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/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-08 01:32:04,664 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-08 01:32:04,666 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-08 01:32:04,677 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-08 01:32:04,678 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-08 01:32:04,679 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-08 01:32:04,680 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-08 01:32:04,682 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-08 01:32:04,683 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-08 01:32:04,684 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-08 01:32:04,685 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-08 01:32:04,686 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-08 01:32:04,687 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-08 01:32:04,688 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-08 01:32:04,688 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-08 01:32:04,690 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-08 01:32:04,690 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-08 01:32:04,691 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-08 01:32:04,693 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-08 01:32:04,695 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-08 01:32:04,697 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-08 01:32:04,698 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-08 01:32:04,699 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-08 01:32:04,700 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-08 01:32:04,702 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-08 01:32:04,702 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-08 01:32:04,702 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-08 01:32:04,703 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-08 01:32:04,704 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-08 01:32:04,705 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-08 01:32:04,705 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-08 01:32:04,706 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-08 01:32:04,706 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-08 01:32:04,707 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-08 01:32:04,708 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-08 01:32:04,708 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-08 01:32:04,709 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-08 01:32:04,709 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-08 01:32:04,710 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-08 01:32:04,710 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-08 01:32:04,711 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-08 01:32:04,712 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 [2019-09-08 01:32:04,726 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-08 01:32:04,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-08 01:32:04,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-08 01:32:04,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-08 01:32:04,728 INFO L138 SettingsManager]: * Use SBE=true [2019-09-08 01:32:04,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-08 01:32:04,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-08 01:32:04,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-08 01:32:04,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-08 01:32:04,729 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-08 01:32:04,729 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-08 01:32:04,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-08 01:32:04,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-08 01:32:04,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-08 01:32:04,730 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-08 01:32:04,730 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-08 01:32:04,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-08 01:32:04,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-08 01:32:04,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-08 01:32:04,731 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-08 01:32:04,731 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-08 01:32:04,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-08 01:32:04,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-08 01:32:04,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-08 01:32:04,732 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-08 01:32:04,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-08 01:32:04,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-08 01:32:04,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-08 01:32:04,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2019-09-08 01:32:04,761 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-08 01:32:04,776 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-08 01:32:04,779 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-08 01:32:04,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-08 01:32:04,781 INFO L275 PluginConnector]: CDTParser initialized [2019-09-08 01:32:04,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2019-09-08 01:32:04,843 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ccac2c8/f447a94629a44d98b135067359af93aa/FLAG39c51999f [2019-09-08 01:32:05,330 INFO L306 CDTParser]: Found 1 translation units. [2019-09-08 01:32:05,331 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2019-09-08 01:32:05,347 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ccac2c8/f447a94629a44d98b135067359af93aa/FLAG39c51999f [2019-09-08 01:32:05,628 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/29ccac2c8/f447a94629a44d98b135067359af93aa [2019-09-08 01:32:05,638 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-08 01:32:05,640 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-08 01:32:05,641 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-08 01:32:05,641 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-08 01:32:05,645 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-08 01:32:05,646 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:32:05" (1/1) ... [2019-09-08 01:32:05,649 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@10dcc338 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:05, skipping insertion in model container [2019-09-08 01:32:05,649 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 08.09 01:32:05" (1/1) ... [2019-09-08 01:32:05,657 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-08 01:32:05,715 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-08 01:32:06,198 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:32:06,208 INFO L188 MainTranslator]: Completed pre-run [2019-09-08 01:32:06,259 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-08 01:32:06,312 INFO L192 MainTranslator]: Completed translation [2019-09-08 01:32:06,312 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06 WrapperNode [2019-09-08 01:32:06,312 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-08 01:32:06,313 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-08 01:32:06,313 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-08 01:32:06,314 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-08 01:32:06,327 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,327 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,343 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,344 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,361 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,368 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,375 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (1/1) ... [2019-09-08 01:32:06,386 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-08 01:32:06,391 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-08 01:32:06,391 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-08 01:32:06,392 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-08 01:32:06,394 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (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 [2019-09-08 01:32:06,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-08 01:32:06,442 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-08 01:32:06,442 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-08 01:32:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-08 01:32:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-09-08 01:32:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-09-08 01:32:06,443 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-09-08 01:32:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-08 01:32:06,444 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-08 01:32:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-08 01:32:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-08 01:32:06,444 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-08 01:32:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-08 01:32:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-08 01:32:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-08 01:32:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-08 01:32:06,445 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-08 01:32:06,446 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-08 01:32:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-08 01:32:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-08 01:32:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-08 01:32:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-08 01:32:06,447 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-08 01:32:06,448 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-08 01:32:06,449 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-08 01:32:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-08 01:32:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-08 01:32:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-08 01:32:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-08 01:32:06,450 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-08 01:32:06,451 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-08 01:32:06,452 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-08 01:32:06,453 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-08 01:32:06,454 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-08 01:32:06,455 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-08 01:32:06,456 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-08 01:32:06,457 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-08 01:32:06,458 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-08 01:32:06,459 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-08 01:32:06,460 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-08 01:32:06,461 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-08 01:32:06,462 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-08 01:32:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-08 01:32:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-08 01:32:06,463 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-08 01:32:06,818 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-08 01:32:07,009 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-08 01:32:07,010 INFO L283 CfgBuilder]: Removed 4 assume(true) statements. [2019-09-08 01:32:07,011 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:32:07 BoogieIcfgContainer [2019-09-08 01:32:07,011 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-08 01:32:07,012 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-08 01:32:07,012 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-08 01:32:07,016 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-08 01:32:07,016 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 08.09 01:32:05" (1/3) ... [2019-09-08 01:32:07,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf548fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:32:07, skipping insertion in model container [2019-09-08 01:32:07,017 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 08.09 01:32:06" (2/3) ... [2019-09-08 01:32:07,017 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6cf548fd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 08.09 01:32:07, skipping insertion in model container [2019-09-08 01:32:07,018 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 08.09 01:32:07" (3/3) ... [2019-09-08 01:32:07,019 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-09-08 01:32:07,029 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-08 01:32:07,037 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-08 01:32:07,054 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-08 01:32:07,084 INFO L128 ementStrategyFactory]: Using default assertion order modulation [2019-09-08 01:32:07,085 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-08 01:32:07,085 INFO L378 AbstractCegarLoop]: Hoare is true [2019-09-08 01:32:07,086 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-08 01:32:07,086 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-08 01:32:07,086 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-08 01:32:07,086 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-08 01:32:07,086 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-08 01:32:07,086 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-08 01:32:07,105 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-08 01:32:07,111 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-09-08 01:32:07,111 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:32:07,112 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:32:07,114 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:32:07,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:32:07,120 INFO L82 PathProgramCache]: Analyzing trace with hash 661731879, now seen corresponding path program 1 times [2019-09-08 01:32:07,122 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:32:07,123 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:32:07,170 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,171 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:32:07,171 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,210 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:32:07,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:32:07,258 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:32:07,259 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-08 01:32:07,262 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-08 01:32:07,276 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-08 01:32:07,277 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:32:07,279 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-08 01:32:07,306 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:32:07,307 INFO L93 Difference]: Finished difference Result 54 states and 77 transitions. [2019-09-08 01:32:07,307 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-08 01:32:07,309 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 16 [2019-09-08 01:32:07,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:32:07,318 INFO L225 Difference]: With dead ends: 54 [2019-09-08 01:32:07,318 INFO L226 Difference]: Without dead ends: 27 [2019-09-08 01:32:07,322 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 2 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-08 01:32:07,343 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2019-09-08 01:32:07,364 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2019-09-08 01:32:07,365 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2019-09-08 01:32:07,367 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 33 transitions. [2019-09-08 01:32:07,368 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 33 transitions. Word has length 16 [2019-09-08 01:32:07,369 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:32:07,369 INFO L475 AbstractCegarLoop]: Abstraction has 27 states and 33 transitions. [2019-09-08 01:32:07,369 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-08 01:32:07,369 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 33 transitions. [2019-09-08 01:32:07,370 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2019-09-08 01:32:07,371 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:32:07,371 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:32:07,371 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:32:07,372 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:32:07,372 INFO L82 PathProgramCache]: Analyzing trace with hash 1973627133, now seen corresponding path program 1 times [2019-09-08 01:32:07,372 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:32:07,373 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:32:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,375 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:32:07,375 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,399 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:32:07,540 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:32:07,543 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:32:07,544 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:32:07,548 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:32:07,549 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:32:07,549 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:32:07,549 INFO L87 Difference]: Start difference. First operand 27 states and 33 transitions. Second operand 4 states. [2019-09-08 01:32:07,644 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:32:07,644 INFO L93 Difference]: Finished difference Result 44 states and 55 transitions. [2019-09-08 01:32:07,645 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:32:07,645 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 18 [2019-09-08 01:32:07,646 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:32:07,648 INFO L225 Difference]: With dead ends: 44 [2019-09-08 01:32:07,648 INFO L226 Difference]: Without dead ends: 37 [2019-09-08 01:32:07,650 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:32:07,650 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2019-09-08 01:32:07,660 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 32. [2019-09-08 01:32:07,660 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 32 states. [2019-09-08 01:32:07,662 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 32 states to 32 states and 40 transitions. [2019-09-08 01:32:07,662 INFO L78 Accepts]: Start accepts. Automaton has 32 states and 40 transitions. Word has length 18 [2019-09-08 01:32:07,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:32:07,663 INFO L475 AbstractCegarLoop]: Abstraction has 32 states and 40 transitions. [2019-09-08 01:32:07,663 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:32:07,663 INFO L276 IsEmpty]: Start isEmpty. Operand 32 states and 40 transitions. [2019-09-08 01:32:07,665 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-09-08 01:32:07,666 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:32:07,666 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:32:07,666 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:32:07,666 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:32:07,667 INFO L82 PathProgramCache]: Analyzing trace with hash -1721544590, now seen corresponding path program 1 times [2019-09-08 01:32:07,667 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:32:07,667 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:32:07,669 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,670 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:32:07,670 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:32:07,766 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:32:07,766 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:32:07,766 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-08 01:32:07,767 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-08 01:32:07,767 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-08 01:32:07,768 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-08 01:32:07,768 INFO L87 Difference]: Start difference. First operand 32 states and 40 transitions. Second operand 4 states. [2019-09-08 01:32:07,864 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:32:07,864 INFO L93 Difference]: Finished difference Result 51 states and 64 transitions. [2019-09-08 01:32:07,864 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-08 01:32:07,864 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-09-08 01:32:07,865 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:32:07,867 INFO L225 Difference]: With dead ends: 51 [2019-09-08 01:32:07,868 INFO L226 Difference]: Without dead ends: 43 [2019-09-08 01:32:07,868 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-09-08 01:32:07,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 43 states. [2019-09-08 01:32:07,875 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 43 to 41. [2019-09-08 01:32:07,875 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 41 states. [2019-09-08 01:32:07,876 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 41 states to 41 states and 53 transitions. [2019-09-08 01:32:07,876 INFO L78 Accepts]: Start accepts. Automaton has 41 states and 53 transitions. Word has length 20 [2019-09-08 01:32:07,877 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:32:07,877 INFO L475 AbstractCegarLoop]: Abstraction has 41 states and 53 transitions. [2019-09-08 01:32:07,877 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-08 01:32:07,877 INFO L276 IsEmpty]: Start isEmpty. Operand 41 states and 53 transitions. [2019-09-08 01:32:07,878 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-09-08 01:32:07,878 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:32:07,878 INFO L399 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-08 01:32:07,879 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:32:07,879 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:32:07,879 INFO L82 PathProgramCache]: Analyzing trace with hash -918584693, now seen corresponding path program 1 times [2019-09-08 01:32:07,879 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:32:07,879 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:32:07,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,881 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:32:07,881 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:07,894 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-08 01:32:07,947 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-08 01:32:07,947 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-08 01:32:07,948 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-09-08 01:32:07,948 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-09-08 01:32:07,948 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-09-08 01:32:07,949 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-09-08 01:32:07,949 INFO L87 Difference]: Start difference. First operand 41 states and 53 transitions. Second operand 6 states. [2019-09-08 01:32:08,107 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-08 01:32:08,107 INFO L93 Difference]: Finished difference Result 74 states and 98 transitions. [2019-09-08 01:32:08,108 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-09-08 01:32:08,108 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-09-08 01:32:08,108 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-08 01:32:08,109 INFO L225 Difference]: With dead ends: 74 [2019-09-08 01:32:08,109 INFO L226 Difference]: Without dead ends: 47 [2019-09-08 01:32:08,110 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=35, Unknown=0, NotChecked=0, Total=56 [2019-09-08 01:32:08,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-09-08 01:32:08,115 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 43. [2019-09-08 01:32:08,116 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-09-08 01:32:08,117 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 55 transitions. [2019-09-08 01:32:08,117 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 55 transitions. Word has length 21 [2019-09-08 01:32:08,117 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-08 01:32:08,117 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 55 transitions. [2019-09-08 01:32:08,118 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-09-08 01:32:08,118 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 55 transitions. [2019-09-08 01:32:08,119 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-09-08 01:32:08,119 INFO L391 BasicCegarLoop]: Found error trace [2019-09-08 01:32:08,119 INFO L399 BasicCegarLoop]: trace histogram [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] [2019-09-08 01:32:08,119 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-08 01:32:08,120 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-08 01:32:08,120 INFO L82 PathProgramCache]: Analyzing trace with hash -743556192, now seen corresponding path program 1 times [2019-09-08 01:32:08,120 INFO L223 ckRefinementStrategy]: Switched to mode SMTINTERPOL_TREE_INTERPOLANTS [2019-09-08 01:32:08,120 INFO L69 tionRefinementEngine]: Using refinement strategy CamelRefinementStrategy [2019-09-08 01:32:08,121 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:08,122 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-08 01:32:08,122 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-08 01:32:08,157 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:32:08,191 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-09-08 01:32:08,221 INFO L466 BasicCegarLoop]: Counterexample might be feasible [2019-09-08 01:32:08,285 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 08.09 01:32:08 BoogieIcfgContainer [2019-09-08 01:32:08,285 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-08 01:32:08,288 INFO L168 Benchmark]: Toolchain (without parser) took 2647.48 ms. Allocated memory was 131.6 MB in the beginning and 221.2 MB in the end (delta: 89.7 MB). Free memory was 86.5 MB in the beginning and 151.5 MB in the end (delta: -65.1 MB). Peak memory consumption was 24.6 MB. Max. memory is 7.1 GB. [2019-09-08 01:32:08,290 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 131.6 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-08 01:32:08,291 INFO L168 Benchmark]: CACSL2BoogieTranslator took 671.51 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.3 MB in the beginning and 163.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. [2019-09-08 01:32:08,293 INFO L168 Benchmark]: Boogie Preprocessor took 73.06 ms. Allocated memory is still 199.8 MB. Free memory was 163.6 MB in the beginning and 160.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:32:08,294 INFO L168 Benchmark]: RCFGBuilder took 620.28 ms. Allocated memory is still 199.8 MB. Free memory was 160.4 MB in the beginning and 115.2 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2019-09-08 01:32:08,295 INFO L168 Benchmark]: TraceAbstraction took 1273.17 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 115.2 MB in the beginning and 151.5 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-08 01:32:08,304 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 131.6 MB. Free memory was 106.0 MB in the beginning and 105.8 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 671.51 ms. Allocated memory was 131.6 MB in the beginning and 199.8 MB in the end (delta: 68.2 MB). Free memory was 86.3 MB in the beginning and 163.6 MB in the end (delta: -77.3 MB). Peak memory consumption was 27.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 73.06 ms. Allocated memory is still 199.8 MB. Free memory was 163.6 MB in the beginning and 160.4 MB in the end (delta: 3.2 MB). Peak memory consumption was 3.2 MB. Max. memory is 7.1 GB. * RCFGBuilder took 620.28 ms. Allocated memory is still 199.8 MB. Free memory was 160.4 MB in the beginning and 115.2 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1273.17 ms. Allocated memory was 199.8 MB in the beginning and 221.2 MB in the end (delta: 21.5 MB). Free memory was 115.2 MB in the beginning and 151.5 MB in the end (delta: -36.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L523] COND FALSE !(a == 0) VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}] [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; VAL [a={1:0}, flag=1, malloc(sizeof(struct node))={1:0}, p={1:0}] [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, p={1:0}] [L538] t = (List) malloc(sizeof(struct node)) VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={-1:0}] [L539] COND FALSE !(t == 0) VAL [a={1:0}, flag=0, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={-1:0}] [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h VAL [a={1:0}, a->h=1, flag=0, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={-1:0}] [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a VAL [a={1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={-1:0}] [L549] EXPR p->h VAL [a={1:0}, flag=1, l1={0:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, p->h=1, t={-1:0}] [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 VAL [a={1:0}, flag=0, l1={1:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, t={1:0}] [L549] EXPR p->h VAL [a={1:0}, flag=0, l1={1:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, t={1:0}] [L549] COND FALSE !(p->h != 3) [L562] p = l1 VAL [a={1:0}, flag=0, l1={1:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={1:0}] [L563] COND TRUE p != 0 [L564] EXPR p->h VAL [a={1:0}, flag=0, l1={1:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, p->h=1, t={1:0}] [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() VAL [a={1:0}, flag=0, l1={1:0}, l2={0:0}, malloc(sizeof(struct node))={1:0}, malloc(sizeof(struct node))={-1:0}, p={1:0}, t={1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 52 locations, 1 error locations. UNSAFE Result, 1.2s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.4s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 132 SDtfs, 26 SDslu, 168 SDs, 0 SdLazy, 101 SolverSat, 9 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=43occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s AbstIntTime, 0 AbstIntIterations, 0 AbstIntStrong, NaN AbsIntWeakeningRatio, NaN AbsIntAvgWeakeningVarsNumRemoved, NaN AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 11 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 102 NumberOfCodeBlocks, 102 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 71 ConstructedInterpolants, 0 QuantifiedInterpolants, 3007 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 2/2 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...