/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=SMALLESTAMONGWIDE --traceabstraction.additional.smt.options tolerance=0.3 --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_prepend_unequal.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-29 09:31:56,825 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-29 09:31:56,828 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-29 09:31:56,885 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-29 09:31:56,886 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-29 09:31:56,894 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-29 09:31:56,896 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-29 09:31:56,900 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-29 09:31:56,903 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-29 09:31:56,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-29 09:31:56,910 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-29 09:31:56,912 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-29 09:31:56,912 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-29 09:31:56,915 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-29 09:31:56,918 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-29 09:31:56,920 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-29 09:31:56,921 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-29 09:31:56,925 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-29 09:31:56,933 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-29 09:31:56,941 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-29 09:31:56,942 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-29 09:31:56,946 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-29 09:31:56,948 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-29 09:31:56,950 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-29 09:31:56,962 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-29 09:31:56,963 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-29 09:31:56,963 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-29 09:31:56,966 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-29 09:31:56,966 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-29 09:31:56,967 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-29 09:31:56,967 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-29 09:31:56,968 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-29 09:31:56,970 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-29 09:31:56,971 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-29 09:31:56,972 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-29 09:31:56,972 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-29 09:31:56,972 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-29 09:31:56,973 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-29 09:31:56,973 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-29 09:31:56,974 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-29 09:31:56,974 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-29 09:31:56,976 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 [2020-10-29 09:31:57,021 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-29 09:31:57,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-29 09:31:57,026 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-29 09:31:57,026 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-29 09:31:57,026 INFO L138 SettingsManager]: * Use SBE=true [2020-10-29 09:31:57,026 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-29 09:31:57,027 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-29 09:31:57,028 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-29 09:31:57,028 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-29 09:31:57,028 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-29 09:31:57,028 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-29 09:31:57,028 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-29 09:31:57,029 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-29 09:31:57,029 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-29 09:31:57,029 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-29 09:31:57,029 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-29 09:31:57,029 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-29 09:31:57,030 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-29 09:31:57,030 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-29 09:31:57,030 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-29 09:31:57,030 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-29 09:31:57,030 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-29 09:31:57,031 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-29 09:31:57,031 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-29 09:31:57,031 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=SMALLESTAMONGWIDE;tolerance=0.3;log-additional-information=true;unknown-allowed=true; [2020-10-29 09:31:57,381 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-29 09:31:57,409 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-29 09:31:57,412 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-29 09:31:57,413 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-29 09:31:57,414 INFO L275 PluginConnector]: CDTParser initialized [2020-10-29 09:31:57,415 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2020-10-29 09:31:57,496 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4874e3f/1b89e6797c8342f3a87fb2750cb10af0/FLAGf48809a70 [2020-10-29 09:31:58,188 INFO L306 CDTParser]: Found 1 translation units. [2020-10-29 09:31:58,188 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-simple/sll2n_prepend_unequal.i [2020-10-29 09:31:58,202 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4874e3f/1b89e6797c8342f3a87fb2750cb10af0/FLAGf48809a70 [2020-10-29 09:31:58,497 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/2c4874e3f/1b89e6797c8342f3a87fb2750cb10af0 [2020-10-29 09:31:58,500 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-29 09:31:58,507 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-29 09:31:58,509 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:58,509 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-29 09:31:58,514 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-29 09:31:58,515 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:58" (1/1) ... [2020-10-29 09:31:58,519 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5146635b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:58, skipping insertion in model container [2020-10-29 09:31:58,520 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 29.10 09:31:58" (1/1) ... [2020-10-29 09:31:58,527 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-29 09:31:58,565 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-29 09:31:58,888 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:58,898 INFO L203 MainTranslator]: Completed pre-run [2020-10-29 09:31:58,949 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-29 09:31:59,046 INFO L208 MainTranslator]: Completed translation [2020-10-29 09:31:59,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59 WrapperNode [2020-10-29 09:31:59,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-29 09:31:59,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-29 09:31:59,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-29 09:31:59,050 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-29 09:31:59,064 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,067 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,108 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,108 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,144 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,150 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,154 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (1/1) ... [2020-10-29 09:31:59,164 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-29 09:31:59,165 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-29 09:31:59,165 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-29 09:31:59,165 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-29 09:31:59,166 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (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 [2020-10-29 09:31:59,250 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-29 09:31:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-29 09:31:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-29 09:31:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-29 09:31:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-29 09:31:59,251 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-29 09:31:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-10-29 09:31:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-10-29 09:31:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-10-29 09:31:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_prepend [2020-10-29 09:31:59,252 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-29 09:31:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-29 09:31:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-29 09:31:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-29 09:31:59,253 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-29 09:31:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-29 09:31:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-29 09:31:59,254 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-29 09:31:59,255 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-29 09:31:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-29 09:31:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-29 09:31:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-29 09:31:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-29 09:31:59,256 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-29 09:31:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-29 09:31:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-29 09:31:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-29 09:31:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-29 09:31:59,257 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-29 09:31:59,258 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-29 09:31:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-29 09:31:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-29 09:31:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-29 09:31:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-29 09:31:59,259 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-29 09:31:59,260 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-29 09:31:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-29 09:31:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-29 09:31:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-29 09:31:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-29 09:31:59,261 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-29 09:31:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-29 09:31:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-29 09:31:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-29 09:31:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-29 09:31:59,262 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-29 09:31:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-29 09:31:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-29 09:31:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-29 09:31:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-29 09:31:59,263 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-29 09:31:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-29 09:31:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-29 09:31:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-29 09:31:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-29 09:31:59,264 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-29 09:31:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-29 09:31:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-29 09:31:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-29 09:31:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-29 09:31:59,265 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-29 09:31:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-29 09:31:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-29 09:31:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-29 09:31:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-29 09:31:59,266 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-29 09:31:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-29 09:31:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-29 09:31:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-29 09:31:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-29 09:31:59,267 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-29 09:31:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-29 09:31:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-29 09:31:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-29 09:31:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-29 09:31:59,268 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-29 09:31:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-29 09:31:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-29 09:31:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-29 09:31:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-29 09:31:59,269 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-29 09:31:59,270 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-29 09:31:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-29 09:31:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-29 09:31:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-29 09:31:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-29 09:31:59,271 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-29 09:31:59,272 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-29 09:31:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-29 09:31:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-29 09:31:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-29 09:31:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-29 09:31:59,273 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-10-29 09:31:59,274 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-29 09:31:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-29 09:31:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-29 09:31:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-10-29 09:31:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-10-29 09:31:59,275 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-29 09:31:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-29 09:31:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure sll_prepend [2020-10-29 09:31:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-29 09:31:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-29 09:31:59,276 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-29 09:31:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-29 09:31:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-29 09:31:59,277 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-29 09:31:59,837 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-29 09:31:59,992 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-29 09:31:59,992 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-29 09:31:59,994 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:59 BoogieIcfgContainer [2020-10-29 09:31:59,994 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-29 09:31:59,996 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-29 09:31:59,996 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-29 09:32:00,000 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-29 09:32:00,000 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 29.10 09:31:58" (1/3) ... [2020-10-29 09:32:00,001 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b1ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:32:00, skipping insertion in model container [2020-10-29 09:32:00,001 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 29.10 09:31:59" (2/3) ... [2020-10-29 09:32:00,002 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@747b1ce1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 29.10 09:32:00, skipping insertion in model container [2020-10-29 09:32:00,002 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 29.10 09:31:59" (3/3) ... [2020-10-29 09:32:00,003 INFO L111 eAbstractionObserver]: Analyzing ICFG sll2n_prepend_unequal.i [2020-10-29 09:32:00,016 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-29 09:32:00,022 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-29 09:32:00,036 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-29 09:32:00,063 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-29 09:32:00,063 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-29 09:32:00,063 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-29 09:32:00,064 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-29 09:32:00,064 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-29 09:32:00,064 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-29 09:32:00,064 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-29 09:32:00,064 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-29 09:32:00,082 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2020-10-29 09:32:00,089 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-29 09:32:00,089 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:00,090 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] [2020-10-29 09:32:00,091 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:00,097 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:00,097 INFO L82 PathProgramCache]: Analyzing trace with hash 1332459150, now seen corresponding path program 1 times [2020-10-29 09:32:00,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:00,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2042096456] [2020-10-29 09:32:00,108 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:00,261 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:00,304 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:00,531 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:01,900 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:01,900 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 43 [2020-10-29 09:32:01,901 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:01,901 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1634 [2020-10-29 09:32:01,903 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:01,904 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:32:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:01,904 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 27 [2020-10-29 09:32:01,904 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:32:02,041 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,052 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,056 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:02,057 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:02,057 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:02,057 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:32:02,057 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:02,057 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:02,058 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:02,058 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:02,119 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:02,129 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,132 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,149 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:02,149 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:02,149 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:02,150 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-29 09:32:02,150 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:02,150 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:02,150 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:32:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:02,152 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:02,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:32:02,158 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:32:02,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,186 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,343 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:02,343 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:02,343 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:02,344 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 166 [2020-10-29 09:32:02,344 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:02,344 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:32:02,344 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:02,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-29 09:32:02,345 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:02,458 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:02,468 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:02,475 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:02,544 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:02,544 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:02,544 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:02,544 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-29 09:32:02,545 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:02,545 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:02,545 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:32:02,546 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:02,633 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:32:02,634 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2042096456] [2020-10-29 09:32:02,636 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:32:02,636 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-10-29 09:32:02,637 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [641461637] [2020-10-29 09:32:02,642 INFO L461 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-10-29 09:32:02,642 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:02,656 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-10-29 09:32:02,657 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=111, Unknown=0, NotChecked=0, Total=132 [2020-10-29 09:32:02,660 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 12 states. [2020-10-29 09:32:03,288 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:03,289 INFO L93 Difference]: Finished difference Result 97 states and 123 transitions. [2020-10-29 09:32:03,289 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:32:03,291 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 29 [2020-10-29 09:32:03,291 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:03,301 INFO L225 Difference]: With dead ends: 97 [2020-10-29 09:32:03,301 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:32:03,306 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=53, Invalid=289, Unknown=0, NotChecked=0, Total=342 [2020-10-29 09:32:03,324 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:32:03,349 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 36. [2020-10-29 09:32:03,351 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 36 states. [2020-10-29 09:32:03,352 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36 states to 36 states and 39 transitions. [2020-10-29 09:32:03,354 INFO L78 Accepts]: Start accepts. Automaton has 36 states and 39 transitions. Word has length 29 [2020-10-29 09:32:03,354 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:03,354 INFO L481 AbstractCegarLoop]: Abstraction has 36 states and 39 transitions. [2020-10-29 09:32:03,355 INFO L482 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-10-29 09:32:03,355 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states and 39 transitions. [2020-10-29 09:32:03,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-10-29 09:32:03,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:03,357 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] [2020-10-29 09:32:03,357 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-29 09:32:03,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:03,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:03,358 INFO L82 PathProgramCache]: Analyzing trace with hash 615945439, now seen corresponding path program 1 times [2020-10-29 09:32:03,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:03,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [486668026] [2020-10-29 09:32:03,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:03,376 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,383 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,509 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:03,509 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 45 [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 132 [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:03,510 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:03,511 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:03,511 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:03,556 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:03,561 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,562 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,569 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:03,569 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:03,570 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:03,570 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 7 [2020-10-29 09:32:03,570 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:03,570 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:03,570 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:03,571 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:03,571 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:03,595 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:03,598 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,601 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,616 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:03,616 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:03,616 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:03,616 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-29 09:32:03,617 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:03,617 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:03,617 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-29 09:32:03,618 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:32:03,618 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:03,641 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 13 [2020-10-29 09:32:03,650 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,655 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,665 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:03,665 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:03,665 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:03,666 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:32:03,666 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:03,666 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-29 09:32:03,668 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:03,668 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:32:03,675 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:03,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:03,680 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:03,687 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:03,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:03,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:03,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 8 [2020-10-29 09:32:03,695 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:03,695 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:03,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:03,696 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:03,696 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:32:03,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-29 09:32:03,708 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [486668026] [2020-10-29 09:32:03,708 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-29 09:32:03,709 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-29 09:32:03,709 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1682596808] [2020-10-29 09:32:03,710 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-29 09:32:03,711 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:03,711 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-29 09:32:03,714 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-29 09:32:03,714 INFO L87 Difference]: Start difference. First operand 36 states and 39 transitions. Second operand 7 states. [2020-10-29 09:32:04,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:04,036 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-29 09:32:04,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-10-29 09:32:04,037 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 31 [2020-10-29 09:32:04,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:04,039 INFO L225 Difference]: With dead ends: 64 [2020-10-29 09:32:04,040 INFO L226 Difference]: Without dead ends: 40 [2020-10-29 09:32:04,042 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 [2020-10-29 09:32:04,042 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 40 states. [2020-10-29 09:32:04,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 40 to 37. [2020-10-29 09:32:04,055 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2020-10-29 09:32:04,059 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 40 transitions. [2020-10-29 09:32:04,059 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 40 transitions. Word has length 31 [2020-10-29 09:32:04,060 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:04,060 INFO L481 AbstractCegarLoop]: Abstraction has 37 states and 40 transitions. [2020-10-29 09:32:04,060 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-29 09:32:04,062 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 40 transitions. [2020-10-29 09:32:04,064 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:32:04,065 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:04,065 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] [2020-10-29 09:32:04,065 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-29 09:32:04,065 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:04,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:04,066 INFO L82 PathProgramCache]: Analyzing trace with hash 1373420899, now seen corresponding path program 1 times [2020-10-29 09:32:04,066 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:04,066 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [227468769] [2020-10-29 09:32:04,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:04,097 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:04,106 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,138 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:04,539 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:07,854 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:07,854 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:32:07,854 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:32:07,854 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3755 [2020-10-29 09:32:07,855 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:07,855 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-29 09:32:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:07,855 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 39 [2020-10-29 09:32:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:32:08,031 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:08,034 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,035 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,038 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,038 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:08,039 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,039 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:08,039 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,039 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,040 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,042 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:08,042 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:32:08,069 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:08,077 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,084 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 103 [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:32:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:32:08,183 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,276 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:08,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,290 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,309 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,353 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,354 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:08,354 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:08,354 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 66 [2020-10-29 09:32:08,354 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,355 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-29 09:32:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:08,355 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-29 09:32:08,355 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,414 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:08,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,427 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,551 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,552 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:08,552 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,552 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 130 [2020-10-29 09:32:08,552 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,552 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:08,553 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:08,553 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:08,837 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:32:08,843 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:08,849 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:08,887 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:08,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:08,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:08,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 43 [2020-10-29 09:32:08,888 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:08,889 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:08,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:32:08,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:09,088 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:32:09,089 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [227468769] [2020-10-29 09:32:09,089 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:32:09,089 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [20] total 20 [2020-10-29 09:32:09,090 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [810240707] [2020-10-29 09:32:09,090 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-29 09:32:09,090 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:32:09,091 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-29 09:32:09,092 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=336, Unknown=0, NotChecked=0, Total=380 [2020-10-29 09:32:09,092 INFO L87 Difference]: Start difference. First operand 37 states and 40 transitions. Second operand 20 states. [2020-10-29 09:32:10,326 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:32:10,327 INFO L93 Difference]: Finished difference Result 46 states and 50 transitions. [2020-10-29 09:32:10,327 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-10-29 09:32:10,327 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 40 [2020-10-29 09:32:10,328 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:32:10,329 INFO L225 Difference]: With dead ends: 46 [2020-10-29 09:32:10,329 INFO L226 Difference]: Without dead ends: 41 [2020-10-29 09:32:10,330 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 98 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=99, Invalid=831, Unknown=0, NotChecked=0, Total=930 [2020-10-29 09:32:10,331 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-29 09:32:10,337 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 38. [2020-10-29 09:32:10,337 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2020-10-29 09:32:10,338 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 41 transitions. [2020-10-29 09:32:10,338 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 41 transitions. Word has length 40 [2020-10-29 09:32:10,339 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:32:10,339 INFO L481 AbstractCegarLoop]: Abstraction has 38 states and 41 transitions. [2020-10-29 09:32:10,339 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-29 09:32:10,339 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 41 transitions. [2020-10-29 09:32:10,340 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-10-29 09:32:10,340 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:32:10,340 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] [2020-10-29 09:32:10,341 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-29 09:32:10,341 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:32:10,341 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:32:10,341 INFO L82 PathProgramCache]: Analyzing trace with hash 1375029613, now seen corresponding path program 1 times [2020-10-29 09:32:10,341 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:32:10,342 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [972883637] [2020-10-29 09:32:10,342 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:32:10,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:10,362 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:10,399 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:11,885 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:11,885 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-29 09:32:11,885 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1527 [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 23 [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:32:11,886 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:32:11,887 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:12,396 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:32:12,400 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,401 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:12,403 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:12,404 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:32:12,404 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:12,404 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 3 [2020-10-29 09:32:12,404 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:12,404 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:32:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:12,405 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:32:12,405 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:12,433 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:32:12,441 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,446 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:12,579 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:12,579 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:32:12,579 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:12,580 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 137 [2020-10-29 09:32:12,580 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:12,580 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-29 09:32:12,580 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:12,581 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:32:12,581 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:12,757 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:32:12,761 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,765 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:12,796 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:12,796 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:32:12,796 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:12,796 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 33 [2020-10-29 09:32:12,797 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:12,797 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:32:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:32:12,797 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-29 09:32:12,798 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:12,906 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:32:12,916 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:32:12,922 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:32:13,048 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:32:13,048 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:32:13,048 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:32:13,049 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 131 [2020-10-29 09:32:13,049 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:32:13,049 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:32:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:32:13,049 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:32:13,050 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:32:13,050 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:32:18,887 WARN L193 SmtUtils]: Spent 280.00 ms on a formula simplification. DAG size of input: 61 DAG size of output: 60 [2020-10-29 09:34:04,257 WARN L193 SmtUtils]: Spent 1.70 m on a formula simplification. DAG size of input: 472 DAG size of output: 292 [2020-10-29 09:34:07,212 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:34:07,221 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:34:07,230 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:34:07,287 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:34:07,287 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:34:07,288 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:34:07,288 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 65 [2020-10-29 09:34:07,288 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:34:07,288 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:34:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-29 09:34:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:34:07,289 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 10 [2020-10-29 09:34:07,289 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:34:07,860 WARN L193 SmtUtils]: Spent 286.00 ms on a formula simplification. DAG size of input: 60 DAG size of output: 41 [2020-10-29 09:34:07,900 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-10-29 09:34:07,900 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [972883637] [2020-10-29 09:34:07,901 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:34:07,901 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [22] total 22 [2020-10-29 09:34:07,901 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1638689569] [2020-10-29 09:34:07,902 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-29 09:34:07,902 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:34:07,909 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-29 09:34:07,910 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=50, Invalid=412, Unknown=0, NotChecked=0, Total=462 [2020-10-29 09:34:07,910 INFO L87 Difference]: Start difference. First operand 38 states and 41 transitions. Second operand 22 states. [2020-10-29 09:34:48,339 WARN L193 SmtUtils]: Spent 38.08 s on a formula simplification that was a NOOP. DAG size: 289 [2020-10-29 09:34:49,099 WARN L193 SmtUtils]: Spent 106.00 ms on a formula simplification that was a NOOP. DAG size: 64 [2020-10-29 09:35:37,718 WARN L193 SmtUtils]: Spent 47.27 s on a formula simplification that was a NOOP. DAG size: 306 [2020-10-29 09:36:06,031 WARN L193 SmtUtils]: Spent 165.00 ms on a formula simplification that was a NOOP. DAG size: 62 [2020-10-29 09:36:06,262 WARN L193 SmtUtils]: Spent 111.00 ms on a formula simplification that was a NOOP. DAG size: 51 [2020-10-29 09:36:06,585 WARN L193 SmtUtils]: Spent 121.00 ms on a formula simplification that was a NOOP. DAG size: 53 [2020-10-29 09:36:07,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:07,412 INFO L93 Difference]: Finished difference Result 62 states and 71 transitions. [2020-10-29 09:36:07,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 20 states. [2020-10-29 09:36:07,413 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 40 [2020-10-29 09:36:07,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:07,414 INFO L225 Difference]: With dead ends: 62 [2020-10-29 09:36:07,415 INFO L226 Difference]: Without dead ends: 58 [2020-10-29 09:36:07,416 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 1 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 144 ImplicationChecksByTransitivity, 200.0s TimeCoverageRelationStatistics Valid=119, Invalid=1003, Unknown=0, NotChecked=0, Total=1122 [2020-10-29 09:36:07,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-29 09:36:07,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-29 09:36:07,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:36:07,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-29 09:36:07,430 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 40 [2020-10-29 09:36:07,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:07,430 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-29 09:36:07,430 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-29 09:36:07,430 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-29 09:36:07,432 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:36:07,432 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:07,432 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] [2020-10-29 09:36:07,432 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-29 09:36:07,432 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:07,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:07,433 INFO L82 PathProgramCache]: Analyzing trace with hash -1423512578, now seen corresponding path program 1 times [2020-10-29 09:36:07,433 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:07,433 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1516911251] [2020-10-29 09:36:07,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:07,449 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:07,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,530 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:07,855 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:07,855 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:36:07,855 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-29 09:36:07,856 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 405 [2020-10-29 09:36:07,856 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:07,857 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 13 [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 40 [2020-10-29 09:36:07,858 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-29 09:36:08,058 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:08,060 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,067 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,073 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,074 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:08,074 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,074 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-29 09:36:08,074 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,074 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,075 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:08,078 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-29 09:36:08,137 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:36:08,144 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,149 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,204 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,204 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:36:08,204 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,204 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 59 [2020-10-29 09:36:08,205 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,205 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-29 09:36:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,205 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 19 [2020-10-29 09:36:08,206 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:08,386 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:36:08,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,394 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,407 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,407 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:36:08,407 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,407 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 14 [2020-10-29 09:36:08,407 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,408 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:36:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,408 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:36:08,408 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:08,412 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:36:08,419 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,423 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,440 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 20 [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,441 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-29 09:36:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,442 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 14 [2020-10-29 09:36:08,442 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:08,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-29 09:36:08,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:08,451 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:08,454 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:08,455 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:08,456 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:08,456 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:08,462 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 5 trivial. 0 not checked. [2020-10-29 09:36:08,463 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1516911251] [2020-10-29 09:36:08,463 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-29 09:36:08,463 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11] total 11 [2020-10-29 09:36:08,464 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019643482] [2020-10-29 09:36:08,464 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-29 09:36:08,464 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-29 09:36:08,465 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-29 09:36:08,465 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=90, Unknown=0, NotChecked=0, Total=110 [2020-10-29 09:36:08,465 INFO L87 Difference]: Start difference. First operand 51 states and 57 transitions. Second operand 11 states. [2020-10-29 09:36:09,470 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-29 09:36:09,471 INFO L93 Difference]: Finished difference Result 66 states and 76 transitions. [2020-10-29 09:36:09,473 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-29 09:36:09,474 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 42 [2020-10-29 09:36:09,474 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-29 09:36:09,475 INFO L225 Difference]: With dead ends: 66 [2020-10-29 09:36:09,475 INFO L226 Difference]: Without dead ends: 61 [2020-10-29 09:36:09,476 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 19 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=57, Invalid=249, Unknown=0, NotChecked=0, Total=306 [2020-10-29 09:36:09,477 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2020-10-29 09:36:09,501 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 51. [2020-10-29 09:36:09,501 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-29 09:36:09,502 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 57 transitions. [2020-10-29 09:36:09,502 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 57 transitions. Word has length 42 [2020-10-29 09:36:09,502 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-29 09:36:09,503 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 57 transitions. [2020-10-29 09:36:09,503 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-29 09:36:09,503 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 57 transitions. [2020-10-29 09:36:09,506 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-29 09:36:09,509 INFO L414 BasicCegarLoop]: Found error trace [2020-10-29 09:36:09,509 INFO L422 BasicCegarLoop]: trace histogram [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] [2020-10-29 09:36:09,509 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-29 09:36:09,509 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-29 09:36:09,510 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-29 09:36:09,510 INFO L82 PathProgramCache]: Analyzing trace with hash -1421903864, now seen corresponding path program 1 times [2020-10-29 09:36:09,510 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-29 09:36:09,511 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1863986377] [2020-10-29 09:36:09,511 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-29 09:36:09,531 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:09,537 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,560 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:09,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:13,973 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:13,973 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 58 [2020-10-29 09:36:13,973 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 3 [2020-10-29 09:36:13,974 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4441 [2020-10-29 09:36:13,975 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:13,975 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-29 09:36:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 11 [2020-10-29 09:36:13,975 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 41 [2020-10-29 09:36:13,976 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:14,639 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-29 09:36:14,641 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:14,643 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-29 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 5 [2020-10-29 09:36:14,647 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:14,648 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-29 09:36:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:14,648 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-29 09:36:14,648 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-29 09:36:14,719 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-29 09:36:14,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:14,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:14,797 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:14,797 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 21 [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 69 [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 9 [2020-10-29 09:36:14,798 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:14,799 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-29 09:36:14,799 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:15,147 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 2 [2020-10-29 09:36:15,151 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:15,154 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:15,174 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:15,175 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 10 [2020-10-29 09:36:15,175 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:15,175 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-29 09:36:15,175 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:15,176 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 5 [2020-10-29 09:36:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-29 09:36:15,176 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 7 [2020-10-29 09:36:15,176 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:15,390 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-29 09:36:15,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-29 09:36:15,402 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-29 09:36:15,513 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-29 09:36:15,513 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 17 [2020-10-29 09:36:15,514 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-29 09:36:15,514 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 115 [2020-10-29 09:36:15,514 FATAL L256 erpolLogProxyWrapper]: Heuristic: SMALLESTAMONGWIDE [2020-10-29 09:36:15,514 FATAL L256 erpolLogProxyWrapper]: Tolerance: 0.3 [2020-10-29 09:36:15,514 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-29 09:36:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-29 09:36:15,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 17 [2020-10-29 09:36:15,515 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-29 09:36:16,528 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification. DAG size of input: 36 DAG size of output: 30