/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml --traceabstraction.compute.interpolants.along.a.counterexample Craig_NestedInterpolation --traceabstraction.use.separate.solver.for.trace.checks true -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-01-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 17:28:20,078 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 17:28:20,081 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 17:28:20,099 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 17:28:20,099 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 17:28:20,101 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 17:28:20,103 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 17:28:20,113 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 17:28:20,117 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 17:28:20,120 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 17:28:20,121 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 17:28:20,122 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 17:28:20,123 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 17:28:20,123 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 17:28:20,125 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 17:28:20,126 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 17:28:20,128 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 17:28:20,129 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 17:28:20,131 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 17:28:20,136 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 17:28:20,141 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 17:28:20,144 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 17:28:20,145 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 17:28:20,146 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 17:28:20,149 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 17:28:20,149 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 17:28:20,149 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 17:28:20,152 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 17:28:20,152 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 17:28:20,154 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 17:28:20,154 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 17:28:20,155 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 17:28:20,156 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 17:28:20,156 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 17:28:20,157 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 17:28:20,158 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 17:28:20,158 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 17:28:20,158 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 17:28:20,159 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 17:28:20,159 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 17:28:20,160 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 17:28:20,161 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 17:28:20,175 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 17:28:20,176 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 17:28:20,177 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 17:28:20,177 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 17:28:20,178 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 17:28:20,178 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 17:28:20,178 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 17:28:20,178 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 17:28:20,178 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 17:28:20,179 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 17:28:20,180 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 17:28:20,180 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 17:28:20,180 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 17:28:20,180 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 17:28:20,181 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 17:28:20,181 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 17:28:20,181 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 17:28:20,181 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 17:28:20,181 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 17:28:20,182 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 17:28:20,182 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 17:28:20,182 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 17:28:20,182 INFO L138 SettingsManager]: * Use separate solver for trace checks=false 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: Use separate solver for trace checks -> true [2020-07-17 17:28:20,436 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 17:28:20,450 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 17:28:20,453 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 17:28:20,454 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 17:28:20,455 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 17:28:20,455 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-17 17:28:20,528 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012a99b6b/930906ec505846b28880e60e16286402/FLAGd4b30211a [2020-07-17 17:28:21,042 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 17:28:21,044 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-01-2.i [2020-07-17 17:28:21,062 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012a99b6b/930906ec505846b28880e60e16286402/FLAGd4b30211a [2020-07-17 17:28:21,372 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/012a99b6b/930906ec505846b28880e60e16286402 [2020-07-17 17:28:21,380 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 17:28:21,384 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 17:28:21,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:21,385 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 17:28:21,388 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 17:28:21,389 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:21" (1/1) ... [2020-07-17 17:28:21,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@614f8a73 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:21, skipping insertion in model container [2020-07-17 17:28:21,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 05:28:21" (1/1) ... [2020-07-17 17:28:21,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 17:28:21,465 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 17:28:21,894 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:21,906 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 17:28:21,953 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 17:28:22,012 INFO L208 MainTranslator]: Completed translation [2020-07-17 17:28:22,013 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22 WrapperNode [2020-07-17 17:28:22,013 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 17:28:22,014 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 17:28:22,014 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 17:28:22,014 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 17:28:22,027 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,027 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,049 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,049 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,068 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,080 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,086 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... [2020-07-17 17:28:22,095 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 17:28:22,096 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 17:28:22,096 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 17:28:22,096 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 17:28:22,097 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/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 [2020-07-17 17:28:22,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 17:28:22,151 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 17:28:22,151 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 17:28:22,151 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 17:28:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 17:28:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 17:28:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 17:28:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 17:28:22,152 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 17:28:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 17:28:22,153 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 17:28:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 17:28:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 17:28:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 17:28:22,154 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 17:28:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 17:28:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 17:28:22,155 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 17:28:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 17:28:22,156 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 17:28:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 17:28:22,157 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 17:28:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 17:28:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 17:28:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 17:28:22,159 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 17:28:22,160 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 17:28:22,161 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 17:28:22,162 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 17:28:22,163 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 17:28:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 17:28:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 17:28:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 17:28:22,164 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 17:28:22,165 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 17:28:22,166 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 17:28:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 17:28:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 17:28:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 17:28:22,167 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 17:28:22,168 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 17:28:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 17:28:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 17:28:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 17:28:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 17:28:22,169 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 17:28:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 17:28:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 17:28:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 17:28:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 17:28:22,170 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 17:28:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 17:28:22,171 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 17:28:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 17:28:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 17:28:22,172 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 17:28:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 17:28:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 17:28:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 17:28:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 17:28:22,173 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 17:28:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 17:28:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 17:28:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 17:28:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 17:28:22,174 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 17:28:22,175 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 17:28:22,176 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 17:28:22,177 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 17:28:22,870 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 17:28:22,870 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-07-17 17:28:22,876 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:22 BoogieIcfgContainer [2020-07-17 17:28:22,876 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 17:28:22,877 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 17:28:22,878 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 17:28:22,881 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 17:28:22,881 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 05:28:21" (1/3) ... [2020-07-17 17:28:22,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2153f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:22, skipping insertion in model container [2020-07-17 17:28:22,882 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 05:28:22" (2/3) ... [2020-07-17 17:28:22,882 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2153f53b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 05:28:22, skipping insertion in model container [2020-07-17 17:28:22,883 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 05:28:22" (3/3) ... [2020-07-17 17:28:22,884 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-01-2.i [2020-07-17 17:28:22,895 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 17:28:22,903 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-07-17 17:28:22,917 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-07-17 17:28:22,939 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 17:28:22,940 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 17:28:22,940 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-07-17 17:28:22,940 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 17:28:22,940 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 17:28:22,940 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 17:28:22,941 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 17:28:22,941 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 17:28:22,965 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-07-17 17:28:22,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-07-17 17:28:22,978 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:22,979 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:22,980 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:22,990 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:22,990 INFO L82 PathProgramCache]: Analyzing trace with hash 885652866, now seen corresponding path program 1 times [2020-07-17 17:28:23,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:23,001 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [998352501] [2020-07-17 17:28:23,001 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:23,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:23,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:23,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:23,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [998352501] [2020-07-17 17:28:23,243 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:23,244 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 17:28:23,245 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1320201695] [2020-07-17 17:28:23,252 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 17:28:23,252 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:23,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 17:28:23,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 17:28:23,273 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-07-17 17:28:23,718 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:23,718 INFO L93 Difference]: Finished difference Result 360 states and 478 transitions. [2020-07-17 17:28:23,718 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 17:28:23,720 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 12 [2020-07-17 17:28:23,720 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:23,733 INFO L225 Difference]: With dead ends: 360 [2020-07-17 17:28:23,733 INFO L226 Difference]: Without dead ends: 194 [2020-07-17 17:28:23,739 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:23,759 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-07-17 17:28:23,798 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-07-17 17:28:23,800 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-07-17 17:28:23,802 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 174 transitions. [2020-07-17 17:28:23,808 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 174 transitions. Word has length 12 [2020-07-17 17:28:23,808 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:23,808 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 174 transitions. [2020-07-17 17:28:23,808 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 17:28:23,809 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 174 transitions. [2020-07-17 17:28:23,810 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2020-07-17 17:28:23,810 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:23,810 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] [2020-07-17 17:28:23,810 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 17:28:23,811 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:23,811 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:23,811 INFO L82 PathProgramCache]: Analyzing trace with hash 684663316, now seen corresponding path program 1 times [2020-07-17 17:28:23,812 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:23,812 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1792374565] [2020-07-17 17:28:23,812 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:23,832 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:23,868 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:23,875 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:23,875 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1792374565] [2020-07-17 17:28:23,875 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:23,876 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:23,876 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [870404150] [2020-07-17 17:28:23,877 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:23,878 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:23,878 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:23,878 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:23,878 INFO L87 Difference]: Start difference. First operand 164 states and 174 transitions. Second operand 4 states. [2020-07-17 17:28:24,126 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:24,127 INFO L93 Difference]: Finished difference Result 170 states and 180 transitions. [2020-07-17 17:28:24,127 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:24,127 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 24 [2020-07-17 17:28:24,128 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:24,129 INFO L225 Difference]: With dead ends: 170 [2020-07-17 17:28:24,130 INFO L226 Difference]: Without dead ends: 165 [2020-07-17 17:28:24,131 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:24,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-07-17 17:28:24,152 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-07-17 17:28:24,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-07-17 17:28:24,154 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 175 transitions. [2020-07-17 17:28:24,154 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 175 transitions. Word has length 24 [2020-07-17 17:28:24,155 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:24,155 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 175 transitions. [2020-07-17 17:28:24,155 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:24,155 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 175 transitions. [2020-07-17 17:28:24,156 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-07-17 17:28:24,156 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:24,157 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] [2020-07-17 17:28:24,157 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 17:28:24,157 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:24,157 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:24,158 INFO L82 PathProgramCache]: Analyzing trace with hash -265499727, now seen corresponding path program 1 times [2020-07-17 17:28:24,158 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:24,158 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [628444260] [2020-07-17 17:28:24,158 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:24,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:24,297 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:24,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:24,311 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [628444260] [2020-07-17 17:28:24,312 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:24,312 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:28:24,312 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238029714] [2020-07-17 17:28:24,313 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:28:24,313 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:24,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:28:24,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:24,314 INFO L87 Difference]: Start difference. First operand 165 states and 175 transitions. Second operand 8 states. [2020-07-17 17:28:24,825 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:24,825 INFO L93 Difference]: Finished difference Result 258 states and 275 transitions. [2020-07-17 17:28:24,826 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 17:28:24,826 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 26 [2020-07-17 17:28:24,826 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:24,833 INFO L225 Difference]: With dead ends: 258 [2020-07-17 17:28:24,833 INFO L226 Difference]: Without dead ends: 253 [2020-07-17 17:28:24,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:28:24,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-17 17:28:24,865 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 159. [2020-07-17 17:28:24,866 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-07-17 17:28:24,867 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 169 transitions. [2020-07-17 17:28:24,867 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 169 transitions. Word has length 26 [2020-07-17 17:28:24,867 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:24,867 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 169 transitions. [2020-07-17 17:28:24,867 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:28:24,868 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 169 transitions. [2020-07-17 17:28:24,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 17:28:24,869 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:24,869 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] [2020-07-17 17:28:24,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 17:28:24,872 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:24,872 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:24,872 INFO L82 PathProgramCache]: Analyzing trace with hash 72562886, now seen corresponding path program 1 times [2020-07-17 17:28:24,872 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:24,873 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [120506550] [2020-07-17 17:28:24,873 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:24,908 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:24,955 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:24,960 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:24,961 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [120506550] [2020-07-17 17:28:24,961 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:24,961 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:28:24,961 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3850241] [2020-07-17 17:28:24,962 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:28:24,962 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:24,962 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:28:24,962 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:24,963 INFO L87 Difference]: Start difference. First operand 159 states and 169 transitions. Second operand 6 states. [2020-07-17 17:28:25,313 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:25,314 INFO L93 Difference]: Finished difference Result 382 states and 407 transitions. [2020-07-17 17:28:25,314 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 17:28:25,315 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 32 [2020-07-17 17:28:25,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:25,316 INFO L225 Difference]: With dead ends: 382 [2020-07-17 17:28:25,316 INFO L226 Difference]: Without dead ends: 253 [2020-07-17 17:28:25,318 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:25,319 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-17 17:28:25,336 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 162. [2020-07-17 17:28:25,336 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-07-17 17:28:25,337 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 172 transitions. [2020-07-17 17:28:25,337 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 172 transitions. Word has length 32 [2020-07-17 17:28:25,337 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:25,337 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 172 transitions. [2020-07-17 17:28:25,338 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:28:25,338 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 172 transitions. [2020-07-17 17:28:25,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2020-07-17 17:28:25,339 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:25,339 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] [2020-07-17 17:28:25,339 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 17:28:25,339 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:25,340 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:25,340 INFO L82 PathProgramCache]: Analyzing trace with hash 972027235, now seen corresponding path program 1 times [2020-07-17 17:28:25,340 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:25,340 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1750432403] [2020-07-17 17:28:25,341 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:25,354 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:25,431 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:25,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:25,437 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1750432403] [2020-07-17 17:28:25,439 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:25,439 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-17 17:28:25,439 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1375588948] [2020-07-17 17:28:25,440 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-17 17:28:25,440 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:25,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-17 17:28:25,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-17 17:28:25,441 INFO L87 Difference]: Start difference. First operand 162 states and 172 transitions. Second operand 6 states. [2020-07-17 17:28:25,716 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:25,716 INFO L93 Difference]: Finished difference Result 271 states and 288 transitions. [2020-07-17 17:28:25,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-17 17:28:25,716 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 34 [2020-07-17 17:28:25,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:25,718 INFO L225 Difference]: With dead ends: 271 [2020-07-17 17:28:25,718 INFO L226 Difference]: Without dead ends: 239 [2020-07-17 17:28:25,719 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:25,720 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 239 states. [2020-07-17 17:28:25,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 239 to 161. [2020-07-17 17:28:25,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-07-17 17:28:25,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 171 transitions. [2020-07-17 17:28:25,736 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 171 transitions. Word has length 34 [2020-07-17 17:28:25,736 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:25,737 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 171 transitions. [2020-07-17 17:28:25,737 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-17 17:28:25,737 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 171 transitions. [2020-07-17 17:28:25,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-07-17 17:28:25,738 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:25,738 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] [2020-07-17 17:28:25,738 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 17:28:25,739 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:25,739 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:25,739 INFO L82 PathProgramCache]: Analyzing trace with hash -401575995, now seen corresponding path program 1 times [2020-07-17 17:28:25,739 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:25,739 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [155331108] [2020-07-17 17:28:25,740 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:25,753 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:25,799 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:25,803 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:25,804 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [155331108] [2020-07-17 17:28:25,804 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:25,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 17:28:25,804 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978969444] [2020-07-17 17:28:25,805 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:28:25,805 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:25,805 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:28:25,805 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:28:25,806 INFO L87 Difference]: Start difference. First operand 161 states and 171 transitions. Second operand 7 states. [2020-07-17 17:28:26,246 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:26,246 INFO L93 Difference]: Finished difference Result 245 states and 261 transitions. [2020-07-17 17:28:26,246 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:28:26,247 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 38 [2020-07-17 17:28:26,247 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:26,248 INFO L225 Difference]: With dead ends: 245 [2020-07-17 17:28:26,248 INFO L226 Difference]: Without dead ends: 241 [2020-07-17 17:28:26,249 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=49, Invalid=107, Unknown=0, NotChecked=0, Total=156 [2020-07-17 17:28:26,250 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 241 states. [2020-07-17 17:28:26,264 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 241 to 157. [2020-07-17 17:28:26,265 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 157 states. [2020-07-17 17:28:26,265 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 157 states to 157 states and 167 transitions. [2020-07-17 17:28:26,266 INFO L78 Accepts]: Start accepts. Automaton has 157 states and 167 transitions. Word has length 38 [2020-07-17 17:28:26,267 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:26,267 INFO L479 AbstractCegarLoop]: Abstraction has 157 states and 167 transitions. [2020-07-17 17:28:26,267 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:28:26,267 INFO L276 IsEmpty]: Start isEmpty. Operand 157 states and 167 transitions. [2020-07-17 17:28:26,271 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-07-17 17:28:26,271 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:26,271 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] [2020-07-17 17:28:26,272 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 17:28:26,272 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:26,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:26,273 INFO L82 PathProgramCache]: Analyzing trace with hash 1938604912, now seen corresponding path program 1 times [2020-07-17 17:28:26,273 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:26,273 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1911716808] [2020-07-17 17:28:26,274 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:26,303 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:26,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:26,360 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:26,360 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1911716808] [2020-07-17 17:28:26,360 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:26,361 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:26,361 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [773219356] [2020-07-17 17:28:26,361 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:26,361 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:26,362 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:26,362 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:26,362 INFO L87 Difference]: Start difference. First operand 157 states and 167 transitions. Second operand 4 states. [2020-07-17 17:28:26,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:26,578 INFO L93 Difference]: Finished difference Result 267 states and 287 transitions. [2020-07-17 17:28:26,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:26,579 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 42 [2020-07-17 17:28:26,579 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:26,586 INFO L225 Difference]: With dead ends: 267 [2020-07-17 17:28:26,586 INFO L226 Difference]: Without dead ends: 196 [2020-07-17 17:28:26,587 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:26,587 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-17 17:28:26,603 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 160. [2020-07-17 17:28:26,603 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 160 states. [2020-07-17 17:28:26,606 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 160 states to 160 states and 171 transitions. [2020-07-17 17:28:26,607 INFO L78 Accepts]: Start accepts. Automaton has 160 states and 171 transitions. Word has length 42 [2020-07-17 17:28:26,608 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:26,608 INFO L479 AbstractCegarLoop]: Abstraction has 160 states and 171 transitions. [2020-07-17 17:28:26,608 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:26,609 INFO L276 IsEmpty]: Start isEmpty. Operand 160 states and 171 transitions. [2020-07-17 17:28:26,611 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2020-07-17 17:28:26,611 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:26,611 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:26,611 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 17:28:26,612 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:26,612 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:26,612 INFO L82 PathProgramCache]: Analyzing trace with hash -1017153069, now seen corresponding path program 1 times [2020-07-17 17:28:26,612 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:26,613 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [149040647] [2020-07-17 17:28:26,613 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:26,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:26,688 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:26,693 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:26,693 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [149040647] [2020-07-17 17:28:26,693 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:26,693 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:26,694 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935026217] [2020-07-17 17:28:26,694 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:26,694 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:26,694 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:26,695 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:26,695 INFO L87 Difference]: Start difference. First operand 160 states and 171 transitions. Second operand 4 states. [2020-07-17 17:28:26,902 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:26,902 INFO L93 Difference]: Finished difference Result 160 states and 171 transitions. [2020-07-17 17:28:26,903 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:26,903 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 44 [2020-07-17 17:28:26,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:26,904 INFO L225 Difference]: With dead ends: 160 [2020-07-17 17:28:26,904 INFO L226 Difference]: Without dead ends: 158 [2020-07-17 17:28:26,905 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:26,906 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 158 states. [2020-07-17 17:28:26,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 158 to 158. [2020-07-17 17:28:26,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 158 states. [2020-07-17 17:28:26,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 158 states to 158 states and 169 transitions. [2020-07-17 17:28:26,925 INFO L78 Accepts]: Start accepts. Automaton has 158 states and 169 transitions. Word has length 44 [2020-07-17 17:28:26,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:26,925 INFO L479 AbstractCegarLoop]: Abstraction has 158 states and 169 transitions. [2020-07-17 17:28:26,926 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:26,926 INFO L276 IsEmpty]: Start isEmpty. Operand 158 states and 169 transitions. [2020-07-17 17:28:26,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 49 [2020-07-17 17:28:26,927 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:26,927 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] [2020-07-17 17:28:26,927 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 17:28:26,940 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:26,941 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:26,941 INFO L82 PathProgramCache]: Analyzing trace with hash -1203451366, now seen corresponding path program 1 times [2020-07-17 17:28:26,941 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:26,941 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1328615902] [2020-07-17 17:28:26,941 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:26,958 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:27,113 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:27,122 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:27,123 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1328615902] [2020-07-17 17:28:27,123 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:27,123 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-17 17:28:27,129 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2082934426] [2020-07-17 17:28:27,130 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-17 17:28:27,130 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:27,131 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-17 17:28:27,131 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:28:27,131 INFO L87 Difference]: Start difference. First operand 158 states and 169 transitions. Second operand 11 states. [2020-07-17 17:28:27,929 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:27,929 INFO L93 Difference]: Finished difference Result 398 states and 427 transitions. [2020-07-17 17:28:27,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2020-07-17 17:28:27,930 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 48 [2020-07-17 17:28:27,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:27,933 INFO L225 Difference]: With dead ends: 398 [2020-07-17 17:28:27,933 INFO L226 Difference]: Without dead ends: 326 [2020-07-17 17:28:27,934 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 76 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=146, Invalid=406, Unknown=0, NotChecked=0, Total=552 [2020-07-17 17:28:27,935 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 326 states. [2020-07-17 17:28:27,978 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 326 to 204. [2020-07-17 17:28:27,979 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 204 states. [2020-07-17 17:28:27,980 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 204 states to 204 states and 220 transitions. [2020-07-17 17:28:27,980 INFO L78 Accepts]: Start accepts. Automaton has 204 states and 220 transitions. Word has length 48 [2020-07-17 17:28:27,980 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:27,980 INFO L479 AbstractCegarLoop]: Abstraction has 204 states and 220 transitions. [2020-07-17 17:28:27,980 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-17 17:28:27,980 INFO L276 IsEmpty]: Start isEmpty. Operand 204 states and 220 transitions. [2020-07-17 17:28:27,982 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-17 17:28:27,982 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:27,982 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] [2020-07-17 17:28:27,982 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 17:28:27,982 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:27,983 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:27,983 INFO L82 PathProgramCache]: Analyzing trace with hash 2069783995, now seen corresponding path program 1 times [2020-07-17 17:28:27,983 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:27,983 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [590104846] [2020-07-17 17:28:27,983 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:27,993 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:28,021 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:28,025 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:28,025 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [590104846] [2020-07-17 17:28:28,025 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:28,025 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:28,026 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1141723597] [2020-07-17 17:28:28,026 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:28,026 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:28,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:28,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:28,027 INFO L87 Difference]: Start difference. First operand 204 states and 220 transitions. Second operand 4 states. [2020-07-17 17:28:28,238 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:28,238 INFO L93 Difference]: Finished difference Result 211 states and 228 transitions. [2020-07-17 17:28:28,240 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:28,241 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 52 [2020-07-17 17:28:28,241 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:28,242 INFO L225 Difference]: With dead ends: 211 [2020-07-17 17:28:28,242 INFO L226 Difference]: Without dead ends: 206 [2020-07-17 17:28:28,243 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:28,245 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2020-07-17 17:28:28,271 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 206. [2020-07-17 17:28:28,271 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 206 states. [2020-07-17 17:28:28,272 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 206 states to 206 states and 222 transitions. [2020-07-17 17:28:28,272 INFO L78 Accepts]: Start accepts. Automaton has 206 states and 222 transitions. Word has length 52 [2020-07-17 17:28:28,273 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:28,273 INFO L479 AbstractCegarLoop]: Abstraction has 206 states and 222 transitions. [2020-07-17 17:28:28,274 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:28,274 INFO L276 IsEmpty]: Start isEmpty. Operand 206 states and 222 transitions. [2020-07-17 17:28:28,275 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-17 17:28:28,275 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:28,275 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:28,275 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 17:28:28,276 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:28,276 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:28,276 INFO L82 PathProgramCache]: Analyzing trace with hash -1565892499, now seen corresponding path program 1 times [2020-07-17 17:28:28,276 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:28,277 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867942121] [2020-07-17 17:28:28,277 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:28,293 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:28,592 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:28,605 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:28,606 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867942121] [2020-07-17 17:28:28,606 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:28,606 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-07-17 17:28:28,606 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2039254695] [2020-07-17 17:28:28,607 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-07-17 17:28:28,607 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:28,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-07-17 17:28:28,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-07-17 17:28:28,607 INFO L87 Difference]: Start difference. First operand 206 states and 222 transitions. Second operand 14 states. [2020-07-17 17:28:30,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:30,503 INFO L93 Difference]: Finished difference Result 636 states and 681 transitions. [2020-07-17 17:28:30,503 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 17:28:30,503 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 53 [2020-07-17 17:28:30,503 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:30,507 INFO L225 Difference]: With dead ends: 636 [2020-07-17 17:28:30,507 INFO L226 Difference]: Without dead ends: 633 [2020-07-17 17:28:30,508 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-07-17 17:28:30,509 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 633 states. [2020-07-17 17:28:30,545 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 633 to 225. [2020-07-17 17:28:30,545 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 225 states. [2020-07-17 17:28:30,546 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 225 states to 225 states and 243 transitions. [2020-07-17 17:28:30,547 INFO L78 Accepts]: Start accepts. Automaton has 225 states and 243 transitions. Word has length 53 [2020-07-17 17:28:30,547 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:30,547 INFO L479 AbstractCegarLoop]: Abstraction has 225 states and 243 transitions. [2020-07-17 17:28:30,547 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-07-17 17:28:30,547 INFO L276 IsEmpty]: Start isEmpty. Operand 225 states and 243 transitions. [2020-07-17 17:28:30,548 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-17 17:28:30,548 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:30,548 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] [2020-07-17 17:28:30,549 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 17:28:30,549 INFO L427 AbstractCegarLoop]: === Iteration 12 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:30,549 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:30,549 INFO L82 PathProgramCache]: Analyzing trace with hash 991929043, now seen corresponding path program 1 times [2020-07-17 17:28:30,550 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:30,550 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [159761416] [2020-07-17 17:28:30,550 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:30,558 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:30,640 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:30,651 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 17:28:30,652 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [159761416] [2020-07-17 17:28:30,652 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:30,652 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:28:30,652 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1188526576] [2020-07-17 17:28:30,653 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:28:30,653 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:30,653 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:28:30,653 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:30,654 INFO L87 Difference]: Start difference. First operand 225 states and 243 transitions. Second operand 8 states. [2020-07-17 17:28:31,090 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:31,090 INFO L93 Difference]: Finished difference Result 321 states and 346 transitions. [2020-07-17 17:28:31,091 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-07-17 17:28:31,091 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 53 [2020-07-17 17:28:31,091 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:31,093 INFO L225 Difference]: With dead ends: 321 [2020-07-17 17:28:31,093 INFO L226 Difference]: Without dead ends: 291 [2020-07-17 17:28:31,093 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=96, Unknown=0, NotChecked=0, Total=132 [2020-07-17 17:28:31,094 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 291 states. [2020-07-17 17:28:31,128 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 291 to 275. [2020-07-17 17:28:31,129 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 275 states. [2020-07-17 17:28:31,130 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 275 states to 275 states and 301 transitions. [2020-07-17 17:28:31,130 INFO L78 Accepts]: Start accepts. Automaton has 275 states and 301 transitions. Word has length 53 [2020-07-17 17:28:31,131 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:31,131 INFO L479 AbstractCegarLoop]: Abstraction has 275 states and 301 transitions. [2020-07-17 17:28:31,131 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:28:31,131 INFO L276 IsEmpty]: Start isEmpty. Operand 275 states and 301 transitions. [2020-07-17 17:28:31,132 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-07-17 17:28:31,132 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:31,132 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] [2020-07-17 17:28:31,132 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-07-17 17:28:31,132 INFO L427 AbstractCegarLoop]: === Iteration 13 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:31,133 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:31,133 INFO L82 PathProgramCache]: Analyzing trace with hash -604385608, now seen corresponding path program 1 times [2020-07-17 17:28:31,133 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:31,133 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037915072] [2020-07-17 17:28:31,133 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:31,142 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:31,208 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:31,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:31,215 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037915072] [2020-07-17 17:28:31,215 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:31,216 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-17 17:28:31,216 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [990675117] [2020-07-17 17:28:31,216 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-17 17:28:31,217 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:31,217 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-17 17:28:31,217 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-07-17 17:28:31,217 INFO L87 Difference]: Start difference. First operand 275 states and 301 transitions. Second operand 8 states. [2020-07-17 17:28:31,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:31,665 INFO L93 Difference]: Finished difference Result 294 states and 322 transitions. [2020-07-17 17:28:31,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2020-07-17 17:28:31,665 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-07-17 17:28:31,666 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:31,667 INFO L225 Difference]: With dead ends: 294 [2020-07-17 17:28:31,667 INFO L226 Difference]: Without dead ends: 289 [2020-07-17 17:28:31,668 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 23 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=67, Invalid=143, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:28:31,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 289 states. [2020-07-17 17:28:31,706 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 289 to 268. [2020-07-17 17:28:31,706 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 268 states. [2020-07-17 17:28:31,707 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 268 states to 268 states and 293 transitions. [2020-07-17 17:28:31,707 INFO L78 Accepts]: Start accepts. Automaton has 268 states and 293 transitions. Word has length 54 [2020-07-17 17:28:31,707 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:31,707 INFO L479 AbstractCegarLoop]: Abstraction has 268 states and 293 transitions. [2020-07-17 17:28:31,707 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-17 17:28:31,708 INFO L276 IsEmpty]: Start isEmpty. Operand 268 states and 293 transitions. [2020-07-17 17:28:31,708 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-07-17 17:28:31,708 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:31,708 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] [2020-07-17 17:28:31,709 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-07-17 17:28:31,709 INFO L427 AbstractCegarLoop]: === Iteration 14 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:31,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:31,709 INFO L82 PathProgramCache]: Analyzing trace with hash -1636675303, now seen corresponding path program 1 times [2020-07-17 17:28:31,709 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:31,710 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1955203592] [2020-07-17 17:28:31,710 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:31,722 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:31,968 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:31,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:31,985 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1955203592] [2020-07-17 17:28:31,986 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:31,986 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [15] imperfect sequences [] total 15 [2020-07-17 17:28:31,986 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [900478363] [2020-07-17 17:28:31,986 INFO L459 AbstractCegarLoop]: Interpolant automaton has 15 states [2020-07-17 17:28:31,987 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:31,987 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2020-07-17 17:28:31,987 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=179, Unknown=0, NotChecked=0, Total=210 [2020-07-17 17:28:31,987 INFO L87 Difference]: Start difference. First operand 268 states and 293 transitions. Second operand 15 states. [2020-07-17 17:28:33,672 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:33,672 INFO L93 Difference]: Finished difference Result 722 states and 782 transitions. [2020-07-17 17:28:33,673 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 17:28:33,673 INFO L78 Accepts]: Start accepts. Automaton has 15 states. Word has length 57 [2020-07-17 17:28:33,673 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:33,676 INFO L225 Difference]: With dead ends: 722 [2020-07-17 17:28:33,676 INFO L226 Difference]: Without dead ends: 719 [2020-07-17 17:28:33,677 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=272, Invalid=850, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 17:28:33,679 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 719 states. [2020-07-17 17:28:33,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 719 to 272. [2020-07-17 17:28:33,746 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 272 states. [2020-07-17 17:28:33,748 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 272 states to 272 states and 297 transitions. [2020-07-17 17:28:33,748 INFO L78 Accepts]: Start accepts. Automaton has 272 states and 297 transitions. Word has length 57 [2020-07-17 17:28:33,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:33,748 INFO L479 AbstractCegarLoop]: Abstraction has 272 states and 297 transitions. [2020-07-17 17:28:33,748 INFO L480 AbstractCegarLoop]: Interpolant automaton has 15 states. [2020-07-17 17:28:33,748 INFO L276 IsEmpty]: Start isEmpty. Operand 272 states and 297 transitions. [2020-07-17 17:28:33,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-07-17 17:28:33,749 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:33,749 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] [2020-07-17 17:28:33,749 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable13 [2020-07-17 17:28:33,749 INFO L427 AbstractCegarLoop]: === Iteration 15 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:33,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:33,750 INFO L82 PathProgramCache]: Analyzing trace with hash -1939208096, now seen corresponding path program 1 times [2020-07-17 17:28:33,750 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:33,750 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447382558] [2020-07-17 17:28:33,750 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:33,759 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:33,778 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:33,781 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-07-17 17:28:33,781 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [447382558] [2020-07-17 17:28:33,782 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:33,782 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:33,782 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1020340607] [2020-07-17 17:28:33,782 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:33,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:33,783 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:33,783 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:33,783 INFO L87 Difference]: Start difference. First operand 272 states and 297 transitions. Second operand 4 states. [2020-07-17 17:28:34,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:34,024 INFO L93 Difference]: Finished difference Result 277 states and 302 transitions. [2020-07-17 17:28:34,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:34,025 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 58 [2020-07-17 17:28:34,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:34,027 INFO L225 Difference]: With dead ends: 277 [2020-07-17 17:28:34,027 INFO L226 Difference]: Without dead ends: 275 [2020-07-17 17:28:34,030 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:34,030 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 275 states. [2020-07-17 17:28:34,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 275 to 270. [2020-07-17 17:28:34,066 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-17 17:28:34,067 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 295 transitions. [2020-07-17 17:28:34,067 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 295 transitions. Word has length 58 [2020-07-17 17:28:34,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:34,068 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 295 transitions. [2020-07-17 17:28:34,068 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:34,068 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 295 transitions. [2020-07-17 17:28:34,068 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 60 [2020-07-17 17:28:34,068 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:34,069 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:34,069 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable14 [2020-07-17 17:28:34,069 INFO L427 AbstractCegarLoop]: === Iteration 16 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:34,069 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:34,069 INFO L82 PathProgramCache]: Analyzing trace with hash 1792411396, now seen corresponding path program 1 times [2020-07-17 17:28:34,070 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:34,070 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1181060327] [2020-07-17 17:28:34,070 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:34,078 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:34,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:34,172 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 5 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:34,172 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1181060327] [2020-07-17 17:28:34,173 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:28:34,173 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7] total 7 [2020-07-17 17:28:34,173 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [65844046] [2020-07-17 17:28:34,173 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 17:28:34,174 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:34,174 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 17:28:34,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 17:28:34,174 INFO L87 Difference]: Start difference. First operand 270 states and 295 transitions. Second operand 7 states. [2020-07-17 17:28:34,625 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:34,626 INFO L93 Difference]: Finished difference Result 421 states and 458 transitions. [2020-07-17 17:28:34,626 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-17 17:28:34,626 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 59 [2020-07-17 17:28:34,626 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:34,628 INFO L225 Difference]: With dead ends: 421 [2020-07-17 17:28:34,628 INFO L226 Difference]: Without dead ends: 312 [2020-07-17 17:28:34,629 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-17 17:28:34,629 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 312 states. [2020-07-17 17:28:34,710 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 312 to 270. [2020-07-17 17:28:34,710 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 270 states. [2020-07-17 17:28:34,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 270 states to 270 states and 293 transitions. [2020-07-17 17:28:34,711 INFO L78 Accepts]: Start accepts. Automaton has 270 states and 293 transitions. Word has length 59 [2020-07-17 17:28:34,711 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:34,712 INFO L479 AbstractCegarLoop]: Abstraction has 270 states and 293 transitions. [2020-07-17 17:28:34,712 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 17:28:34,712 INFO L276 IsEmpty]: Start isEmpty. Operand 270 states and 293 transitions. [2020-07-17 17:28:34,712 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-07-17 17:28:34,712 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:34,713 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, 1, 1] [2020-07-17 17:28:34,713 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable15 [2020-07-17 17:28:34,713 INFO L427 AbstractCegarLoop]: === Iteration 17 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:34,713 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:34,713 INFO L82 PathProgramCache]: Analyzing trace with hash -984681049, now seen corresponding path program 1 times [2020-07-17 17:28:34,714 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:34,714 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938277633] [2020-07-17 17:28:34,714 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:34,726 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:34,913 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:34,921 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:34,922 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938277633] [2020-07-17 17:28:34,922 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:34,922 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [16] imperfect sequences [] total 16 [2020-07-17 17:28:34,922 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1364830450] [2020-07-17 17:28:34,922 INFO L459 AbstractCegarLoop]: Interpolant automaton has 16 states [2020-07-17 17:28:34,923 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:34,923 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2020-07-17 17:28:34,923 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=206, Unknown=0, NotChecked=0, Total=240 [2020-07-17 17:28:34,923 INFO L87 Difference]: Start difference. First operand 270 states and 293 transitions. Second operand 16 states. [2020-07-17 17:28:36,355 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:36,355 INFO L93 Difference]: Finished difference Result 574 states and 610 transitions. [2020-07-17 17:28:36,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-07-17 17:28:36,356 INFO L78 Accepts]: Start accepts. Automaton has 16 states. Word has length 62 [2020-07-17 17:28:36,356 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:36,360 INFO L225 Difference]: With dead ends: 574 [2020-07-17 17:28:36,361 INFO L226 Difference]: Without dead ends: 540 [2020-07-17 17:28:36,362 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 153 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=274, Invalid=916, Unknown=0, NotChecked=0, Total=1190 [2020-07-17 17:28:36,363 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 540 states. [2020-07-17 17:28:36,424 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 540 to 269. [2020-07-17 17:28:36,424 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 269 states. [2020-07-17 17:28:36,425 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 269 states to 269 states and 291 transitions. [2020-07-17 17:28:36,426 INFO L78 Accepts]: Start accepts. Automaton has 269 states and 291 transitions. Word has length 62 [2020-07-17 17:28:36,426 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:36,426 INFO L479 AbstractCegarLoop]: Abstraction has 269 states and 291 transitions. [2020-07-17 17:28:36,426 INFO L480 AbstractCegarLoop]: Interpolant automaton has 16 states. [2020-07-17 17:28:36,426 INFO L276 IsEmpty]: Start isEmpty. Operand 269 states and 291 transitions. [2020-07-17 17:28:36,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 65 [2020-07-17 17:28:36,427 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:36,427 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, 1, 1, 1, 1] [2020-07-17 17:28:36,428 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable16 [2020-07-17 17:28:36,428 INFO L427 AbstractCegarLoop]: === Iteration 18 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:36,428 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:36,428 INFO L82 PathProgramCache]: Analyzing trace with hash -649286859, now seen corresponding path program 1 times [2020-07-17 17:28:36,428 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:36,429 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1488921931] [2020-07-17 17:28:36,429 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:36,437 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:36,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:36,466 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:36,467 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1488921931] [2020-07-17 17:28:36,467 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 17:28:36,467 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 17:28:36,467 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [807104318] [2020-07-17 17:28:36,467 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 17:28:36,468 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:36,468 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 17:28:36,468 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:36,468 INFO L87 Difference]: Start difference. First operand 269 states and 291 transitions. Second operand 4 states. [2020-07-17 17:28:36,883 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:36,883 INFO L93 Difference]: Finished difference Result 447 states and 493 transitions. [2020-07-17 17:28:36,883 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 17:28:36,884 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 64 [2020-07-17 17:28:36,884 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:36,886 INFO L225 Difference]: With dead ends: 447 [2020-07-17 17:28:36,887 INFO L226 Difference]: Without dead ends: 350 [2020-07-17 17:28:36,888 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 17:28:36,889 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 350 states. [2020-07-17 17:28:37,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 350 to 302. [2020-07-17 17:28:37,007 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 302 states. [2020-07-17 17:28:37,009 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 302 states to 302 states and 330 transitions. [2020-07-17 17:28:37,009 INFO L78 Accepts]: Start accepts. Automaton has 302 states and 330 transitions. Word has length 64 [2020-07-17 17:28:37,010 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:37,010 INFO L479 AbstractCegarLoop]: Abstraction has 302 states and 330 transitions. [2020-07-17 17:28:37,010 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 17:28:37,010 INFO L276 IsEmpty]: Start isEmpty. Operand 302 states and 330 transitions. [2020-07-17 17:28:37,012 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 68 [2020-07-17 17:28:37,012 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:37,012 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:37,013 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable17 [2020-07-17 17:28:37,013 INFO L427 AbstractCegarLoop]: === Iteration 19 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:37,013 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:37,013 INFO L82 PathProgramCache]: Analyzing trace with hash -201437452, now seen corresponding path program 1 times [2020-07-17 17:28:37,014 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:37,014 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2082276194] [2020-07-17 17:28:37,014 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:37,022 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:37,135 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 17:28:37,149 INFO L134 CoverageAnalysis]: Checked inductivity of 6 backedges. 4 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 17:28:37,149 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2082276194] [2020-07-17 17:28:37,150 INFO L220 FreeRefinementEngine]: Constructing automaton from 0 perfect and 1 imperfect interpolant sequences. [2020-07-17 17:28:37,150 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10] total 10 [2020-07-17 17:28:37,150 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [78780489] [2020-07-17 17:28:37,151 INFO L459 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-07-17 17:28:37,151 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 17:28:37,151 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-07-17 17:28:37,151 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-07-17 17:28:37,151 INFO L87 Difference]: Start difference. First operand 302 states and 330 transitions. Second operand 10 states. [2020-07-17 17:28:38,129 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 17:28:38,129 INFO L93 Difference]: Finished difference Result 489 states and 531 transitions. [2020-07-17 17:28:38,129 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 17:28:38,130 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 67 [2020-07-17 17:28:38,130 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 17:28:38,131 INFO L225 Difference]: With dead ends: 489 [2020-07-17 17:28:38,131 INFO L226 Difference]: Without dead ends: 429 [2020-07-17 17:28:38,132 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 16 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-07-17 17:28:38,132 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 429 states. [2020-07-17 17:28:38,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 429 to 343. [2020-07-17 17:28:38,209 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 343 states. [2020-07-17 17:28:38,210 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 343 states to 343 states and 382 transitions. [2020-07-17 17:28:38,210 INFO L78 Accepts]: Start accepts. Automaton has 343 states and 382 transitions. Word has length 67 [2020-07-17 17:28:38,210 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 17:28:38,210 INFO L479 AbstractCegarLoop]: Abstraction has 343 states and 382 transitions. [2020-07-17 17:28:38,210 INFO L480 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-07-17 17:28:38,210 INFO L276 IsEmpty]: Start isEmpty. Operand 343 states and 382 transitions. [2020-07-17 17:28:38,211 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 74 [2020-07-17 17:28:38,211 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 17:28:38,211 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 17:28:38,211 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable18 [2020-07-17 17:28:38,211 INFO L427 AbstractCegarLoop]: === Iteration 20 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr7ASSERT_VIOLATIONERROR_FUNCTION, mainErr8ASSERT_VIOLATIONERROR_FUNCTION, mainErr9ASSERT_VIOLATIONERROR_FUNCTION, mainErr10ASSERT_VIOLATIONERROR_FUNCTION, mainErr12ASSERT_VIOLATIONERROR_FUNCTION, mainErr4ASSERT_VIOLATIONERROR_FUNCTION, mainErr11ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr6ASSERT_VIOLATIONERROR_FUNCTION, mainErr5ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 17:28:38,212 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 17:28:38,212 INFO L82 PathProgramCache]: Analyzing trace with hash 364568229, now seen corresponding path program 1 times [2020-07-17 17:28:38,212 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 17:28:38,212 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [796875326] [2020-07-17 17:28:38,212 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 17:28:38,225 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:38,237 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 17:28:38,270 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 17:28:38,270 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 17:28:38,271 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable19 [2020-07-17 17:28:38,331 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 05:28:38 BoogieIcfgContainer [2020-07-17 17:28:38,331 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 17:28:38,334 INFO L168 Benchmark]: Toolchain (without parser) took 16951.18 ms. Allocated memory was 138.4 MB in the beginning and 453.0 MB in the end (delta: 314.6 MB). Free memory was 102.4 MB in the beginning and 255.0 MB in the end (delta: -152.6 MB). Peak memory consumption was 162.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,335 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,336 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.58 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 170.3 MB in the end (delta: -68.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,336 INFO L168 Benchmark]: Boogie Preprocessor took 82.02 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,337 INFO L168 Benchmark]: RCFGBuilder took 780.29 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 103.8 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,338 INFO L168 Benchmark]: TraceAbstraction took 15454.14 ms. Allocated memory was 202.9 MB in the beginning and 453.0 MB in the end (delta: 250.1 MB). Free memory was 103.8 MB in the beginning and 255.0 MB in the end (delta: -151.2 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. [2020-07-17 17:28:38,341 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.9 MB in the beginning and 121.6 MB in the end (delta: 209.9 kB). Peak memory consumption was 209.9 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 628.58 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 102.0 MB in the beginning and 170.3 MB in the end (delta: -68.3 MB). Peak memory consumption was 28.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 82.02 ms. Allocated memory is still 202.9 MB. Free memory was 170.3 MB in the beginning and 166.8 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 780.29 ms. Allocated memory is still 202.9 MB. Free memory was 166.8 MB in the beginning and 103.8 MB in the end (delta: 62.9 MB). Peak memory consumption was 62.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 15454.14 ms. Allocated memory was 202.9 MB in the beginning and 453.0 MB in the end (delta: 250.1 MB). Free memory was 103.8 MB in the beginning and 255.0 MB in the end (delta: -151.2 MB). Peak memory consumption was 98.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1025]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L991] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L992] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] EXPR list->inner != ((void*)0) || list->inner == ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L993] COND FALSE !(!(list->inner != ((void*)0) || list->inner == ((void*)0))) VAL [list={-1:0}, list->inner={-2:0}, list->inner != ((void*)0) || list->inner == ((void*)0)=1, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L998] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1008] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1009] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1012] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1014] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1016] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] EXPR end->inner VAL [end={-1:0}, end->inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] SLL* inner = end->inner; VAL [end={-1:0}, end->inner={-2:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND TRUE len == 0 VAL [end={-1:0}, inner={-2:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1021] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND FALSE !(!(((void*)0) == inner->inner)) VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1026] EXPR inner->next VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1026] COND FALSE !(!(((void*)0) == inner->next)) VAL [end={-1:0}, inner={-2:0}, inner->next={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] EXPR inner->inner VAL [end={-1:0}, inner={-2:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] inner = inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1028] COND TRUE len == 1 VAL [end={-1:0}, inner={0:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] EXPR inner->inner VAL [end={-1:0}, inner={0:0}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1029] inner = inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1018] COND TRUE ((void*)0) != inner VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] COND FALSE !(len == 0) VAL [end={-1:0}, inner={10:3}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1023] len = 2 VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1024] COND FALSE !(!(((void*)0) != inner)) VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] EXPR inner->inner VAL [end={-1:0}, inner={10:3}, inner->inner={11:13}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] COND TRUE !(((void*)0) == inner->inner) VAL [end={-1:0}, inner={10:3}, inner->inner={11:13}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1025] __VERIFIER_error() VAL [end={-1:0}, inner={10:3}, len=2, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 171 locations, 13 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 15.3s, OverallIterations: 20, TraceHistogramMax: 2, AutomataDifference: 11.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 3222 SDtfs, 6415 SDslu, 10727 SDs, 0 SdLazy, 7253 SolverSat, 252 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 5.8s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 281 GetRequests, 62 SyntacticMatches, 1 SemanticMatches, 218 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 612 ImplicationChecksByTransitivity, 4.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=343occurred in iteration=19, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.8s AutomataMinimizationTime, 19 MinimizatonAttempts, 1879 StatesRemovedByMinimization, 16 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.2s SatisfiabilityAnalysisTime, 1.9s InterpolantComputationTime, 952 NumberOfCodeBlocks, 952 NumberOfCodeBlocksAsserted, 20 NumberOfCheckSat, 860 ConstructedInterpolants, 0 QuantifiedInterpolants, 314052 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 19 InterpolantComputations, 17 PerfectInterpolantSequences, 13/16 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...