/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.trace.refinement.strategy FIXED_PREFERENCES --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.smt.solver Internal_SMTInterpol --traceabstraction.compute.trace.for.counterexample.result false --rcfgbuilder.size.of.a.code.block SequenceOfStatements --traceabstraction.use.minimal.unsat.core.enumeration true --traceabstraction.additional.smt.options produce-proofs=true --traceabstraction.additional.smt.options produce-unsat-cores=true --traceabstraction.additional.smt.options enumeration-timeout=5000 --traceabstraction.additional.smt.options interpolation-heuristic=DEEPEST --traceabstraction.additional.smt.options log-additional-information=true --traceabstraction.additional.smt.options unknown-allowed=true -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf language data_model -i ../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-0f64333 [2020-10-27 19:51:26,779 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-27 19:51:26,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-27 19:51:26,848 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-27 19:51:26,849 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-27 19:51:26,858 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-27 19:51:26,860 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-27 19:51:26,865 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-27 19:51:26,868 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-27 19:51:26,876 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-27 19:51:26,878 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-27 19:51:26,879 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-27 19:51:26,879 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-27 19:51:26,883 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-27 19:51:26,886 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-27 19:51:26,888 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-27 19:51:26,889 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-27 19:51:26,893 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-27 19:51:26,910 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-27 19:51:26,913 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-27 19:51:26,915 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-27 19:51:26,916 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-27 19:51:26,918 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-27 19:51:26,919 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-27 19:51:26,922 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-27 19:51:26,923 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-27 19:51:26,923 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-27 19:51:26,924 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-27 19:51:26,925 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-27 19:51:26,926 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-27 19:51:26,927 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-27 19:51:26,928 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-27 19:51:26,929 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-27 19:51:26,930 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-27 19:51:26,931 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-27 19:51:26,931 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-27 19:51:26,932 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-27 19:51:26,933 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-27 19:51:26,933 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-27 19:51:26,934 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-27 19:51:26,935 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-27 19:51:26,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-27 19:51:26,965 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-27 19:51:26,965 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-27 19:51:26,967 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-27 19:51:26,967 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-27 19:51:26,967 INFO L138 SettingsManager]: * Use SBE=true [2020-10-27 19:51:26,968 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-27 19:51:26,968 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-27 19:51:26,968 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-27 19:51:26,968 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-27 19:51:26,968 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-27 19:51:26,969 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-27 19:51:26,969 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-27 19:51:26,969 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-27 19:51:26,969 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-27 19:51:26,970 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-27 19:51:26,970 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-27 19:51:26,970 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-27 19:51:26,970 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-27 19:51:26,970 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-27 19:51:26,971 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-27 19:51:26,971 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-27 19:51:26,971 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:51:26,971 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-27 19:51:26,972 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-27 19:51:26,972 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-27 19:51:26,972 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-27 19:51:26,972 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-27 19:51:26,973 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-27 19:51:26,973 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-27 19:51:26,973 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Trace refinement strategy -> FIXED_PREFERENCES Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute Interpolants along a Counterexample -> Craig_NestedInterpolation Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: SMT solver -> Internal_SMTInterpol Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Compute trace for counterexample result -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder: Size of a code block -> SequenceOfStatements Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Use minimal unsat core enumeration -> true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: Additional SMT options -> produce-proofs=true;produce-unsat-cores=true;enumeration-timeout=5000;interpolation-heuristic=DEEPEST;log-additional-information=true;unknown-allowed=true; [2020-10-27 19:51:27,340 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-27 19:51:27,370 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-27 19:51:27,373 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-27 19:51:27,374 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-27 19:51:27,375 INFO L275 PluginConnector]: CDTParser initialized [2020-10-27 19:51:27,376 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i [2020-10-27 19:51:27,469 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81882e97/8a7ee407721340718606573c41cc0713/FLAG2be848c47 [2020-10-27 19:51:28,379 INFO L306 CDTParser]: Found 1 translation units. [2020-10-27 19:51:28,380 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/heap-manipulation/bubble_sort_linux-2.i [2020-10-27 19:51:28,408 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81882e97/8a7ee407721340718606573c41cc0713/FLAG2be848c47 [2020-10-27 19:51:28,527 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/e81882e97/8a7ee407721340718606573c41cc0713 [2020-10-27 19:51:28,531 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-27 19:51:28,538 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-27 19:51:28,540 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:28,540 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-27 19:51:28,545 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-27 19:51:28,546 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:28" (1/1) ... [2020-10-27 19:51:28,549 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2af60390 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:28, skipping insertion in model container [2020-10-27 19:51:28,549 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.10 07:51:28" (1/1) ... [2020-10-27 19:51:28,558 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-27 19:51:28,601 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-27 19:51:29,359 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:29,374 INFO L203 MainTranslator]: Completed pre-run [2020-10-27 19:51:29,488 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-27 19:51:29,698 INFO L208 MainTranslator]: Completed translation [2020-10-27 19:51:29,699 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29 WrapperNode [2020-10-27 19:51:29,699 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-27 19:51:29,700 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-27 19:51:29,700 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-27 19:51:29,700 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-27 19:51:29,717 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,717 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,739 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,740 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,773 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,786 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,793 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... [2020-10-27 19:51:29,810 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-27 19:51:29,811 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-27 19:51:29,811 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-27 19:51:29,811 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-27 19:51:29,815 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-27 19:51:29,901 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-27 19:51:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-27 19:51:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-27 19:51:29,902 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-27 19:51:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-27 19:51:29,903 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2020-10-27 19:51:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2020-10-27 19:51:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_add [2020-10-27 19:51:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure __list_del [2020-10-27 19:51:29,904 INFO L138 BoogieDeclarations]: Found implementation of procedure list_add [2020-10-27 19:51:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure list_move [2020-10-27 19:51:29,905 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_insert [2020-10-27 19:51:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_read [2020-10-27 19:51:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_destroy [2020-10-27 19:51:29,906 INFO L138 BoogieDeclarations]: Found implementation of procedure val_from_node [2020-10-27 19:51:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort_pass [2020-10-27 19:51:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure gl_sort [2020-10-27 19:51:29,907 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-27 19:51:29,907 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-27 19:51:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-27 19:51:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-27 19:51:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-27 19:51:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-27 19:51:29,908 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-27 19:51:29,909 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-27 19:51:29,910 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-27 19:51:29,911 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-27 19:51:29,912 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-27 19:51:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-27 19:51:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-27 19:51:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-27 19:51:29,913 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-27 19:51:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-27 19:51:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-27 19:51:29,914 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-27 19:51:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-27 19:51:29,915 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-27 19:51:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-27 19:51:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-27 19:51:29,916 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-27 19:51:29,917 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-27 19:51:29,918 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-27 19:51:29,918 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-27 19:51:29,918 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-27 19:51:29,918 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-27 19:51:29,919 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-27 19:51:29,920 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-27 19:51:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-27 19:51:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-27 19:51:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-27 19:51:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-27 19:51:29,921 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-27 19:51:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-27 19:51:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-27 19:51:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-27 19:51:29,922 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-27 19:51:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-27 19:51:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-27 19:51:29,923 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-27 19:51:29,924 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-27 19:51:29,925 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-27 19:51:29,926 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-27 19:51:29,927 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-27 19:51:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-27 19:51:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-27 19:51:29,928 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-27 19:51:29,929 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-27 19:51:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-27 19:51:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-27 19:51:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-27 19:51:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-27 19:51:29,930 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __underflow [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __uflow [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure __overflow [2020-10-27 19:51:29,931 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_getc [2020-10-27 19:51:29,932 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_putc [2020-10-27 19:51:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_feof [2020-10-27 19:51:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ferror [2020-10-27 19:51:29,933 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_peekc_locked [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_flockfile [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_funlockfile [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_ftrylockfile [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfscanf [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_vfprintf [2020-10-27 19:51:29,934 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_padn [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_sgetn [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekoff [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_seekpos [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure _IO_free_backup_area [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure remove [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure rename [2020-10-27 19:51:29,935 INFO L130 BoogieDeclarations]: Found specification of procedure renameat [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure tmpfile [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure tmpnam_r [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure tempnam [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure fclose [2020-10-27 19:51:29,936 INFO L130 BoogieDeclarations]: Found specification of procedure fflush [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure fflush_unlocked [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure fopen [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure freopen [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure fdopen [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure fmemopen [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure open_memstream [2020-10-27 19:51:29,937 INFO L130 BoogieDeclarations]: Found specification of procedure setbuf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure setvbuf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure setbuffer [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure setlinebuf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure fprintf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure printf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure sprintf [2020-10-27 19:51:29,938 INFO L130 BoogieDeclarations]: Found specification of procedure vfprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure vprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure vsprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure snprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure vsnprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure vdprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure dprintf [2020-10-27 19:51:29,939 INFO L130 BoogieDeclarations]: Found specification of procedure fscanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure scanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure sscanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure vfscanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure vscanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure vsscanf [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc [2020-10-27 19:51:29,940 INFO L130 BoogieDeclarations]: Found specification of procedure getc [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure getchar [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure getc_unlocked [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure getchar_unlocked [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure fgetc_unlocked [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure fputc [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure putc [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure putchar [2020-10-27 19:51:29,941 INFO L130 BoogieDeclarations]: Found specification of procedure fputc_unlocked [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure putc_unlocked [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure putchar_unlocked [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure getw [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure putw [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure fgets [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure gets [2020-10-27 19:51:29,942 INFO L130 BoogieDeclarations]: Found specification of procedure __getdelim [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure getdelim [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure getline [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure fputs [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure puts [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure ungetc [2020-10-27 19:51:29,943 INFO L130 BoogieDeclarations]: Found specification of procedure fread [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure fread_unlocked [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure fwrite_unlocked [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure fseek [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftell [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure rewind [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure fseeko [2020-10-27 19:51:29,944 INFO L130 BoogieDeclarations]: Found specification of procedure ftello [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure fgetpos [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure fsetpos [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure feof [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure ferror [2020-10-27 19:51:29,945 INFO L130 BoogieDeclarations]: Found specification of procedure clearerr_unlocked [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure feof_unlocked [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure ferror_unlocked [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure perror [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure fileno [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure fileno_unlocked [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure popen [2020-10-27 19:51:29,946 INFO L130 BoogieDeclarations]: Found specification of procedure pclose [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure ctermid [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure flockfile [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure ftrylockfile [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure funlockfile [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2020-10-27 19:51:29,947 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure __list_add [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure __list_del [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure list_add [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure list_move [2020-10-27 19:51:29,948 INFO L130 BoogieDeclarations]: Found specification of procedure gl_insert [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure gl_read [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure gl_destroy [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure val_from_node [2020-10-27 19:51:29,949 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort_pass [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure gl_sort [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2020-10-27 19:51:29,950 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-27 19:51:30,995 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-27 19:51:30,995 INFO L298 CfgBuilder]: Removed 41 assume(true) statements. [2020-10-27 19:51:30,998 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:30 BoogieIcfgContainer [2020-10-27 19:51:30,998 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-27 19:51:31,000 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-27 19:51:31,000 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-27 19:51:31,004 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-27 19:51:31,004 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.10 07:51:28" (1/3) ... [2020-10-27 19:51:31,005 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cbadaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:31, skipping insertion in model container [2020-10-27 19:51:31,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.10 07:51:29" (2/3) ... [2020-10-27 19:51:31,006 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@12cbadaf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.10 07:51:31, skipping insertion in model container [2020-10-27 19:51:31,006 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.10 07:51:30" (3/3) ... [2020-10-27 19:51:31,008 INFO L111 eAbstractionObserver]: Analyzing ICFG bubble_sort_linux-2.i [2020-10-27 19:51:31,021 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-10-27 19:51:31,028 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-27 19:51:31,043 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-27 19:51:31,073 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-27 19:51:31,073 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-27 19:51:31,073 INFO L379 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-10-27 19:51:31,073 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-27 19:51:31,073 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-27 19:51:31,074 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-27 19:51:31,074 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-27 19:51:31,074 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-27 19:51:31,097 INFO L276 IsEmpty]: Start isEmpty. Operand 150 states. [2020-10-27 19:51:31,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-27 19:51:31,104 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:31,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:31,105 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:31,112 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:31,112 INFO L82 PathProgramCache]: Analyzing trace with hash -246079649, now seen corresponding path program 1 times [2020-10-27 19:51:31,127 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:31,127 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [241499705] [2020-10-27 19:51:31,128 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:31,319 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:31,395 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:31,483 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:31,720 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:31,720 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 30 [2020-10-27 19:51:31,720 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:51:31,721 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 395 [2020-10-27 19:51:31,723 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 14 [2020-10-27 19:51:31,724 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:31,724 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 3 [2020-10-27 19:51:31,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:31,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:31,840 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:31,850 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:31,851 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:31,851 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:31,851 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 12 [2020-10-27 19:51:31,851 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:31,852 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:31,852 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:31,880 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:31,882 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:31,885 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:31,888 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:31,888 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:31,888 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:31,888 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 4 [2020-10-27 19:51:31,889 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 2 [2020-10-27 19:51:31,889 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:31,889 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:31,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:31,896 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [241499705] [2020-10-27 19:51:31,898 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:31,899 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-27 19:51:31,899 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1480897691] [2020-10-27 19:51:31,904 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-27 19:51:31,905 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:31,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-27 19:51:31,919 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-27 19:51:31,922 INFO L87 Difference]: Start difference. First operand 150 states. Second operand 4 states. [2020-10-27 19:51:32,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:32,559 INFO L93 Difference]: Finished difference Result 309 states and 499 transitions. [2020-10-27 19:51:32,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-27 19:51:32,561 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-10-27 19:51:32,562 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:32,574 INFO L225 Difference]: With dead ends: 309 [2020-10-27 19:51:32,574 INFO L226 Difference]: Without dead ends: 150 [2020-10-27 19:51:32,581 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-27 19:51:32,601 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 150 states. [2020-10-27 19:51:32,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 150 to 132. [2020-10-27 19:51:32,646 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 132 states. [2020-10-27 19:51:32,648 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 132 states to 132 states and 153 transitions. [2020-10-27 19:51:32,650 INFO L78 Accepts]: Start accepts. Automaton has 132 states and 153 transitions. Word has length 16 [2020-10-27 19:51:32,651 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:32,651 INFO L481 AbstractCegarLoop]: Abstraction has 132 states and 153 transitions. [2020-10-27 19:51:32,651 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-27 19:51:32,651 INFO L276 IsEmpty]: Start isEmpty. Operand 132 states and 153 transitions. [2020-10-27 19:51:32,653 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-27 19:51:32,653 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:32,654 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:32,654 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-27 19:51:32,654 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:32,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:32,655 INFO L82 PathProgramCache]: Analyzing trace with hash 1061752932, now seen corresponding path program 1 times [2020-10-27 19:51:32,655 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:32,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [925865900] [2020-10-27 19:51:32,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:32,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:32,737 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,044 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,045 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 56 [2020-10-27 19:51:33,045 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,045 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 337 [2020-10-27 19:51:33,045 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:33,046 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:33,048 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 43 [2020-10-27 19:51:33,048 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:51:33,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:33,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,169 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,184 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:33,185 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,186 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:33,186 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:33,304 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:33,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,325 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,431 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,432 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:33,432 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,432 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 114 [2020-10-27 19:51:33,432 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,433 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,434 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 19:51:33,434 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 2 [2020-10-27 19:51:33,453 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:33,465 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,469 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:33,493 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,493 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 25 [2020-10-27 19:51:33,495 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,495 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,496 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:33,497 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:51:33,538 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:33,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,544 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,562 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,562 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:33,562 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,562 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 19 [2020-10-27 19:51:33,563 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,563 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:33,563 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:33,571 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:33,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:33,576 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:33,585 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:33,586 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:33,586 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:33,586 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:51:33,586 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:33,586 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 1 [2020-10-27 19:51:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:33,587 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 1 [2020-10-27 19:51:33,587 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:33,601 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:33,602 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [925865900] [2020-10-27 19:51:33,602 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:33,602 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-10-27 19:51:33,603 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [356981706] [2020-10-27 19:51:33,605 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-10-27 19:51:33,605 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:33,609 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-10-27 19:51:33,610 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-10-27 19:51:33,611 INFO L87 Difference]: Start difference. First operand 132 states and 153 transitions. Second operand 8 states. [2020-10-27 19:51:34,732 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:34,733 INFO L93 Difference]: Finished difference Result 154 states and 183 transitions. [2020-10-27 19:51:34,734 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-27 19:51:34,734 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 36 [2020-10-27 19:51:34,735 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:34,737 INFO L225 Difference]: With dead ends: 154 [2020-10-27 19:51:34,737 INFO L226 Difference]: Without dead ends: 149 [2020-10-27 19:51:34,739 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-10-27 19:51:34,739 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 149 states. [2020-10-27 19:51:34,765 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 149 to 131. [2020-10-27 19:51:34,765 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 131 states. [2020-10-27 19:51:34,766 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 131 states to 131 states and 151 transitions. [2020-10-27 19:51:34,767 INFO L78 Accepts]: Start accepts. Automaton has 131 states and 151 transitions. Word has length 36 [2020-10-27 19:51:34,767 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:34,767 INFO L481 AbstractCegarLoop]: Abstraction has 131 states and 151 transitions. [2020-10-27 19:51:34,767 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-10-27 19:51:34,767 INFO L276 IsEmpty]: Start isEmpty. Operand 131 states and 151 transitions. [2020-10-27 19:51:34,768 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-10-27 19:51:34,769 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:34,769 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:34,769 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-27 19:51:34,769 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:34,770 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:34,770 INFO L82 PathProgramCache]: Analyzing trace with hash 1176936722, now seen corresponding path program 1 times [2020-10-27 19:51:34,770 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:34,770 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2019484634] [2020-10-27 19:51:34,770 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:34,803 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:34,841 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:35,344 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:35,344 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 59 [2020-10-27 19:51:35,345 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:35,345 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 539 [2020-10-27 19:51:35,345 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 11 [2020-10-27 19:51:35,345 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:35,346 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 46 [2020-10-27 19:51:35,346 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:35,469 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:35,475 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:35,479 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:35,492 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:35,492 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:35,492 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:35,492 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:51:35,493 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:35,493 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:35,493 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:35,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:35,544 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:35,558 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:35,847 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:35,847 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:35,847 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:35,847 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 301 [2020-10-27 19:51:35,848 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:35,848 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 31 [2020-10-27 19:51:35,848 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:35,905 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:35,918 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:35,931 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:36,150 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:36,150 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 231 [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 7 [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:36,151 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 18 [2020-10-27 19:51:36,152 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:36,257 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:36,270 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:36,278 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:36,346 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:36,347 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:36,347 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:36,347 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 19:51:36,347 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:51:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:36,348 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 13 [2020-10-27 19:51:36,348 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:36,411 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:36,416 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:36,421 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:36,442 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:36,442 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:36,443 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:36,443 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 24 [2020-10-27 19:51:36,443 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:36,443 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:36,444 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:36,444 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:36,506 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:36,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2019484634] [2020-10-27 19:51:36,506 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:36,507 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-10-27 19:51:36,507 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [490939252] [2020-10-27 19:51:36,507 INFO L461 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-10-27 19:51:36,507 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:36,508 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-10-27 19:51:36,508 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=210, Unknown=0, NotChecked=0, Total=240 [2020-10-27 19:51:36,509 INFO L87 Difference]: Start difference. First operand 131 states and 151 transitions. Second operand 16 states. [2020-10-27 19:51:37,898 WARN L193 SmtUtils]: Spent 126.00 ms on a formula simplification. DAG size of input: 67 DAG size of output: 62 [2020-10-27 19:51:38,073 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 19:51:38,220 WARN L193 SmtUtils]: Spent 112.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 19:51:38,384 WARN L193 SmtUtils]: Spent 129.00 ms on a formula simplification. DAG size of input: 70 DAG size of output: 65 [2020-10-27 19:51:38,535 WARN L193 SmtUtils]: Spent 101.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 59 [2020-10-27 19:51:40,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:40,574 INFO L93 Difference]: Finished difference Result 250 states and 297 transitions. [2020-10-27 19:51:40,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-10-27 19:51:40,575 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 39 [2020-10-27 19:51:40,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:40,580 INFO L225 Difference]: With dead ends: 250 [2020-10-27 19:51:40,581 INFO L226 Difference]: Without dead ends: 242 [2020-10-27 19:51:40,582 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 131 ImplicationChecksByTransitivity, 1.8s TimeCoverageRelationStatistics Valid=228, Invalid=962, Unknown=0, NotChecked=0, Total=1190 [2020-10-27 19:51:40,586 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 242 states. [2020-10-27 19:51:40,644 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 242 to 211. [2020-10-27 19:51:40,644 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 211 states. [2020-10-27 19:51:40,649 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 211 states to 211 states and 253 transitions. [2020-10-27 19:51:40,649 INFO L78 Accepts]: Start accepts. Automaton has 211 states and 253 transitions. Word has length 39 [2020-10-27 19:51:40,649 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:40,650 INFO L481 AbstractCegarLoop]: Abstraction has 211 states and 253 transitions. [2020-10-27 19:51:40,650 INFO L482 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-10-27 19:51:40,650 INFO L276 IsEmpty]: Start isEmpty. Operand 211 states and 253 transitions. [2020-10-27 19:51:40,651 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-10-27 19:51:40,651 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:40,651 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:40,655 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-27 19:51:40,655 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:40,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:40,656 INFO L82 PathProgramCache]: Analyzing trace with hash 1868463441, now seen corresponding path program 1 times [2020-10-27 19:51:40,656 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:40,656 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1876673396] [2020-10-27 19:51:40,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:40,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:40,730 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:41,613 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:41,613 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 62 [2020-10-27 19:51:41,614 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:41,614 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 901 [2020-10-27 19:51:41,614 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 19:51:41,614 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:41,615 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 49 [2020-10-27 19:51:41,615 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:41,770 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:41,775 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:41,778 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:41,792 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:41,792 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:41,792 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 16 [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:41,793 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:41,827 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:41,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:41,869 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:42,307 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:42,308 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:42,308 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:42,308 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 452 [2020-10-27 19:51:42,308 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:42,308 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:42,309 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:42,309 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:42,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:42,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:42,432 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:42,705 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:42,705 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:42,705 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:42,705 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 19:51:42,705 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:42,706 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:42,706 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:42,949 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:42,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:42,968 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:43,080 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:43,081 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:43,081 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:43,081 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 122 [2020-10-27 19:51:43,081 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:43,081 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:43,082 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:43,082 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:43,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:43,175 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:43,180 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:43,202 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:43,203 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:43,203 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:43,203 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 26 [2020-10-27 19:51:43,203 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:43,204 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:43,204 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:43,273 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:43,274 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1876673396] [2020-10-27 19:51:43,274 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:43,274 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:51:43,275 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2022006387] [2020-10-27 19:51:43,275 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:51:43,275 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:43,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:51:43,276 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=297, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:51:43,277 INFO L87 Difference]: Start difference. First operand 211 states and 253 transitions. Second operand 19 states. [2020-10-27 19:51:47,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:47,438 INFO L93 Difference]: Finished difference Result 335 states and 405 transitions. [2020-10-27 19:51:47,439 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 19:51:47,439 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 42 [2020-10-27 19:51:47,440 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:47,443 INFO L225 Difference]: With dead ends: 335 [2020-10-27 19:51:47,443 INFO L226 Difference]: Without dead ends: 330 [2020-10-27 19:51:47,448 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 41 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 229 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 19:51:47,450 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 330 states. [2020-10-27 19:51:47,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 330 to 292. [2020-10-27 19:51:47,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:51:47,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 355 transitions. [2020-10-27 19:51:47,533 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 355 transitions. Word has length 42 [2020-10-27 19:51:47,534 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:47,534 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 355 transitions. [2020-10-27 19:51:47,534 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:51:47,534 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 355 transitions. [2020-10-27 19:51:47,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-10-27 19:51:47,538 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:47,538 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:47,538 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-27 19:51:47,538 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:47,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:47,540 INFO L82 PathProgramCache]: Analyzing trace with hash 1056603810, now seen corresponding path program 1 times [2020-10-27 19:51:47,540 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:47,541 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1094460289] [2020-10-27 19:51:47,541 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:47,588 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:47,610 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:48,514 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:48,515 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 65 [2020-10-27 19:51:48,515 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:48,515 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 924 [2020-10-27 19:51:48,515 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:48,515 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 20 [2020-10-27 19:51:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:48,516 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 52 [2020-10-27 19:51:48,516 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:48,659 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:48,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:48,666 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:48,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:48,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:48,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:48,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:51:48,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:48,679 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:48,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:48,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:48,708 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:48,730 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:48,748 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:49,015 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:49,016 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:49,016 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:49,016 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 283 [2020-10-27 19:51:49,016 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:49,016 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:49,017 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:49,017 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:49,087 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:49,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:49,109 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:49,300 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:49,300 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:49,300 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:49,300 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 198 [2020-10-27 19:51:49,301 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:49,301 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:49,301 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:49,599 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:49,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:49,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:49,714 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:49,715 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:49,715 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:49,717 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 100 [2020-10-27 19:51:49,717 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:49,717 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:49,718 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:49,718 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:49,800 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:49,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:49,809 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:49,829 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:49,830 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:49,830 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:49,830 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:51:49,830 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:49,830 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:49,831 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:49,831 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:49,919 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:49,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1094460289] [2020-10-27 19:51:49,920 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:49,920 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-10-27 19:51:49,920 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [392285423] [2020-10-27 19:51:49,921 INFO L461 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-10-27 19:51:49,921 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:49,922 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-10-27 19:51:49,922 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=268, Unknown=0, NotChecked=0, Total=306 [2020-10-27 19:51:49,922 INFO L87 Difference]: Start difference. First operand 292 states and 355 transitions. Second operand 18 states. [2020-10-27 19:51:53,660 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:51:53,660 INFO L93 Difference]: Finished difference Result 329 states and 396 transitions. [2020-10-27 19:51:53,661 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-27 19:51:53,661 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 45 [2020-10-27 19:51:53,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:51:53,664 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:51:53,665 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:51:53,666 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 34 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 165 ImplicationChecksByTransitivity, 1.6s TimeCoverageRelationStatistics Valid=200, Invalid=1060, Unknown=0, NotChecked=0, Total=1260 [2020-10-27 19:51:53,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:51:53,705 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 19:51:53,705 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:51:53,708 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 354 transitions. [2020-10-27 19:51:53,708 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 354 transitions. Word has length 45 [2020-10-27 19:51:53,709 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:51:53,709 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 354 transitions. [2020-10-27 19:51:53,709 INFO L482 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-10-27 19:51:53,709 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 354 transitions. [2020-10-27 19:51:53,720 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-10-27 19:51:53,720 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:51:53,720 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:51:53,721 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-27 19:51:53,721 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:51:53,722 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:51:53,722 INFO L82 PathProgramCache]: Analyzing trace with hash 1810679932, now seen corresponding path program 1 times [2020-10-27 19:51:53,722 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:51:53,723 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [379550661] [2020-10-27 19:51:53,723 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:51:53,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:53,771 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:54,572 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:54,572 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 68 [2020-10-27 19:51:54,573 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:54,573 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 819 [2020-10-27 19:51:54,573 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:54,573 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:51:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:51:54,574 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 55 [2020-10-27 19:51:54,574 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:54,741 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:51:54,745 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:54,749 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:54,759 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:54,759 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:54,759 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:54,760 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:51:54,760 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:54,760 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:51:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:54,761 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:51:54,761 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:51:54,805 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:51:54,820 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:54,836 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:55,120 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:55,120 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:51:55,120 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 299 [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:51:55,121 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:55,232 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:55,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:55,253 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:55,497 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 253 [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:51:55,498 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:55,499 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:51:55,499 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:55,775 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:51:55,785 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:55,794 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:55,946 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:55,947 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:51:55,947 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:55,947 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 161 [2020-10-27 19:51:55,947 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:51:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:51:55,948 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:51:55,948 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:51:56,129 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:51:56,136 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:51:56,142 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:51:56,181 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:51:56,181 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:51:56,181 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:51:56,182 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 44 [2020-10-27 19:51:56,182 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:51:56,182 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:51:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:51:56,183 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:51:56,184 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 1 [2020-10-27 19:51:56,374 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:51:56,374 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [379550661] [2020-10-27 19:51:56,376 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:51:56,377 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:51:56,377 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [543772693] [2020-10-27 19:51:56,378 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:51:56,378 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:51:56,379 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:51:56,379 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=301, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:51:56,380 INFO L87 Difference]: Start difference. First operand 292 states and 354 transitions. Second operand 19 states. [2020-10-27 19:52:00,666 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:00,666 INFO L93 Difference]: Finished difference Result 329 states and 395 transitions. [2020-10-27 19:52:00,667 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-10-27 19:52:00,667 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 48 [2020-10-27 19:52:00,668 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:00,670 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:52:00,670 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:52:00,671 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 210 ImplicationChecksByTransitivity, 1.9s TimeCoverageRelationStatistics Valid=189, Invalid=1217, Unknown=0, NotChecked=0, Total=1406 [2020-10-27 19:52:00,672 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:52:00,708 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 292. [2020-10-27 19:52:00,708 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:52:00,713 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 353 transitions. [2020-10-27 19:52:00,714 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 353 transitions. Word has length 48 [2020-10-27 19:52:00,714 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:00,714 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 353 transitions. [2020-10-27 19:52:00,714 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:52:00,714 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 353 transitions. [2020-10-27 19:52:00,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-10-27 19:52:00,716 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:00,717 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:00,717 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-27 19:52:00,717 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:00,718 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:00,718 INFO L82 PathProgramCache]: Analyzing trace with hash 448613391, now seen corresponding path program 1 times [2020-10-27 19:52:00,718 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:00,718 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1069882780] [2020-10-27 19:52:00,718 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:00,793 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:00,821 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:01,041 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:03,028 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:03,029 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 71 [2020-10-27 19:52:03,029 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 2 [2020-10-27 19:52:03,029 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2234 [2020-10-27 19:52:03,029 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:03,029 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 24 [2020-10-27 19:52:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:03,030 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 58 [2020-10-27 19:52:03,030 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:03,370 WARN L193 SmtUtils]: Spent 131.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 31 [2020-10-27 19:52:03,526 WARN L193 SmtUtils]: Spent 140.00 ms on a formula simplification. DAG size of input: 54 DAG size of output: 35 [2020-10-27 19:52:03,724 WARN L193 SmtUtils]: Spent 180.00 ms on a formula simplification. DAG size of input: 45 DAG size of output: 29 [2020-10-27 19:52:04,005 WARN L193 SmtUtils]: Spent 247.00 ms on a formula simplification. DAG size of input: 56 DAG size of output: 35 [2020-10-27 19:52:04,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:04,223 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:04,226 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:04,235 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:04,235 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:04,235 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:04,235 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:52:04,235 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:04,236 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:04,236 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:04,271 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:04,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:04,320 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:04,788 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:04,788 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:04,789 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:04,789 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 485 [2020-10-27 19:52:04,789 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 14 [2020-10-27 19:52:04,789 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:04,790 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:04,790 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:05,257 WARN L193 SmtUtils]: Spent 276.00 ms on a formula simplification. DAG size of input: 85 DAG size of output: 41 [2020-10-27 19:52:05,258 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:05,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:05,328 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:05,673 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:05,673 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:05,673 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:05,674 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 367 [2020-10-27 19:52:05,674 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 12 [2020-10-27 19:52:05,674 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:05,675 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:05,675 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:07,312 WARN L193 SmtUtils]: Spent 1.25 s on a formula simplification. DAG size of input: 203 DAG size of output: 83 [2020-10-27 19:52:07,428 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:07,459 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:07,485 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:07,678 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:07,679 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:07,679 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:07,679 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 218 [2020-10-27 19:52:07,679 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:07,680 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:07,680 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:08,214 WARN L193 SmtUtils]: Spent 325.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 74 [2020-10-27 19:52:08,215 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:08,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:08,244 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:08,306 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:08,306 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:08,306 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:08,306 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 77 [2020-10-27 19:52:08,307 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:08,307 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:08,307 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:09,246 WARN L193 SmtUtils]: Spent 785.00 ms on a formula simplification. DAG size of input: 102 DAG size of output: 86 [2020-10-27 19:52:09,301 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:09,302 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1069882780] [2020-10-27 19:52:09,302 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:09,302 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-10-27 19:52:09,303 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1149663859] [2020-10-27 19:52:09,304 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-27 19:52:09,304 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:09,304 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-27 19:52:09,305 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=409, Unknown=0, NotChecked=0, Total=462 [2020-10-27 19:52:09,305 INFO L87 Difference]: Start difference. First operand 292 states and 353 transitions. Second operand 22 states. [2020-10-27 19:52:10,378 WARN L193 SmtUtils]: Spent 268.00 ms on a formula simplification that was a NOOP. DAG size: 115 [2020-10-27 19:52:10,702 WARN L193 SmtUtils]: Spent 223.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 19:52:10,965 WARN L193 SmtUtils]: Spent 190.00 ms on a formula simplification that was a NOOP. DAG size: 102 [2020-10-27 19:52:11,271 WARN L193 SmtUtils]: Spent 171.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 19:52:11,873 WARN L193 SmtUtils]: Spent 139.00 ms on a formula simplification that was a NOOP. DAG size: 119 [2020-10-27 19:52:12,368 WARN L193 SmtUtils]: Spent 352.00 ms on a formula simplification. DAG size of input: 131 DAG size of output: 128 [2020-10-27 19:52:12,718 WARN L193 SmtUtils]: Spent 285.00 ms on a formula simplification. DAG size of input: 125 DAG size of output: 116 [2020-10-27 19:52:12,921 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 112 [2020-10-27 19:52:13,152 WARN L193 SmtUtils]: Spent 136.00 ms on a formula simplification that was a NOOP. DAG size: 118 [2020-10-27 19:52:13,333 WARN L193 SmtUtils]: Spent 110.00 ms on a formula simplification that was a NOOP. DAG size: 107 [2020-10-27 19:52:13,526 WARN L193 SmtUtils]: Spent 116.00 ms on a formula simplification that was a NOOP. DAG size: 114 [2020-10-27 19:52:16,678 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:16,678 INFO L93 Difference]: Finished difference Result 323 states and 386 transitions. [2020-10-27 19:52:16,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 26 states. [2020-10-27 19:52:16,680 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 51 [2020-10-27 19:52:16,680 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:16,699 INFO L225 Difference]: With dead ends: 323 [2020-10-27 19:52:16,700 INFO L226 Difference]: Without dead ends: 318 [2020-10-27 19:52:16,701 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 1 SemanticMatches, 39 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 231 ImplicationChecksByTransitivity, 7.6s TimeCoverageRelationStatistics Valid=275, Invalid=1365, Unknown=0, NotChecked=0, Total=1640 [2020-10-27 19:52:16,702 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 318 states. [2020-10-27 19:52:16,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 318 to 292. [2020-10-27 19:52:16,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 292 states. [2020-10-27 19:52:16,756 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 292 states to 292 states and 352 transitions. [2020-10-27 19:52:16,757 INFO L78 Accepts]: Start accepts. Automaton has 292 states and 352 transitions. Word has length 51 [2020-10-27 19:52:16,758 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:16,758 INFO L481 AbstractCegarLoop]: Abstraction has 292 states and 352 transitions. [2020-10-27 19:52:16,758 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-27 19:52:16,758 INFO L276 IsEmpty]: Start isEmpty. Operand 292 states and 352 transitions. [2020-10-27 19:52:16,761 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-10-27 19:52:16,761 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:16,761 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:16,761 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-27 19:52:16,762 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:16,762 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:16,762 INFO L82 PathProgramCache]: Analyzing trace with hash -1445890676, now seen corresponding path program 1 times [2020-10-27 19:52:16,762 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:16,763 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1957631557] [2020-10-27 19:52:16,763 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:16,790 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:16,808 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:17,411 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:17,411 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 74 [2020-10-27 19:52:17,411 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 619 [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 21 [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:52:17,412 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:17,608 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:17,612 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:17,615 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:17,623 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:17,624 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:17,624 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:17,624 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 10 [2020-10-27 19:52:17,624 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:17,624 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:17,625 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:17,625 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:17,669 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:17,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:17,695 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:17,927 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:17,927 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:17,927 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:17,927 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 241 [2020-10-27 19:52:17,927 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:17,928 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:17,928 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,037 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:18,047 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:18,056 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:18,228 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:18,228 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:18,228 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:18,228 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 179 [2020-10-27 19:52:18,228 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:18,229 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:18,229 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,443 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:18,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:18,457 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:18,537 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:18,537 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:18,538 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:18,538 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 86 [2020-10-27 19:52:18,538 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:18,538 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:18,539 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:18,539 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,661 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:18,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:18,674 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:18,693 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:18,694 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:18,694 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:18,694 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:52:18,694 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:18,694 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:18,695 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:18,695 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:18,808 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:18,809 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1957631557] [2020-10-27 19:52:18,809 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:18,809 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-10-27 19:52:18,809 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [433066978] [2020-10-27 19:52:18,810 INFO L461 AbstractCegarLoop]: Interpolant automaton has 19 states [2020-10-27 19:52:18,810 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:18,811 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 19 interpolants. [2020-10-27 19:52:18,811 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=300, Unknown=0, NotChecked=0, Total=342 [2020-10-27 19:52:18,811 INFO L87 Difference]: Start difference. First operand 292 states and 352 transitions. Second operand 19 states. [2020-10-27 19:52:23,488 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:23,488 INFO L93 Difference]: Finished difference Result 334 states and 399 transitions. [2020-10-27 19:52:23,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 29 states. [2020-10-27 19:52:23,489 INFO L78 Accepts]: Start accepts. Automaton has 19 states. Word has length 54 [2020-10-27 19:52:23,490 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:23,492 INFO L225 Difference]: With dead ends: 334 [2020-10-27 19:52:23,492 INFO L226 Difference]: Without dead ends: 329 [2020-10-27 19:52:23,493 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 276 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=273, Invalid=1449, Unknown=0, NotChecked=0, Total=1722 [2020-10-27 19:52:23,494 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 329 states. [2020-10-27 19:52:23,527 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 329 to 300. [2020-10-27 19:52:23,527 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 19:52:23,529 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 359 transitions. [2020-10-27 19:52:23,529 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 359 transitions. Word has length 54 [2020-10-27 19:52:23,530 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:23,530 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 359 transitions. [2020-10-27 19:52:23,530 INFO L482 AbstractCegarLoop]: Interpolant automaton has 19 states. [2020-10-27 19:52:23,530 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 359 transitions. [2020-10-27 19:52:23,531 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-27 19:52:23,531 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:23,531 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:23,531 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-27 19:52:23,531 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:23,532 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:23,532 INFO L82 PathProgramCache]: Analyzing trace with hash 1452185530, now seen corresponding path program 1 times [2020-10-27 19:52:23,532 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:23,532 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2102979651] [2020-10-27 19:52:23,532 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:23,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:23,581 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:24,237 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:24,237 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 77 [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 676 [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 22 [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:24,238 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 64 [2020-10-27 19:52:24,239 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:24,447 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:24,453 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:24,455 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:24,469 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:24,469 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:24,469 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:24,469 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:52:24,469 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:24,470 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:24,470 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:24,511 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:24,525 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:24,535 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:24,817 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:24,817 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 34 [2020-10-27 19:52:24,817 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:24,817 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 291 [2020-10-27 19:52:24,817 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:24,818 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 34 [2020-10-27 19:52:24,818 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:24,948 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:24,957 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:24,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:25,169 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 211 [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:25,170 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:25,171 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:25,171 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:25,476 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:25,483 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:25,490 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:25,583 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 99 [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:25,584 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:25,585 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:25,585 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:25,707 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:25,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:25,717 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:25,736 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:25,737 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:25,737 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:25,737 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 23 [2020-10-27 19:52:25,738 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:25,738 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:25,738 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:25,866 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-27 19:52:25,867 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2102979651] [2020-10-27 19:52:25,867 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-27 19:52:25,867 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-10-27 19:52:25,867 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1367286579] [2020-10-27 19:52:25,868 INFO L461 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-10-27 19:52:25,868 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:25,869 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-10-27 19:52:25,869 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=43, Invalid=337, Unknown=0, NotChecked=0, Total=380 [2020-10-27 19:52:25,869 INFO L87 Difference]: Start difference. First operand 300 states and 359 transitions. Second operand 20 states. [2020-10-27 19:52:28,306 WARN L193 SmtUtils]: Spent 102.00 ms on a formula simplification that was a NOOP. DAG size: 91 [2020-10-27 19:52:31,224 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:31,225 INFO L93 Difference]: Finished difference Result 329 states and 391 transitions. [2020-10-27 19:52:31,226 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 27 states. [2020-10-27 19:52:31,226 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 57 [2020-10-27 19:52:31,227 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:31,230 INFO L225 Difference]: With dead ends: 329 [2020-10-27 19:52:31,230 INFO L226 Difference]: Without dead ends: 324 [2020-10-27 19:52:31,231 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 5 SyntacticMatches, 1 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 205 ImplicationChecksByTransitivity, 2.3s TimeCoverageRelationStatistics Valid=223, Invalid=1337, Unknown=0, NotChecked=0, Total=1560 [2020-10-27 19:52:31,232 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 324 states. [2020-10-27 19:52:31,284 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 324 to 300. [2020-10-27 19:52:31,285 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 300 states. [2020-10-27 19:52:31,287 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 300 states to 300 states and 358 transitions. [2020-10-27 19:52:31,287 INFO L78 Accepts]: Start accepts. Automaton has 300 states and 358 transitions. Word has length 57 [2020-10-27 19:52:31,287 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:31,287 INFO L481 AbstractCegarLoop]: Abstraction has 300 states and 358 transitions. [2020-10-27 19:52:31,288 INFO L482 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-10-27 19:52:31,288 INFO L276 IsEmpty]: Start isEmpty. Operand 300 states and 358 transitions. [2020-10-27 19:52:31,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 64 [2020-10-27 19:52:31,288 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:31,289 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:31,289 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-10-27 19:52:31,289 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:31,290 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:31,290 INFO L82 PathProgramCache]: Analyzing trace with hash 1930027834, now seen corresponding path program 1 times [2020-10-27 19:52:31,290 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:31,290 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1584906244] [2020-10-27 19:52:31,290 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:31,324 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:31,351 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:33,770 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:33,770 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 89 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 2444 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 33 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 5 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 76 [2020-10-27 19:52:33,771 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:33,958 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-27 19:52:33,961 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:33,964 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:33,978 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:33,978 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:33,978 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:33,978 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 15 [2020-10-27 19:52:33,978 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 2 [2020-10-27 19:52:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:33,979 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 2 [2020-10-27 19:52:33,979 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:34,013 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 5 [2020-10-27 19:52:34,049 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:34,082 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:35,413 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:35,413 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 61 [2020-10-27 19:52:35,413 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 1363 [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 28 [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 61 [2020-10-27 19:52:35,414 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:35,603 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:35,613 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:35,621 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:35,758 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:35,758 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:35,758 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:35,758 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 144 [2020-10-27 19:52:35,758 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 13 [2020-10-27 19:52:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:35,759 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:35,759 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:36,062 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:36,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:36,075 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:36,146 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:36,146 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:36,146 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:36,146 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 75 [2020-10-27 19:52:36,147 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 8 [2020-10-27 19:52:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:36,147 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:36,147 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:36,262 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:36,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:36,270 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:36,280 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:36,280 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:36,280 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:36,280 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 13 [2020-10-27 19:52:36,280 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 4 [2020-10-27 19:52:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 1 [2020-10-27 19:52:36,281 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 6 [2020-10-27 19:52:36,281 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:36,329 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 22 [2020-10-27 19:52:36,336 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:36,343 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:36,543 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:36,543 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 25 [2020-10-27 19:52:36,543 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:36,543 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 205 [2020-10-27 19:52:36,543 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 15 [2020-10-27 19:52:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:36,544 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 25 [2020-10-27 19:52:36,544 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:36,748 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 3 [2020-10-27 19:52:36,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:36,758 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:36,823 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:36,823 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 15 [2020-10-27 19:52:36,823 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:36,823 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 68 [2020-10-27 19:52:36,823 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 10 [2020-10-27 19:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:36,824 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 15 [2020-10-27 19:52:36,824 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:36,959 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 1 [2020-10-27 19:52:36,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-27 19:52:36,966 FATAL L256 erpolLogProxyWrapper]: Now shrinking... [2020-10-27 19:52:36,986 FATAL L256 erpolLogProxyWrapper]: Timeout: 5000 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Cardinality of Constraint set: 8 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Number of enumerated Muses: 1 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Time needed for enumeration: 22 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Heuristic: DEEPEST [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has size: 6 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has depth: 0 [2020-10-27 19:52:36,987 FATAL L256 erpolLogProxyWrapper]: Chosen Mus has width: 8 [2020-10-27 19:52:36,988 FATAL L256 erpolLogProxyWrapper]: Time needed for Heuristics: 0 [2020-10-27 19:52:37,176 INFO L134 CoverageAnalysis]: Checked inductivity of 21 backedges. 0 proven. 18 refuted. 0 times theorem prover too weak. 3 trivial. 0 not checked. [2020-10-27 19:52:37,177 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1584906244] [2020-10-27 19:52:37,177 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-10-27 19:52:37,177 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [26] total 26 [2020-10-27 19:52:37,177 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [55835092] [2020-10-27 19:52:37,178 INFO L461 AbstractCegarLoop]: Interpolant automaton has 27 states [2020-10-27 19:52:37,178 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-10-27 19:52:37,179 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 27 interpolants. [2020-10-27 19:52:37,179 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=90, Invalid=612, Unknown=0, NotChecked=0, Total=702 [2020-10-27 19:52:37,179 INFO L87 Difference]: Start difference. First operand 300 states and 358 transitions. Second operand 27 states. [2020-10-27 19:52:37,841 WARN L193 SmtUtils]: Spent 146.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 72 [2020-10-27 19:52:38,341 WARN L193 SmtUtils]: Spent 109.00 ms on a formula simplification that was a NOOP. DAG size: 90 [2020-10-27 19:52:39,006 WARN L193 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 69 DAG size of output: 56 [2020-10-27 19:52:39,182 WARN L193 SmtUtils]: Spent 118.00 ms on a formula simplification. DAG size of input: 76 DAG size of output: 63 [2020-10-27 19:52:39,483 WARN L193 SmtUtils]: Spent 138.00 ms on a formula simplification. DAG size of input: 84 DAG size of output: 71 [2020-10-27 19:52:39,905 WARN L193 SmtUtils]: Spent 168.00 ms on a formula simplification. DAG size of input: 93 DAG size of output: 76 [2020-10-27 19:52:40,193 WARN L193 SmtUtils]: Spent 103.00 ms on a formula simplification that was a NOOP. DAG size: 82 [2020-10-27 19:52:40,398 WARN L193 SmtUtils]: Spent 154.00 ms on a formula simplification. DAG size of input: 87 DAG size of output: 74 [2020-10-27 19:52:40,641 WARN L193 SmtUtils]: Spent 120.00 ms on a formula simplification that was a NOOP. DAG size: 100 [2020-10-27 19:52:41,840 WARN L193 SmtUtils]: Spent 117.00 ms on a formula simplification. DAG size of input: 64 DAG size of output: 60 [2020-10-27 19:52:46,244 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-27 19:52:46,245 INFO L93 Difference]: Finished difference Result 464 states and 554 transitions. [2020-10-27 19:52:46,249 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 40 states. [2020-10-27 19:52:46,250 INFO L78 Accepts]: Start accepts. Automaton has 27 states. Word has length 63 [2020-10-27 19:52:46,250 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-27 19:52:46,253 INFO L225 Difference]: With dead ends: 464 [2020-10-27 19:52:46,253 INFO L226 Difference]: Without dead ends: 459 [2020-10-27 19:52:46,255 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 59 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 749 ImplicationChecksByTransitivity, 4.9s TimeCoverageRelationStatistics Valid=524, Invalid=3136, Unknown=0, NotChecked=0, Total=3660 [2020-10-27 19:52:46,256 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 459 states. [2020-10-27 19:52:46,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 459 to 417. [2020-10-27 19:52:46,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 417 states. [2020-10-27 19:52:46,307 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 417 states to 417 states and 503 transitions. [2020-10-27 19:52:46,308 INFO L78 Accepts]: Start accepts. Automaton has 417 states and 503 transitions. Word has length 63 [2020-10-27 19:52:46,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-27 19:52:46,308 INFO L481 AbstractCegarLoop]: Abstraction has 417 states and 503 transitions. [2020-10-27 19:52:46,308 INFO L482 AbstractCegarLoop]: Interpolant automaton has 27 states. [2020-10-27 19:52:46,308 INFO L276 IsEmpty]: Start isEmpty. Operand 417 states and 503 transitions. [2020-10-27 19:52:46,309 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 61 [2020-10-27 19:52:46,309 INFO L414 BasicCegarLoop]: Found error trace [2020-10-27 19:52:46,310 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-27 19:52:46,310 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-27 19:52:46,310 INFO L429 AbstractCegarLoop]: === Iteration 11 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-27 19:52:46,310 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-27 19:52:46,311 INFO L82 PathProgramCache]: Analyzing trace with hash 1537962617, now seen corresponding path program 1 times [2020-10-27 19:52:46,311 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-10-27 19:52:46,311 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [47195547] [2020-10-27 19:52:46,311 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-27 19:52:46,337 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-27 19:52:46,339 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-10-27 19:52:46,339 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-27 19:52:46,343 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-10-27 19:52:46,362 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.10 07:52:46 BoogieIcfgContainer [2020-10-27 19:52:46,363 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-27 19:52:46,364 INFO L168 Benchmark]: Toolchain (without parser) took 77830.75 ms. Allocated memory was 152.0 MB in the beginning and 512.8 MB in the end (delta: 360.7 MB). Free memory was 126.0 MB in the beginning and 386.5 MB in the end (delta: -260.5 MB). Peak memory consumption was 100.6 MB. Max. memory is 8.0 GB. [2020-10-27 19:52:46,365 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-27 19:52:46,366 INFO L168 Benchmark]: CACSL2BoogieTranslator took 1159.08 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 109.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. [2020-10-27 19:52:46,366 INFO L168 Benchmark]: Boogie Preprocessor took 110.19 ms. Allocated memory is still 152.0 MB. Free memory was 109.1 MB in the beginning and 104.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:52:46,367 INFO L168 Benchmark]: RCFGBuilder took 1187.19 ms. Allocated memory is still 152.0 MB. Free memory was 104.3 MB in the beginning and 102.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 8.0 GB. [2020-10-27 19:52:46,368 INFO L168 Benchmark]: TraceAbstraction took 75362.77 ms. Allocated memory was 152.0 MB in the beginning and 512.8 MB in the end (delta: 360.7 MB). Free memory was 102.8 MB in the beginning and 386.5 MB in the end (delta: -283.7 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. [2020-10-27 19:52:46,371 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 152.0 MB. Free memory is still 124.4 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 1159.08 ms. Allocated memory is still 152.0 MB. Free memory was 125.4 MB in the beginning and 109.1 MB in the end (delta: 16.4 MB). Peak memory consumption was 28.9 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 110.19 ms. Allocated memory is still 152.0 MB. Free memory was 109.1 MB in the beginning and 104.3 MB in the end (delta: 4.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 1187.19 ms. Allocated memory is still 152.0 MB. Free memory was 104.3 MB in the beginning and 102.8 MB in the end (delta: 1.5 MB). Peak memory consumption was 60.2 MB. Max. memory is 8.0 GB. * TraceAbstraction took 75362.77 ms. Allocated memory was 152.0 MB in the beginning and 512.8 MB in the end (delta: 360.7 MB). Free memory was 102.8 MB in the beginning and 386.5 MB in the end (delta: -283.7 MB). Peak memory consumption was 76.5 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L850] struct list_head gl_list = { &(gl_list), &(gl_list) }; [L949] CALL gl_read() [L909] CALL gl_insert(__VERIFIER_nondet_int()) [L899] struct node *node = malloc(sizeof *node); [L900] COND FALSE !(!node) [L902] node->value = value [L903] CALL list_add(&node->linkage, &gl_list) [L890] EXPR head->next [L890] CALL __list_add(new, head, head->next) [L878] next->prev = new [L879] new->next = next [L880] new->prev = prev [L881] prev->next = new [L890] RET __list_add(new, head, head->next) [L903] RET list_add(&node->linkage, &gl_list) [L904] (&node->nested)->next = (&node->nested) [L904] (&node->nested)->next = (&node->nested) [L909] RET gl_insert(__VERIFIER_nondet_int()) [L911] COND FALSE !(__VERIFIER_nondet_int()) [L949] RET gl_read() [L950] CALL inspect(&gl_list) [L853] COND FALSE !(!(head)) [L854] EXPR head->next [L854] COND FALSE !(!(head->next != head)) [L855] EXPR head->prev [L855] COND FALSE !(!(head->prev != head)) [L856] EXPR head->prev [L856] head = head->prev [L857] COND FALSE !(!(head)) [L858] EXPR head->next [L858] COND FALSE !(!(head->next != head)) [L859] EXPR head->prev [L859] COND FALSE !(!(head->prev != head)) [L860] const struct node *node = ((struct node *)((char *)(head)-(unsigned long)(&((struct node *)0)->linkage))); [L861] COND FALSE !(!(node)) [L862] EXPR node->nested.next [L862] COND FALSE !(!(node->nested.next == &node->nested)) [L863] EXPR node->nested.prev [L863] COND TRUE !(node->nested.prev == &node->nested) [L863] CALL fail() [L840] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "bubble_sort_linux-2.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 18 procedures, 156 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 75.2s, OverallIterations: 11, TraceHistogramMax: 2, AutomataDifference: 44.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1065 SDtfs, 8181 SDslu, 1420 SDs, 0 SdLazy, 17284 SolverSat, 2997 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 22.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 397 GetRequests, 64 SyntacticMatches, 3 SemanticMatches, 330 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2202 ImplicationChecksByTransitivity, 25.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=417occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.5s AutomataMinimizationTime, 10 MinimizatonAttempts, 290 StatesRemovedByMinimization, 10 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 29.1s InterpolantComputationTime, 511 NumberOfCodeBlocks, 511 NumberOfCodeBlocksAsserted, 11 NumberOfCheckSat, 441 ConstructedInterpolants, 0 QuantifiedInterpolants, 663760 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 10 InterpolantComputations, 9 PerfectInterpolantSequences, 3/21 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...