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/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf -i ../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-10 01:47:58,762 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-10 01:47:58,764 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-10 01:47:58,776 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-10 01:47:58,776 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-10 01:47:58,778 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-10 01:47:58,779 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-10 01:47:58,781 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-10 01:47:58,783 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-10 01:47:58,783 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-10 01:47:58,784 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-10 01:47:58,786 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-10 01:47:58,786 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-10 01:47:58,787 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-10 01:47:58,788 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-10 01:47:58,789 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-10 01:47:58,790 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-10 01:47:58,791 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-10 01:47:58,793 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-10 01:47:58,794 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-10 01:47:58,796 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-10 01:47:58,797 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-10 01:47:58,798 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-10 01:47:58,799 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-10 01:47:58,801 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-10 01:47:58,802 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-10 01:47:58,802 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-10 01:47:58,803 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-10 01:47:58,803 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-10 01:47:58,804 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-10 01:47:58,805 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-10 01:47:58,805 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-10 01:47:58,806 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-10 01:47:58,807 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-10 01:47:58,808 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-10 01:47:58,808 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-10 01:47:58,809 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-10 01:47:58,809 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-10 01:47:58,809 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-10 01:47:58,810 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-10 01:47:58,811 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-10 01:47:58,812 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/ai/svcomp-Reach-32bit-Automizer_Default+AIv2_INT.epf [2019-09-10 01:47:58,827 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-10 01:47:58,827 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-10 01:47:58,828 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-09-10 01:47:58,828 INFO L138 SettingsManager]: * Log level for plugins=info [2019-09-10 01:47:58,828 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-09-10 01:47:58,829 INFO L138 SettingsManager]: * User list type=DISABLED [2019-09-10 01:47:58,829 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-09-10 01:47:58,829 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-09-10 01:47:58,829 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-09-10 01:47:58,829 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-09-10 01:47:58,830 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-10 01:47:58,830 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-10 01:47:58,831 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-10 01:47:58,832 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-10 01:47:58,832 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-10 01:47:58,832 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-10 01:47:58,832 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-09-10 01:47:58,833 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-10 01:47:58,833 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-10 01:47:58,833 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-10 01:47:58,833 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-10 01:47:58,833 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-09-10 01:47:58,834 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-10 01:47:58,834 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-10 01:47:58,834 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-09-10 01:47:58,868 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-10 01:47:58,879 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-10 01:47:58,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-10 01:47:58,884 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-10 01:47:58,884 INFO L275 PluginConnector]: CDTParser initialized [2019-09-10 01:47:58,885 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-09-10 01:47:58,948 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d8e6c21/efaa3c996861418d94a988d2e2e92d74/FLAG48a52257e [2019-09-10 01:47:59,452 INFO L306 CDTParser]: Found 1 translation units. [2019-09-10 01:47:59,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/dll2n_remove_all.i [2019-09-10 01:47:59,487 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d8e6c21/efaa3c996861418d94a988d2e2e92d74/FLAG48a52257e [2019-09-10 01:47:59,763 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70d8e6c21/efaa3c996861418d94a988d2e2e92d74 [2019-09-10 01:47:59,772 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-10 01:47:59,773 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-10 01:47:59,775 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-10 01:47:59,775 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-10 01:47:59,778 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-10 01:47:59,779 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:59" (1/1) ... [2019-09-10 01:47:59,782 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7bcc6f84 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:47:59, skipping insertion in model container [2019-09-10 01:47:59,783 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 10.09 01:47:59" (1/1) ... [2019-09-10 01:47:59,790 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-10 01:47:59,851 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-10 01:48:00,317 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:00,328 INFO L188 MainTranslator]: Completed pre-run [2019-09-10 01:48:00,388 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-10 01:48:00,447 INFO L192 MainTranslator]: Completed translation [2019-09-10 01:48:00,447 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00 WrapperNode [2019-09-10 01:48:00,447 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-10 01:48:00,448 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-10 01:48:00,448 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-10 01:48:00,448 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-10 01:48:00,462 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,463 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,479 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,480 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,495 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,501 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,504 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (1/1) ... [2019-09-10 01:48:00,515 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-10 01:48:00,516 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-10 01:48:00,516 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-10 01:48:00,516 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-10 01:48:00,523 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (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 [2019-09-10 01:48:00,574 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-10 01:48:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-10 01:48:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-09-10 01:48:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-09-10 01:48:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-09-10 01:48:00,575 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2019-09-10 01:48:00,576 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-09-10 01:48:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_remove_first [2019-09-10 01:48:00,578 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-10 01:48:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-10 01:48:00,578 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-09-10 01:48:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-09-10 01:48:00,579 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-10 01:48:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-10 01:48:00,580 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-10 01:48:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-10 01:48:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-10 01:48:00,581 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-10 01:48:00,582 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-10 01:48:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-10 01:48:00,583 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-10 01:48:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-10 01:48:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-10 01:48:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-10 01:48:00,584 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-10 01:48:00,585 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-10 01:48:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-10 01:48:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-10 01:48:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-10 01:48:00,586 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-10 01:48:00,587 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-10 01:48:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-10 01:48:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-10 01:48:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-10 01:48:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-10 01:48:00,588 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-10 01:48:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-10 01:48:00,589 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-10 01:48:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-10 01:48:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-10 01:48:00,590 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-10 01:48:00,591 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-10 01:48:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-10 01:48:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-10 01:48:00,592 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-10 01:48:00,593 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-10 01:48:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-10 01:48:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-10 01:48:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-10 01:48:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-10 01:48:00,594 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-10 01:48:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-10 01:48:00,595 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-10 01:48:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-10 01:48:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-10 01:48:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-10 01:48:00,596 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-10 01:48:00,597 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-10 01:48:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-10 01:48:00,598 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-10 01:48:00,599 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-10 01:48:00,600 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-10 01:48:00,601 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-10 01:48:00,602 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-10 01:48:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-10 01:48:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-09-10 01:48:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2019-09-10 01:48:00,603 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-10 01:48:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-10 01:48:00,604 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-10 01:48:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-09-10 01:48:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure dll_remove_first [2019-09-10 01:48:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-10 01:48:00,605 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-10 01:48:00,606 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-10 01:48:00,987 INFO L684 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-09-10 01:48:01,188 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-10 01:48:01,189 INFO L283 CfgBuilder]: Removed 2 assume(true) statements. [2019-09-10 01:48:01,190 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:01 BoogieIcfgContainer [2019-09-10 01:48:01,190 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-10 01:48:01,191 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-09-10 01:48:01,191 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-09-10 01:48:01,194 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-09-10 01:48:01,194 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 10.09 01:47:59" (1/3) ... [2019-09-10 01:48:01,195 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42811da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:01, skipping insertion in model container [2019-09-10 01:48:01,195 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 10.09 01:48:00" (2/3) ... [2019-09-10 01:48:01,196 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@42811da1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 10.09 01:48:01, skipping insertion in model container [2019-09-10 01:48:01,196 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 10.09 01:48:01" (3/3) ... [2019-09-10 01:48:01,197 INFO L109 eAbstractionObserver]: Analyzing ICFG dll2n_remove_all.i [2019-09-10 01:48:01,207 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-09-10 01:48:01,214 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-09-10 01:48:01,230 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-09-10 01:48:01,251 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-09-10 01:48:01,251 INFO L378 AbstractCegarLoop]: Hoare is false [2019-09-10 01:48:01,251 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-09-10 01:48:01,251 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-09-10 01:48:01,251 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-09-10 01:48:01,252 INFO L382 AbstractCegarLoop]: Difference is false [2019-09-10 01:48:01,252 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-09-10 01:48:01,252 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-09-10 01:48:01,264 INFO L276 IsEmpty]: Start isEmpty. Operand 36 states. [2019-09-10 01:48:01,274 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:48:01,274 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:01,275 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:01,277 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:01,283 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:01,283 INFO L82 PathProgramCache]: Analyzing trace with hash 1664510762, now seen corresponding path program 1 times [2019-09-10 01:48:01,286 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:01,345 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,346 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:01,346 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,346 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:01,391 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:01,437 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:01,439 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:01,440 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-09-10 01:48:01,440 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:01,450 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:01,466 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:01,467 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:01,468 INFO L87 Difference]: Start difference. First operand 36 states. Second operand 2 states. [2019-09-10 01:48:01,484 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:01,484 INFO L93 Difference]: Finished difference Result 36 states and 40 transitions. [2019-09-10 01:48:01,484 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:01,485 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 17 [2019-09-10 01:48:01,486 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:01,493 INFO L225 Difference]: With dead ends: 36 [2019-09-10 01:48:01,493 INFO L226 Difference]: Without dead ends: 29 [2019-09-10 01:48:01,495 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 [2019-09-10 01:48:01,514 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 29 states. [2019-09-10 01:48:01,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 29 to 29. [2019-09-10 01:48:01,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2019-09-10 01:48:01,531 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 32 transitions. [2019-09-10 01:48:01,532 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 32 transitions. Word has length 17 [2019-09-10 01:48:01,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:01,533 INFO L475 AbstractCegarLoop]: Abstraction has 29 states and 32 transitions. [2019-09-10 01:48:01,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:01,533 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 32 transitions. [2019-09-10 01:48:01,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2019-09-10 01:48:01,534 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:01,534 INFO L399 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:01,534 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:01,535 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:01,535 INFO L82 PathProgramCache]: Analyzing trace with hash 1646407191, now seen corresponding path program 1 times [2019-09-10 01:48:01,535 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:01,537 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,537 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:01,538 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,538 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:01,567 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:01,652 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-09-10 01:48:01,652 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:01,653 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-09-10 01:48:01,653 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:01,654 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-09-10 01:48:01,655 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-09-10 01:48:01,655 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-09-10 01:48:01,656 INFO L87 Difference]: Start difference. First operand 29 states and 32 transitions. Second operand 4 states. [2019-09-10 01:48:01,699 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:01,700 INFO L93 Difference]: Finished difference Result 32 states and 36 transitions. [2019-09-10 01:48:01,700 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-09-10 01:48:01,700 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 17 [2019-09-10 01:48:01,701 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:01,702 INFO L225 Difference]: With dead ends: 32 [2019-09-10 01:48:01,703 INFO L226 Difference]: Without dead ends: 32 [2019-09-10 01:48:01,703 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 [2019-09-10 01:48:01,704 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2019-09-10 01:48:01,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 30. [2019-09-10 01:48:01,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2019-09-10 01:48:01,714 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 33 transitions. [2019-09-10 01:48:01,714 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 33 transitions. Word has length 17 [2019-09-10 01:48:01,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:01,715 INFO L475 AbstractCegarLoop]: Abstraction has 30 states and 33 transitions. [2019-09-10 01:48:01,715 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-09-10 01:48:01,715 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 33 transitions. [2019-09-10 01:48:01,716 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-09-10 01:48:01,716 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:01,717 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, 1, 1, 1, 1, 1] [2019-09-10 01:48:01,717 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:01,717 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:01,717 INFO L82 PathProgramCache]: Analyzing trace with hash 1145985085, now seen corresponding path program 1 times [2019-09-10 01:48:01,718 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:01,719 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,719 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:01,720 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,720 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:01,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:01,801 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:48:01,801 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:01,802 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-09-10 01:48:01,802 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:01,802 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-09-10 01:48:01,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-09-10 01:48:01,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-09-10 01:48:01,803 INFO L87 Difference]: Start difference. First operand 30 states and 33 transitions. Second operand 5 states. [2019-09-10 01:48:01,877 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:01,878 INFO L93 Difference]: Finished difference Result 38 states and 42 transitions. [2019-09-10 01:48:01,878 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-09-10 01:48:01,878 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-09-10 01:48:01,879 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:01,880 INFO L225 Difference]: With dead ends: 38 [2019-09-10 01:48:01,880 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:48:01,881 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-09-10 01:48:01,881 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:48:01,885 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 31. [2019-09-10 01:48:01,886 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 31 states. [2019-09-10 01:48:01,887 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 31 states to 31 states and 34 transitions. [2019-09-10 01:48:01,887 INFO L78 Accepts]: Start accepts. Automaton has 31 states and 34 transitions. Word has length 25 [2019-09-10 01:48:01,887 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:01,887 INFO L475 AbstractCegarLoop]: Abstraction has 31 states and 34 transitions. [2019-09-10 01:48:01,888 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-09-10 01:48:01,888 INFO L276 IsEmpty]: Start isEmpty. Operand 31 states and 34 transitions. [2019-09-10 01:48:01,889 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-10 01:48:01,889 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:01,889 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:01,889 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:01,890 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:01,890 INFO L82 PathProgramCache]: Analyzing trace with hash -63799292, now seen corresponding path program 1 times [2019-09-10 01:48:01,890 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:01,891 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,892 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:01,892 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:01,892 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:01,928 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:01,993 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:48:01,994 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-09-10 01:48:01,994 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-09-10 01:48:01,994 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:01,994 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-09-10 01:48:01,995 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-09-10 01:48:01,995 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:01,995 INFO L87 Difference]: Start difference. First operand 31 states and 34 transitions. Second operand 3 states. [2019-09-10 01:48:02,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:02,021 INFO L93 Difference]: Finished difference Result 35 states and 38 transitions. [2019-09-10 01:48:02,021 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-09-10 01:48:02,021 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 30 [2019-09-10 01:48:02,022 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:02,022 INFO L225 Difference]: With dead ends: 35 [2019-09-10 01:48:02,022 INFO L226 Difference]: Without dead ends: 35 [2019-09-10 01:48:02,023 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-09-10 01:48:02,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2019-09-10 01:48:02,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 34. [2019-09-10 01:48:02,027 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-09-10 01:48:02,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 37 transitions. [2019-09-10 01:48:02,028 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 37 transitions. Word has length 30 [2019-09-10 01:48:02,028 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:02,028 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 37 transitions. [2019-09-10 01:48:02,028 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-09-10 01:48:02,029 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 37 transitions. [2019-09-10 01:48:02,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-09-10 01:48:02,030 INFO L391 BasicCegarLoop]: Found error trace [2019-09-10 01:48:02,030 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-09-10 01:48:02,030 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-09-10 01:48:02,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:02,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1752743034, now seen corresponding path program 1 times [2019-09-10 01:48:02,031 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-09-10 01:48:02,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:02,032 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-09-10 01:48:02,032 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-09-10 01:48:02,032 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-09-10 01:48:02,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-09-10 01:48:02,104 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-09-10 01:48:02,105 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-09-10 01:48:02,105 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-09-10 01:48:02,106 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2019-09-10 01:48:02,109 INFO L207 CegarAbsIntRunner]: [7], [10], [14], [15], [26], [27], [28], [30], [36], [38], [41], [45], [48], [51], [56], [63], [65], [71], [73], [78], [80], [84], [85], [91], [92], [93], [94], [97], [98], [99] [2019-09-10 01:48:02,144 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-09-10 01:48:02,144 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-09-10 01:48:02,201 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-09-10 01:48:02,203 INFO L272 AbstractInterpreter]: Visited 6 different actions 6 times. Never merged. Never widened. Performed 21 root evaluator evaluations with a maximum evaluation depth of 0. Performed 21 inverse root evaluator evaluations with a maximum inverse evaluation depth of 0. Never found a fixpoint. Largest state had 26 variables. [2019-09-10 01:48:02,207 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-09-10 01:48:02,207 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-09-10 01:48:02,242 INFO L227 lantSequenceWeakener]: Weakened 4 states. On average, predicates are now at 100% of their original sizes. [2019-09-10 01:48:02,242 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-09-10 01:48:02,245 INFO L420 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-09-10 01:48:02,245 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-09-10 01:48:02,246 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-09-10 01:48:02,246 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [6] total 6 [2019-09-10 01:48:02,246 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-09-10 01:48:02,246 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-09-10 01:48:02,247 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-09-10 01:48:02,247 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:02,247 INFO L87 Difference]: Start difference. First operand 34 states and 37 transitions. Second operand 2 states. [2019-09-10 01:48:02,248 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-09-10 01:48:02,248 INFO L93 Difference]: Finished difference Result 6 states and 5 transitions. [2019-09-10 01:48:02,248 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-09-10 01:48:02,248 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 30 [2019-09-10 01:48:02,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-09-10 01:48:02,249 INFO L225 Difference]: With dead ends: 6 [2019-09-10 01:48:02,249 INFO L226 Difference]: Without dead ends: 0 [2019-09-10 01:48:02,249 INFO L628 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-09-10 01:48:02,249 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-09-10 01:48:02,250 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-09-10 01:48:02,250 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-09-10 01:48:02,250 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-09-10 01:48:02,250 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-09-10 01:48:02,250 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-09-10 01:48:02,250 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-09-10 01:48:02,251 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-09-10 01:48:02,251 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-09-10 01:48:02,251 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-09-10 01:48:02,256 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 10.09 01:48:02 BoogieIcfgContainer [2019-09-10 01:48:02,256 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-09-10 01:48:02,259 INFO L168 Benchmark]: Toolchain (without parser) took 2484.29 ms. Allocated memory was 134.2 MB in the beginning and 228.6 MB in the end (delta: 94.4 MB). Free memory was 88.4 MB in the beginning and 163.6 MB in the end (delta: -75.3 MB). Peak memory consumption was 19.1 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:02,260 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:02,261 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.22 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 88.4 MB in the beginning and 165.1 MB in the end (delta: -76.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:02,261 INFO L168 Benchmark]: Boogie Preprocessor took 67.17 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 162.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:02,262 INFO L168 Benchmark]: RCFGBuilder took 674.52 ms. Allocated memory is still 201.9 MB. Free memory was 162.4 MB in the beginning and 117.2 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. [2019-09-10 01:48:02,263 INFO L168 Benchmark]: TraceAbstraction took 1065.35 ms. Allocated memory was 201.9 MB in the beginning and 228.6 MB in the end (delta: 26.7 MB). Free memory was 117.2 MB in the beginning and 163.6 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-09-10 01:48:02,267 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 134.2 MB. Free memory is still 108.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.22 ms. Allocated memory was 134.2 MB in the beginning and 201.9 MB in the end (delta: 67.6 MB). Free memory was 88.4 MB in the beginning and 165.1 MB in the end (delta: -76.8 MB). Peak memory consumption was 27.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.17 ms. Allocated memory is still 201.9 MB. Free memory was 165.1 MB in the beginning and 162.4 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 674.52 ms. Allocated memory is still 201.9 MB. Free memory was 162.4 MB in the beginning and 117.2 MB in the end (delta: 45.2 MB). Peak memory consumption was 45.2 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1065.35 ms. Allocated memory was 201.9 MB in the beginning and 228.6 MB in the end (delta: 26.7 MB). Free memory was 117.2 MB in the beginning and 163.6 MB in the end (delta: -46.4 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 612]: call of __VERIFIER_error() unreachable For all program executions holds that call of __VERIFIER_error() unreachable at this location - AllSpecificationsHoldResult: All specifications hold 1 specifications checked. All of them hold - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 49 locations, 1 error locations. SAFE Result, 1.0s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.1s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 133 SDtfs, 25 SDslu, 148 SDs, 0 SdLazy, 29 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.0s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 45 GetRequests, 37 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=36occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.1s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9655172413793104 AbsIntWeakeningRatio, 1.3448275862068966 AbsIntAvgWeakeningVarsNumRemoved, 0.20689655172413793 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 7 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 119 NumberOfCodeBlocks, 119 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 114 ConstructedInterpolants, 0 QuantifiedInterpolants, 4440 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 4/5 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...