/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-7d8eed3 [2020-11-06 22:30:51,271 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-11-06 22:30:51,274 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-11-06 22:30:51,308 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-11-06 22:30:51,309 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-11-06 22:30:51,310 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-11-06 22:30:51,312 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-11-06 22:30:51,317 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-11-06 22:30:51,319 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-11-06 22:30:51,322 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-11-06 22:30:51,324 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-11-06 22:30:51,326 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-11-06 22:30:51,327 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-11-06 22:30:51,332 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-11-06 22:30:51,333 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-11-06 22:30:51,335 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-11-06 22:30:51,336 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-11-06 22:30:51,338 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-11-06 22:30:51,345 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-11-06 22:30:51,348 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-11-06 22:30:51,352 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-11-06 22:30:51,353 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-11-06 22:30:51,355 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-11-06 22:30:51,357 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-11-06 22:30:51,364 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-11-06 22:30:51,365 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-11-06 22:30:51,366 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-11-06 22:30:51,368 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-11-06 22:30:51,368 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-11-06 22:30:51,369 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-11-06 22:30:51,370 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-11-06 22:30:51,373 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-11-06 22:30:51,375 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-11-06 22:30:51,376 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-11-06 22:30:51,377 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-11-06 22:30:51,378 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-11-06 22:30:51,387 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-11-06 22:30:51,387 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-11-06 22:30:51,387 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-11-06 22:30:51,388 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-11-06 22:30:51,389 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-11-06 22:30:51,390 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 [2020-11-06 22:30:51,442 INFO L113 SettingsManager]: Loading preferences was successful [2020-11-06 22:30:51,442 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-11-06 22:30:51,446 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-11-06 22:30:51,447 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-11-06 22:30:51,447 INFO L138 SettingsManager]: * Use SBE=true [2020-11-06 22:30:51,447 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-11-06 22:30:51,447 INFO L138 SettingsManager]: * sizeof long=4 [2020-11-06 22:30:51,447 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-11-06 22:30:51,448 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-11-06 22:30:51,448 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-11-06 22:30:51,448 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-11-06 22:30:51,448 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-11-06 22:30:51,448 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-11-06 22:30:51,449 INFO L138 SettingsManager]: * sizeof long double=12 [2020-11-06 22:30:51,449 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-11-06 22:30:51,449 INFO L138 SettingsManager]: * Use constant arrays=true [2020-11-06 22:30:51,449 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-11-06 22:30:51,450 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-11-06 22:30:51,450 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-11-06 22:30:51,450 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-11-06 22:30:51,450 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-11-06 22:30:51,450 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-11-06 22:30:51,450 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-11-06 22:30:51,451 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-11-06 22:30:51,451 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-11-06 22:30:51,451 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-11-06 22:30:51,451 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-11-06 22:30:51,451 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-11-06 22:30:51,452 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-11-06 22:30:51,452 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-11-06 22:30:51,795 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-11-06 22:30:51,840 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-11-06 22:30:51,844 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-11-06 22:30:51,845 INFO L271 PluginConnector]: Initializing CDTParser... [2020-11-06 22:30:51,846 INFO L275 PluginConnector]: CDTParser initialized [2020-11-06 22:30:51,847 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-06 22:30:51,916 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c97a2f5/4de9d91fcc0f4fe5a337f6179de43db3/FLAGf86c4b1b1 [2020-11-06 22:30:52,512 INFO L306 CDTParser]: Found 1 translation units. [2020-11-06 22:30:52,513 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-circular-2.i [2020-11-06 22:30:52,533 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c97a2f5/4de9d91fcc0f4fe5a337f6179de43db3/FLAGf86c4b1b1 [2020-11-06 22:30:52,805 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/d5c97a2f5/4de9d91fcc0f4fe5a337f6179de43db3 [2020-11-06 22:30:52,808 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-11-06 22:30:52,815 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-11-06 22:30:52,817 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-11-06 22:30:52,817 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-11-06 22:30:52,823 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-11-06 22:30:52,824 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:52" (1/1) ... [2020-11-06 22:30:52,828 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5a580dc9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:52, skipping insertion in model container [2020-11-06 22:30:52,829 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 06.11 10:30:52" (1/1) ... [2020-11-06 22:30:52,837 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-11-06 22:30:52,906 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-11-06 22:30:53,282 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:30:53,300 INFO L203 MainTranslator]: Completed pre-run [2020-11-06 22:30:53,378 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-11-06 22:30:53,455 INFO L208 MainTranslator]: Completed translation [2020-11-06 22:30:53,456 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53 WrapperNode [2020-11-06 22:30:53,457 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-11-06 22:30:53,458 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-11-06 22:30:53,458 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-11-06 22:30:53,459 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-11-06 22:30:53,473 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,475 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,514 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,515 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,558 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,566 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,576 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (1/1) ... [2020-11-06 22:30:53,588 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-11-06 22:30:53,589 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-11-06 22:30:53,589 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-11-06 22:30:53,589 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-11-06 22:30:53,590 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (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 [2020-11-06 22:30:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-11-06 22:30:53,677 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-11-06 22:30:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-11-06 22:30:53,678 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-11-06 22:30:53,678 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-11-06 22:30:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-11-06 22:30:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-11-06 22:30:53,679 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-11-06 22:30:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-11-06 22:30:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-11-06 22:30:53,680 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-11-06 22:30:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-11-06 22:30:53,681 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-11-06 22:30:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-11-06 22:30:53,682 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-11-06 22:30:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-11-06 22:30:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-11-06 22:30:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-11-06 22:30:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-11-06 22:30:53,683 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-11-06 22:30:53,684 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-11-06 22:30:53,685 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-11-06 22:30:53,686 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-11-06 22:30:53,687 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-11-06 22:30:53,688 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-11-06 22:30:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-11-06 22:30:53,689 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-11-06 22:30:53,690 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-11-06 22:30:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-11-06 22:30:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-11-06 22:30:53,691 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-11-06 22:30:53,692 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-11-06 22:30:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-11-06 22:30:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-11-06 22:30:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-11-06 22:30:53,693 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-11-06 22:30:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-11-06 22:30:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-11-06 22:30:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-11-06 22:30:53,694 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-11-06 22:30:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-11-06 22:30:53,695 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-11-06 22:30:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-11-06 22:30:53,696 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-11-06 22:30:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-11-06 22:30:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-11-06 22:30:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-11-06 22:30:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-11-06 22:30:53,697 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-11-06 22:30:53,698 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-11-06 22:30:53,699 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-11-06 22:30:53,700 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-11-06 22:30:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-11-06 22:30:53,701 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-11-06 22:30:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-11-06 22:30:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-11-06 22:30:53,702 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-11-06 22:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-11-06 22:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-11-06 22:30:53,703 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-11-06 22:30:54,290 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-11-06 22:30:54,290 INFO L298 CfgBuilder]: Removed 9 assume(true) statements. [2020-11-06 22:30:54,292 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:54 BoogieIcfgContainer [2020-11-06 22:30:54,292 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-11-06 22:30:54,294 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-11-06 22:30:54,294 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-11-06 22:30:54,297 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-11-06 22:30:54,297 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 06.11 10:30:52" (1/3) ... [2020-11-06 22:30:54,298 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ceddabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:54, skipping insertion in model container [2020-11-06 22:30:54,298 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 06.11 10:30:53" (2/3) ... [2020-11-06 22:30:54,299 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5ceddabf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 06.11 10:30:54, skipping insertion in model container [2020-11-06 22:30:54,299 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 06.11 10:30:54" (3/3) ... [2020-11-06 22:30:54,301 INFO L111 eAbstractionObserver]: Analyzing ICFG sll-circular-2.i [2020-11-06 22:30:54,315 INFO L179 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-11-06 22:30:54,319 INFO L191 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-11-06 22:30:54,332 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-11-06 22:30:54,357 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-11-06 22:30:54,357 INFO L378 AbstractCegarLoop]: Hoare is true [2020-11-06 22:30:54,357 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-11-06 22:30:54,357 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-11-06 22:30:54,358 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-11-06 22:30:54,358 INFO L382 AbstractCegarLoop]: Difference is false [2020-11-06 22:30:54,358 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-11-06 22:30:54,358 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-11-06 22:30:54,375 INFO L276 IsEmpty]: Start isEmpty. Operand 43 states. [2020-11-06 22:30:54,394 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-11-06 22:30:54,394 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:30:54,395 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:30:54,395 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:30:54,409 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:30:54,409 INFO L82 PathProgramCache]: Analyzing trace with hash -323057978, now seen corresponding path program 1 times [2020-11-06 22:30:54,421 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:30:54,425 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1815193339] [2020-11-06 22:30:54,426 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:30:54,553 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:54,640 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:30:54,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:54,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:30:54,659 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1815193339] [2020-11-06 22:30:54,659 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:30:54,660 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-11-06 22:30:54,661 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008873494] [2020-11-06 22:30:54,665 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-11-06 22:30:54,666 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:30:54,680 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-11-06 22:30:54,681 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:30:54,683 INFO L87 Difference]: Start difference. First operand 43 states. Second operand 3 states. [2020-11-06 22:30:54,815 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:30:54,815 INFO L93 Difference]: Finished difference Result 75 states and 118 transitions. [2020-11-06 22:30:54,816 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-11-06 22:30:54,817 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 12 [2020-11-06 22:30:54,817 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:30:54,826 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:30:54,826 INFO L226 Difference]: Without dead ends: 30 [2020-11-06 22:30:54,830 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-11-06 22:30:54,849 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 30 states. [2020-11-06 22:30:54,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 30 to 30. [2020-11-06 22:30:54,871 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 30 states. [2020-11-06 22:30:54,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 30 states to 30 states and 37 transitions. [2020-11-06 22:30:54,874 INFO L78 Accepts]: Start accepts. Automaton has 30 states and 37 transitions. Word has length 12 [2020-11-06 22:30:54,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:30:54,875 INFO L481 AbstractCegarLoop]: Abstraction has 30 states and 37 transitions. [2020-11-06 22:30:54,875 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-11-06 22:30:54,875 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states and 37 transitions. [2020-11-06 22:30:54,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-11-06 22:30:54,876 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:30:54,876 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:30:54,876 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-11-06 22:30:54,877 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:30:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:30:54,878 INFO L82 PathProgramCache]: Analyzing trace with hash -2142796056, now seen corresponding path program 1 times [2020-11-06 22:30:54,878 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:30:54,878 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1195385046] [2020-11-06 22:30:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:30:54,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,046 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:30:55,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,060 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:30:55,060 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1195385046] [2020-11-06 22:30:55,060 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:30:55,061 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-11-06 22:30:55,061 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1127004813] [2020-11-06 22:30:55,062 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-11-06 22:30:55,063 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:30:55,063 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-11-06 22:30:55,063 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-11-06 22:30:55,064 INFO L87 Difference]: Start difference. First operand 30 states and 37 transitions. Second operand 5 states. [2020-11-06 22:30:55,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:30:55,214 INFO L93 Difference]: Finished difference Result 47 states and 57 transitions. [2020-11-06 22:30:55,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-11-06 22:30:55,215 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 13 [2020-11-06 22:30:55,215 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:30:55,216 INFO L225 Difference]: With dead ends: 47 [2020-11-06 22:30:55,216 INFO L226 Difference]: Without dead ends: 42 [2020-11-06 22:30:55,217 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-11-06 22:30:55,218 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2020-11-06 22:30:55,224 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 33. [2020-11-06 22:30:55,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 33 states. [2020-11-06 22:30:55,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 40 transitions. [2020-11-06 22:30:55,226 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 40 transitions. Word has length 13 [2020-11-06 22:30:55,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:30:55,226 INFO L481 AbstractCegarLoop]: Abstraction has 33 states and 40 transitions. [2020-11-06 22:30:55,226 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-11-06 22:30:55,226 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 40 transitions. [2020-11-06 22:30:55,227 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-11-06 22:30:55,227 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:30:55,227 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:30:55,228 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-11-06 22:30:55,228 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:30:55,228 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:30:55,228 INFO L82 PathProgramCache]: Analyzing trace with hash -1634639351, now seen corresponding path program 1 times [2020-11-06 22:30:55,229 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:30:55,229 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1273087767] [2020-11-06 22:30:55,229 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:30:55,250 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,301 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:30:55,304 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,311 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:30:55,311 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1273087767] [2020-11-06 22:30:55,312 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:30:55,312 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-11-06 22:30:55,312 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [657590553] [2020-11-06 22:30:55,313 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-11-06 22:30:55,313 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:30:55,313 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-11-06 22:30:55,314 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:30:55,314 INFO L87 Difference]: Start difference. First operand 33 states and 40 transitions. Second operand 4 states. [2020-11-06 22:30:55,440 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:30:55,440 INFO L93 Difference]: Finished difference Result 75 states and 94 transitions. [2020-11-06 22:30:55,441 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-11-06 22:30:55,441 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 16 [2020-11-06 22:30:55,442 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:30:55,443 INFO L225 Difference]: With dead ends: 75 [2020-11-06 22:30:55,443 INFO L226 Difference]: Without dead ends: 52 [2020-11-06 22:30:55,445 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-11-06 22:30:55,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 52 states. [2020-11-06 22:30:55,455 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 52 to 40. [2020-11-06 22:30:55,456 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-11-06 22:30:55,457 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 49 transitions. [2020-11-06 22:30:55,457 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 49 transitions. Word has length 16 [2020-11-06 22:30:55,458 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:30:55,458 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 49 transitions. [2020-11-06 22:30:55,458 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-11-06 22:30:55,458 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 49 transitions. [2020-11-06 22:30:55,459 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:30:55,459 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:30:55,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:30:55,460 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-11-06 22:30:55,460 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:30:55,460 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:30:55,461 INFO L82 PathProgramCache]: Analyzing trace with hash -94271402, now seen corresponding path program 1 times [2020-11-06 22:30:55,461 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:30:55,461 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1313070391] [2020-11-06 22:30:55,461 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:30:55,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,811 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-11-06 22:30:55,814 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-11-06 22:30:55,821 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-11-06 22:30:55,821 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1313070391] [2020-11-06 22:30:55,822 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-11-06 22:30:55,822 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-11-06 22:30:55,822 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [508528448] [2020-11-06 22:30:55,822 INFO L461 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-11-06 22:30:55,823 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-11-06 22:30:55,823 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-11-06 22:30:55,824 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2020-11-06 22:30:55,824 INFO L87 Difference]: Start difference. First operand 40 states and 49 transitions. Second operand 8 states. [2020-11-06 22:30:56,191 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-11-06 22:30:56,191 INFO L93 Difference]: Finished difference Result 62 states and 74 transitions. [2020-11-06 22:30:56,192 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-11-06 22:30:56,192 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 19 [2020-11-06 22:30:56,192 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-11-06 22:30:56,193 INFO L225 Difference]: With dead ends: 62 [2020-11-06 22:30:56,193 INFO L226 Difference]: Without dead ends: 51 [2020-11-06 22:30:56,194 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=48, Invalid=108, Unknown=0, NotChecked=0, Total=156 [2020-11-06 22:30:56,195 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-11-06 22:30:56,201 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2020-11-06 22:30:56,201 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 48 states. [2020-11-06 22:30:56,202 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 58 transitions. [2020-11-06 22:30:56,203 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 58 transitions. Word has length 19 [2020-11-06 22:30:56,203 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-11-06 22:30:56,203 INFO L481 AbstractCegarLoop]: Abstraction has 48 states and 58 transitions. [2020-11-06 22:30:56,203 INFO L482 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-11-06 22:30:56,203 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 58 transitions. [2020-11-06 22:30:56,204 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-11-06 22:30:56,204 INFO L414 BasicCegarLoop]: Found error trace [2020-11-06 22:30:56,204 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-11-06 22:30:56,205 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-11-06 22:30:56,205 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-11-06 22:30:56,205 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-11-06 22:30:56,205 INFO L82 PathProgramCache]: Analyzing trace with hash -96118444, now seen corresponding path program 1 times [2020-11-06 22:30:56,205 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-11-06 22:30:56,206 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [124863633] [2020-11-06 22:30:56,206 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-11-06 22:30:56,229 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:30:56,229 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:30:56,262 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-11-06 22:30:56,262 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-11-06 22:30:56,300 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-11-06 22:30:56,301 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-11-06 22:30:56,301 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-11-06 22:30:56,346 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 06.11 10:30:56 BoogieIcfgContainer [2020-11-06 22:30:56,346 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-11-06 22:30:56,349 INFO L168 Benchmark]: Toolchain (without parser) took 3538.03 ms. Allocated memory is still 157.3 MB. Free memory was 132.0 MB in the beginning and 56.9 MB in the end (delta: 75.1 MB). Peak memory consumption was 76.4 MB. Max. memory is 8.0 GB. [2020-11-06 22:30:56,350 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. [2020-11-06 22:30:56,354 INFO L168 Benchmark]: CACSL2BoogieTranslator took 640.91 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 109.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-11-06 22:30:56,356 INFO L168 Benchmark]: Boogie Preprocessor took 130.03 ms. Allocated memory is still 157.3 MB. Free memory was 109.4 MB in the beginning and 140.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. [2020-11-06 22:30:56,356 INFO L168 Benchmark]: RCFGBuilder took 703.13 ms. Allocated memory is still 157.3 MB. Free memory was 140.2 MB in the beginning and 98.3 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. [2020-11-06 22:30:56,357 INFO L168 Benchmark]: TraceAbstraction took 2052.83 ms. Allocated memory is still 157.3 MB. Free memory was 98.2 MB in the beginning and 56.9 MB in the end (delta: 41.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 8.0 GB. [2020-11-06 22:30:56,361 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 125.8 MB. Free memory was 100.9 MB in the beginning and 100.8 MB in the end (delta: 69.7 kB). There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 640.91 ms. Allocated memory is still 157.3 MB. Free memory was 131.4 MB in the beginning and 109.6 MB in the end (delta: 21.9 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 130.03 ms. Allocated memory is still 157.3 MB. Free memory was 109.4 MB in the beginning and 140.2 MB in the end (delta: -30.7 MB). Peak memory consumption was 5.2 MB. Max. memory is 8.0 GB. * RCFGBuilder took 703.13 ms. Allocated memory is still 157.3 MB. Free memory was 140.2 MB in the beginning and 98.3 MB in the end (delta: 41.8 MB). Peak memory consumption was 41.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2052.83 ms. Allocated memory is still 157.3 MB. Free memory was 98.2 MB in the beginning and 56.9 MB in the end (delta: 41.3 MB). Peak memory consumption was 41.8 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 985]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L996] SLL* head = malloc(sizeof(SLL)); [L997] head->next = head [L998] head->data = 0 [L1000] SLL* x = head; [L1001] int state = 1; VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1004] COND FALSE !(__VERIFIER_nondet_int()) [L1025] x->data = state [L1027] EXPR head->next [L1027] x = head->next [L1028] COND FALSE !(!(((void*)0) != x)) VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}] [L1030] EXPR x->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1] [L1030] COND TRUE x->data != 0 [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data [L1032] EXPR x->data [L1032] EXPR x->next [L1032] EXPR x->next->data [L1032] EXPR x->next->data != 0 && x->data > x->next->data VAL [head={-1:0}, malloc(sizeof(SLL))={-1:0}, state=1, x={-1:0}, x->data=1, x->next={-1:0}, x->next={-1:0}, x->next->data=1, x->next->data=1, x->next->data != 0 && x->data > x->next->data=0] [L1032] COND TRUE !(x->next->data != 0 && x->data > x->next->data) [L1032] CALL reach_error() [L985] COND FALSE !(0) [L985] __assert_fail ("0", "sll-circular-2.c", 14, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 4 procedures, 43 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.9s, OverallIterations: 5, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 123 SDtfs, 68 SDslu, 137 SDs, 0 SdLazy, 237 SolverSat, 31 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 30 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.5s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=48occurred in iteration=4, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 4 MinimizatonAttempts, 24 StatesRemovedByMinimization, 3 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.6s InterpolantComputationTime, 79 NumberOfCodeBlocks, 79 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 56 ConstructedInterpolants, 0 QuantifiedInterpolants, 6202 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...