java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/SifaC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf --sifa.abstract.domain IntervalDomain -i ../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.24-112bae1 [2019-09-06 08:59:47,624 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-09-06 08:59:47,626 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-09-06 08:59:47,637 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-09-06 08:59:47,638 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-09-06 08:59:47,639 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-09-06 08:59:47,641 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-09-06 08:59:47,645 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-09-06 08:59:47,647 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-09-06 08:59:47,648 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-09-06 08:59:47,654 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-09-06 08:59:47,657 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-09-06 08:59:47,657 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-09-06 08:59:47,658 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-09-06 08:59:47,661 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-09-06 08:59:47,663 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-09-06 08:59:47,663 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-09-06 08:59:47,666 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-09-06 08:59:47,668 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-09-06 08:59:47,673 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-09-06 08:59:47,675 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-09-06 08:59:47,677 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-09-06 08:59:47,679 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-09-06 08:59:47,680 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-09-06 08:59:47,684 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-09-06 08:59:47,684 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-09-06 08:59:47,685 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-09-06 08:59:47,688 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-09-06 08:59:47,688 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-09-06 08:59:47,689 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-09-06 08:59:47,689 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-09-06 08:59:47,690 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-09-06 08:59:47,693 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-09-06 08:59:47,694 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-09-06 08:59:47,698 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-09-06 08:59:47,698 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-09-06 08:59:47,699 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-09-06 08:59:47,699 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-09-06 08:59:47,699 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-09-06 08:59:47,700 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-09-06 08:59:47,701 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-09-06 08:59:47,702 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2019-09-06 08:59:47,727 INFO L113 SettingsManager]: Loading preferences was successful [2019-09-06 08:59:47,727 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-09-06 08:59:47,728 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-09-06 08:59:47,728 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-09-06 08:59:47,729 INFO L138 SettingsManager]: * Use SBE=true [2019-09-06 08:59:47,729 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-09-06 08:59:47,729 INFO L138 SettingsManager]: * sizeof long=4 [2019-09-06 08:59:47,729 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-09-06 08:59:47,729 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-09-06 08:59:47,730 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-09-06 08:59:47,730 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2019-09-06 08:59:47,730 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-09-06 08:59:47,730 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2019-09-06 08:59:47,730 INFO L138 SettingsManager]: * sizeof long double=12 [2019-09-06 08:59:47,731 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2019-09-06 08:59:47,731 INFO L138 SettingsManager]: * Use constant arrays=true [2019-09-06 08:59:47,731 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2019-09-06 08:59:47,731 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-09-06 08:59:47,731 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-09-06 08:59:47,732 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-09-06 08:59:47,732 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-09-06 08:59:47,732 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-06 08:59:47,732 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-09-06 08:59:47,732 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-09-06 08:59:47,733 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2019-09-06 08:59:47,733 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-09-06 08:59:47,733 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-09-06 08:59:47,733 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-09-06 08:59:47,733 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.sifa: Abstract Domain -> IntervalDomain [2019-09-06 08:59:47,762 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-09-06 08:59:47,775 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-09-06 08:59:47,778 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-09-06 08:59:47,780 INFO L271 PluginConnector]: Initializing CDTParser... [2019-09-06 08:59:47,780 INFO L275 PluginConnector]: CDTParser initialized [2019-09-06 08:59:47,781 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-09-06 08:59:47,840 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716764928/58a394bfc0d345278589fb79114a7c91/FLAG5882326cc [2019-09-06 08:59:48,357 INFO L306 CDTParser]: Found 1 translation units. [2019-09-06 08:59:48,357 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/dll-queue-2.i [2019-09-06 08:59:48,371 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716764928/58a394bfc0d345278589fb79114a7c91/FLAG5882326cc [2019-09-06 08:59:48,665 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/716764928/58a394bfc0d345278589fb79114a7c91 [2019-09-06 08:59:48,675 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-09-06 08:59:48,677 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2019-09-06 08:59:48,678 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-09-06 08:59:48,678 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-09-06 08:59:48,681 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-09-06 08:59:48,682 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.09 08:59:48" (1/1) ... [2019-09-06 08:59:48,685 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@28d02a9e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:48, skipping insertion in model container [2019-09-06 08:59:48,685 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.09 08:59:48" (1/1) ... [2019-09-06 08:59:48,691 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-09-06 08:59:48,747 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-09-06 08:59:49,136 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-06 08:59:49,152 INFO L188 MainTranslator]: Completed pre-run [2019-09-06 08:59:49,219 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-09-06 08:59:49,267 INFO L192 MainTranslator]: Completed translation [2019-09-06 08:59:49,268 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49 WrapperNode [2019-09-06 08:59:49,268 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-09-06 08:59:49,269 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-09-06 08:59:49,269 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-09-06 08:59:49,269 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-09-06 08:59:49,283 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,284 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,301 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,301 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,322 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,334 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,338 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... [2019-09-06 08:59:49,345 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-09-06 08:59:49,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-09-06 08:59:49,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-09-06 08:59:49,346 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-09-06 08:59:49,347 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.09 08:59:49" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-09-06 08:59:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-09-06 08:59:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-09-06 08:59:49,412 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-09-06 08:59:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-09-06 08:59:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-09-06 08:59:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-09-06 08:59:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-09-06 08:59:49,413 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-09-06 08:59:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-09-06 08:59:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-09-06 08:59:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-09-06 08:59:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-09-06 08:59:49,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-09-06 08:59:49,415 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-09-06 08:59:49,416 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-09-06 08:59:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-09-06 08:59:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-09-06 08:59:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-09-06 08:59:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-09-06 08:59:49,417 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-09-06 08:59:49,418 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-09-06 08:59:49,419 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-09-06 08:59:49,420 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-09-06 08:59:49,421 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-09-06 08:59:49,422 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-09-06 08:59:49,423 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-09-06 08:59:49,424 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-09-06 08:59:49,425 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-09-06 08:59:49,426 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-09-06 08:59:49,427 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-09-06 08:59:49,428 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-09-06 08:59:49,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2019-09-06 08:59:49,430 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-09-06 08:59:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-09-06 08:59:49,431 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-09-06 08:59:50,101 INFO L278 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-09-06 08:59:50,102 INFO L283 CfgBuilder]: Removed 31 assume(true) statements. [2019-09-06 08:59:50,103 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.09 08:59:50 BoogieIcfgContainer [2019-09-06 08:59:50,103 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-09-06 08:59:50,104 INFO L113 PluginConnector]: ------------------------Sifa---------------------------- [2019-09-06 08:59:50,104 INFO L271 PluginConnector]: Initializing Sifa... [2019-09-06 08:59:50,104 INFO L275 PluginConnector]: Sifa initialized [2019-09-06 08:59:50,105 INFO L185 PluginConnector]: Executing the observer SifaObserver from plugin Sifa for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.09 08:59:50" (1/1) ... [2019-09-06 08:59:50,106 INFO L79 SifaObserver]: Intern domains=ExplicitValueDomain;IntervalDomain ♦ Abstract Domain=IntervalDomain ♦ Abstract when formula's dag size exceeds (negative numbers disable this limit)=-1 ♦ Fluid=SizeLimitFluid ♦ Max. Parallel Explicit Values=2 ♦ Max. Parallel Intervals=2 ♦ Loop Summarizer=FixpointLoopSummarizer ♦ Abstract when formula has more disjuncts than (negative numbers disable this limit)=8 ♦ Call Summarizer=ReUseSupersetCallSummarizer ♦ Xnf Conversion Technique=BOTTOM_UP_WITH_LOCAL_SIMPLIFICATION ♦ Simplification Technique=NONE ♦ Intern Fluid=SizeLimitFluid [2019-09-06 08:59:50,130 INFO L162 IcfgInterpreter]: Started Sifa with 14 locations of interest [2019-09-06 08:59:50,131 INFO L169 IcfgInterpreter]: Building call graph [2019-09-06 08:59:50,140 INFO L174 IcfgInterpreter]: Initial procedures are [ULTIMATE.start] [2019-09-06 08:59:50,155 INFO L179 IcfgInterpreter]: Starting interpretation [2019-09-06 08:59:50,156 INFO L199 IcfgInterpreter]: Interpreting procedure ULTIMATE.start with input of size 1 for LOIs [2019-09-06 08:59:50,242 INFO L199 IcfgInterpreter]: Interpreting procedure main with input of size 23 for LOIs [2019-09-06 08:59:53,472 WARN L188 SmtUtils]: Spent 123.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 08:59:55,946 WARN L188 SmtUtils]: Spent 120.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:42,832 WARN L188 SmtUtils]: Spent 114.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:43,475 WARN L188 SmtUtils]: Spent 116.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:43,957 WARN L188 SmtUtils]: Spent 100.00 ms on a formula simplification that was a NOOP. DAG size: 37 [2019-09-06 09:00:44,090 WARN L188 SmtUtils]: Spent 107.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:44,584 WARN L188 SmtUtils]: Spent 105.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:50,900 WARN L188 SmtUtils]: Spent 108.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:51,391 WARN L188 SmtUtils]: Spent 106.00 ms on a formula simplification. DAG size of input: 40 DAG size of output: 33 [2019-09-06 09:00:59,219 INFO L183 IcfgInterpreter]: Interpretation finished [2019-09-06 09:00:59,220 INFO L191 IcfgInterpreter]: Final predicates for locations of interest are: [2019-09-06 09:00:59,222 INFO L193 IcfgInterpreter]: Reachable states at location mainErr4ASSERT_VIOLATIONERROR_FUNCTION satisfy 7761#(and (<= main_~status~0 1) (<= 1 main_~status~0)) [2019-09-06 09:00:59,223 INFO L193 IcfgInterpreter]: Reachable states at location mainErr2ASSERT_VIOLATIONERROR_FUNCTION satisfy 4923#(and (<= 0 main_~head~0.base) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)) [2019-09-06 09:00:59,224 INFO L193 IcfgInterpreter]: Reachable states at location mainErr8ASSERT_VIOLATIONERROR_FUNCTION satisfy 7726#(and (<= 0 main_~head~0.base) (<= 3 main_~status~0) (<= main_~status~0 3) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)) [2019-09-06 09:00:59,224 INFO L193 IcfgInterpreter]: Reachable states at location mainErr3ASSERT_VIOLATIONERROR_FUNCTION satisfy 7803#(and (<= 0 main_~head~0.base) (<= main_~status~0 1) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 1 main_~status~0) (<= 0 main_~head~0.offset)) [2019-09-06 09:00:59,224 INFO L193 IcfgInterpreter]: Reachable states at location mainErr7ASSERT_VIOLATIONERROR_FUNCTION satisfy 7424#(and (<= 2 main_~status~0) (<= main_~status~0 2)) [2019-09-06 09:00:59,224 INFO L193 IcfgInterpreter]: Reachable states at location mainErr0ASSERT_VIOLATIONERROR_FUNCTION satisfy 4911#(or (and (<= 0 main_~head~0.base) (<= main_~status~0 1) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 1 main_~status~0) (<= 0 main_~head~0.offset)) (and (<= 0 main_~head~0.base) (<= main_~status~0 3) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset))) [2019-09-06 09:00:59,225 INFO L193 IcfgInterpreter]: Reachable states at location mainErr12ASSERT_VIOLATIONERROR_FUNCTION satisfy 6200#(and (<= 3 main_~status~0) (<= main_~status~0 3)) [2019-09-06 09:00:59,225 INFO L193 IcfgInterpreter]: Reachable states at location mainErr11ASSERT_VIOLATIONERROR_FUNCTION satisfy 7201#(and (<= 3 main_~status~0) (<= main_~status~0 3)) [2019-09-06 09:00:59,226 INFO L193 IcfgInterpreter]: Reachable states at location mainErr10ASSERT_VIOLATIONERROR_FUNCTION satisfy 7385#(and (<= 3 main_~status~0) (<= main_~status~0 3)) [2019-09-06 09:00:59,226 INFO L193 IcfgInterpreter]: Reachable states at location mainErr9ASSERT_VIOLATIONERROR_FUNCTION satisfy 7670#(and (<= 3 main_~status~0) (<= main_~status~0 3)) [2019-09-06 09:00:59,226 INFO L193 IcfgInterpreter]: Reachable states at location mainErr1ASSERT_VIOLATIONERROR_FUNCTION satisfy 4883#(and (<= 0 main_~item~0.base) (<= main_~item~0.base 0) (<= 0 main_~item~0.offset) (<= main_~item~0.offset 0)) [2019-09-06 09:00:59,227 INFO L193 IcfgInterpreter]: Reachable states at location mainErr6ASSERT_VIOLATIONERROR_FUNCTION satisfy 7702#(and (<= 2 main_~status~0) (<= main_~status~0 2)) [2019-09-06 09:00:59,227 INFO L193 IcfgInterpreter]: Reachable states at location mainErr5ASSERT_VIOLATIONERROR_FUNCTION satisfy 7783#(and (<= 0 main_~head~0.base) (<= 2 main_~status~0) (<= main_~status~0 2) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)) [2019-09-06 09:00:59,227 INFO L193 IcfgInterpreter]: Reachable states at location mainErr13ASSERT_VIOLATIONERROR_FUNCTION satisfy 6571#true [2019-09-06 09:00:59,249 INFO L104 SifaObserver]: ✘ Some error locations might be reachable, see reported results. [2019-09-06 09:00:59,249 INFO L132 PluginConnector]: ------------------------ END Sifa---------------------------- [2019-09-06 09:00:59,251 INFO L168 Benchmark]: Toolchain (without parser) took 70574.50 ms. Allocated memory was 134.2 MB in the beginning and 887.6 MB in the end (delta: 753.4 MB). Free memory was 89.2 MB in the beginning and 571.9 MB in the end (delta: -482.6 MB). Peak memory consumption was 270.8 MB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,251 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,251 INFO L168 Benchmark]: CACSL2BoogieTranslator took 590.87 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 165.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,251 INFO L168 Benchmark]: Boogie Preprocessor took 76.01 ms. Allocated memory is still 201.3 MB. Free memory was 165.0 MB in the beginning and 161.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,252 INFO L168 Benchmark]: RCFGBuilder took 758.02 ms. Allocated memory is still 201.3 MB. Free memory was 161.7 MB in the beginning and 107.6 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,252 INFO L168 Benchmark]: Sifa took 69145.87 ms. Allocated memory was 201.3 MB in the beginning and 887.6 MB in the end (delta: 686.3 MB). Free memory was 107.6 MB in the beginning and 571.9 MB in the end (delta: -464.3 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. [2019-09-06 09:00:59,253 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 134.2 MB. Free memory was 108.6 MB in the beginning and 108.4 MB in the end (delta: 212.8 kB). Peak memory consumption was 212.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 590.87 ms. Allocated memory was 134.2 MB in the beginning and 201.3 MB in the end (delta: 67.1 MB). Free memory was 89.0 MB in the beginning and 165.0 MB in the end (delta: -76.0 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.01 ms. Allocated memory is still 201.3 MB. Free memory was 165.0 MB in the beginning and 161.7 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 758.02 ms. Allocated memory is still 201.3 MB. Free memory was 161.7 MB in the beginning and 107.6 MB in the end (delta: 54.2 MB). Peak memory consumption was 54.2 MB. Max. memory is 7.1 GB. * Sifa took 69145.87 ms. Allocated memory was 201.3 MB in the beginning and 887.6 MB in the end (delta: 686.3 MB). Free memory was 107.6 MB in the beginning and 571.9 MB in the end (delta: -464.3 MB). Peak memory consumption was 222.0 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.sifa: - StatisticsResult: Symbolic Interpretation with Fluid Abstractions OVERALL_TIME[ms]: 69097, ICFG_INTERPRETER_ENTERED_PROCEDURES: 2, DAG_INTERPRETER_EARLY_EXIT_QUERIES: 7322, DAG_INTERPRETER_EARLY_EXITS: 763, TOOLS_POST_APPLICATIONS: 5619, TOOLS_POST_TIME[ms]: 65967, TOOLS_POST_CALL_APPLICATIONS: 2, TOOLS_POST_CALL_TIME[ms]: 21, TOOLS_POST_RETURN_APPLICATIONS: 1, TOOLS_POST_RETURN_TIME[ms]: 1, TOOLS_QUANTIFIERELIM_TIME[ms]: 65660, FLUID_QUERY_TIME[ms]: 51, FLUID_QUERIES: 8233, FLUID_YES_ANSWERS: 183, DOMAIN_JOIN_APPLICATIONS: 1990, DOMAIN_JOIN_TIME[ms]: 219, DOMAIN_ALPHA_APPLICATIONS: 183, DOMAIN_ALPHA_TIME[ms]: 10, DOMAIN_WIDEN_APPLICATIONS: 6, DOMAIN_WIDEN_TIME[ms]: 1, DOMAIN_ISSUBSETEQ_APPLICATIONS: 911, DOMAIN_ISSUBSETEQ_TIME[ms]: 25, DOMAIN_ISBOTTOM_APPLICATIONS: 2141, DOMAIN_ISBOTTOM_TIME[ms]: 1587, LOOP_SUMMARIZER_APPLICATIONS: 1057, LOOP_SUMMARIZER_CACHE_MISSES: 905, LOOP_SUMMARIZER_OVERALL_TIME[ms]: 49562, LOOP_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 49551, LOOP_SUMMARIZER_FIXPOINT_ITERATIONS: 911, CALL_SUMMARIZER_APPLICATIONS: 1, CALL_SUMMARIZER_CACHE_MISSES: 0, CALL_SUMMARIZER_OVERALL_TIME[ms]: 32, CALL_SUMMARIZER_NEW_COMPUTATION_TIME[ms]: 0, PROCEDURE_GRAPH_BUILDER_TIME[ms]: 6, PATH_EXPR_TIME[ms]: 11, REGEX_TO_DAG_TIME[ms]: 18, DAG_COMPRESSION_TIME[ms]: 754, DAG_COMPRESSION_PROCESSED_NODES: 37138, DAG_COMPRESSION_RETAINED_NODES: 17066 - UnprovableResult [Line: 1024]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7761#(and (<= main_~status~0 1) (<= 1 main_~status~0)). Possible FailurePath: - UnprovableResult [Line: 1020]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 4923#(and (<= 0 main_~head~0.base) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)). Possible FailurePath: - UnprovableResult [Line: 1034]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7726#(and (<= 0 main_~head~0.base) (<= 3 main_~status~0) (<= main_~status~0 3) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)). Possible FailurePath: - UnprovableResult [Line: 1023]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7803#(and (<= 0 main_~head~0.base) (<= main_~status~0 1) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 1 main_~status~0) (<= 0 main_~head~0.offset)). Possible FailurePath: - UnprovableResult [Line: 1030]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7424#(and (<= 2 main_~status~0) (<= main_~status~0 2)). Possible FailurePath: - UnprovableResult [Line: 1016]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 4911#(or (and (<= 0 main_~head~0.base) (<= main_~status~0 1) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 1 main_~status~0) (<= 0 main_~head~0.offset)) (and (<= 0 main_~head~0.base) (<= main_~status~0 3) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset))). Possible FailurePath: - UnprovableResult [Line: 1038]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 6200#(and (<= 3 main_~status~0) (<= main_~status~0 3)). Possible FailurePath: - UnprovableResult [Line: 1037]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7201#(and (<= 3 main_~status~0) (<= main_~status~0 3)). Possible FailurePath: - UnprovableResult [Line: 1036]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7385#(and (<= 3 main_~status~0) (<= main_~status~0 3)). Possible FailurePath: - UnprovableResult [Line: 1035]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7670#(and (<= 3 main_~status~0) (<= main_~status~0 3)). Possible FailurePath: - UnprovableResult [Line: 1017]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 4883#(and (<= 0 main_~item~0.base) (<= main_~item~0.base 0) (<= 0 main_~item~0.offset) (<= main_~item~0.offset 0)). Possible FailurePath: - UnprovableResult [Line: 1029]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7702#(and (<= 2 main_~status~0) (<= main_~status~0 2)). Possible FailurePath: - UnprovableResult [Line: 1028]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 7783#(and (<= 0 main_~head~0.base) (<= 2 main_~status~0) (<= main_~status~0 2) (<= main_~head~0.offset 0) (<= main_~head~0.base 0) (<= 0 main_~head~0.offset)). Possible FailurePath: - UnprovableResult [Line: 1044]: Unable to prove that call of __VERIFIER_error() unreachable Unable to prove that call of __VERIFIER_error() unreachable Reason: Over-approximation of reachable states at this location is 6571#true. Possible FailurePath: RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces Received shutdown request...