/usr/bin/java -ea -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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-267fbe0 [2020-07-17 22:31:32,368 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-17 22:31:32,371 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-17 22:31:32,385 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-17 22:31:32,385 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-17 22:31:32,386 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-17 22:31:32,388 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-17 22:31:32,392 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-17 22:31:32,396 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-17 22:31:32,398 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-17 22:31:32,401 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-17 22:31:32,402 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-17 22:31:32,403 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-17 22:31:32,405 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-17 22:31:32,413 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-17 22:31:32,415 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-17 22:31:32,416 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-17 22:31:32,419 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-17 22:31:32,421 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-17 22:31:32,426 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-17 22:31:32,429 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-17 22:31:32,434 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-17 22:31:32,436 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-17 22:31:32,437 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-17 22:31:32,443 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-17 22:31:32,443 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-17 22:31:32,444 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-17 22:31:32,448 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-17 22:31:32,448 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-17 22:31:32,451 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-17 22:31:32,451 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-17 22:31:32,453 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-17 22:31:32,454 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-17 22:31:32,455 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-17 22:31:32,459 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-17 22:31:32,459 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-17 22:31:32,462 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-17 22:31:32,462 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-17 22:31:32,463 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-17 22:31:32,464 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-17 22:31:32,465 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-17 22:31:32,466 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-07-17 22:31:32,507 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-17 22:31:32,508 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-17 22:31:32,515 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-07-17 22:31:32,516 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-07-17 22:31:32,516 INFO L138 SettingsManager]: * Use SBE=true [2020-07-17 22:31:32,516 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-17 22:31:32,516 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-17 22:31:32,516 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-17 22:31:32,517 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-17 22:31:32,517 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-17 22:31:32,517 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-17 22:31:32,517 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-17 22:31:32,519 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-17 22:31:32,520 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-17 22:31:32,520 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-17 22:31:32,520 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-17 22:31:32,520 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-17 22:31:32,520 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-17 22:31:32,520 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-17 22:31:32,521 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-07-17 22:31:32,521 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-07-17 22:31:32,522 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-07-17 22:31:32,522 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-17 22:31:32,522 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-07-17 22:31:32,522 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2020-07-17 22:31:32,878 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-17 22:31:32,894 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-17 22:31:32,897 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-17 22:31:32,899 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-17 22:31:32,899 INFO L275 PluginConnector]: CDTParser initialized [2020-07-17 22:31:32,900 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-17 22:31:32,966 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b081af2e9/1839d6a048b341959577a279c2473bf8/FLAG53cfaf22a [2020-07-17 22:31:33,553 INFO L306 CDTParser]: Found 1 translation units. [2020-07-17 22:31:33,554 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-circular-1.i [2020-07-17 22:31:33,570 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b081af2e9/1839d6a048b341959577a279c2473bf8/FLAG53cfaf22a [2020-07-17 22:31:33,877 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b081af2e9/1839d6a048b341959577a279c2473bf8 [2020-07-17 22:31:33,887 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-17 22:31:33,891 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-17 22:31:33,892 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-17 22:31:33,892 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-17 22:31:33,899 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-17 22:31:33,901 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:31:33" (1/1) ... [2020-07-17 22:31:33,906 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@e395755 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:33, skipping insertion in model container [2020-07-17 22:31:33,906 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.07 10:31:33" (1/1) ... [2020-07-17 22:31:33,916 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-17 22:31:33,975 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-17 22:31:34,487 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:31:34,498 INFO L203 MainTranslator]: Completed pre-run [2020-07-17 22:31:34,543 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-17 22:31:34,596 INFO L208 MainTranslator]: Completed translation [2020-07-17 22:31:34,597 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34 WrapperNode [2020-07-17 22:31:34,597 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-17 22:31:34,598 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-17 22:31:34,598 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-17 22:31:34,598 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-17 22:31:34,612 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,612 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,629 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,630 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,655 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,663 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,667 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (1/1) ... [2020-07-17 22:31:34,674 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-17 22:31:34,674 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-17 22:31:34,675 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-17 22:31:34,675 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-17 22:31:34,677 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (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 22:31:34,755 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-17 22:31:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-17 22:31:34,756 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-17 22:31:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-17 22:31:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-17 22:31:34,756 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-17 22:31:34,757 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-17 22:31:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-17 22:31:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-17 22:31:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-17 22:31:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-17 22:31:34,758 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-17 22:31:34,759 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-17 22:31:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-17 22:31:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-17 22:31:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-17 22:31:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-17 22:31:34,760 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-17 22:31:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-17 22:31:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-17 22:31:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-17 22:31:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-17 22:31:34,761 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-17 22:31:34,762 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-17 22:31:34,763 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-17 22:31:34,764 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-17 22:31:34,765 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-17 22:31:34,766 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-17 22:31:34,767 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-17 22:31:34,768 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-17 22:31:34,769 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-17 22:31:34,770 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-17 22:31:34,771 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-17 22:31:34,772 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-17 22:31:34,773 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-17 22:31:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-17 22:31:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-17 22:31:34,774 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-17 22:31:35,408 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-17 22:31:35,408 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-17 22:31:35,412 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:31:35 BoogieIcfgContainer [2020-07-17 22:31:35,412 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-17 22:31:35,414 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-17 22:31:35,414 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-17 22:31:35,418 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-17 22:31:35,418 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.07 10:31:33" (1/3) ... [2020-07-17 22:31:35,419 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d82d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:31:35, skipping insertion in model container [2020-07-17 22:31:35,419 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.07 10:31:34" (2/3) ... [2020-07-17 22:31:35,420 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2d82d52e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.07 10:31:35, skipping insertion in model container [2020-07-17 22:31:35,420 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.07 10:31:35" (3/3) ... [2020-07-17 22:31:35,422 INFO L109 eAbstractionObserver]: Analyzing ICFG dll-circular-1.i [2020-07-17 22:31:35,433 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-07-17 22:31:35,441 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-17 22:31:35,456 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-17 22:31:35,481 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-17 22:31:35,481 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-17 22:31:35,482 INFO L377 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-07-17 22:31:35,482 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-17 22:31:35,482 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-17 22:31:35,482 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-17 22:31:35,482 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-17 22:31:35,483 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-17 22:31:35,504 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2020-07-17 22:31:35,510 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-07-17 22:31:35,511 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:31:35,512 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:31:35,513 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:31:35,519 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:31:35,520 INFO L82 PathProgramCache]: Analyzing trace with hash -1483997276, now seen corresponding path program 1 times [2020-07-17 22:31:35,531 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:31:35,532 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [718627564] [2020-07-17 22:31:35,532 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:31:35,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:35,768 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:35,784 INFO L280 TraceCheckUtils]: 0: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {41#true} is VALID [2020-07-17 22:31:35,785 INFO L280 TraceCheckUtils]: 1: Hoare triple {41#true} assume true; {41#true} is VALID [2020-07-17 22:31:35,786 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {41#true} {41#true} #129#return; {41#true} is VALID [2020-07-17 22:31:35,806 INFO L263 TraceCheckUtils]: 0: Hoare triple {41#true} call ULTIMATE.init(); {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:31:35,807 INFO L280 TraceCheckUtils]: 1: Hoare triple {46#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {41#true} is VALID [2020-07-17 22:31:35,807 INFO L280 TraceCheckUtils]: 2: Hoare triple {41#true} assume true; {41#true} is VALID [2020-07-17 22:31:35,807 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {41#true} {41#true} #129#return; {41#true} is VALID [2020-07-17 22:31:35,808 INFO L263 TraceCheckUtils]: 4: Hoare triple {41#true} call #t~ret18 := main(); {41#true} is VALID [2020-07-17 22:31:35,808 INFO L280 TraceCheckUtils]: 5: Hoare triple {41#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {41#true} is VALID [2020-07-17 22:31:35,809 INFO L280 TraceCheckUtils]: 6: Hoare triple {41#true} assume !true; {42#false} is VALID [2020-07-17 22:31:35,810 INFO L280 TraceCheckUtils]: 7: Hoare triple {42#false} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {42#false} is VALID [2020-07-17 22:31:35,810 INFO L280 TraceCheckUtils]: 8: Hoare triple {42#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {42#false} is VALID [2020-07-17 22:31:35,811 INFO L280 TraceCheckUtils]: 9: Hoare triple {42#false} assume !false; {42#false} is VALID [2020-07-17 22:31:35,812 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 22:31:35,813 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [718627564] [2020-07-17 22:31:35,814 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:31:35,814 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-17 22:31:35,815 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [217433151] [2020-07-17 22:31:35,821 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-17 22:31:35,824 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:31:35,828 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states. [2020-07-17 22:31:35,854 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 10 edges. 10 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:35,854 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-17 22:31:35,855 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:31:35,864 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-17 22:31:35,865 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:31:35,867 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 3 states. [2020-07-17 22:31:36,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:36,192 INFO L93 Difference]: Finished difference Result 70 states and 106 transitions. [2020-07-17 22:31:36,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-17 22:31:36,192 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-07-17 22:31:36,193 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:31:36,195 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:31:36,233 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-07-17 22:31:36,234 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 3 states. [2020-07-17 22:31:36,241 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3 states to 3 states and 106 transitions. [2020-07-17 22:31:36,241 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 3 states and 106 transitions. [2020-07-17 22:31:36,409 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 106 edges. 106 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:36,435 INFO L225 Difference]: With dead ends: 70 [2020-07-17 22:31:36,436 INFO L226 Difference]: Without dead ends: 30 [2020-07-17 22:31:36,443 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-17 22:31:36,465 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-07-17 22:31:36,495 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-07-17 22:31:36,495 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:31:36,496 INFO L82 GeneralOperation]: Start isEquivalent. First operand 30 states. Second operand 30 states. [2020-07-17 22:31:36,497 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-17 22:31:36,497 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-17 22:31:36,502 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:36,504 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-17 22:31:36,505 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-17 22:31:36,505 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:36,506 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:36,506 INFO L74 IsIncluded]: Start isIncluded. First operand 30 states. Second operand 30 states. [2020-07-17 22:31:36,506 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 30 states. [2020-07-17 22:31:36,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:36,517 INFO L93 Difference]: Finished difference Result 30 states and 35 transitions. [2020-07-17 22:31:36,517 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-17 22:31:36,518 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:36,518 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:36,518 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:31:36,519 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:31:36,519 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-07-17 22:31:36,524 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 35 transitions. [2020-07-17 22:31:36,526 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 35 transitions. Word has length 10 [2020-07-17 22:31:36,527 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:31:36,527 INFO L479 AbstractCegarLoop]: Abstraction has 30 states and 35 transitions. [2020-07-17 22:31:36,527 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-17 22:31:36,527 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 35 transitions. [2020-07-17 22:31:36,528 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-07-17 22:31:36,528 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:31:36,528 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:31:36,529 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-17 22:31:36,529 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:31:36,530 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:31:36,530 INFO L82 PathProgramCache]: Analyzing trace with hash 1199756337, now seen corresponding path program 1 times [2020-07-17 22:31:36,530 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:31:36,530 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1194964206] [2020-07-17 22:31:36,530 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:31:36,609 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:36,740 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:36,746 INFO L280 TraceCheckUtils]: 0: Hoare triple {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {231#true} is VALID [2020-07-17 22:31:36,747 INFO L280 TraceCheckUtils]: 1: Hoare triple {231#true} assume true; {231#true} is VALID [2020-07-17 22:31:36,747 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {231#true} {231#true} #129#return; {231#true} is VALID [2020-07-17 22:31:36,751 INFO L263 TraceCheckUtils]: 0: Hoare triple {231#true} call ULTIMATE.init(); {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:31:36,751 INFO L280 TraceCheckUtils]: 1: Hoare triple {238#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {231#true} is VALID [2020-07-17 22:31:36,751 INFO L280 TraceCheckUtils]: 2: Hoare triple {231#true} assume true; {231#true} is VALID [2020-07-17 22:31:36,752 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {231#true} {231#true} #129#return; {231#true} is VALID [2020-07-17 22:31:36,752 INFO L263 TraceCheckUtils]: 4: Hoare triple {231#true} call #t~ret18 := main(); {231#true} is VALID [2020-07-17 22:31:36,754 INFO L280 TraceCheckUtils]: 5: Hoare triple {231#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-17 22:31:36,756 INFO L280 TraceCheckUtils]: 6: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-17 22:31:36,758 INFO L280 TraceCheckUtils]: 7: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} assume !(0 != #t~nondet1);havoc #t~nondet1; {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} is VALID [2020-07-17 22:31:36,761 INFO L280 TraceCheckUtils]: 8: Hoare triple {236#(and (= main_~x~0.offset main_~head~0.offset) (= main_~head~0.base main_~x~0.base) (not (= 0 (select (select |#memory_$Pointer$.base| main_~x~0.base) main_~head~0.offset))))} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {237#(not (= 0 main_~x~0.base))} is VALID [2020-07-17 22:31:36,763 INFO L280 TraceCheckUtils]: 9: Hoare triple {237#(not (= 0 main_~x~0.base))} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {232#false} is VALID [2020-07-17 22:31:36,763 INFO L280 TraceCheckUtils]: 10: Hoare triple {232#false} assume !false; {232#false} is VALID [2020-07-17 22:31:36,765 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 22:31:36,766 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1194964206] [2020-07-17 22:31:36,766 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:31:36,766 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-17 22:31:36,766 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1998184277] [2020-07-17 22:31:36,768 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 22:31:36,769 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:31:36,769 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states. [2020-07-17 22:31:36,787 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 11 edges. 11 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:36,788 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-17 22:31:36,788 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:31:36,788 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-17 22:31:36,789 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-17 22:31:36,789 INFO L87 Difference]: Start difference. First operand 30 states and 35 transitions. Second operand 5 states. [2020-07-17 22:31:37,094 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,094 INFO L93 Difference]: Finished difference Result 46 states and 53 transitions. [2020-07-17 22:31:37,095 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-07-17 22:31:37,095 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-07-17 22:31:37,095 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:31:37,095 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:31:37,101 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2020-07-17 22:31:37,102 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 5 states. [2020-07-17 22:31:37,103 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5 states to 5 states and 53 transitions. [2020-07-17 22:31:37,104 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 5 states and 53 transitions. [2020-07-17 22:31:37,205 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 53 edges. 53 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:37,207 INFO L225 Difference]: With dead ends: 46 [2020-07-17 22:31:37,208 INFO L226 Difference]: Without dead ends: 42 [2020-07-17 22:31:37,209 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-17 22:31:37,210 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-07-17 22:31:37,246 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 32. [2020-07-17 22:31:37,246 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:31:37,246 INFO L82 GeneralOperation]: Start isEquivalent. First operand 42 states. Second operand 32 states. [2020-07-17 22:31:37,247 INFO L74 IsIncluded]: Start isIncluded. First operand 42 states. Second operand 32 states. [2020-07-17 22:31:37,247 INFO L87 Difference]: Start difference. First operand 42 states. Second operand 32 states. [2020-07-17 22:31:37,250 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,251 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-17 22:31:37,251 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-17 22:31:37,252 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:37,252 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:37,252 INFO L74 IsIncluded]: Start isIncluded. First operand 32 states. Second operand 42 states. [2020-07-17 22:31:37,252 INFO L87 Difference]: Start difference. First operand 32 states. Second operand 42 states. [2020-07-17 22:31:37,255 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,256 INFO L93 Difference]: Finished difference Result 42 states and 49 transitions. [2020-07-17 22:31:37,256 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 49 transitions. [2020-07-17 22:31:37,257 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:37,257 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:37,257 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:31:37,257 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:31:37,258 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2020-07-17 22:31:37,260 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 38 transitions. [2020-07-17 22:31:37,260 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 38 transitions. Word has length 11 [2020-07-17 22:31:37,261 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:31:37,261 INFO L479 AbstractCegarLoop]: Abstraction has 32 states and 38 transitions. [2020-07-17 22:31:37,261 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-17 22:31:37,261 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 38 transitions. [2020-07-17 22:31:37,262 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-07-17 22:31:37,262 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:31:37,262 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:31:37,262 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-17 22:31:37,263 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:31:37,263 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:31:37,263 INFO L82 PathProgramCache]: Analyzing trace with hash -97127833, now seen corresponding path program 1 times [2020-07-17 22:31:37,263 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:31:37,264 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [880992563] [2020-07-17 22:31:37,264 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:31:37,284 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:37,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-17 22:31:37,355 INFO L280 TraceCheckUtils]: 0: Hoare triple {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {426#true} is VALID [2020-07-17 22:31:37,356 INFO L280 TraceCheckUtils]: 1: Hoare triple {426#true} assume true; {426#true} is VALID [2020-07-17 22:31:37,356 INFO L275 TraceCheckUtils]: 2: Hoare quadruple {426#true} {426#true} #129#return; {426#true} is VALID [2020-07-17 22:31:37,358 INFO L263 TraceCheckUtils]: 0: Hoare triple {426#true} call ULTIMATE.init(); {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} is VALID [2020-07-17 22:31:37,358 INFO L280 TraceCheckUtils]: 1: Hoare triple {432#(and (= |#valid| |old(#valid)|) (= |#NULL.base| |old(#NULL.base)|) (= |#NULL.offset| |old(#NULL.offset)|))} #NULL.base, #NULL.offset := 0, 0;#valid := #valid[0 := 0];assume 0 < #StackHeapBarrier; {426#true} is VALID [2020-07-17 22:31:37,359 INFO L280 TraceCheckUtils]: 2: Hoare triple {426#true} assume true; {426#true} is VALID [2020-07-17 22:31:37,359 INFO L275 TraceCheckUtils]: 3: Hoare quadruple {426#true} {426#true} #129#return; {426#true} is VALID [2020-07-17 22:31:37,359 INFO L263 TraceCheckUtils]: 4: Hoare triple {426#true} call #t~ret18 := main(); {426#true} is VALID [2020-07-17 22:31:37,362 INFO L280 TraceCheckUtils]: 5: Hoare triple {426#true} call #t~malloc0.base, #t~malloc0.offset := #Ultimate.allocOnHeap(12);~head~0.base, ~head~0.offset := #t~malloc0.base, #t~malloc0.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~head~0.base, ~head~0.offset, 4);call write~int(0, ~head~0.base, 8 + ~head~0.offset, 4);~x~0.base, ~x~0.offset := ~head~0.base, ~head~0.offset;~state~0 := 1; {431#(= 1 main_~state~0)} is VALID [2020-07-17 22:31:37,363 INFO L280 TraceCheckUtils]: 6: Hoare triple {431#(= 1 main_~state~0)} assume -2147483648 <= #t~nondet1 && #t~nondet1 <= 2147483647; {431#(= 1 main_~state~0)} is VALID [2020-07-17 22:31:37,364 INFO L280 TraceCheckUtils]: 7: Hoare triple {431#(= 1 main_~state~0)} assume !!(0 != #t~nondet1);havoc #t~nondet1;call #t~malloc2.base, #t~malloc2.offset := #Ultimate.allocOnHeap(12);call write~$Pointer$(#t~malloc2.base, #t~malloc2.offset, ~x~0.base, ~x~0.offset, 4);call #t~mem3.base, #t~mem3.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);call write~$Pointer$(~x~0.base, ~x~0.offset, #t~mem3.base, 4 + #t~mem3.offset, 4);havoc #t~mem3.base, #t~mem3.offset;call #t~mem4.base, #t~mem4.offset := read~$Pointer$(~x~0.base, ~x~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem4.base, #t~mem4.offset;havoc #t~mem4.base, #t~mem4.offset;call write~$Pointer$(~head~0.base, ~head~0.offset, ~x~0.base, ~x~0.offset, 4);assume -2147483648 <= #t~nondet5 && #t~nondet5 <= 2147483647; {431#(= 1 main_~state~0)} is VALID [2020-07-17 22:31:37,365 INFO L280 TraceCheckUtils]: 8: Hoare triple {431#(= 1 main_~state~0)} assume 0 != #t~nondet5;havoc #t~nondet5; {431#(= 1 main_~state~0)} is VALID [2020-07-17 22:31:37,366 INFO L280 TraceCheckUtils]: 9: Hoare triple {431#(= 1 main_~state~0)} assume !(1 == ~state~0); {427#false} is VALID [2020-07-17 22:31:37,366 INFO L280 TraceCheckUtils]: 10: Hoare triple {427#false} assume !(2 == ~state~0); {427#false} is VALID [2020-07-17 22:31:37,366 INFO L280 TraceCheckUtils]: 11: Hoare triple {427#false} call write~int(~state~0, ~x~0.base, 8 + ~x~0.offset, 4);call #t~mem6.base, #t~mem6.offset := read~$Pointer$(~head~0.base, ~head~0.offset, 4);~x~0.base, ~x~0.offset := #t~mem6.base, #t~mem6.offset;havoc #t~mem6.base, #t~mem6.offset; {427#false} is VALID [2020-07-17 22:31:37,366 INFO L280 TraceCheckUtils]: 12: Hoare triple {427#false} assume !(0 != ~x~0.base || 0 != ~x~0.offset); {427#false} is VALID [2020-07-17 22:31:37,367 INFO L280 TraceCheckUtils]: 13: Hoare triple {427#false} assume !false; {427#false} is VALID [2020-07-17 22:31:37,368 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 22:31:37,368 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [880992563] [2020-07-17 22:31:37,370 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-17 22:31:37,371 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-07-17 22:31:37,371 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1336264633] [2020-07-17 22:31:37,371 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-17 22:31:37,372 INFO L84 Accepts]: Finished accepts. word is accepted. [2020-07-17 22:31:37,372 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states. [2020-07-17 22:31:37,392 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 14 edges. 14 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:37,392 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-07-17 22:31:37,393 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-07-17 22:31:37,393 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-07-17 22:31:37,393 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:31:37,394 INFO L87 Difference]: Start difference. First operand 32 states and 38 transitions. Second operand 4 states. [2020-07-17 22:31:37,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,608 INFO L93 Difference]: Finished difference Result 75 states and 90 transitions. [2020-07-17 22:31:37,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-07-17 22:31:37,608 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 14 [2020-07-17 22:31:37,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-17 22:31:37,608 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:31:37,611 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2020-07-17 22:31:37,611 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 4 states. [2020-07-17 22:31:37,613 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 4 states to 4 states and 85 transitions. [2020-07-17 22:31:37,614 INFO L86 InductivityCheck]: Starting indutivity check of a Floyd-Hoare automaton with 4 states and 85 transitions. [2020-07-17 22:31:37,715 INFO L119 InductivityCheck]: Floyd-Hoare automaton has 85 edges. 85 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. [2020-07-17 22:31:37,717 INFO L225 Difference]: With dead ends: 75 [2020-07-17 22:31:37,717 INFO L226 Difference]: Without dead ends: 53 [2020-07-17 22:31:37,718 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-07-17 22:31:37,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-07-17 22:31:37,738 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 39. [2020-07-17 22:31:37,738 INFO L214 AbstractMinimizeNwa]: Start testing correctness of minimizeSevpa [2020-07-17 22:31:37,738 INFO L82 GeneralOperation]: Start isEquivalent. First operand 53 states. Second operand 39 states. [2020-07-17 22:31:37,738 INFO L74 IsIncluded]: Start isIncluded. First operand 53 states. Second operand 39 states. [2020-07-17 22:31:37,738 INFO L87 Difference]: Start difference. First operand 53 states. Second operand 39 states. [2020-07-17 22:31:37,742 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,742 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-17 22:31:37,742 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-17 22:31:37,743 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:37,743 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:37,743 INFO L74 IsIncluded]: Start isIncluded. First operand 39 states. Second operand 53 states. [2020-07-17 22:31:37,743 INFO L87 Difference]: Start difference. First operand 39 states. Second operand 53 states. [2020-07-17 22:31:37,746 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-17 22:31:37,747 INFO L93 Difference]: Finished difference Result 53 states and 62 transitions. [2020-07-17 22:31:37,747 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 62 transitions. [2020-07-17 22:31:37,747 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2020-07-17 22:31:37,748 INFO L83 IsIncluded]: Finished isIncluded. Language is included [2020-07-17 22:31:37,748 INFO L88 GeneralOperation]: Finished isEquivalent. [2020-07-17 22:31:37,748 INFO L221 AbstractMinimizeNwa]: Finished testing correctness of minimizeSevpa [2020-07-17 22:31:37,748 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2020-07-17 22:31:37,750 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 47 transitions. [2020-07-17 22:31:37,750 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 47 transitions. Word has length 14 [2020-07-17 22:31:37,751 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-17 22:31:37,751 INFO L479 AbstractCegarLoop]: Abstraction has 39 states and 47 transitions. [2020-07-17 22:31:37,751 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-07-17 22:31:37,751 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 47 transitions. [2020-07-17 22:31:37,752 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-17 22:31:37,752 INFO L414 BasicCegarLoop]: Found error trace [2020-07-17 22:31:37,752 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-17 22:31:37,752 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-17 22:31:37,753 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-17 22:31:37,753 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-17 22:31:37,753 INFO L82 PathProgramCache]: Analyzing trace with hash 2075944349, now seen corresponding path program 1 times [2020-07-17 22:31:37,753 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-07-17 22:31:37,754 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1211705219] [2020-07-17 22:31:37,754 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-17 22:31:37,782 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:31:37,806 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-17 22:31:37,839 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-07-17 22:31:37,839 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-17 22:31:37,839 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-17 22:31:37,869 WARN L170 areAnnotationChecker]: ULTIMATE.initENTRY has no Hoare annotation [2020-07-17 22:31:37,869 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:31:37,869 WARN L170 areAnnotationChecker]: ULTIMATE.startENTRY has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: mainENTRY has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: ULTIMATE.initFINAL has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: L-1 has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: L1014-5 has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: L1014-5 has no Hoare annotation [2020-07-17 22:31:37,870 WARN L170 areAnnotationChecker]: ULTIMATE.initEXIT has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: ULTIMATE.startFINAL has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L994-3 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L994-1 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L1019-4 has no Hoare annotation [2020-07-17 22:31:37,871 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1002 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1021-2 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1021-2 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1019-1 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-17 22:31:37,872 WARN L170 areAnnotationChecker]: L1019-3 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1004 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1002-1 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1021-3 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1021 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-17 22:31:37,873 WARN L170 areAnnotationChecker]: L1006 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1014-4 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1029-3 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1029-3 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1023-7 has no Hoare annotation [2020-07-17 22:31:37,874 WARN L170 areAnnotationChecker]: L1023-7 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1014-1 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1014-1 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1014-3 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1029-4 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1029-1 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1023-1 has no Hoare annotation [2020-07-17 22:31:37,875 WARN L170 areAnnotationChecker]: L1023-1 has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: L1023-8 has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: mainFINAL has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: L1023-3 has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: mainEXIT has no Hoare annotation [2020-07-17 22:31:37,876 WARN L170 areAnnotationChecker]: L1023-4 has no Hoare annotation [2020-07-17 22:31:37,877 WARN L170 areAnnotationChecker]: L1023-4 has no Hoare annotation [2020-07-17 22:31:37,877 WARN L170 areAnnotationChecker]: L1023-6 has no Hoare annotation [2020-07-17 22:31:37,877 WARN L170 areAnnotationChecker]: L1023-6 has no Hoare annotation [2020-07-17 22:31:37,877 INFO L163 areAnnotationChecker]: CFG has 0 edges. 0 inductive. 0 not inductive. 0 times theorem prover too weak to decide inductivity. 0 times interpolants missing. [2020-07-17 22:31:37,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 17.07 10:31:37 BoogieIcfgContainer [2020-07-17 22:31:37,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-17 22:31:37,883 INFO L168 Benchmark]: Toolchain (without parser) took 3993.54 ms. Allocated memory was 138.9 MB in the beginning and 248.0 MB in the end (delta: 109.1 MB). Free memory was 102.8 MB in the beginning and 136.2 MB in the end (delta: -33.4 MB). Peak memory consumption was 75.7 MB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,884 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,885 INFO L168 Benchmark]: CACSL2BoogieTranslator took 705.54 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 166.6 MB in the end (delta: -64.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,886 INFO L168 Benchmark]: Boogie Preprocessor took 76.30 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 163.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,887 INFO L168 Benchmark]: RCFGBuilder took 738.16 ms. Allocated memory is still 200.3 MB. Free memory was 162.5 MB in the beginning and 106.1 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,888 INFO L168 Benchmark]: TraceAbstraction took 2466.13 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 105.5 MB in the beginning and 136.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. [2020-07-17 22:31:37,891 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - AssertionsEnabledResult: Assertions are enabled Assertions are enabled - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 138.9 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 705.54 ms. Allocated memory was 138.9 MB in the beginning and 200.3 MB in the end (delta: 61.3 MB). Free memory was 102.4 MB in the beginning and 166.6 MB in the end (delta: -64.2 MB). Peak memory consumption was 26.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.30 ms. Allocated memory is still 200.3 MB. Free memory was 166.6 MB in the beginning and 163.2 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 738.16 ms. Allocated memory is still 200.3 MB. Free memory was 162.5 MB in the beginning and 106.1 MB in the end (delta: 56.3 MB). Peak memory consumption was 56.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2466.13 ms. Allocated memory was 200.3 MB in the beginning and 248.0 MB in the end (delta: 47.7 MB). Free memory was 105.5 MB in the beginning and 136.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 17.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1023]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L986] SLL* head = malloc(sizeof(SLL)); [L987] head->next = head [L988] head->data = 0 [L990] SLL* x = head; [L991] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L994] COND FALSE !(__VERIFIER_nondet_int()) [L1016] x->data = state [L1018] EXPR head->next [L1018] x = head->next [L1019] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1021] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1021] COND TRUE x->data != 0 [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data [L1023] EXPR x->data [L1023] EXPR x->next [L1023] EXPR x->next->data [L1023] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1023] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1023] __VERIFIER_error() VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 38 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 1.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 92 SDtfs, 44 SDslu, 66 SDs, 0 SdLazy, 140 SolverSat, 7 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=39occurred in iteration=3, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 3 MinimizatonAttempts, 24 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 52 NumberOfCodeBlocks, 52 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 32 ConstructedInterpolants, 0 QuantifiedInterpolants, 1192 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 PerfectInterpolantSequences, 0/0 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...