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-ext3-properties/dll_nullified-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-03 02:28:39,576 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-03 02:28:39,578 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-03 02:28:39,592 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-03 02:28:39,592 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-03 02:28:39,594 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-03 02:28:39,595 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-03 02:28:39,598 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-03 02:28:39,600 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-03 02:28:39,601 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-03 02:28:39,603 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-03 02:28:39,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-03 02:28:39,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-03 02:28:39,606 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-03 02:28:39,607 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-03 02:28:39,609 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-03 02:28:39,610 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-03 02:28:39,611 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-03 02:28:39,613 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-03 02:28:39,616 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-03 02:28:39,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-03 02:28:39,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-03 02:28:39,625 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-03 02:28:39,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-03 02:28:39,633 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-03 02:28:39,633 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-03 02:28:39,633 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-03 02:28:39,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-03 02:28:39,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-03 02:28:39,641 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-03 02:28:39,641 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-03 02:28:39,644 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-03 02:28:39,646 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-03 02:28:39,647 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-03 02:28:39,649 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-03 02:28:39,652 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-03 02:28:39,653 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-03 02:28:39,654 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-03 02:28:39,654 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-03 02:28:39,655 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-03 02:28:39,659 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-03 02:28:39,660 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 [2019-10-03 02:28:39,685 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-03 02:28:39,686 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-03 02:28:39,686 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-03 02:28:39,686 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-03 02:28:39,687 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-03 02:28:39,688 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-03 02:28:39,688 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-03 02:28:39,688 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-03 02:28:39,688 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-03 02:28:39,689 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-03 02:28:39,690 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-03 02:28:39,690 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-03 02:28:39,690 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-03 02:28:39,690 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-03 02:28:39,691 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-03 02:28:39,691 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-03 02:28:39,691 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-03 02:28:39,691 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-03 02:28:39,691 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-03 02:28:39,692 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-03 02:28:39,692 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-03 02:28:39,692 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-03 02:28:39,692 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-03 02:28:39,693 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-03 02:28:39,693 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-03 02:28:39,693 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-03 02:28:39,693 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-03 02:28:39,694 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-03 02:28:39,694 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-03 02:28:39,694 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-03 02:28:39,728 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-03 02:28:39,743 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-03 02:28:39,747 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-03 02:28:39,749 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-03 02:28:39,750 INFO L275 PluginConnector]: CDTParser initialized [2019-10-03 02:28:39,750 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-2.i [2019-10-03 02:28:39,831 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006a74f25/246d0de313c44360aa61244b8ec402ca/FLAG474b2f783 [2019-10-03 02:28:40,508 INFO L306 CDTParser]: Found 1 translation units. [2019-10-03 02:28:40,510 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-2.i [2019-10-03 02:28:40,528 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006a74f25/246d0de313c44360aa61244b8ec402ca/FLAG474b2f783 [2019-10-03 02:28:40,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/006a74f25/246d0de313c44360aa61244b8ec402ca [2019-10-03 02:28:40,679 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-03 02:28:40,681 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-03 02:28:40,686 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-03 02:28:40,686 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-03 02:28:40,691 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-03 02:28:40,692 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:28:40" (1/1) ... [2019-10-03 02:28:40,697 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@7323381c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:40, skipping insertion in model container [2019-10-03 02:28:40,698 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 03.10 02:28:40" (1/1) ... [2019-10-03 02:28:40,708 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-03 02:28:40,766 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-03 02:28:41,333 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:28:41,351 INFO L188 MainTranslator]: Completed pre-run [2019-10-03 02:28:41,404 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-03 02:28:41,461 INFO L192 MainTranslator]: Completed translation [2019-10-03 02:28:41,461 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41 WrapperNode [2019-10-03 02:28:41,461 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-03 02:28:41,462 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-03 02:28:41,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-03 02:28:41,463 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-03 02:28:41,480 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,480 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,512 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,513 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,542 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,555 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,562 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (1/1) ... [2019-10-03 02:28:41,576 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-03 02:28:41,577 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-03 02:28:41,577 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-03 02:28:41,577 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-03 02:28:41,582 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (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 [2019-10-03 02:28:41,656 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-03 02:28:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-03 02:28:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-03 02:28:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-03 02:28:41,657 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-10-03 02:28:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2019-10-03 02:28:41,658 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-03 02:28:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-03 02:28:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-03 02:28:41,658 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-03 02:28:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-03 02:28:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-03 02:28:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-03 02:28:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-03 02:28:41,659 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-03 02:28:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-03 02:28:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-03 02:28:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-03 02:28:41,660 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-03 02:28:41,662 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-03 02:28:41,663 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-03 02:28:41,664 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-03 02:28:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-03 02:28:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-03 02:28:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-03 02:28:41,665 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-03 02:28:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-03 02:28:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-03 02:28:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-03 02:28:41,666 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-03 02:28:41,667 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-03 02:28:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-03 02:28:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-03 02:28:41,668 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-03 02:28:41,669 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-03 02:28:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-03 02:28:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-03 02:28:41,670 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-03 02:28:41,671 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-03 02:28:41,672 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-03 02:28:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-03 02:28:41,673 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-03 02:28:41,674 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-03 02:28:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-10-03 02:28:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-03 02:28:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-03 02:28:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-10-03 02:28:41,675 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-03 02:28:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-03 02:28:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-10-03 02:28:41,677 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-03 02:28:41,678 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-03 02:28:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-03 02:28:41,679 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-03 02:28:41,680 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-03 02:28:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-03 02:28:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-03 02:28:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-03 02:28:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-03 02:28:41,681 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-03 02:28:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-03 02:28:41,683 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-03 02:28:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-03 02:28:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-03 02:28:41,684 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-03 02:28:41,685 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-03 02:28:41,686 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-03 02:28:41,687 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-03 02:28:41,688 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-03 02:28:41,689 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-03 02:28:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-03 02:28:41,690 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-03 02:28:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-03 02:28:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-03 02:28:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-03 02:28:41,691 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-03 02:28:42,074 INFO L683 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-10-03 02:28:42,312 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-03 02:28:42,312 INFO L283 CfgBuilder]: Removed 3 assume(true) statements. [2019-10-03 02:28:42,314 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:28:42 BoogieIcfgContainer [2019-10-03 02:28:42,314 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-03 02:28:42,316 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-03 02:28:42,316 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-03 02:28:42,320 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-03 02:28:42,320 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 03.10 02:28:40" (1/3) ... [2019-10-03 02:28:42,321 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4406c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:28:42, skipping insertion in model container [2019-10-03 02:28:42,322 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 03.10 02:28:41" (2/3) ... [2019-10-03 02:28:42,324 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6e4406c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 03.10 02:28:42, skipping insertion in model container [2019-10-03 02:28:42,325 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 03.10 02:28:42" (3/3) ... [2019-10-03 02:28:42,329 INFO L109 eAbstractionObserver]: Analyzing ICFG dll_nullified-2.i [2019-10-03 02:28:42,344 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-03 02:28:42,362 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-03 02:28:42,383 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-03 02:28:42,410 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-03 02:28:42,410 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-03 02:28:42,410 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-03 02:28:42,411 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-03 02:28:42,411 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-03 02:28:42,411 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-03 02:28:42,411 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-03 02:28:42,411 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-03 02:28:42,430 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states. [2019-10-03 02:28:42,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-03 02:28:42,443 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:42,444 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:42,447 INFO L418 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:42,452 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:42,453 INFO L82 PathProgramCache]: Analyzing trace with hash 1586150655, now seen corresponding path program 1 times [2019-10-03 02:28:42,455 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:42,524 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:42,524 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:42,524 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:42,591 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:42,702 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:42,705 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:42,706 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-03 02:28:42,706 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:42,715 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-03 02:28:42,738 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-03 02:28:42,739 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-03 02:28:42,743 INFO L87 Difference]: Start difference. First operand 38 states. Second operand 4 states. [2019-10-03 02:28:42,867 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:42,868 INFO L93 Difference]: Finished difference Result 42 states and 51 transitions. [2019-10-03 02:28:42,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:28:42,872 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 20 [2019-10-03 02:28:42,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:42,892 INFO L225 Difference]: With dead ends: 42 [2019-10-03 02:28:42,892 INFO L226 Difference]: Without dead ends: 34 [2019-10-03 02:28:42,901 INFO L640 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 [2019-10-03 02:28:42,927 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2019-10-03 02:28:42,953 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 33. [2019-10-03 02:28:42,955 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2019-10-03 02:28:42,959 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 41 transitions. [2019-10-03 02:28:42,961 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 41 transitions. Word has length 20 [2019-10-03 02:28:42,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:42,962 INFO L475 AbstractCegarLoop]: Abstraction has 33 states and 41 transitions. [2019-10-03 02:28:42,962 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-03 02:28:42,963 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 41 transitions. [2019-10-03 02:28:42,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-03 02:28:42,965 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:42,965 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-03 02:28:42,965 INFO L418 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:42,967 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:42,967 INFO L82 PathProgramCache]: Analyzing trace with hash 1586148733, now seen corresponding path program 1 times [2019-10-03 02:28:42,967 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:42,981 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:42,981 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:42,982 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:42,982 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:43,044 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:43,121 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:43,121 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:43,122 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-10-03 02:28:43,122 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:43,127 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:28:43,128 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:28:43,130 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:28:43,131 INFO L87 Difference]: Start difference. First operand 33 states and 41 transitions. Second operand 5 states. [2019-10-03 02:28:43,195 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:43,195 INFO L93 Difference]: Finished difference Result 41 states and 50 transitions. [2019-10-03 02:28:43,197 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:28:43,198 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 20 [2019-10-03 02:28:43,198 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:43,200 INFO L225 Difference]: With dead ends: 41 [2019-10-03 02:28:43,201 INFO L226 Difference]: Without dead ends: 38 [2019-10-03 02:28:43,202 INFO L640 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 [2019-10-03 02:28:43,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-03 02:28:43,210 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 34. [2019-10-03 02:28:43,211 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2019-10-03 02:28:43,215 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 42 transitions. [2019-10-03 02:28:43,216 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 42 transitions. Word has length 20 [2019-10-03 02:28:43,217 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:43,217 INFO L475 AbstractCegarLoop]: Abstraction has 34 states and 42 transitions. [2019-10-03 02:28:43,218 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:28:43,218 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 42 transitions. [2019-10-03 02:28:43,221 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-03 02:28:43,221 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:43,222 INFO L411 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] [2019-10-03 02:28:43,222 INFO L418 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:43,222 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:43,223 INFO L82 PathProgramCache]: Analyzing trace with hash -796981742, now seen corresponding path program 1 times [2019-10-03 02:28:43,223 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:43,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:43,232 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:43,232 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:43,233 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:43,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:43,332 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:43,332 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:43,332 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-03 02:28:43,333 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:43,335 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-03 02:28:43,336 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-03 02:28:43,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-03 02:28:43,336 INFO L87 Difference]: Start difference. First operand 34 states and 42 transitions. Second operand 3 states. [2019-10-03 02:28:43,439 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:43,439 INFO L93 Difference]: Finished difference Result 38 states and 46 transitions. [2019-10-03 02:28:43,441 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-03 02:28:43,441 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 25 [2019-10-03 02:28:43,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:43,442 INFO L225 Difference]: With dead ends: 38 [2019-10-03 02:28:43,443 INFO L226 Difference]: Without dead ends: 38 [2019-10-03 02:28:43,444 INFO L640 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 [2019-10-03 02:28:43,445 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-03 02:28:43,452 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 37. [2019-10-03 02:28:43,453 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 37 states. [2019-10-03 02:28:43,456 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 37 states to 37 states and 45 transitions. [2019-10-03 02:28:43,457 INFO L78 Accepts]: Start accepts. Automaton has 37 states and 45 transitions. Word has length 25 [2019-10-03 02:28:43,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:43,458 INFO L475 AbstractCegarLoop]: Abstraction has 37 states and 45 transitions. [2019-10-03 02:28:43,459 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-03 02:28:43,459 INFO L276 IsEmpty]: Start isEmpty. Operand 37 states and 45 transitions. [2019-10-03 02:28:43,461 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-03 02:28:43,461 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:43,462 INFO L411 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] [2019-10-03 02:28:43,462 INFO L418 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:43,464 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:43,467 INFO L82 PathProgramCache]: Analyzing trace with hash -1808098992, now seen corresponding path program 1 times [2019-10-03 02:28:43,467 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:43,474 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:43,475 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:43,475 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:43,481 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:43,527 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:43,703 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:43,703 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-03 02:28:43,703 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2019-10-03 02:28:43,703 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:43,704 INFO L454 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-10-03 02:28:43,704 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-10-03 02:28:43,705 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2019-10-03 02:28:43,705 INFO L87 Difference]: Start difference. First operand 37 states and 45 transitions. Second operand 8 states. [2019-10-03 02:28:44,088 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:44,088 INFO L93 Difference]: Finished difference Result 59 states and 73 transitions. [2019-10-03 02:28:44,089 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2019-10-03 02:28:44,089 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 25 [2019-10-03 02:28:44,089 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:44,090 INFO L225 Difference]: With dead ends: 59 [2019-10-03 02:28:44,091 INFO L226 Difference]: Without dead ends: 59 [2019-10-03 02:28:44,091 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2019-10-03 02:28:44,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2019-10-03 02:28:44,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 46. [2019-10-03 02:28:44,098 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 46 states. [2019-10-03 02:28:44,099 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 56 transitions. [2019-10-03 02:28:44,099 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 56 transitions. Word has length 25 [2019-10-03 02:28:44,100 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:44,100 INFO L475 AbstractCegarLoop]: Abstraction has 46 states and 56 transitions. [2019-10-03 02:28:44,100 INFO L476 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-10-03 02:28:44,100 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 56 transitions. [2019-10-03 02:28:44,101 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2019-10-03 02:28:44,101 INFO L403 BasicCegarLoop]: Found error trace [2019-10-03 02:28:44,101 INFO L411 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] [2019-10-03 02:28:44,102 INFO L418 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-03 02:28:44,102 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:44,102 INFO L82 PathProgramCache]: Analyzing trace with hash -1806250028, now seen corresponding path program 1 times [2019-10-03 02:28:44,102 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-03 02:28:44,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:44,107 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-03 02:28:44,107 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-03 02:28:44,107 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-03 02:28:44,121 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-03 02:28:44,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-03 02:28:44,191 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-03 02:28:44,191 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-03 02:28:44,193 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 26 with the following transitions: [2019-10-03 02:28:44,196 INFO L207 CegarAbsIntRunner]: [7], [8], [9], [11], [16], [21], [26], [28], [33], [37], [73], [78], [85], [87], [93], [95], [100], [102], [106], [107], [111], [112], [115], [116], [117] [2019-10-03 02:28:44,247 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-03 02:28:44,248 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-03 02:28:44,358 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-03 02:28:44,361 INFO L272 AbstractInterpreter]: Visited 10 different actions 10 times. Never merged. Never widened. Performed 34 root evaluator evaluations with a maximum evaluation depth of 4. Performed 34 inverse root evaluator evaluations with a maximum inverse evaluation depth of 4. Never found a fixpoint. Largest state had 28 variables. [2019-10-03 02:28:44,366 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-03 02:28:44,367 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-03 02:28:44,444 INFO L227 lantSequenceWeakener]: Weakened 8 states. On average, predicates are now at 85.62% of their original sizes. [2019-10-03 02:28:44,445 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-03 02:28:44,475 INFO L420 sIntCurrentIteration]: We unified 24 AI predicates to 24 [2019-10-03 02:28:44,475 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-03 02:28:44,478 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-03 02:28:44,478 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [5] imperfect sequences [6] total 9 [2019-10-03 02:28:44,478 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-03 02:28:44,479 INFO L454 AbstractCegarLoop]: Interpolant automaton has 5 states [2019-10-03 02:28:44,479 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2019-10-03 02:28:44,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2019-10-03 02:28:44,479 INFO L87 Difference]: Start difference. First operand 46 states and 56 transitions. Second operand 5 states. [2019-10-03 02:28:44,500 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-03 02:28:44,501 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-10-03 02:28:44,501 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-10-03 02:28:44,501 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 25 [2019-10-03 02:28:44,501 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-03 02:28:44,502 INFO L225 Difference]: With dead ends: 9 [2019-10-03 02:28:44,502 INFO L226 Difference]: Without dead ends: 0 [2019-10-03 02:28:44,502 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 25 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-10-03 02:28:44,502 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-03 02:28:44,503 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-03 02:28:44,503 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-03 02:28:44,503 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-03 02:28:44,505 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 25 [2019-10-03 02:28:44,505 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-03 02:28:44,508 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-03 02:28:44,508 INFO L476 AbstractCegarLoop]: Interpolant automaton has 5 states. [2019-10-03 02:28:44,508 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-03 02:28:44,508 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-03 02:28:44,515 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 03.10 02:28:44 BoogieIcfgContainer [2019-10-03 02:28:44,515 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-03 02:28:44,519 INFO L168 Benchmark]: Toolchain (without parser) took 3836.41 ms. Allocated memory was 137.4 MB in the beginning and 218.6 MB in the end (delta: 81.3 MB). Free memory was 83.7 MB in the beginning and 128.6 MB in the end (delta: -44.9 MB). Peak memory consumption was 36.4 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,521 INFO L168 Benchmark]: CDTParser took 0.33 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,524 INFO L168 Benchmark]: CACSL2BoogieTranslator took 776.45 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 83.3 MB in the beginning and 164.7 MB in the end (delta: -81.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,526 INFO L168 Benchmark]: Boogie Preprocessor took 113.66 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 161.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,529 INFO L168 Benchmark]: RCFGBuilder took 737.71 ms. Allocated memory is still 199.2 MB. Free memory was 161.6 MB in the beginning and 116.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,530 INFO L168 Benchmark]: TraceAbstraction took 2199.62 ms. Allocated memory was 199.2 MB in the beginning and 218.6 MB in the end (delta: 19.4 MB). Free memory was 116.2 MB in the beginning and 128.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. [2019-10-03 02:28:44,544 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.33 ms. Allocated memory is still 137.4 MB. Free memory was 103.3 MB in the beginning and 103.1 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 776.45 ms. Allocated memory was 137.4 MB in the beginning and 199.2 MB in the end (delta: 61.9 MB). Free memory was 83.3 MB in the beginning and 164.7 MB in the end (delta: -81.4 MB). Peak memory consumption was 23.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 113.66 ms. Allocated memory is still 199.2 MB. Free memory was 164.7 MB in the beginning and 161.6 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.71 ms. Allocated memory is still 199.2 MB. Free memory was 161.6 MB in the beginning and 116.9 MB in the end (delta: 44.7 MB). Peak memory consumption was 44.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2199.62 ms. Allocated memory was 199.2 MB in the beginning and 218.6 MB in the end (delta: 19.4 MB). Free memory was 116.2 MB in the beginning and 128.6 MB in the end (delta: -12.4 MB). Peak memory consumption was 7.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 604]: 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 7 procedures, 45 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 5 OverallIterations, 1 TraceHistogramMax, 0.7s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 149 SDtfs, 55 SDslu, 356 SDs, 0 SdLazy, 145 SolverSat, 5 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 50 GetRequests, 29 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=46occurred in iteration=4, 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, 0.9354166666666667 AbsIntWeakeningRatio, 1.2916666666666667 AbsIntAvgWeakeningVarsNumRemoved, 1.0 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 19 StatesRemovedByMinimization, 4 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 115 NumberOfCodeBlocks, 115 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 110 ConstructedInterpolants, 0 QuantifiedInterpolants, 5064 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 2/3 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...