10-27 20:08:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:35,043 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:08:35,043 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:35,604 WARN L193 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 56 [2020-10-27 20:08:35,838 WARN L193 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 60 [2020-10-27 20:08:36,074 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 56 [2020-10-27 20:08:36,076 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 20:08:36,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:36,087 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:36,125 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 40 [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 20:08:36,126 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:36,127 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:08:36,127 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:36,391 INFO L134 CoverageAnalysis]: Checked inductivity of 23 backedges. 12 proven. 6 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-27 20:08:36,392 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1464282736] [2020-10-27 20:08:36,392 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 20:08:36,392 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [25] total 25 [2020-10-27 20:08:36,393 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [339606892] [2020-10-27 20:08:36,393 INFO L461 AbstractCegarLoop]: Interpolant automaton has 25 states [2020-10-27 20:08:36,393 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 20:08:36,394 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 25 interpolants. [2020-10-27 20:08:36,396 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=550, Unknown=0, NotChecked=0, Total=600 [2020-10-27 20:08:36,396 INFO L87 Difference]: Start difference. First operand 49 states and 54 transitions. Second operand 25 states. [2020-10-27 20:08:38,023 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 20:08:38,024 INFO L93 Difference]: Finished difference Result 53 states and 57 transitions. [2020-10-27 20:08:38,024 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2020-10-27 20:08:38,024 INFO L78 Accepts]: Start accepts. Automaton has 25 states. Word has length 55 [2020-10-27 20:08:38,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 20:08:38,025 INFO L225 Difference]: With dead ends: 53 [2020-10-27 20:08:38,025 INFO L226 Difference]: Without dead ends: 49 [2020-10-27 20:08:38,026 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 100 ImplicationChecksByTransitivity, 2.0s TimeCoverageRelationStatistics Valid=116, Invalid=1144, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 20:08:38,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 49 states. [2020-10-27 20:08:38,035 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 49 to 49. [2020-10-27 20:08:38,036 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-27 20:08:38,036 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 53 transitions. [2020-10-27 20:08:38,036 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 53 transitions. Word has length 55 [2020-10-27 20:08:38,037 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 20:08:38,037 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 53 transitions. [2020-10-27 20:08:38,037 INFO L482 AbstractCegarLoop]: Interpolant automaton has 25 states. [2020-10-27 20:08:38,037 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 53 transitions. [2020-10-27 20:08:38,037 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 20:08:38,038 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 20:08:38,038 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 20:08:38,038 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-10-27 20:08:38,038 INFO L429 AbstractCegarLoop]: === Iteration 14 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 20:08:38,038 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 20:08:38,039 INFO L82 PathProgramCache]: Analyzing trace with hash -506293652, now seen corresponding path program 1 times [2020-10-27 20:08:38,039 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 20:08:38,039 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [699389354] [2020-10-27 20:08:38,039 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 20:08:38,069 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:38,092 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:39,216 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:40,538 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:43,070 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 75 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5000 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 35 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 59 [2020-10-27 20:08:43,071 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:43,382 WARN L193 SmtUtils]: Spent 148.00 ms on a formula simplification. DAG size of input: 89 DAG size of output: 49 [2020-10-27 20:08:43,506 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 62 DAG size of output: 53 [2020-10-27 20:08:43,622 WARN L193 SmtUtils]: Spent 100.00 ms on a formula simplification. DAG size of input: 48 DAG size of output: 41 [2020-10-27 20:08:44,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 20:08:44,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:44,079 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:44,081 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:44,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 20:08:44,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:44,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2 [2020-10-27 20:08:44,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 20:08:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:44,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 20:08:44,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:44,120 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-27 20:08:44,130 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:44,136 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:44,380 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 32 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 249 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 17 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 30 [2020-10-27 20:08:44,381 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:44,911 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-27 20:08:44,915 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:44,917 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:44,933 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:44,933 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:44,933 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:44,933 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 17 [2020-10-27 20:08:44,933 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 20:08:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 20:08:44,934 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 20:08:44,934 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:45,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 11 [2020-10-27 20:08:45,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:45,065 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:45,098 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:45,098 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-27 20:08:45,098 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 35 [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-27 20:08:45,099 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:45,511 WARN L193 SmtUtils]: Spent 143.00 ms on a formula simplification. DAG size of input: 59 DAG size of output: 50 [2020-10-27 20:08:45,518 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 31 [2020-10-27 20:08:45,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 20:08:45,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 208 [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 20:08:45,734 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 20:08:45,735 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 21 [2020-10-27 20:08:45,735 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 20:08:51,811 WARN L193 SmtUtils]: Spent 113.00 ms on a formula simplification. DAG size of input: 57 DAG size of output: 39 [2020-10-27 20:08:52,295 WARN L193 SmtUtils]: Spent 320.00 ms on a formula simplification. DAG size of input: 65 DAG size of output: 41 [2020-10-27 20:08:53,609 WARN L193 SmtUtils]: Spent 1.04 s on a formula simplification. DAG size of input: 132 DAG size of output: 79 [2020-10-27 20:09:23,381 WARN L193 SmtUtils]: Spent 28.24 s on a formula simplification. DAG size of input: 472 DAG size of output: 350