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/heap-manipulation/tree-4.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:19:05,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:19:05,670 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:19:05,690 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:19:05,690 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:19:05,692 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:19:05,694 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:19:05,706 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:19:05,708 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:19:05,710 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:19:05,712 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:19:05,714 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:19:05,715 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:19:05,717 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:19:05,719 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:19:05,722 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:19:05,723 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:19:05,725 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:19:05,728 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:19:05,730 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:19:05,733 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:19:05,735 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:19:05,738 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:19:05,739 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:19:05,741 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:19:05,741 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:19:05,742 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:19:05,744 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:19:05,746 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:19:05,748 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:19:05,748 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:19:05,749 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:19:05,749 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:19:05,750 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:19:05,754 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:19:05,754 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:19:05,755 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:19:05,755 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:19:05,756 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:19:05,756 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:19:05,757 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:19:05,758 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 [2019-10-02 22:19:05,787 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:19:05,787 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:19:05,790 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:19:05,790 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:19:05,791 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:19:05,791 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:19:05,791 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:19:05,791 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:19:05,792 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:19:05,792 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:19:05,794 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:19:05,794 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:19:05,794 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:19:05,795 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:19:05,795 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:19:05,795 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:19:05,795 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:19:05,795 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:19:05,796 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:19:05,796 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:19:05,796 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:19:05,796 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:19:05,796 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:19:05,797 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:19:05,797 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:19:05,797 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:19:05,797 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:19:05,798 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:19:05,798 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:19:05,798 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:19:05,849 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:19:05,866 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:19:05,870 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:19:05,871 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:19:05,872 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:19:05,873 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-02 22:19:05,944 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1528a9fd1/2108b5c949bc4807bdcd1efe37c1dba7/FLAG4b1c9eb2a [2019-10-02 22:19:06,454 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:19:06,455 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/tree-4.i [2019-10-02 22:19:06,468 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1528a9fd1/2108b5c949bc4807bdcd1efe37c1dba7/FLAG4b1c9eb2a [2019-10-02 22:19:06,765 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1528a9fd1/2108b5c949bc4807bdcd1efe37c1dba7 [2019-10-02 22:19:06,774 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:19:06,775 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:19:06,776 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:19:06,777 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:19:06,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:19:06,782 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:19:06" (1/1) ... [2019-10-02 22:19:06,786 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@55a05d03 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:06, skipping insertion in model container [2019-10-02 22:19:06,787 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:19:06" (1/1) ... [2019-10-02 22:19:06,795 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:19:06,843 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:19:07,309 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:19:07,322 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:19:07,406 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:19:07,463 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:19:07,464 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07 WrapperNode [2019-10-02 22:19:07,464 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:19:07,465 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:19:07,465 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:19:07,465 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:19:07,478 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,479 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,496 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,496 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,515 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,522 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,526 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (1/1) ... [2019-10-02 22:19:07,532 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:19:07,533 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:19:07,533 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:19:07,533 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:19:07,534 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (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 [2019-10-02 22:19:07,592 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:19:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:19:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 22:19:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 22:19:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-10-02 22:19:07,593 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-10-02 22:19:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-10-02 22:19:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-10-02 22:19:07,594 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:19:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:19:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 22:19:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 22:19:07,595 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:19:07,596 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:19:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:19:07,597 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:19:07,598 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:19:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:19:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:19:07,599 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:19:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:19:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:19:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:19:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:19:07,600 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:19:07,601 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:19:07,602 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:19:07,603 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:19:07,604 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:19:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:19:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:19:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:19:07,605 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:19:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:19:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:19:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:19:07,606 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:19:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:19:07,607 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:19:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:19:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:19:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:19:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:19:07,608 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:19:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:19:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:19:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:19:07,609 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:19:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:19:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:19:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:19:07,610 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:19:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:19:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:19:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:19:07,611 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:19:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:19:07,612 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:19:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:19:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:19:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:19:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:19:07,613 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:19:07,614 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:19:07,615 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:19:07,616 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-10-02 22:19:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-10-02 22:19:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:19:07,617 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:19:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-10-02 22:19:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:19:07,618 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:19:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:19:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-10-02 22:19:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:19:07,619 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:19:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:19:07,620 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:19:08,287 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:19:08,287 INFO L283 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-02 22:19:08,288 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:19:08 BoogieIcfgContainer [2019-10-02 22:19:08,289 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:19:08,290 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:19:08,290 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:19:08,293 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:19:08,293 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:19:06" (1/3) ... [2019-10-02 22:19:08,294 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0cd565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:19:08, skipping insertion in model container [2019-10-02 22:19:08,294 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:07" (2/3) ... [2019-10-02 22:19:08,295 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@3e0cd565 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:19:08, skipping insertion in model container [2019-10-02 22:19:08,295 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:19:08" (3/3) ... [2019-10-02 22:19:08,297 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-4.i [2019-10-02 22:19:08,308 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:19:08,317 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:19:08,332 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:19:08,354 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:19:08,355 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:19:08,355 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:19:08,355 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:19:08,356 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:19:08,356 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:19:08,356 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:19:08,356 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:19:08,370 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states. [2019-10-02 22:19:08,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 22:19:08,381 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:08,382 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] [2019-10-02 22:19:08,384 INFO L418 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:08,389 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:08,390 INFO L82 PathProgramCache]: Analyzing trace with hash 735621620, now seen corresponding path program 1 times [2019-10-02 22:19:08,392 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:08,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,459 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:08,459 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,459 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:08,497 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:08,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:19:08,541 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:08,542 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:19:08,542 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:08,547 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:19:08,562 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:19:08,563 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:19:08,565 INFO L87 Difference]: Start difference. First operand 61 states. Second operand 2 states. [2019-10-02 22:19:08,587 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:08,587 INFO L93 Difference]: Finished difference Result 58 states and 71 transitions. [2019-10-02 22:19:08,587 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:19:08,589 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 20 [2019-10-02 22:19:08,589 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:08,598 INFO L225 Difference]: With dead ends: 58 [2019-10-02 22:19:08,598 INFO L226 Difference]: Without dead ends: 39 [2019-10-02 22:19:08,600 INFO L640 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 [2019-10-02 22:19:08,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 39 states. [2019-10-02 22:19:08,636 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 39 to 39. [2019-10-02 22:19:08,637 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 39 states. [2019-10-02 22:19:08,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 39 states to 39 states and 46 transitions. [2019-10-02 22:19:08,640 INFO L78 Accepts]: Start accepts. Automaton has 39 states and 46 transitions. Word has length 20 [2019-10-02 22:19:08,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:08,641 INFO L475 AbstractCegarLoop]: Abstraction has 39 states and 46 transitions. [2019-10-02 22:19:08,641 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:19:08,641 INFO L276 IsEmpty]: Start isEmpty. Operand 39 states and 46 transitions. [2019-10-02 22:19:08,642 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2019-10-02 22:19:08,642 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:08,642 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] [2019-10-02 22:19:08,643 INFO L418 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:08,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:08,643 INFO L82 PathProgramCache]: Analyzing trace with hash 878641405, now seen corresponding path program 1 times [2019-10-02 22:19:08,643 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:08,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,648 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:08,648 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,649 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:08,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:08,806 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:19:08,806 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:08,807 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:19:08,807 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:08,811 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:19:08,812 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:19:08,813 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:19:08,813 INFO L87 Difference]: Start difference. First operand 39 states and 46 transitions. Second operand 6 states. [2019-10-02 22:19:08,914 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:08,914 INFO L93 Difference]: Finished difference Result 54 states and 63 transitions. [2019-10-02 22:19:08,916 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:19:08,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 21 [2019-10-02 22:19:08,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:08,917 INFO L225 Difference]: With dead ends: 54 [2019-10-02 22:19:08,917 INFO L226 Difference]: Without dead ends: 45 [2019-10-02 22:19:08,918 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2019-10-02 22:19:08,919 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 45 states. [2019-10-02 22:19:08,923 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 45 to 44. [2019-10-02 22:19:08,924 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 22:19:08,925 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 51 transitions. [2019-10-02 22:19:08,925 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 51 transitions. Word has length 21 [2019-10-02 22:19:08,925 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:08,925 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 51 transitions. [2019-10-02 22:19:08,926 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:19:08,926 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 51 transitions. [2019-10-02 22:19:08,927 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2019-10-02 22:19:08,927 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:08,927 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:19:08,927 INFO L418 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:08,927 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:08,928 INFO L82 PathProgramCache]: Analyzing trace with hash -1865861274, now seen corresponding path program 1 times [2019-10-02 22:19:08,928 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,932 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:08,932 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:08,932 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:08,952 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:08,995 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:19:08,995 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:08,995 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-10-02 22:19:08,996 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:08,996 INFO L454 AbstractCegarLoop]: Interpolant automaton has 3 states [2019-10-02 22:19:08,996 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2019-10-02 22:19:08,996 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:19:08,997 INFO L87 Difference]: Start difference. First operand 44 states and 51 transitions. Second operand 3 states. [2019-10-02 22:19:09,062 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:09,062 INFO L93 Difference]: Finished difference Result 47 states and 53 transitions. [2019-10-02 22:19:09,064 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2019-10-02 22:19:09,065 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2019-10-02 22:19:09,065 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:09,066 INFO L225 Difference]: With dead ends: 47 [2019-10-02 22:19:09,066 INFO L226 Difference]: Without dead ends: 47 [2019-10-02 22:19:09,066 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2019-10-02 22:19:09,067 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2019-10-02 22:19:09,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 45. [2019-10-02 22:19:09,070 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 45 states. [2019-10-02 22:19:09,072 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 45 states to 45 states and 51 transitions. [2019-10-02 22:19:09,072 INFO L78 Accepts]: Start accepts. Automaton has 45 states and 51 transitions. Word has length 27 [2019-10-02 22:19:09,072 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:09,072 INFO L475 AbstractCegarLoop]: Abstraction has 45 states and 51 transitions. [2019-10-02 22:19:09,072 INFO L476 AbstractCegarLoop]: Interpolant automaton has 3 states. [2019-10-02 22:19:09,073 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states and 51 transitions. [2019-10-02 22:19:09,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2019-10-02 22:19:09,073 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:09,074 INFO L411 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:19:09,074 INFO L418 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:09,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:09,074 INFO L82 PathProgramCache]: Analyzing trace with hash 394092150, now seen corresponding path program 1 times [2019-10-02 22:19:09,075 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:09,078 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:09,078 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:09,079 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:09,079 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:09,122 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:09,295 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-10-02 22:19:09,296 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:19:09,296 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:19:09,297 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 31 with the following transitions: [2019-10-02 22:19:09,299 INFO L207 CegarAbsIntRunner]: [2], [5], [6], [8], [12], [17], [22], [25], [27], [32], [34], [39], [41], [47], [56], [58], [63], [65], [69], [70], [71], [77], [203], [204], [205], [209], [215], [216], [217] [2019-10-02 22:19:09,334 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:19:09,335 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:19:09,435 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:19:09,437 INFO L272 AbstractInterpreter]: Visited 11 different actions 11 times. Never merged. Never widened. Performed 35 root evaluator evaluations with a maximum evaluation depth of 5. Performed 35 inverse root evaluator evaluations with a maximum inverse evaluation depth of 5. Never found a fixpoint. Largest state had 39 variables. [2019-10-02 22:19:09,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:09,440 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:19:09,481 INFO L227 lantSequenceWeakener]: Weakened 10 states. On average, predicates are now at 78.61% of their original sizes. [2019-10-02 22:19:09,481 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:19:09,517 INFO L420 sIntCurrentIteration]: We unified 29 AI predicates to 29 [2019-10-02 22:19:09,517 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:19:09,518 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:19:09,518 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [11] total 15 [2019-10-02 22:19:09,518 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:09,518 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:19:09,519 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:19:09,519 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:19:09,519 INFO L87 Difference]: Start difference. First operand 45 states and 51 transitions. Second operand 6 states. [2019-10-02 22:19:09,530 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:09,530 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-10-02 22:19:09,531 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:19:09,531 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 30 [2019-10-02 22:19:09,531 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:09,531 INFO L225 Difference]: With dead ends: 9 [2019-10-02 22:19:09,531 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:19:09,532 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:19:09,532 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:19:09,532 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:19:09,532 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:19:09,533 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:19:09,533 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 30 [2019-10-02 22:19:09,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:09,533 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:19:09,533 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:19:09,533 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:19:09,533 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:19:09,538 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:19:09 BoogieIcfgContainer [2019-10-02 22:19:09,539 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:19:09,542 INFO L168 Benchmark]: Toolchain (without parser) took 2765.61 ms. Allocated memory was 132.6 MB in the beginning and 223.3 MB in the end (delta: 90.7 MB). Free memory was 86.6 MB in the beginning and 138.5 MB in the end (delta: -51.9 MB). Peak memory consumption was 38.8 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:09,542 INFO L168 Benchmark]: CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory is still 106.3 MB. There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 22:19:09,543 INFO L168 Benchmark]: CACSL2BoogieTranslator took 687.96 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.1 MB in the beginning and 162.3 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:09,544 INFO L168 Benchmark]: Boogie Preprocessor took 67.73 ms. Allocated memory is still 199.2 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:09,545 INFO L168 Benchmark]: RCFGBuilder took 755.78 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 106.3 MB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:09,546 INFO L168 Benchmark]: TraceAbstraction took 1249.06 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 106.3 MB in the beginning and 138.5 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 7.1 GB. [2019-10-02 22:19:09,549 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21 ms. Allocated memory is still 132.6 MB. Free memory is still 106.3 MB. There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 687.96 ms. Allocated memory was 132.6 MB in the beginning and 199.2 MB in the end (delta: 66.6 MB). Free memory was 86.1 MB in the beginning and 162.3 MB in the end (delta: -76.1 MB). Peak memory consumption was 25.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.73 ms. Allocated memory is still 199.2 MB. Free memory was 162.3 MB in the beginning and 159.6 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 755.78 ms. Allocated memory is still 199.2 MB. Free memory was 159.6 MB in the beginning and 106.3 MB in the end (delta: 53.3 MB). Peak memory consumption was 53.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1249.06 ms. Allocated memory was 199.2 MB in the beginning and 223.3 MB in the end (delta: 24.1 MB). Free memory was 106.3 MB in the beginning and 138.5 MB in the end (delta: -32.1 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - PositiveResult [Line: 554]: 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, 67 locations, 1 error locations. SAFE Result, 1.1s OverallTime, 4 OverallIterations, 2 TraceHistogramMax, 0.2s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 160 SDtfs, 16 SDslu, 208 SDs, 0 SdLazy, 35 SolverSat, 4 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 42 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=61occurred 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, 0.9501915708812261 AbsIntWeakeningRatio, 1.206896551724138 AbsIntAvgWeakeningVarsNumRemoved, 1.1379310344827587 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 3 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 98 NumberOfCodeBlocks, 98 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 94 ConstructedInterpolants, 0 QuantifiedInterpolants, 5992 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 3 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...