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-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-673a906-m [2019-10-02 22:18:58,538 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-10-02 22:18:58,540 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-10-02 22:18:58,561 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-10-02 22:18:58,561 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-10-02 22:18:58,562 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-10-02 22:18:58,564 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-10-02 22:18:58,566 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-10-02 22:18:58,567 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-10-02 22:18:58,568 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-10-02 22:18:58,569 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-10-02 22:18:58,570 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-10-02 22:18:58,570 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-10-02 22:18:58,571 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-10-02 22:18:58,572 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-10-02 22:18:58,573 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-10-02 22:18:58,574 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-10-02 22:18:58,575 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-10-02 22:18:58,577 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-10-02 22:18:58,579 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-10-02 22:18:58,580 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-10-02 22:18:58,581 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-10-02 22:18:58,582 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-10-02 22:18:58,583 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-10-02 22:18:58,586 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-10-02 22:18:58,586 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-10-02 22:18:58,586 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-10-02 22:18:58,587 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-10-02 22:18:58,588 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-10-02 22:18:58,591 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-10-02 22:18:58,591 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-10-02 22:18:58,592 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-10-02 22:18:58,593 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-10-02 22:18:58,593 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-10-02 22:18:58,594 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-10-02 22:18:58,595 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-10-02 22:18:58,595 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-10-02 22:18:58,595 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-10-02 22:18:58,596 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-10-02 22:18:58,597 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-10-02 22:18:58,597 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-10-02 22:18:58,598 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 22:18:58,612 INFO L113 SettingsManager]: Loading preferences was successful [2019-10-02 22:18:58,612 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-10-02 22:18:58,613 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2019-10-02 22:18:58,613 INFO L138 SettingsManager]: * Log level for plugins=info [2019-10-02 22:18:58,614 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2019-10-02 22:18:58,614 INFO L138 SettingsManager]: * User list type=DISABLED [2019-10-02 22:18:58,614 INFO L138 SettingsManager]: * Ignore calls to and inside polymorphic procedures=false [2019-10-02 22:18:58,614 INFO L138 SettingsManager]: * Ignore calls to recursive procedures=false [2019-10-02 22:18:58,614 INFO L136 SettingsManager]: Preferences of Abstract Interpretation differ from their defaults: [2019-10-02 22:18:58,615 INFO L138 SettingsManager]: * Abstract domain=IntervalDomain [2019-10-02 22:18:58,615 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * sizeof long=4 [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-10-02 22:18:58,616 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-10-02 22:18:58,617 INFO L138 SettingsManager]: * sizeof long double=12 [2019-10-02 22:18:58,617 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-10-02 22:18:58,617 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-10-02 22:18:58,617 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-10-02 22:18:58,617 INFO L138 SettingsManager]: * Remove goto edges from RCFG=true [2019-10-02 22:18:58,618 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-10-02 22:18:58,618 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:18:58,618 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-10-02 22:18:58,618 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-10-02 22:18:58,619 INFO L138 SettingsManager]: * Trace refinement strategy=TAIPAN [2019-10-02 22:18:58,619 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-10-02 22:18:58,619 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-10-02 22:18:58,619 INFO L138 SettingsManager]: * Abstract interpretation Mode=USE_PREDICATES [2019-10-02 22:18:58,647 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-10-02 22:18:58,664 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-10-02 22:18:58,667 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-10-02 22:18:58,670 INFO L271 PluginConnector]: Initializing CDTParser... [2019-10-02 22:18:58,671 INFO L275 PluginConnector]: CDTParser initialized [2019-10-02 22:18:58,672 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/heap-manipulation/tree-2.i [2019-10-02 22:18:58,729 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62a06636/cd84ee47d60245cc9e8afdb4a9035f3c/FLAGd2e70afcd [2019-10-02 22:18:59,234 INFO L306 CDTParser]: Found 1 translation units. [2019-10-02 22:18:59,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/heap-manipulation/tree-2.i [2019-10-02 22:18:59,255 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62a06636/cd84ee47d60245cc9e8afdb4a9035f3c/FLAGd2e70afcd [2019-10-02 22:18:59,554 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c62a06636/cd84ee47d60245cc9e8afdb4a9035f3c [2019-10-02 22:18:59,562 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-10-02 22:18:59,563 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-10-02 22:18:59,565 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-10-02 22:18:59,565 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-10-02 22:18:59,568 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-10-02 22:18:59,569 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:59" (1/1) ... [2019-10-02 22:18:59,572 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@f23073 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:18:59, skipping insertion in model container [2019-10-02 22:18:59,572 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 02.10 10:18:59" (1/1) ... [2019-10-02 22:18:59,580 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-10-02 22:18:59,628 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-10-02 22:19:00,073 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:19:00,083 INFO L188 MainTranslator]: Completed pre-run [2019-10-02 22:19:00,152 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-10-02 22:19:00,210 INFO L192 MainTranslator]: Completed translation [2019-10-02 22:19:00,210 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00 WrapperNode [2019-10-02 22:19:00,210 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-10-02 22:19:00,211 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-10-02 22:19:00,211 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-10-02 22:19:00,211 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-10-02 22:19:00,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,243 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,243 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,272 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,279 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,283 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... [2019-10-02 22:19:00,289 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-10-02 22:19:00,290 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-10-02 22:19:00,290 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-10-02 22:19:00,290 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-10-02 22:19:00,291 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure fail [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure inspect [2019-10-02 22:19:00,347 INFO L138 BoogieDeclarations]: Found implementation of procedure create_tree [2019-10-02 22:19:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure free_tree [2019-10-02 22:19:00,348 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-10-02 22:19:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-10-02 22:19:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-10-02 22:19:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-10-02 22:19:00,348 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-10-02 22:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-10-02 22:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-10-02 22:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-10-02 22:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-10-02 22:19:00,349 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-10-02 22:19:00,350 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-10-02 22:19:00,351 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-10-02 22:19:00,352 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-10-02 22:19:00,353 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-10-02 22:19:00,354 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-10-02 22:19:00,355 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-10-02 22:19:00,356 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-10-02 22:19:00,357 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-10-02 22:19:00,358 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-10-02 22:19:00,359 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-10-02 22:19:00,360 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-10-02 22:19:00,361 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure fail [2019-10-02 22:19:00,362 INFO L130 BoogieDeclarations]: Found specification of procedure inspect [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure create_tree [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-10-02 22:19:00,363 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-10-02 22:19:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure free_tree [2019-10-02 22:19:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-10-02 22:19:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-10-02 22:19:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-10-02 22:19:00,364 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-10-02 22:19:01,025 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-10-02 22:19:01,025 INFO L283 CfgBuilder]: Removed 11 assume(true) statements. [2019-10-02 22:19:01,026 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:19:01 BoogieIcfgContainer [2019-10-02 22:19:01,027 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-10-02 22:19:01,028 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-10-02 22:19:01,028 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-10-02 22:19:01,031 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-10-02 22:19:01,032 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 02.10 10:18:59" (1/3) ... [2019-10-02 22:19:01,032 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732bc1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:19:01, skipping insertion in model container [2019-10-02 22:19:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 02.10 10:19:00" (2/3) ... [2019-10-02 22:19:01,033 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@732bc1b9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 02.10 10:19:01, skipping insertion in model container [2019-10-02 22:19:01,033 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 02.10 10:19:01" (3/3) ... [2019-10-02 22:19:01,035 INFO L109 eAbstractionObserver]: Analyzing ICFG tree-2.i [2019-10-02 22:19:01,045 INFO L152 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-10-02 22:19:01,053 INFO L164 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2019-10-02 22:19:01,070 INFO L252 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2019-10-02 22:19:01,098 INFO L377 AbstractCegarLoop]: Interprodecural is true [2019-10-02 22:19:01,098 INFO L378 AbstractCegarLoop]: Hoare is false [2019-10-02 22:19:01,099 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-10-02 22:19:01,099 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-10-02 22:19:01,099 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-10-02 22:19:01,099 INFO L382 AbstractCegarLoop]: Difference is false [2019-10-02 22:19:01,100 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-10-02 22:19:01,100 INFO L388 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-10-02 22:19:01,113 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states. [2019-10-02 22:19:01,123 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2019-10-02 22:19:01,123 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:01,124 INFO L411 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-10-02 22:19:01,125 INFO L418 AbstractCegarLoop]: === Iteration 1 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:01,130 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:01,130 INFO L82 PathProgramCache]: Analyzing trace with hash -133668864, now seen corresponding path program 1 times [2019-10-02 22:19:01,132 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:01,194 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,195 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:01,195 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,195 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:01,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:01,270 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 22:19:01,272 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:01,272 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2019-10-02 22:19:01,273 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:01,277 INFO L454 AbstractCegarLoop]: Interpolant automaton has 2 states [2019-10-02 22:19:01,287 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2019-10-02 22:19:01,288 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2019-10-02 22:19:01,290 INFO L87 Difference]: Start difference. First operand 60 states. Second operand 2 states. [2019-10-02 22:19:01,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:01,313 INFO L93 Difference]: Finished difference Result 57 states and 69 transitions. [2019-10-02 22:19:01,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2019-10-02 22:19:01,314 INFO L78 Accepts]: Start accepts. Automaton has 2 states. Word has length 19 [2019-10-02 22:19:01,315 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:01,324 INFO L225 Difference]: With dead ends: 57 [2019-10-02 22:19:01,324 INFO L226 Difference]: Without dead ends: 38 [2019-10-02 22:19:01,326 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 22:19:01,344 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 38 states. [2019-10-02 22:19:01,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 38 to 38. [2019-10-02 22:19:01,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 38 states. [2019-10-02 22:19:01,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 38 states to 38 states and 44 transitions. [2019-10-02 22:19:01,365 INFO L78 Accepts]: Start accepts. Automaton has 38 states and 44 transitions. Word has length 19 [2019-10-02 22:19:01,365 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:01,365 INFO L475 AbstractCegarLoop]: Abstraction has 38 states and 44 transitions. [2019-10-02 22:19:01,365 INFO L476 AbstractCegarLoop]: Interpolant automaton has 2 states. [2019-10-02 22:19:01,365 INFO L276 IsEmpty]: Start isEmpty. Operand 38 states and 44 transitions. [2019-10-02 22:19:01,366 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2019-10-02 22:19:01,366 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:01,366 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 22:19:01,366 INFO L418 AbstractCegarLoop]: === Iteration 2 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:01,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:01,367 INFO L82 PathProgramCache]: Analyzing trace with hash -1510329812, now seen corresponding path program 1 times [2019-10-02 22:19:01,367 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:01,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,372 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:01,372 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,372 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:01,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:01,559 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 22:19:01,559 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:01,559 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2019-10-02 22:19:01,559 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:01,561 INFO L454 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-10-02 22:19:01,561 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-10-02 22:19:01,562 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2019-10-02 22:19:01,562 INFO L87 Difference]: Start difference. First operand 38 states and 44 transitions. Second operand 6 states. [2019-10-02 22:19:01,629 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:01,629 INFO L93 Difference]: Finished difference Result 52 states and 59 transitions. [2019-10-02 22:19:01,630 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-10-02 22:19:01,630 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 20 [2019-10-02 22:19:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:01,632 INFO L225 Difference]: With dead ends: 52 [2019-10-02 22:19:01,632 INFO L226 Difference]: Without dead ends: 44 [2019-10-02 22:19:01,633 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 22:19:01,633 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 44 states. [2019-10-02 22:19:01,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 44 to 43. [2019-10-02 22:19:01,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-02 22:19:01,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 49 transitions. [2019-10-02 22:19:01,639 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 49 transitions. Word has length 20 [2019-10-02 22:19:01,640 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:01,640 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 49 transitions. [2019-10-02 22:19:01,640 INFO L476 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-10-02 22:19:01,640 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 49 transitions. [2019-10-02 22:19:01,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2019-10-02 22:19:01,641 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:01,641 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] [2019-10-02 22:19:01,641 INFO L418 AbstractCegarLoop]: === Iteration 3 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:01,642 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:01,642 INFO L82 PathProgramCache]: Analyzing trace with hash -83408221, now seen corresponding path program 1 times [2019-10-02 22:19:01,642 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,646 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:01,646 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,646 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:01,684 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:01,751 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 22:19:01,751 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:01,751 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2019-10-02 22:19:01,752 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:01,752 INFO L454 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-10-02 22:19:01,752 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-10-02 22:19:01,752 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-10-02 22:19:01,753 INFO L87 Difference]: Start difference. First operand 43 states and 49 transitions. Second operand 4 states. [2019-10-02 22:19:01,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:01,842 INFO L93 Difference]: Finished difference Result 46 states and 52 transitions. [2019-10-02 22:19:01,842 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:19:01,842 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 26 [2019-10-02 22:19:01,843 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:01,844 INFO L225 Difference]: With dead ends: 46 [2019-10-02 22:19:01,844 INFO L226 Difference]: Without dead ends: 46 [2019-10-02 22:19:01,844 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-10-02 22:19:01,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2019-10-02 22:19:01,848 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 44. [2019-10-02 22:19:01,848 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2019-10-02 22:19:01,849 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 50 transitions. [2019-10-02 22:19:01,850 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 50 transitions. Word has length 26 [2019-10-02 22:19:01,850 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:01,850 INFO L475 AbstractCegarLoop]: Abstraction has 44 states and 50 transitions. [2019-10-02 22:19:01,850 INFO L476 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-10-02 22:19:01,850 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 50 transitions. [2019-10-02 22:19:01,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2019-10-02 22:19:01,851 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:01,851 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] [2019-10-02 22:19:01,852 INFO L418 AbstractCegarLoop]: === Iteration 4 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:01,852 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:01,852 INFO L82 PathProgramCache]: Analyzing trace with hash 1833000865, now seen corresponding path program 1 times [2019-10-02 22:19:01,852 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:01,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,856 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:01,856 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:01,856 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:01,883 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:02,024 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2019-10-02 22:19:02,025 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-10-02 22:19:02,025 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2019-10-02 22:19:02,025 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:02,026 INFO L454 AbstractCegarLoop]: Interpolant automaton has 10 states [2019-10-02 22:19:02,026 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2019-10-02 22:19:02,027 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2019-10-02 22:19:02,027 INFO L87 Difference]: Start difference. First operand 44 states and 50 transitions. Second operand 10 states. [2019-10-02 22:19:02,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:02,312 INFO L93 Difference]: Finished difference Result 54 states and 62 transitions. [2019-10-02 22:19:02,313 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2019-10-02 22:19:02,313 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2019-10-02 22:19:02,313 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:02,314 INFO L225 Difference]: With dead ends: 54 [2019-10-02 22:19:02,314 INFO L226 Difference]: Without dead ends: 54 [2019-10-02 22:19:02,315 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2019-10-02 22:19:02,315 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2019-10-02 22:19:02,319 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 43. [2019-10-02 22:19:02,319 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 43 states. [2019-10-02 22:19:02,320 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 43 states to 43 states and 48 transitions. [2019-10-02 22:19:02,320 INFO L78 Accepts]: Start accepts. Automaton has 43 states and 48 transitions. Word has length 29 [2019-10-02 22:19:02,321 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:02,321 INFO L475 AbstractCegarLoop]: Abstraction has 43 states and 48 transitions. [2019-10-02 22:19:02,321 INFO L476 AbstractCegarLoop]: Interpolant automaton has 10 states. [2019-10-02 22:19:02,321 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states and 48 transitions. [2019-10-02 22:19:02,322 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2019-10-02 22:19:02,322 INFO L403 BasicCegarLoop]: Found error trace [2019-10-02 22:19:02,323 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, 1, 1, 1] [2019-10-02 22:19:02,323 INFO L418 AbstractCegarLoop]: === Iteration 5 === [failErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2019-10-02 22:19:02,323 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:02,323 INFO L82 PathProgramCache]: Analyzing trace with hash 1756276772, now seen corresponding path program 1 times [2019-10-02 22:19:02,324 INFO L69 tionRefinementEngine]: Using refinement strategy TaipanRefinementStrategy [2019-10-02 22:19:02,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:02,328 INFO L103 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-10-02 22:19:02,328 INFO L119 rtionOrderModulation]: Craig_TreeInterpolation forces the order to NOT_INCREMENTALLY [2019-10-02 22:19:02,328 INFO L289 anRefinementStrategy]: Using traceCheck mode SMTINTERPOL with AssertCodeBlockOrder NOT_INCREMENTALLY (IT: Craig_TreeInterpolation) [2019-10-02 22:19:02,395 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-10-02 22:19:02,805 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 22:19:02,805 INFO L300 seRefinementStrategy]: The current sequences of interpolants are not accepted, trying to find more. [2019-10-02 22:19:02,805 INFO L193 anRefinementStrategy]: Switched to InterpolantGenerator mode ABSTRACT_INTERPRETATION [2019-10-02 22:19:02,806 INFO L205 CegarAbsIntRunner]: Running AI on error trace of length 34 with the following transitions: [2019-10-02 22:19:02,809 INFO L207 CegarAbsIntRunner]: [2], [5], [6], [8], [12], [17], [22], [25], [27], [32], [34], [39], [41], [50], [52], [57], [59], [63], [64], [65], [74], [113], [117], [120], [144], [197], [198], [199], [207], [209], [210], [211] [2019-10-02 22:19:02,868 INFO L148 AbstractInterpreter]: Using domain IntervalDomain [2019-10-02 22:19:02,868 INFO L101 FixpointEngine]: Starting fixpoint engine with domain IntervalDomain (maxUnwinding=3, maxParallelStates=2) [2019-10-02 22:19:03,022 INFO L266 AbstractInterpreter]: Error location(s) were unreachable [2019-10-02 22:19:03,023 INFO L272 AbstractInterpreter]: Visited 17 different actions 17 times. Never merged. Never widened. Performed 41 root evaluator evaluations with a maximum evaluation depth of 7. Performed 41 inverse root evaluator evaluations with a maximum inverse evaluation depth of 7. Never found a fixpoint. Largest state had 39 variables. [2019-10-02 22:19:03,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-10-02 22:19:03,028 INFO L403 sIntCurrentIteration]: Generating AbsInt predicates [2019-10-02 22:19:03,118 INFO L227 lantSequenceWeakener]: Weakened 16 states. On average, predicates are now at 75.28% of their original sizes. [2019-10-02 22:19:03,119 INFO L418 sIntCurrentIteration]: Unifying AI predicates [2019-10-02 22:19:03,170 INFO L420 sIntCurrentIteration]: We unified 32 AI predicates to 32 [2019-10-02 22:19:03,170 INFO L429 sIntCurrentIteration]: Finished generation of AbsInt predicates [2019-10-02 22:19:03,172 INFO L312 seRefinementStrategy]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2019-10-02 22:19:03,172 INFO L327 seRefinementStrategy]: Number of different interpolants: perfect sequences [9] imperfect sequences [13] total 20 [2019-10-02 22:19:03,172 INFO L257 anRefinementStrategy]: Using the first perfect interpolant sequence [2019-10-02 22:19:03,173 INFO L454 AbstractCegarLoop]: Interpolant automaton has 9 states [2019-10-02 22:19:03,173 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2019-10-02 22:19:03,174 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-02 22:19:03,174 INFO L87 Difference]: Start difference. First operand 43 states and 48 transitions. Second operand 9 states. [2019-10-02 22:19:03,182 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-10-02 22:19:03,184 INFO L93 Difference]: Finished difference Result 9 states and 8 transitions. [2019-10-02 22:19:03,184 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-10-02 22:19:03,185 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 33 [2019-10-02 22:19:03,185 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-10-02 22:19:03,185 INFO L225 Difference]: With dead ends: 9 [2019-10-02 22:19:03,185 INFO L226 Difference]: Without dead ends: 0 [2019-10-02 22:19:03,186 INFO L640 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 25 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=52, Unknown=0, NotChecked=0, Total=72 [2019-10-02 22:19:03,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2019-10-02 22:19:03,187 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2019-10-02 22:19:03,187 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 0 states. [2019-10-02 22:19:03,188 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2019-10-02 22:19:03,188 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 33 [2019-10-02 22:19:03,188 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-10-02 22:19:03,188 INFO L475 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2019-10-02 22:19:03,188 INFO L476 AbstractCegarLoop]: Interpolant automaton has 9 states. [2019-10-02 22:19:03,188 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2019-10-02 22:19:03,189 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2019-10-02 22:19:03,205 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 02.10 10:19:03 BoogieIcfgContainer [2019-10-02 22:19:03,206 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-10-02 22:19:03,209 INFO L168 Benchmark]: Toolchain (without parser) took 3643.94 ms. Allocated memory was 140.5 MB in the beginning and 262.1 MB in the end (delta: 121.6 MB). Free memory was 86.4 MB in the beginning and 226.1 MB in the end (delta: -139.7 MB). Peak memory consumption was 105.7 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,210 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,211 INFO L168 Benchmark]: CACSL2BoogieTranslator took 646.14 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.2 MB in the beginning and 162.6 MB in the end (delta: -76.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,211 INFO L168 Benchmark]: Boogie Preprocessor took 78.33 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 159.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,212 INFO L168 Benchmark]: RCFGBuilder took 737.04 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 107.2 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,213 INFO L168 Benchmark]: TraceAbstraction took 2178.02 ms. Allocated memory was 200.3 MB in the beginning and 262.1 MB in the end (delta: 61.9 MB). Free memory was 106.6 MB in the beginning and 226.1 MB in the end (delta: -119.5 MB). Peak memory consumption was 66.1 MB. Max. memory is 7.1 GB. [2019-10-02 22:19:03,217 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 140.5 MB. Free memory was 106.4 MB in the beginning and 106.2 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 646.14 ms. Allocated memory was 140.5 MB in the beginning and 200.3 MB in the end (delta: 59.8 MB). Free memory was 86.2 MB in the beginning and 162.6 MB in the end (delta: -76.4 MB). Peak memory consumption was 20.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 78.33 ms. Allocated memory is still 200.3 MB. Free memory was 162.6 MB in the beginning and 159.5 MB in the end (delta: 3.1 MB). Peak memory consumption was 3.1 MB. Max. memory is 7.1 GB. * RCFGBuilder took 737.04 ms. Allocated memory is still 200.3 MB. Free memory was 159.5 MB in the beginning and 107.2 MB in the end (delta: 52.3 MB). Peak memory consumption was 52.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2178.02 ms. Allocated memory was 200.3 MB in the beginning and 262.1 MB in the end (delta: 61.9 MB). Free memory was 106.6 MB in the beginning and 226.1 MB in the end (delta: -119.5 MB). Peak memory consumption was 66.1 MB. 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, 66 locations, 1 error locations. SAFE Result, 2.1s OverallTime, 5 OverallIterations, 2 TraceHistogramMax, 0.5s AutomataDifference, 0.0s DeadEndRemovalTime, 0.0s HoareAnnotationTime, HoareTripleCheckerStatistics: 180 SDtfs, 74 SDslu, 416 SDs, 0 SdLazy, 171 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 62 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=60occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.2s AbstIntTime, 1 AbstIntIterations, 1 AbstIntStrong, 0.9225694444444446 AbsIntWeakeningRatio, 1.1875 AbsIntAvgWeakeningVarsNumRemoved, 2.09375 AbsIntAvgWeakenedConjuncts, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 5 MinimizatonAttempts, 14 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TraceCheckStatistics: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.8s InterpolantComputationTime, 127 NumberOfCodeBlocks, 127 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 122 ConstructedInterpolants, 0 QuantifiedInterpolants, 21974 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 5 InterpolantComputations, 4 PerfectInterpolantSequences, 7/8 InterpolantCoveringCapability, InvariantSynthesisStatistics: No data available, InterpolantConsolidationStatistics: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be correct! Received shutdown request...