/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/dll-01-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 22:07:17,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 22:07:17,917 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 22:07:17,961 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 22:07:17,961 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 22:07:17,965 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 22:07:17,966 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 22:07:17,971 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 22:07:17,977 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 22:07:17,978 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 22:07:17,981 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 22:07:17,983 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 22:07:17,983 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 22:07:17,986 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 22:07:17,989 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 22:07:17,991 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 22:07:17,992 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 22:07:17,994 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 22:07:17,996 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 22:07:18,003 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 22:07:18,005 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 22:07:18,006 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 22:07:18,007 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 22:07:18,008 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 22:07:18,013 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 22:07:18,013 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 22:07:18,013 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 22:07:18,016 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 22:07:18,016 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 22:07:18,027 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 22:07:18,027 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 22:07:18,028 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 22:07:18,029 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 22:07:18,030 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 22:07:18,031 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 22:07:18,031 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 22:07:18,032 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 22:07:18,032 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 22:07:18,033 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 22:07:18,034 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 22:07:18,034 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 22:07:18,035 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 22:07:18,047 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 22:07:18,047 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 22:07:18,049 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 22:07:18,049 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 22:07:18,049 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 22:07:18,049 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 22:07:18,050 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 22:07:18,050 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 22:07:18,050 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 22:07:18,050 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 22:07:18,050 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 22:07:18,051 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 22:07:18,051 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 22:07:18,051 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 22:07:18,051 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 22:07:18,052 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 22:07:18,052 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 22:07:18,052 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 22:07:18,052 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:18,052 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 22:07:18,053 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 22:07:18,053 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 22:07:18,053 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 [2020-09-04 22:07:18,523 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 22:07:18,542 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 22:07:18,548 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 22:07:18,550 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 22:07:18,551 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 22:07:18,552 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 22:07:18,639 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6368667bc/2102e2a046bd423b881742c5e094af32/FLAG24253c3a6 [2020-09-04 22:07:19,308 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 22:07:19,309 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/forester-heap/dll-01-1.i [2020-09-04 22:07:19,326 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6368667bc/2102e2a046bd423b881742c5e094af32/FLAG24253c3a6 [2020-09-04 22:07:19,543 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/6368667bc/2102e2a046bd423b881742c5e094af32 [2020-09-04 22:07:19,558 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 22:07:19,560 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 22:07:19,561 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:19,561 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 22:07:19,566 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 22:07:19,567 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:19" (1/1) ... [2020-09-04 22:07:19,571 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@ac0db7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:19, skipping insertion in model container [2020-09-04 22:07:19,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 10:07:19" (1/1) ... [2020-09-04 22:07:19,582 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 22:07:19,657 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 22:07:20,174 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:20,185 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 22:07:20,268 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 22:07:20,324 INFO L208 MainTranslator]: Completed translation [2020-09-04 22:07:20,324 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20 WrapperNode [2020-09-04 22:07:20,324 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 22:07:20,325 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 22:07:20,326 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 22:07:20,326 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 22:07:20,345 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,345 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,366 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,366 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,389 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,402 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,407 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... [2020-09-04 22:07:20,415 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 22:07:20,415 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 22:07:20,415 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 22:07:20,416 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 22:07:20,417 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 22:07:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 22:07:20,507 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 22:07:20,508 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 22:07:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 22:07:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 22:07:20,508 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 22:07:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 22:07:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 22:07:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 22:07:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 22:07:20,509 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 22:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 22:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 22:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 22:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 22:07:20,510 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 22:07:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 22:07:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 22:07:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 22:07:20,511 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 22:07:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 22:07:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 22:07:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 22:07:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 22:07:20,512 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 22:07:20,513 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 22:07:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 22:07:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 22:07:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 22:07:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 22:07:20,514 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 22:07:20,515 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 22:07:20,516 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 22:07:20,517 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 22:07:20,518 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 22:07:20,519 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 22:07:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 22:07:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 22:07:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 22:07:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 22:07:20,520 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 22:07:20,521 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 22:07:20,522 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 22:07:20,523 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 22:07:20,524 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 22:07:20,525 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 22:07:20,526 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 22:07:20,527 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 22:07:21,307 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 22:07:21,308 INFO L295 CfgBuilder]: Removed 30 assume(true) statements. [2020-09-04 22:07:21,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:21 BoogieIcfgContainer [2020-09-04 22:07:21,315 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 22:07:21,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 22:07:21,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 22:07:21,322 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 22:07:21,323 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 10:07:19" (1/3) ... [2020-09-04 22:07:21,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29244edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:21, skipping insertion in model container [2020-09-04 22:07:21,324 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 10:07:20" (2/3) ... [2020-09-04 22:07:21,325 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@29244edd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 10:07:21, skipping insertion in model container [2020-09-04 22:07:21,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 10:07:21" (3/3) ... [2020-09-04 22:07:21,328 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-01-1.i [2020-09-04 22:07:21,342 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:Craig_NestedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 22:07:21,357 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 13 error locations. [2020-09-04 22:07:21,382 INFO L251 AbstractCegarLoop]: Starting to check reachability of 13 error locations. [2020-09-04 22:07:21,416 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 22:07:21,416 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 22:07:21,416 INFO L377 AbstractCegarLoop]: Compute interpolants for Craig_NestedInterpolation [2020-09-04 22:07:21,417 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 22:07:21,417 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 22:07:21,417 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 22:07:21,417 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 22:07:21,417 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 22:07:21,444 INFO L276 IsEmpty]: Start isEmpty. Operand 171 states. [2020-09-04 22:07:21,458 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-09-04 22:07:21,459 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:21,460 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:21,461 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]=== [2020-09-04 22:07:21,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:21,470 INFO L82 PathProgramCache]: Analyzing trace with hash -1409190174, now seen corresponding path program 1 times [2020-09-04 22:07:21,483 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:21,484 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1577656691] [2020-09-04 22:07:21,484 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:21,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,777 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:21,779 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:21,797 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:21,798 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1577656691] [2020-09-04 22:07:21,803 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:21,804 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 22:07:21,808 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1741361857] [2020-09-04 22:07:21,820 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 22:07:21,821 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:21,840 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 22:07:21,841 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 22:07:21,844 INFO L87 Difference]: Start difference. First operand 171 states. Second operand 5 states. [2020-09-04 22:07:22,341 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:22,342 INFO L93 Difference]: Finished difference Result 359 states and 475 transitions. [2020-09-04 22:07:22,342 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-09-04 22:07:22,344 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-09-04 22:07:22,345 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:22,361 INFO L225 Difference]: With dead ends: 359 [2020-09-04 22:07:22,361 INFO L226 Difference]: Without dead ends: 194 [2020-09-04 22:07:22,369 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 [2020-09-04 22:07:22,394 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 194 states. [2020-09-04 22:07:22,444 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 194 to 164. [2020-09-04 22:07:22,446 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 164 states. [2020-09-04 22:07:22,449 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 164 states to 164 states and 173 transitions. [2020-09-04 22:07:22,451 INFO L78 Accepts]: Start accepts. Automaton has 164 states and 173 transitions. Word has length 13 [2020-09-04 22:07:22,452 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:22,452 INFO L479 AbstractCegarLoop]: Abstraction has 164 states and 173 transitions. [2020-09-04 22:07:22,452 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 22:07:22,453 INFO L276 IsEmpty]: Start isEmpty. Operand 164 states and 173 transitions. [2020-09-04 22:07:22,454 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2020-09-04 22:07:22,454 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:22,454 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] [2020-09-04 22:07:22,454 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 22:07:22,455 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]=== [2020-09-04 22:07:22,455 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:22,455 INFO L82 PathProgramCache]: Analyzing trace with hash -1469410252, now seen corresponding path program 1 times [2020-09-04 22:07:22,456 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:22,456 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [72566591] [2020-09-04 22:07:22,456 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:22,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:22,566 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:22,568 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:22,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:22,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [72566591] [2020-09-04 22:07:22,578 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:22,579 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:22,579 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1447499138] [2020-09-04 22:07:22,581 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:22,581 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:22,581 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:22,582 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:22,582 INFO L87 Difference]: Start difference. First operand 164 states and 173 transitions. Second operand 4 states. [2020-09-04 22:07:22,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:22,928 INFO L93 Difference]: Finished difference Result 170 states and 179 transitions. [2020-09-04 22:07:22,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:22,929 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 25 [2020-09-04 22:07:22,930 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:22,933 INFO L225 Difference]: With dead ends: 170 [2020-09-04 22:07:22,934 INFO L226 Difference]: Without dead ends: 165 [2020-09-04 22:07:22,935 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 [2020-09-04 22:07:22,939 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 165 states. [2020-09-04 22:07:22,984 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 165 to 165. [2020-09-04 22:07:22,985 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 165 states. [2020-09-04 22:07:22,992 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 165 states to 165 states and 174 transitions. [2020-09-04 22:07:22,993 INFO L78 Accepts]: Start accepts. Automaton has 165 states and 174 transitions. Word has length 25 [2020-09-04 22:07:22,996 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:22,996 INFO L479 AbstractCegarLoop]: Abstraction has 165 states and 174 transitions. [2020-09-04 22:07:22,996 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:22,996 INFO L276 IsEmpty]: Start isEmpty. Operand 165 states and 174 transitions. [2020-09-04 22:07:22,998 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-09-04 22:07:22,998 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:22,998 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] [2020-09-04 22:07:22,998 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 22:07:22,999 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]=== [2020-09-04 22:07:22,999 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:22,999 INFO L82 PathProgramCache]: Analyzing trace with hash -155961871, now seen corresponding path program 1 times [2020-09-04 22:07:23,000 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:23,000 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1288410543] [2020-09-04 22:07:23,000 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:23,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,170 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:23,172 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:23,180 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:23,181 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1288410543] [2020-09-04 22:07:23,181 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:23,182 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:23,182 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [926085258] [2020-09-04 22:07:23,183 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:23,183 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:23,183 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:23,184 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:23,184 INFO L87 Difference]: Start difference. First operand 165 states and 174 transitions. Second operand 8 states. [2020-09-04 22:07:23,848 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:23,848 INFO L93 Difference]: Finished difference Result 254 states and 269 transitions. [2020-09-04 22:07:23,849 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-09-04 22:07:23,849 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 27 [2020-09-04 22:07:23,850 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:23,852 INFO L225 Difference]: With dead ends: 254 [2020-09-04 22:07:23,853 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 22:07:23,853 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=60, Invalid=122, Unknown=0, NotChecked=0, Total=182 [2020-09-04 22:07:23,859 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 22:07:23,890 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 159. [2020-09-04 22:07:23,890 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 159 states. [2020-09-04 22:07:23,891 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 159 states to 159 states and 168 transitions. [2020-09-04 22:07:23,891 INFO L78 Accepts]: Start accepts. Automaton has 159 states and 168 transitions. Word has length 27 [2020-09-04 22:07:23,892 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:23,892 INFO L479 AbstractCegarLoop]: Abstraction has 159 states and 168 transitions. [2020-09-04 22:07:23,892 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:23,892 INFO L276 IsEmpty]: Start isEmpty. Operand 159 states and 168 transitions. [2020-09-04 22:07:23,893 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 22:07:23,894 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:23,894 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:23,894 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 22:07:23,894 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]=== [2020-09-04 22:07:23,895 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:23,895 INFO L82 PathProgramCache]: Analyzing trace with hash 1500955686, now seen corresponding path program 1 times [2020-09-04 22:07:23,895 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:23,895 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [152741662] [2020-09-04 22:07:23,895 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:23,936 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,023 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:24,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,031 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:24,032 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [152741662] [2020-09-04 22:07:24,032 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:24,032 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 22:07:24,033 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055552800] [2020-09-04 22:07:24,033 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 22:07:24,033 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:24,034 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 22:07:24,034 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 22:07:24,034 INFO L87 Difference]: Start difference. First operand 159 states and 168 transitions. Second operand 6 states. [2020-09-04 22:07:24,490 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:24,491 INFO L93 Difference]: Finished difference Result 377 states and 399 transitions. [2020-09-04 22:07:24,491 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:07:24,491 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 33 [2020-09-04 22:07:24,492 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:24,494 INFO L225 Difference]: With dead ends: 377 [2020-09-04 22:07:24,494 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 22:07:24,496 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 [2020-09-04 22:07:24,499 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 22:07:24,536 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 162. [2020-09-04 22:07:24,536 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 162 states. [2020-09-04 22:07:24,537 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 162 states to 162 states and 171 transitions. [2020-09-04 22:07:24,538 INFO L78 Accepts]: Start accepts. Automaton has 162 states and 171 transitions. Word has length 33 [2020-09-04 22:07:24,538 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:24,538 INFO L479 AbstractCegarLoop]: Abstraction has 162 states and 171 transitions. [2020-09-04 22:07:24,538 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 22:07:24,539 INFO L276 IsEmpty]: Start isEmpty. Operand 162 states and 171 transitions. [2020-09-04 22:07:24,540 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2020-09-04 22:07:24,540 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:24,540 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] [2020-09-04 22:07:24,541 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 22:07:24,541 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]=== [2020-09-04 22:07:24,541 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:24,541 INFO L82 PathProgramCache]: Analyzing trace with hash -820684573, now seen corresponding path program 1 times [2020-09-04 22:07:24,542 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:24,542 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [890889495] [2020-09-04 22:07:24,542 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:24,593 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,698 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:24,699 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:24,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:24,709 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [890889495] [2020-09-04 22:07:24,710 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:24,710 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 22:07:24,710 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1032660714] [2020-09-04 22:07:24,711 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 22:07:24,712 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:24,712 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 22:07:24,712 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 22:07:24,712 INFO L87 Difference]: Start difference. First operand 162 states and 171 transitions. Second operand 7 states. [2020-09-04 22:07:25,091 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:25,092 INFO L93 Difference]: Finished difference Result 270 states and 285 transitions. [2020-09-04 22:07:25,092 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 22:07:25,093 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 35 [2020-09-04 22:07:25,093 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:25,095 INFO L225 Difference]: With dead ends: 270 [2020-09-04 22:07:25,095 INFO L226 Difference]: Without dead ends: 238 [2020-09-04 22:07:25,097 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=29, Invalid=61, Unknown=0, NotChecked=0, Total=90 [2020-09-04 22:07:25,098 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 238 states. [2020-09-04 22:07:25,120 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 238 to 161. [2020-09-04 22:07:25,120 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 161 states. [2020-09-04 22:07:25,121 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 170 transitions. [2020-09-04 22:07:25,121 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 170 transitions. Word has length 35 [2020-09-04 22:07:25,122 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:25,122 INFO L479 AbstractCegarLoop]: Abstraction has 161 states and 170 transitions. [2020-09-04 22:07:25,122 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 22:07:25,122 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 170 transitions. [2020-09-04 22:07:25,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 22:07:25,135 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:25,135 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] [2020-09-04 22:07:25,135 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 22:07:25,135 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]=== [2020-09-04 22:07:25,137 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:25,138 INFO L82 PathProgramCache]: Analyzing trace with hash -2091807586, now seen corresponding path program 1 times [2020-09-04 22:07:25,138 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:25,138 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1675131326] [2020-09-04 22:07:25,139 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:25,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,376 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:25,377 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:25,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:25,385 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1675131326] [2020-09-04 22:07:25,386 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:25,386 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2020-09-04 22:07:25,386 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [541162080] [2020-09-04 22:07:25,387 INFO L459 AbstractCegarLoop]: Interpolant automaton has 12 states [2020-09-04 22:07:25,387 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:25,387 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2020-09-04 22:07:25,388 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=109, Unknown=0, NotChecked=0, Total=132 [2020-09-04 22:07:25,388 INFO L87 Difference]: Start difference. First operand 161 states and 170 transitions. Second operand 12 states. [2020-09-04 22:07:26,262 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:26,262 INFO L93 Difference]: Finished difference Result 286 states and 302 transitions. [2020-09-04 22:07:26,263 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-09-04 22:07:26,263 INFO L78 Accepts]: Start accepts. Automaton has 12 states. Word has length 42 [2020-09-04 22:07:26,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:26,265 INFO L225 Difference]: With dead ends: 286 [2020-09-04 22:07:26,265 INFO L226 Difference]: Without dead ends: 282 [2020-09-04 22:07:26,266 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=92, Invalid=288, Unknown=0, NotChecked=0, Total=380 [2020-09-04 22:07:26,267 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 282 states. [2020-09-04 22:07:26,292 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 282 to 176. [2020-09-04 22:07:26,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 176 states. [2020-09-04 22:07:26,293 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 176 states to 176 states and 186 transitions. [2020-09-04 22:07:26,294 INFO L78 Accepts]: Start accepts. Automaton has 176 states and 186 transitions. Word has length 42 [2020-09-04 22:07:26,294 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:26,294 INFO L479 AbstractCegarLoop]: Abstraction has 176 states and 186 transitions. [2020-09-04 22:07:26,294 INFO L480 AbstractCegarLoop]: Interpolant automaton has 12 states. [2020-09-04 22:07:26,295 INFO L276 IsEmpty]: Start isEmpty. Operand 176 states and 186 transitions. [2020-09-04 22:07:26,296 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-09-04 22:07:26,296 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:26,296 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] [2020-09-04 22:07:26,296 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-09-04 22:07:26,297 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]=== [2020-09-04 22:07:26,297 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:26,297 INFO L82 PathProgramCache]: Analyzing trace with hash 654436304, now seen corresponding path program 1 times [2020-09-04 22:07:26,297 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:26,298 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1224357378] [2020-09-04 22:07:26,298 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:26,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,345 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:26,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:26,351 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1224357378] [2020-09-04 22:07:26,351 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:26,352 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:26,352 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [5001169] [2020-09-04 22:07:26,352 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:26,353 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:26,353 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:26,353 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:26,354 INFO L87 Difference]: Start difference. First operand 176 states and 186 transitions. Second operand 4 states. [2020-09-04 22:07:26,637 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:26,637 INFO L93 Difference]: Finished difference Result 282 states and 301 transitions. [2020-09-04 22:07:26,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:26,638 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 43 [2020-09-04 22:07:26,639 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:26,640 INFO L225 Difference]: With dead ends: 282 [2020-09-04 22:07:26,640 INFO L226 Difference]: Without dead ends: 215 [2020-09-04 22:07:26,655 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 [2020-09-04 22:07:26,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 215 states. [2020-09-04 22:07:26,676 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 215 to 179. [2020-09-04 22:07:26,677 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 179 states. [2020-09-04 22:07:26,678 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 179 states to 179 states and 190 transitions. [2020-09-04 22:07:26,678 INFO L78 Accepts]: Start accepts. Automaton has 179 states and 190 transitions. Word has length 43 [2020-09-04 22:07:26,678 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:26,679 INFO L479 AbstractCegarLoop]: Abstraction has 179 states and 190 transitions. [2020-09-04 22:07:26,679 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:26,679 INFO L276 IsEmpty]: Start isEmpty. Operand 179 states and 190 transitions. [2020-09-04 22:07:26,681 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 46 [2020-09-04 22:07:26,681 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:26,682 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 22:07:26,682 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-09-04 22:07:26,682 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]=== [2020-09-04 22:07:26,682 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:26,682 INFO L82 PathProgramCache]: Analyzing trace with hash 1847672787, now seen corresponding path program 1 times [2020-09-04 22:07:26,683 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:26,683 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [749335252] [2020-09-04 22:07:26,684 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:26,710 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,771 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:26,773 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:26,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:26,779 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [749335252] [2020-09-04 22:07:26,779 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:26,779 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:26,780 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1715381694] [2020-09-04 22:07:26,781 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:26,782 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:26,782 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:26,782 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:26,782 INFO L87 Difference]: Start difference. First operand 179 states and 190 transitions. Second operand 4 states. [2020-09-04 22:07:27,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:27,083 INFO L93 Difference]: Finished difference Result 179 states and 190 transitions. [2020-09-04 22:07:27,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:27,084 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 45 [2020-09-04 22:07:27,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:27,085 INFO L225 Difference]: With dead ends: 179 [2020-09-04 22:07:27,086 INFO L226 Difference]: Without dead ends: 177 [2020-09-04 22:07:27,088 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 [2020-09-04 22:07:27,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 177 states. [2020-09-04 22:07:27,112 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 177 to 177. [2020-09-04 22:07:27,113 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-09-04 22:07:27,114 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 188 transitions. [2020-09-04 22:07:27,114 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 188 transitions. Word has length 45 [2020-09-04 22:07:27,115 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:27,115 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 188 transitions. [2020-09-04 22:07:27,115 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:27,115 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 188 transitions. [2020-09-04 22:07:27,116 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 50 [2020-09-04 22:07:27,117 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:27,117 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] [2020-09-04 22:07:27,118 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-09-04 22:07:27,118 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]=== [2020-09-04 22:07:27,118 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:27,119 INFO L82 PathProgramCache]: Analyzing trace with hash 11890970, now seen corresponding path program 1 times [2020-09-04 22:07:27,119 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:27,120 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1158910547] [2020-09-04 22:07:27,120 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:27,141 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:27,279 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:27,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:27,289 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:27,290 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1158910547] [2020-09-04 22:07:27,290 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:27,290 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2020-09-04 22:07:27,295 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949690926] [2020-09-04 22:07:27,296 INFO L459 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-09-04 22:07:27,296 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:27,296 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-09-04 22:07:27,297 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=56, Unknown=0, NotChecked=0, Total=72 [2020-09-04 22:07:27,297 INFO L87 Difference]: Start difference. First operand 177 states and 188 transitions. Second operand 9 states. [2020-09-04 22:07:28,011 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:28,011 INFO L93 Difference]: Finished difference Result 368 states and 393 transitions. [2020-09-04 22:07:28,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2020-09-04 22:07:28,012 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 49 [2020-09-04 22:07:28,012 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:28,015 INFO L225 Difference]: With dead ends: 368 [2020-09-04 22:07:28,015 INFO L226 Difference]: Without dead ends: 300 [2020-09-04 22:07:28,016 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=62, Invalid=178, Unknown=0, NotChecked=0, Total=240 [2020-09-04 22:07:28,017 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 300 states. [2020-09-04 22:07:28,043 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 300 to 196. [2020-09-04 22:07:28,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 196 states. [2020-09-04 22:07:28,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 196 states to 196 states and 208 transitions. [2020-09-04 22:07:28,045 INFO L78 Accepts]: Start accepts. Automaton has 196 states and 208 transitions. Word has length 49 [2020-09-04 22:07:28,045 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:28,045 INFO L479 AbstractCegarLoop]: Abstraction has 196 states and 208 transitions. [2020-09-04 22:07:28,046 INFO L480 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-09-04 22:07:28,046 INFO L276 IsEmpty]: Start isEmpty. Operand 196 states and 208 transitions. [2020-09-04 22:07:28,046 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 22:07:28,047 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:28,047 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] [2020-09-04 22:07:28,047 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-09-04 22:07:28,047 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]=== [2020-09-04 22:07:28,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:28,048 INFO L82 PathProgramCache]: Analyzing trace with hash 1643041774, now seen corresponding path program 1 times [2020-09-04 22:07:28,048 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:28,048 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1024492572] [2020-09-04 22:07:28,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:28,072 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:28,408 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:28,410 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:28,441 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:28,442 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1024492572] [2020-09-04 22:07:28,442 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:28,442 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [14] imperfect sequences [] total 14 [2020-09-04 22:07:28,443 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020522050] [2020-09-04 22:07:28,443 INFO L459 AbstractCegarLoop]: Interpolant automaton has 14 states [2020-09-04 22:07:28,443 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:28,444 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2020-09-04 22:07:28,444 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=27, Invalid=155, Unknown=0, NotChecked=0, Total=182 [2020-09-04 22:07:28,444 INFO L87 Difference]: Start difference. First operand 196 states and 208 transitions. Second operand 14 states. [2020-09-04 22:07:30,794 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:30,794 INFO L93 Difference]: Finished difference Result 589 states and 622 transitions. [2020-09-04 22:07:30,795 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 25 states. [2020-09-04 22:07:30,795 INFO L78 Accepts]: Start accepts. Automaton has 14 states. Word has length 54 [2020-09-04 22:07:30,795 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:30,798 INFO L225 Difference]: With dead ends: 589 [2020-09-04 22:07:30,798 INFO L226 Difference]: Without dead ends: 586 [2020-09-04 22:07:30,801 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 139 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=252, Invalid=804, Unknown=0, NotChecked=0, Total=1056 [2020-09-04 22:07:30,802 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 586 states. [2020-09-04 22:07:30,836 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 586 to 213. [2020-09-04 22:07:30,836 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 213 states. [2020-09-04 22:07:30,837 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 213 states to 213 states and 226 transitions. [2020-09-04 22:07:30,839 INFO L78 Accepts]: Start accepts. Automaton has 213 states and 226 transitions. Word has length 54 [2020-09-04 22:07:30,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:30,840 INFO L479 AbstractCegarLoop]: Abstraction has 213 states and 226 transitions. [2020-09-04 22:07:30,840 INFO L480 AbstractCegarLoop]: Interpolant automaton has 14 states. [2020-09-04 22:07:30,840 INFO L276 IsEmpty]: Start isEmpty. Operand 213 states and 226 transitions. [2020-09-04 22:07:30,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-09-04 22:07:30,841 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:30,841 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] [2020-09-04 22:07:30,841 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-09-04 22:07:30,842 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]=== [2020-09-04 22:07:30,842 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:30,842 INFO L82 PathProgramCache]: Analyzing trace with hash 358720869, now seen corresponding path program 1 times [2020-09-04 22:07:30,842 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:30,843 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1243341305] [2020-09-04 22:07:30,843 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:30,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:30,989 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:30,990 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,005 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2020-09-04 22:07:31,005 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1243341305] [2020-09-04 22:07:31,005 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:31,005 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-09-04 22:07:31,006 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [779921786] [2020-09-04 22:07:31,007 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-09-04 22:07:31,007 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:31,008 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-09-04 22:07:31,008 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-09-04 22:07:31,008 INFO L87 Difference]: Start difference. First operand 213 states and 226 transitions. Second operand 8 states. [2020-09-04 22:07:31,585 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:31,585 INFO L93 Difference]: Finished difference Result 297 states and 316 transitions. [2020-09-04 22:07:31,586 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-09-04 22:07:31,586 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 54 [2020-09-04 22:07:31,586 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:31,588 INFO L225 Difference]: With dead ends: 297 [2020-09-04 22:07:31,588 INFO L226 Difference]: Without dead ends: 267 [2020-09-04 22:07:31,588 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 [2020-09-04 22:07:31,589 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 267 states. [2020-09-04 22:07:31,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 267 to 248. [2020-09-04 22:07:31,636 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 248 states. [2020-09-04 22:07:31,637 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 248 states to 248 states and 268 transitions. [2020-09-04 22:07:31,638 INFO L78 Accepts]: Start accepts. Automaton has 248 states and 268 transitions. Word has length 54 [2020-09-04 22:07:31,638 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:31,638 INFO L479 AbstractCegarLoop]: Abstraction has 248 states and 268 transitions. [2020-09-04 22:07:31,638 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-09-04 22:07:31,639 INFO L276 IsEmpty]: Start isEmpty. Operand 248 states and 268 transitions. [2020-09-04 22:07:31,639 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-09-04 22:07:31,639 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:31,640 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] [2020-09-04 22:07:31,640 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-09-04 22:07:31,640 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]=== [2020-09-04 22:07:31,640 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:31,641 INFO L82 PathProgramCache]: Analyzing trace with hash 1270543956, now seen corresponding path program 1 times [2020-09-04 22:07:31,641 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:31,642 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [538445722] [2020-09-04 22:07:31,642 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:31,662 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,693 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 22:07:31,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 22:07:31,701 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 22:07:31,701 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [538445722] [2020-09-04 22:07:31,701 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 22:07:31,702 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-09-04 22:07:31,702 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1718486553] [2020-09-04 22:07:31,702 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-09-04 22:07:31,702 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 22:07:31,703 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-09-04 22:07:31,703 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-09-04 22:07:31,703 INFO L87 Difference]: Start difference. First operand 248 states and 268 transitions. Second operand 4 states. [2020-09-04 22:07:32,022 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 22:07:32,023 INFO L93 Difference]: Finished difference Result 254 states and 274 transitions. [2020-09-04 22:07:32,023 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-09-04 22:07:32,023 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 56 [2020-09-04 22:07:32,024 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 22:07:32,025 INFO L225 Difference]: With dead ends: 254 [2020-09-04 22:07:32,025 INFO L226 Difference]: Without dead ends: 249 [2020-09-04 22:07:32,025 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 [2020-09-04 22:07:32,026 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 249 states. [2020-09-04 22:07:32,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 249 to 249. [2020-09-04 22:07:32,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 249 states. [2020-09-04 22:07:32,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 249 states to 249 states and 269 transitions. [2020-09-04 22:07:32,069 INFO L78 Accepts]: Start accepts. Automaton has 249 states and 269 transitions. Word has length 56 [2020-09-04 22:07:32,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 22:07:32,071 INFO L479 AbstractCegarLoop]: Abstraction has 249 states and 269 transitions. [2020-09-04 22:07:32,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-09-04 22:07:32,072 INFO L276 IsEmpty]: Start isEmpty. Operand 249 states and 269 transitions. [2020-09-04 22:07:32,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2020-09-04 22:07:32,073 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 22:07:32,073 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] [2020-09-04 22:07:32,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2020-09-04 22:07:32,073 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]=== [2020-09-04 22:07:32,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 22:07:32,074 INFO L82 PathProgramCache]: Analyzing trace with hash 2002844954, now seen corresponding path program 1 times [2020-09-04 22:07:32,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 22:07:32,074 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1797610933] [2020-09-04 22:07:32,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 22:07:32,100 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:32,101 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:32,128 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 22:07:32,128 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 22:07:32,186 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 22:07:32,186 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 22:07:32,187 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable12 [2020-09-04 22:07:32,264 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 10:07:32 BoogieIcfgContainer [2020-09-04 22:07:32,264 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 22:07:32,268 INFO L168 Benchmark]: Toolchain (without parser) took 12706.66 ms. Allocated memory was 145.2 MB in the beginning and 346.0 MB in the end (delta: 200.8 MB). Free memory was 100.7 MB in the beginning and 274.8 MB in the end (delta: -174.1 MB). Peak memory consumption was 26.7 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,269 INFO L168 Benchmark]: CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,269 INFO L168 Benchmark]: CACSL2BoogieTranslator took 763.94 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 100.3 MB in the beginning and 170.6 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,270 INFO L168 Benchmark]: Boogie Preprocessor took 89.59 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,271 INFO L168 Benchmark]: RCFGBuilder took 899.61 ms. Allocated memory is still 203.4 MB. Free memory was 167.2 MB in the beginning and 103.7 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. [2020-09-04 22:07:32,272 INFO L168 Benchmark]: TraceAbstraction took 10947.71 ms. Allocated memory was 203.4 MB in the beginning and 346.0 MB in the end (delta: 142.6 MB). Free memory was 103.7 MB in the beginning and 274.8 MB in the end (delta: -171.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 22:07:32,275 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27 ms. Allocated memory is still 145.2 MB. Free memory was 120.7 MB in the beginning and 120.5 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 763.94 ms. Allocated memory was 145.2 MB in the beginning and 203.4 MB in the end (delta: 58.2 MB). Free memory was 100.3 MB in the beginning and 170.6 MB in the end (delta: -70.3 MB). Peak memory consumption was 23.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 89.59 ms. Allocated memory is still 203.4 MB. Free memory was 170.6 MB in the beginning and 167.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 899.61 ms. Allocated memory is still 203.4 MB. Free memory was 167.2 MB in the beginning and 103.7 MB in the end (delta: 63.5 MB). Peak memory consumption was 63.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 10947.71 ms. Allocated memory was 203.4 MB in the beginning and 346.0 MB in the end (delta: 142.6 MB). Free memory was 103.7 MB in the beginning and 274.8 MB in the end (delta: -171.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1029]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L992] SLL* list = malloc(sizeof(SLL)); VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L993] list->next = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L994] list->prev = ((void*)0) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(!(list != ((void*)0))) VAL [list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] COND FALSE !(__VERIFIER_nondet_int()) VAL [__VERIFIER_nondet_int()=0, list={-1:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner = malloc(sizeof(SLL)) VAL [list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner->next = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] list->inner->inner = ((void*)0) VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] EXPR list->inner VAL [list={-1:0}, list->inner={-2:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L995] 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}] [L995] 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}] [L997] SLL* end = list; VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1000] 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}] [L1011] end = ((void*)0) VAL [end={0:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1012] end = list VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1015] COND FALSE !(!(((void*)0) != end)) VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1017] COND TRUE ((void*)0) != end VAL [end={-1:0}, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1019] int len = 0; VAL [end={-1:0}, len=0, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1020] 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}] [L1020] 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}] [L1021] 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}] [L1023] 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}] [L1024] len = 1 VAL [end={-1:0}, inner={-2:0}, len=1, list={-1:0}, malloc(sizeof(SLL))={-2:0}, malloc(sizeof(SLL))={-1:0}] [L1027] 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}] [L1028] 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}] [L1028] 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}] [L1029] 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}] [L1029] COND TRUE !(((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}] [L1029] __VERIFIER_error() VAL [end={-1:0}, inner={-2:0}, len=1, 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: 10.7s, OverallIterations: 13, TraceHistogramMax: 1, AutomataDifference: 7.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 1960 SDtfs, 3416 SDslu, 5944 SDs, 0 SdLazy, 4123 SolverSat, 111 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 4.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 148 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 111 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 2.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=249occurred in iteration=12, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.4s AutomataMinimizationTime, 12 MinimizatonAttempts, 922 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.3s SatisfiabilityAnalysisTime, 1.4s InterpolantComputationTime, 534 NumberOfCodeBlocks, 534 NumberOfCodeBlocksAsserted, 13 NumberOfCheckSat, 464 ConstructedInterpolants, 0 QuantifiedInterpolants, 148308 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 12 InterpolantComputations, 12 PerfectInterpolantSequences, 1/1 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...