/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 -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 13:30:14,485 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 13:30:14,487 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 13:30:14,499 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 13:30:14,499 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 13:30:14,500 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 13:30:14,501 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 13:30:14,503 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 13:30:14,505 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 13:30:14,506 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 13:30:14,506 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 13:30:14,507 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 13:30:14,508 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 13:30:14,509 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 13:30:14,510 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 13:30:14,511 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 13:30:14,512 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 13:30:14,512 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 13:30:14,514 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 13:30:14,516 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 13:30:14,517 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 13:30:14,518 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 13:30:14,519 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 13:30:14,520 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 13:30:14,522 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 13:30:14,523 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 13:30:14,523 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 13:30:14,524 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 13:30:14,524 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 13:30:14,525 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 13:30:14,526 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 13:30:14,526 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 13:30:14,527 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 13:30:14,528 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 13:30:14,529 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 13:30:14,529 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 13:30:14,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 13:30:14,530 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 13:30:14,530 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 13:30:14,531 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 13:30:14,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 13:30:14,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-17 13:30:14,541 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 13:30:14,541 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 13:30:14,542 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 13:30:14,543 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 13:30:14,543 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 13:30:14,543 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 13:30:14,543 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 13:30:14,543 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 13:30:14,544 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 13:30:14,544 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 13:30:14,544 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 13:30:14,544 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 13:30:14,545 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 13:30:14,545 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 13:30:14,545 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 13:30:14,545 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-17 13:30:14,545 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 13:30:14,546 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 13:30:14,546 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:14,546 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 13:30:14,546 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-17 13:30:14,546 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 13:30:14,547 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-17 13:30:14,806 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 13:30:14,826 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 13:30:14,829 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 13:30:14,831 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 13:30:14,831 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 13:30:14,832 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-07-17 13:30:14,906 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6550e737e/c0bda8fe0eb04b4ca53ca12d57b0d9e1/FLAGfe5434b21 [2020-07-17 13:30:15,409 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 13:30:15,409 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-07-17 13:30:15,422 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6550e737e/c0bda8fe0eb04b4ca53ca12d57b0d9e1/FLAGfe5434b21 [2020-07-17 13:30:15,743 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6550e737e/c0bda8fe0eb04b4ca53ca12d57b0d9e1 [2020-07-17 13:30:15,751 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 13:30:15,753 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 13:30:15,754 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:15,755 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 13:30:15,760 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 13:30:15,761 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:15" (1/1) ... [2020-07-17 13:30:15,764 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63714e08 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:15, skipping insertion in model container [2020-07-17 13:30:15,765 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 01:30:15" (1/1) ... [2020-07-17 13:30:15,772 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 13:30:15,825 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 13:30:16,281 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:16,299 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 13:30:16,369 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 13:30:16,433 INFO L208 MainTranslator]: Completed translation [2020-07-17 13:30:16,433 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16 WrapperNode [2020-07-17 13:30:16,433 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 13:30:16,434 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 13:30:16,434 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 13:30:16,434 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 13:30:16,448 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,448 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,478 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,479 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,500 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,503 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... [2020-07-17 13:30:16,510 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 13:30:16,510 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 13:30:16,510 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 13:30:16,510 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 13:30:16,511 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 13:30:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 13:30:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 13:30:16,568 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-17 13:30:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-17 13:30:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-17 13:30:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-07-17 13:30:16,569 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 13:30:16,569 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 13:30:16,570 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 13:30:16,571 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 13:30:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 13:30:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 13:30:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 13:30:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 13:30:16,572 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 13:30:16,573 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 13:30:16,574 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 13:30:16,575 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 13:30:16,576 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 13:30:16,577 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 13:30:16,578 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 13:30:16,579 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 13:30:16,580 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 13:30:16,581 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 13:30:16,582 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 13:30:16,583 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 13:30:16,584 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 13:30:16,585 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 13:30:16,586 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 13:30:16,587 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 13:30:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 13:30:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 13:30:16,588 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 13:30:16,933 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-17 13:30:17,195 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 13:30:17,195 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-07-17 13:30:17,200 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:17 BoogieIcfgContainer [2020-07-17 13:30:17,200 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 13:30:17,202 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 13:30:17,202 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 13:30:17,205 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 13:30:17,205 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 01:30:15" (1/3) ... [2020-07-17 13:30:17,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b29d5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:17, skipping insertion in model container [2020-07-17 13:30:17,206 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 01:30:16" (2/3) ... [2020-07-17 13:30:17,206 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4b29d5a8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 01:30:17, skipping insertion in model container [2020-07-17 13:30:17,207 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 01:30:17" (3/3) ... [2020-07-17 13:30:17,208 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-07-17 13:30:17,218 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-17 13:30:17,226 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-17 13:30:17,239 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-17 13:30:17,260 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 13:30:17,260 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 13:30:17,260 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-17 13:30:17,261 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 13:30:17,261 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 13:30:17,261 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 13:30:17,261 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 13:30:17,261 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 13:30:17,277 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states. [2020-07-17 13:30:17,288 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 13:30:17,289 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:17,290 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:17,290 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:17,296 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:17,296 INFO L82 PathProgramCache]: Analyzing trace with hash 136898680, now seen corresponding path program 1 times [2020-07-17 13:30:17,304 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:17,305 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1246645605] [2020-07-17 13:30:17,305 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:17,424 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,522 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:17,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:17,544 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:17,548 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1246645605] [2020-07-17 13:30:17,552 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:17,553 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 13:30:17,553 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [40310176] [2020-07-17 13:30:17,559 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 13:30:17,559 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:17,574 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 13:30:17,574 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 13:30:17,577 INFO L87 Difference]: Start difference. First operand 101 states. Second operand 4 states. [2020-07-17 13:30:17,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:17,900 INFO L93 Difference]: Finished difference Result 230 states and 265 transitions. [2020-07-17 13:30:17,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 13:30:17,902 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 32 [2020-07-17 13:30:17,903 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:17,914 INFO L225 Difference]: With dead ends: 230 [2020-07-17 13:30:17,914 INFO L226 Difference]: Without dead ends: 153 [2020-07-17 13:30:17,918 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-07-17 13:30:17,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 153 states. [2020-07-17 13:30:17,964 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 153 to 92. [2020-07-17 13:30:17,966 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-17 13:30:17,968 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2020-07-17 13:30:17,970 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 32 [2020-07-17 13:30:17,971 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:17,971 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2020-07-17 13:30:17,971 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 13:30:17,971 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2020-07-17 13:30:17,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2020-07-17 13:30:17,973 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:17,974 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:17,974 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 13:30:17,974 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:17,975 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:17,975 INFO L82 PathProgramCache]: Analyzing trace with hash 272796752, now seen corresponding path program 1 times [2020-07-17 13:30:17,975 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:17,976 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2037191906] [2020-07-17 13:30:17,976 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:17,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:18,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:18,070 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:18,106 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:18,604 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:18,604 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2037191906] [2020-07-17 13:30:18,605 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:18,605 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 13:30:18,605 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [362425790] [2020-07-17 13:30:18,606 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 13:30:18,606 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:18,607 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 13:30:18,607 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=67, Invalid=239, Unknown=0, NotChecked=0, Total=306 [2020-07-17 13:30:18,608 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand 18 states. [2020-07-17 13:30:18,923 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:18,923 INFO L93 Difference]: Finished difference Result 172 states and 190 transitions. [2020-07-17 13:30:18,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-07-17 13:30:18,924 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 32 [2020-07-17 13:30:18,924 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:18,926 INFO L225 Difference]: With dead ends: 172 [2020-07-17 13:30:18,926 INFO L226 Difference]: Without dead ends: 112 [2020-07-17 13:30:18,928 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 20 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 69 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=91, Invalid=371, Unknown=0, NotChecked=0, Total=462 [2020-07-17 13:30:18,928 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-17 13:30:18,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 93. [2020-07-17 13:30:18,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 93 states. [2020-07-17 13:30:18,941 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2020-07-17 13:30:18,942 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 32 [2020-07-17 13:30:18,942 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:18,942 INFO L479 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2020-07-17 13:30:18,942 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 13:30:18,942 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2020-07-17 13:30:18,944 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-07-17 13:30:18,944 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:18,944 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:18,945 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 13:30:18,945 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:18,945 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:18,945 INFO L82 PathProgramCache]: Analyzing trace with hash -54471897, now seen corresponding path program 1 times [2020-07-17 13:30:18,945 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:18,946 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1362932559] [2020-07-17 13:30:18,946 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:19,019 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:19,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:19,108 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:19,165 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:19,555 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:19,556 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1362932559] [2020-07-17 13:30:19,556 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:19,557 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [19] imperfect sequences [] total 19 [2020-07-17 13:30:19,557 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1587226605] [2020-07-17 13:30:19,557 INFO L459 AbstractCegarLoop]: Interpolant automaton has 20 states [2020-07-17 13:30:19,558 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:19,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2020-07-17 13:30:19,558 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=72, Invalid=308, Unknown=0, NotChecked=0, Total=380 [2020-07-17 13:30:19,558 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand 20 states. [2020-07-17 13:30:19,879 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:19,879 INFO L93 Difference]: Finished difference Result 193 states and 213 transitions. [2020-07-17 13:30:19,880 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-17 13:30:19,880 INFO L78 Accepts]: Start accepts. Automaton has 20 states. Word has length 51 [2020-07-17 13:30:19,881 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:19,882 INFO L225 Difference]: With dead ends: 193 [2020-07-17 13:30:19,882 INFO L226 Difference]: Without dead ends: 133 [2020-07-17 13:30:19,883 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 114 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=103, Invalid=547, Unknown=0, NotChecked=0, Total=650 [2020-07-17 13:30:19,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 133 states. [2020-07-17 13:30:19,895 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 133 to 114. [2020-07-17 13:30:19,895 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-17 13:30:19,897 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 125 transitions. [2020-07-17 13:30:19,897 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 125 transitions. Word has length 51 [2020-07-17 13:30:19,897 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:19,898 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 125 transitions. [2020-07-17 13:30:19,898 INFO L480 AbstractCegarLoop]: Interpolant automaton has 20 states. [2020-07-17 13:30:19,898 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 125 transitions. [2020-07-17 13:30:19,900 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 71 [2020-07-17 13:30:19,900 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:19,900 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:19,901 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 13:30:19,901 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:19,901 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:19,901 INFO L82 PathProgramCache]: Analyzing trace with hash -586426640, now seen corresponding path program 2 times [2020-07-17 13:30:19,902 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:19,902 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1693794649] [2020-07-17 13:30:19,902 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:19,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:20,016 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:20,070 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:20,070 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:20,071 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1693794649] [2020-07-17 13:30:20,071 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:20,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-17 13:30:20,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [201605090] [2020-07-17 13:30:20,072 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-17 13:30:20,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:20,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-17 13:30:20,073 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-17 13:30:20,073 INFO L87 Difference]: Start difference. First operand 114 states and 125 transitions. Second operand 7 states. [2020-07-17 13:30:20,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:20,324 INFO L93 Difference]: Finished difference Result 195 states and 215 transitions. [2020-07-17 13:30:20,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-17 13:30:20,325 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 70 [2020-07-17 13:30:20,325 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:20,326 INFO L225 Difference]: With dead ends: 195 [2020-07-17 13:30:20,327 INFO L226 Difference]: Without dead ends: 114 [2020-07-17 13:30:20,328 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2020-07-17 13:30:20,328 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2020-07-17 13:30:20,339 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 114. [2020-07-17 13:30:20,340 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 114 states. [2020-07-17 13:30:20,341 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 124 transitions. [2020-07-17 13:30:20,341 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 124 transitions. Word has length 70 [2020-07-17 13:30:20,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:20,342 INFO L479 AbstractCegarLoop]: Abstraction has 114 states and 124 transitions. [2020-07-17 13:30:20,342 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-17 13:30:20,342 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 124 transitions. [2020-07-17 13:30:20,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 72 [2020-07-17 13:30:20,343 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:20,344 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:20,344 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 13:30:20,344 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:20,344 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:20,345 INFO L82 PathProgramCache]: Analyzing trace with hash -1356086606, now seen corresponding path program 1 times [2020-07-17 13:30:20,345 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:20,345 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1176977347] [2020-07-17 13:30:20,345 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:20,407 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:20,476 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:20,507 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:20,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:21,016 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:21,016 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1176977347] [2020-07-17 13:30:21,016 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:21,017 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [21] imperfect sequences [] total 21 [2020-07-17 13:30:21,017 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1729503727] [2020-07-17 13:30:21,017 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-17 13:30:21,018 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:21,018 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-17 13:30:21,020 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=79, Invalid=383, Unknown=0, NotChecked=0, Total=462 [2020-07-17 13:30:21,021 INFO L87 Difference]: Start difference. First operand 114 states and 124 transitions. Second operand 22 states. [2020-07-17 13:30:21,339 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:21,339 INFO L93 Difference]: Finished difference Result 214 states and 233 transitions. [2020-07-17 13:30:21,340 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2020-07-17 13:30:21,340 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 71 [2020-07-17 13:30:21,340 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:21,343 INFO L225 Difference]: With dead ends: 214 [2020-07-17 13:30:21,343 INFO L226 Difference]: Without dead ends: 154 [2020-07-17 13:30:21,345 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 28 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 175 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=129, Invalid=741, Unknown=0, NotChecked=0, Total=870 [2020-07-17 13:30:21,345 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 154 states. [2020-07-17 13:30:21,371 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 154 to 135. [2020-07-17 13:30:21,371 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 135 states. [2020-07-17 13:30:21,372 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 135 states to 135 states and 146 transitions. [2020-07-17 13:30:21,373 INFO L78 Accepts]: Start accepts. Automaton has 135 states and 146 transitions. Word has length 71 [2020-07-17 13:30:21,373 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:21,374 INFO L479 AbstractCegarLoop]: Abstraction has 135 states and 146 transitions. [2020-07-17 13:30:21,376 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-17 13:30:21,376 INFO L276 IsEmpty]: Start isEmpty. Operand 135 states and 146 transitions. [2020-07-17 13:30:21,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 92 [2020-07-17 13:30:21,378 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:21,379 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:21,379 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-17 13:30:21,379 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:21,380 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:21,380 INFO L82 PathProgramCache]: Analyzing trace with hash -1395228995, now seen corresponding path program 2 times [2020-07-17 13:30:21,380 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:21,380 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [37113479] [2020-07-17 13:30:21,381 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:21,463 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:21,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:21,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:21,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:22,081 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:22,082 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [37113479] [2020-07-17 13:30:22,082 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:22,083 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [23] imperfect sequences [] total 23 [2020-07-17 13:30:22,083 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008514506] [2020-07-17 13:30:22,084 INFO L459 AbstractCegarLoop]: Interpolant automaton has 24 states [2020-07-17 13:30:22,084 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:22,084 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2020-07-17 13:30:22,085 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=88, Invalid=464, Unknown=0, NotChecked=0, Total=552 [2020-07-17 13:30:22,085 INFO L87 Difference]: Start difference. First operand 135 states and 146 transitions. Second operand 24 states. [2020-07-17 13:30:22,517 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:22,517 INFO L93 Difference]: Finished difference Result 235 states and 255 transitions. [2020-07-17 13:30:22,518 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 18 states. [2020-07-17 13:30:22,518 INFO L78 Accepts]: Start accepts. Automaton has 24 states. Word has length 91 [2020-07-17 13:30:22,519 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:22,520 INFO L225 Difference]: With dead ends: 235 [2020-07-17 13:30:22,521 INFO L226 Difference]: Without dead ends: 175 [2020-07-17 13:30:22,523 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 242 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=165, Invalid=957, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 13:30:22,523 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 175 states. [2020-07-17 13:30:22,535 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 175 to 156. [2020-07-17 13:30:22,535 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 156 states. [2020-07-17 13:30:22,536 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 156 states to 156 states and 168 transitions. [2020-07-17 13:30:22,536 INFO L78 Accepts]: Start accepts. Automaton has 156 states and 168 transitions. Word has length 91 [2020-07-17 13:30:22,537 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:22,537 INFO L479 AbstractCegarLoop]: Abstraction has 156 states and 168 transitions. [2020-07-17 13:30:22,537 INFO L480 AbstractCegarLoop]: Interpolant automaton has 24 states. [2020-07-17 13:30:22,537 INFO L276 IsEmpty]: Start isEmpty. Operand 156 states and 168 transitions. [2020-07-17 13:30:22,538 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 112 [2020-07-17 13:30:22,539 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:22,539 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:22,539 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-17 13:30:22,539 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:22,540 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:22,540 INFO L82 PathProgramCache]: Analyzing trace with hash 274581320, now seen corresponding path program 3 times [2020-07-17 13:30:22,540 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:22,540 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1527096088] [2020-07-17 13:30:22,540 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:22,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:22,634 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:22,689 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:22,913 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:23,369 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:23,370 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1527096088] [2020-07-17 13:30:23,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:23,370 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [25] imperfect sequences [] total 25 [2020-07-17 13:30:23,370 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [432544927] [2020-07-17 13:30:23,371 INFO L459 AbstractCegarLoop]: Interpolant automaton has 26 states [2020-07-17 13:30:23,371 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:23,371 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2020-07-17 13:30:23,372 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=99, Invalid=551, Unknown=0, NotChecked=0, Total=650 [2020-07-17 13:30:23,372 INFO L87 Difference]: Start difference. First operand 156 states and 168 transitions. Second operand 26 states. [2020-07-17 13:30:23,891 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:23,892 INFO L93 Difference]: Finished difference Result 256 states and 277 transitions. [2020-07-17 13:30:23,892 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-17 13:30:23,892 INFO L78 Accepts]: Start accepts. Automaton has 26 states. Word has length 111 [2020-07-17 13:30:23,893 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:23,894 INFO L225 Difference]: With dead ends: 256 [2020-07-17 13:30:23,894 INFO L226 Difference]: Without dead ends: 196 [2020-07-17 13:30:23,895 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 36 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 315 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=211, Invalid=1195, Unknown=0, NotChecked=0, Total=1406 [2020-07-17 13:30:23,896 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2020-07-17 13:30:23,908 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 177. [2020-07-17 13:30:23,908 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 177 states. [2020-07-17 13:30:23,909 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 177 states to 177 states and 190 transitions. [2020-07-17 13:30:23,909 INFO L78 Accepts]: Start accepts. Automaton has 177 states and 190 transitions. Word has length 111 [2020-07-17 13:30:23,910 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:23,910 INFO L479 AbstractCegarLoop]: Abstraction has 177 states and 190 transitions. [2020-07-17 13:30:23,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 26 states. [2020-07-17 13:30:23,910 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states and 190 transitions. [2020-07-17 13:30:23,912 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 132 [2020-07-17 13:30:23,912 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:23,912 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:23,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-17 13:30:23,912 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:23,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:23,913 INFO L82 PathProgramCache]: Analyzing trace with hash 1182686291, now seen corresponding path program 4 times [2020-07-17 13:30:23,913 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:23,913 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1235686981] [2020-07-17 13:30:23,913 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:23,987 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:24,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:24,131 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:24,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:24,411 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:24,411 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1235686981] [2020-07-17 13:30:24,411 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:24,411 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 13:30:24,411 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1025373090] [2020-07-17 13:30:24,412 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 13:30:24,412 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:24,412 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 13:30:24,412 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-07-17 13:30:24,412 INFO L87 Difference]: Start difference. First operand 177 states and 190 transitions. Second operand 17 states. [2020-07-17 13:30:25,252 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:25,252 INFO L93 Difference]: Finished difference Result 308 states and 334 transitions. [2020-07-17 13:30:25,253 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 13:30:25,253 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 131 [2020-07-17 13:30:25,253 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:25,255 INFO L225 Difference]: With dead ends: 308 [2020-07-17 13:30:25,256 INFO L226 Difference]: Without dead ends: 253 [2020-07-17 13:30:25,257 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-07-17 13:30:25,257 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-17 13:30:25,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 183. [2020-07-17 13:30:25,277 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 183 states. [2020-07-17 13:30:25,278 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 183 states to 183 states and 197 transitions. [2020-07-17 13:30:25,278 INFO L78 Accepts]: Start accepts. Automaton has 183 states and 197 transitions. Word has length 131 [2020-07-17 13:30:25,278 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:25,278 INFO L479 AbstractCegarLoop]: Abstraction has 183 states and 197 transitions. [2020-07-17 13:30:25,279 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 13:30:25,279 INFO L276 IsEmpty]: Start isEmpty. Operand 183 states and 197 transitions. [2020-07-17 13:30:25,280 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 134 [2020-07-17 13:30:25,280 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:25,280 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:25,281 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-17 13:30:25,281 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:25,281 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:25,281 INFO L82 PathProgramCache]: Analyzing trace with hash -1200683152, now seen corresponding path program 1 times [2020-07-17 13:30:25,281 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:25,282 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [45032853] [2020-07-17 13:30:25,282 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:25,366 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:25,485 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:25,532 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:25,880 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:25,881 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:25,882 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [45032853] [2020-07-17 13:30:25,882 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:25,883 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-17 13:30:25,883 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [60128147] [2020-07-17 13:30:25,883 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-17 13:30:25,884 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:25,884 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-17 13:30:25,884 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=35, Invalid=271, Unknown=0, NotChecked=0, Total=306 [2020-07-17 13:30:25,885 INFO L87 Difference]: Start difference. First operand 183 states and 197 transitions. Second operand 18 states. [2020-07-17 13:30:27,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:27,100 INFO L93 Difference]: Finished difference Result 286 states and 310 transitions. [2020-07-17 13:30:27,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-17 13:30:27,101 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 133 [2020-07-17 13:30:27,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:27,102 INFO L225 Difference]: With dead ends: 286 [2020-07-17 13:30:27,102 INFO L226 Difference]: Without dead ends: 231 [2020-07-17 13:30:27,103 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 102 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=171, Invalid=951, Unknown=0, NotChecked=0, Total=1122 [2020-07-17 13:30:27,103 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 231 states. [2020-07-17 13:30:27,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 231 to 187. [2020-07-17 13:30:27,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 187 states. [2020-07-17 13:30:27,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 187 states to 187 states and 201 transitions. [2020-07-17 13:30:27,124 INFO L78 Accepts]: Start accepts. Automaton has 187 states and 201 transitions. Word has length 133 [2020-07-17 13:30:27,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:27,124 INFO L479 AbstractCegarLoop]: Abstraction has 187 states and 201 transitions. [2020-07-17 13:30:27,125 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-17 13:30:27,125 INFO L276 IsEmpty]: Start isEmpty. Operand 187 states and 201 transitions. [2020-07-17 13:30:27,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-17 13:30:27,126 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:27,126 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:27,127 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-17 13:30:27,127 INFO L427 AbstractCegarLoop]: === Iteration 10 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:27,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:27,127 INFO L82 PathProgramCache]: Analyzing trace with hash 2062394754, now seen corresponding path program 1 times [2020-07-17 13:30:27,127 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:27,128 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1530837570] [2020-07-17 13:30:27,128 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:27,177 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:27,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:27,305 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 13:30:27,573 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-17 13:30:27,574 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:27,583 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1530837570] [2020-07-17 13:30:27,583 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 13:30:27,584 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [17] imperfect sequences [] total 17 [2020-07-17 13:30:27,584 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1949426234] [2020-07-17 13:30:27,584 INFO L459 AbstractCegarLoop]: Interpolant automaton has 17 states [2020-07-17 13:30:27,585 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-17 13:30:27,585 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 17 interpolants. [2020-07-17 13:30:27,586 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=239, Unknown=0, NotChecked=0, Total=272 [2020-07-17 13:30:27,586 INFO L87 Difference]: Start difference. First operand 187 states and 201 transitions. Second operand 17 states. [2020-07-17 13:30:28,324 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 13:30:28,324 INFO L93 Difference]: Finished difference Result 281 states and 301 transitions. [2020-07-17 13:30:28,325 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 22 states. [2020-07-17 13:30:28,325 INFO L78 Accepts]: Start accepts. Automaton has 17 states. Word has length 135 [2020-07-17 13:30:28,326 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 13:30:28,327 INFO L225 Difference]: With dead ends: 281 [2020-07-17 13:30:28,327 INFO L226 Difference]: Without dead ends: 253 [2020-07-17 13:30:28,329 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 18 SyntacticMatches, 4 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 92 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=165, Invalid=827, Unknown=0, NotChecked=0, Total=992 [2020-07-17 13:30:28,329 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 253 states. [2020-07-17 13:30:28,355 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 253 to 195. [2020-07-17 13:30:28,355 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 195 states. [2020-07-17 13:30:28,356 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 195 states to 195 states and 209 transitions. [2020-07-17 13:30:28,357 INFO L78 Accepts]: Start accepts. Automaton has 195 states and 209 transitions. Word has length 135 [2020-07-17 13:30:28,357 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 13:30:28,357 INFO L479 AbstractCegarLoop]: Abstraction has 195 states and 209 transitions. [2020-07-17 13:30:28,358 INFO L480 AbstractCegarLoop]: Interpolant automaton has 17 states. [2020-07-17 13:30:28,358 INFO L276 IsEmpty]: Start isEmpty. Operand 195 states and 209 transitions. [2020-07-17 13:30:28,359 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 136 [2020-07-17 13:30:28,359 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 13:30:28,360 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 13:30:28,360 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-07-17 13:30:28,360 INFO L427 AbstractCegarLoop]: === Iteration 11 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 13:30:28,360 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 13:30:28,361 INFO L82 PathProgramCache]: Analyzing trace with hash -414346707, now seen corresponding path program 1 times [2020-07-17 13:30:28,361 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-17 13:30:28,361 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [708205054] [2020-07-17 13:30:28,361 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 13:30:28,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:30:28,582 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 13:30:28,633 INFO L192 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-17 13:30:28,633 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-17 13:30:28,634 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 13:30:28,634 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2020-07-17 13:30:28,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 01:30:28 BoogieIcfgContainer [2020-07-17 13:30:28,656 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 13:30:28,659 INFO L168 Benchmark]: Toolchain (without parser) took 12905.80 ms. Allocated memory was 138.4 MB in the beginning and 385.4 MB in the end (delta: 246.9 MB). Free memory was 101.9 MB in the beginning and 341.6 MB in the end (delta: -239.7 MB). Peak memory consumption was 264.6 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,659 INFO L168 Benchmark]: CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,660 INFO L168 Benchmark]: CACSL2BoogieTranslator took 679.24 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,661 INFO L168 Benchmark]: Boogie Preprocessor took 75.68 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 165.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,662 INFO L168 Benchmark]: RCFGBuilder took 690.44 ms. Allocated memory is still 201.9 MB. Free memory was 165.8 MB in the beginning and 114.8 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,663 INFO L168 Benchmark]: TraceAbstraction took 11454.70 ms. Allocated memory was 201.9 MB in the beginning and 385.4 MB in the end (delta: 183.5 MB). Free memory was 114.2 MB in the beginning and 341.6 MB in the end (delta: -227.4 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. [2020-07-17 13:30:28,666 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.26 ms. Allocated memory is still 138.4 MB. Free memory was 121.8 MB in the beginning and 121.6 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 679.24 ms. Allocated memory was 138.4 MB in the beginning and 201.9 MB in the end (delta: 63.4 MB). Free memory was 101.5 MB in the beginning and 168.4 MB in the end (delta: -67.0 MB). Peak memory consumption was 26.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 75.68 ms. Allocated memory is still 201.9 MB. Free memory was 168.4 MB in the beginning and 165.8 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 690.44 ms. Allocated memory is still 201.9 MB. Free memory was 165.8 MB in the beginning and 114.8 MB in the end (delta: 50.9 MB). Peak memory consumption was 50.9 MB. Max. memory is 7.1 GB. * TraceAbstraction took 11454.70 ms. Allocated memory was 201.9 MB in the beginning and 385.4 MB in the end (delta: 183.5 MB). Free memory was 114.2 MB in the beginning and 341.6 MB in the end (delta: -227.4 MB). Peak memory consumption was 213.4 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 605]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L588] const int len = 5; [L589] CALL, EXPR dll_create(len) [L568] DLL head = ((void *)0); [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND FALSE !(\read(head)) [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND TRUE len > 0 [L570] DLL new_head = (DLL) malloc(sizeof(struct node)); [L571] COND FALSE !(((void *)0) == new_head) [L574] new_head->data_0 = 0 [L575] new_head->data_1 = 0 [L576] EXPR __VERIFIER_nondet_int() == len? 1 : 0 [L576] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L577] new_head->next = head [L578] new_head->prev = ((void *)0) [L579] COND TRUE \read(head) [L580] head->prev = new_head [L582] head = new_head [L583] len-- [L569] COND FALSE !(len > 0) [L585] return head; [L589] RET, EXPR dll_create(len) [L589] DLL head = dll_create(len); [L590] head->next [L590] COND TRUE head->next [L591] EXPR head->data_0 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] EXPR head->data_1 [L591] EXPR 0 != head->data_0 || 0 != head->data_1 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] EXPR head->data_2 [L591] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L591] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L605] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 7 procedures, 112 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.3s, OverallIterations: 11, TraceHistogramMax: 5, AutomataDifference: 5.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 920 SDtfs, 1522 SDslu, 5989 SDs, 0 SdLazy, 3453 SolverSat, 239 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 414 GetRequests, 163 SyntacticMatches, 8 SemanticMatches, 243 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1203 ImplicationChecksByTransitivity, 4.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=195occurred in iteration=10, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.2s AutomataMinimizationTime, 10 MinimizatonAttempts, 328 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...