/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:28,551 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:28,553 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:28,572 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:28,572 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:28,575 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:28,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:28,588 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:28,591 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:28,594 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:28,596 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:28,599 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:28,599 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:28,600 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:28,603 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:28,604 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:28,606 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:28,607 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:28,608 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:28,613 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:28,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:28,622 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:28,623 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:28,623 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:28,625 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:28,626 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:28,626 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:28,628 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:28,629 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:28,630 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:28,630 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:28,631 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:28,632 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:28,633 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:28,634 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:28,634 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:28,635 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:28,635 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:28,635 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:28,636 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:28,637 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:28,638 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:28,663 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:28,663 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:28,668 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:28,668 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:28,668 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:28,668 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:28,669 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:28,669 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:28,669 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:28,669 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:28,672 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:28,672 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:28,672 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:28,672 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:28,673 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:28,673 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:28,673 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:28,673 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:28,673 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:28,674 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:28,674 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:28,674 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:28,674 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:29,005 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:29,019 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:29,023 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:29,025 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:29,025 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:29,026 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-07 13:25:29,101 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c72f25b/c1d3e9fb352042ebaf52db26d2d0b747/FLAG6d6df8035 [2020-07-07 13:25:29,641 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:29,642 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-cnstr_1-2.i [2020-07-07 13:25:29,655 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c72f25b/c1d3e9fb352042ebaf52db26d2d0b747/FLAG6d6df8035 [2020-07-07 13:25:30,029 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/77c72f25b/c1d3e9fb352042ebaf52db26d2d0b747 [2020-07-07 13:25:30,038 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:30,040 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:30,042 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:30,042 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:30,045 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:30,046 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,050 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2ce17be7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30, skipping insertion in model container [2020-07-07 13:25:30,050 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,058 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:30,115 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:30,559 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:30,568 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:30,615 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:30,666 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:30,667 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30 WrapperNode [2020-07-07 13:25:30,667 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:30,668 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:30,668 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:30,668 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:30,681 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,681 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,697 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,697 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,712 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (1/1) ... [2020-07-07 13:25:30,728 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:30,728 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:30,728 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:30,728 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:30,729 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (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 [2020-07-07 13:25:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:30,790 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:30,791 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:30,792 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:30,793 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:30,794 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:30,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:30,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:30,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:30,798 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:30,799 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:30,800 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:30,801 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:30,802 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:30,803 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:30,804 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:30,805 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:30,806 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:30,807 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:30,808 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:31,354 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:31,354 INFO L295 CfgBuilder]: Removed 9 assume(true) statements. [2020-07-07 13:25:31,359 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:31 BoogieIcfgContainer [2020-07-07 13:25:31,359 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:31,361 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:31,361 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:31,364 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:31,365 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:30" (1/3) ... [2020-07-07 13:25:31,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a57f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:31, skipping insertion in model container [2020-07-07 13:25:31,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:30" (2/3) ... [2020-07-07 13:25:31,366 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66a57f6d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:31, skipping insertion in model container [2020-07-07 13:25:31,366 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:31" (3/3) ... [2020-07-07 13:25:31,368 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-cnstr_1-2.i [2020-07-07 13:25:31,379 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:31,388 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 3 error locations. [2020-07-07 13:25:31,403 INFO L251 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2020-07-07 13:25:31,427 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:31,428 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:31,428 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:31,428 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:31,428 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:31,429 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:31,429 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:31,429 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:31,446 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states. [2020-07-07 13:25:31,457 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2020-07-07 13:25:31,457 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:31,459 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:31,459 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:31,466 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:31,466 INFO L82 PathProgramCache]: Analyzing trace with hash -1234818853, now seen corresponding path program 1 times [2020-07-07 13:25:31,476 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:31,477 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1252421678] [2020-07-07 13:25:31,477 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:31,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,718 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:31,742 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:31,743 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:31,745 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1252421678] [2020-07-07 13:25:31,748 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:31,748 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:31,750 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1292607054] [2020-07-07 13:25:31,756 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:31,756 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:31,770 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:31,771 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:31,773 INFO L87 Difference]: Start difference. First operand 92 states. Second operand 3 states. [2020-07-07 13:25:32,036 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:32,037 INFO L93 Difference]: Finished difference Result 149 states and 180 transitions. [2020-07-07 13:25:32,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:32,039 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 17 [2020-07-07 13:25:32,039 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:32,050 INFO L225 Difference]: With dead ends: 149 [2020-07-07 13:25:32,050 INFO L226 Difference]: Without dead ends: 69 [2020-07-07 13:25:32,054 INFO L675 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 [2020-07-07 13:25:32,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 69 states. [2020-07-07 13:25:32,098 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 69 to 69. [2020-07-07 13:25:32,100 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-07-07 13:25:32,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 72 transitions. [2020-07-07 13:25:32,104 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 72 transitions. Word has length 17 [2020-07-07 13:25:32,104 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:32,104 INFO L479 AbstractCegarLoop]: Abstraction has 69 states and 72 transitions. [2020-07-07 13:25:32,104 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:32,105 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 72 transitions. [2020-07-07 13:25:32,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2020-07-07 13:25:32,106 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:32,106 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:32,106 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:32,107 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:32,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:32,107 INFO L82 PathProgramCache]: Analyzing trace with hash -1418693445, now seen corresponding path program 1 times [2020-07-07 13:25:32,107 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:32,108 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [213466224] [2020-07-07 13:25:32,108 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:32,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,240 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:32,241 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,241 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [213466224] [2020-07-07 13:25:32,241 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:32,242 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:32,242 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1635346486] [2020-07-07 13:25:32,243 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:32,243 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:32,243 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:32,244 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:32,244 INFO L87 Difference]: Start difference. First operand 69 states and 72 transitions. Second operand 6 states. [2020-07-07 13:25:32,465 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:32,465 INFO L93 Difference]: Finished difference Result 94 states and 99 transitions. [2020-07-07 13:25:32,465 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:25:32,466 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 19 [2020-07-07 13:25:32,466 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:32,467 INFO L225 Difference]: With dead ends: 94 [2020-07-07 13:25:32,468 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 13:25:32,469 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:32,470 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 13:25:32,484 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 67. [2020-07-07 13:25:32,485 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 67 states. [2020-07-07 13:25:32,486 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 67 states to 67 states and 70 transitions. [2020-07-07 13:25:32,486 INFO L78 Accepts]: Start accepts. Automaton has 67 states and 70 transitions. Word has length 19 [2020-07-07 13:25:32,487 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:32,487 INFO L479 AbstractCegarLoop]: Abstraction has 67 states and 70 transitions. [2020-07-07 13:25:32,487 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:32,487 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states and 70 transitions. [2020-07-07 13:25:32,488 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 13:25:32,488 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:32,488 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:32,489 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:32,489 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:32,489 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:32,489 INFO L82 PathProgramCache]: Analyzing trace with hash -407334014, now seen corresponding path program 1 times [2020-07-07 13:25:32,490 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:32,490 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1002065706] [2020-07-07 13:25:32,490 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:32,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,664 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:32,671 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:32,671 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:32,671 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1002065706] [2020-07-07 13:25:32,672 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:32,672 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:32,672 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1154449338] [2020-07-07 13:25:32,673 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:32,673 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:32,673 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:32,674 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:32,674 INFO L87 Difference]: Start difference. First operand 67 states and 70 transitions. Second operand 8 states. [2020-07-07 13:25:32,977 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:32,978 INFO L93 Difference]: Finished difference Result 121 states and 127 transitions. [2020-07-07 13:25:32,978 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:25:32,978 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-07 13:25:32,979 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:32,980 INFO L225 Difference]: With dead ends: 121 [2020-07-07 13:25:32,980 INFO L226 Difference]: Without dead ends: 118 [2020-07-07 13:25:32,981 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 16 GetRequests, 3 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=57, Invalid=125, Unknown=0, NotChecked=0, Total=182 [2020-07-07 13:25:32,982 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 118 states. [2020-07-07 13:25:32,999 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 118 to 76. [2020-07-07 13:25:32,999 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 13:25:33,001 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 80 transitions. [2020-07-07 13:25:33,001 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 80 transitions. Word has length 23 [2020-07-07 13:25:33,001 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:33,002 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 80 transitions. [2020-07-07 13:25:33,002 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:33,002 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 80 transitions. [2020-07-07 13:25:33,003 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-07-07 13:25:33,003 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:33,004 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:33,004 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:33,004 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:33,004 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:33,005 INFO L82 PathProgramCache]: Analyzing trace with hash -1213824752, now seen corresponding path program 1 times [2020-07-07 13:25:33,005 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:33,005 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1127581771] [2020-07-07 13:25:33,006 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:33,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:33,055 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:33,092 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:33,093 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:25:33,093 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:25:33,093 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:33,114 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:25:33 BoogieIcfgContainer [2020-07-07 13:25:33,115 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:25:33,118 INFO L168 Benchmark]: Toolchain (without parser) took 3076.88 ms. Allocated memory was 145.2 MB in the beginning and 235.4 MB in the end (delta: 90.2 MB). Free memory was 102.0 MB in the beginning and 89.9 MB in the end (delta: 12.1 MB). Peak memory consumption was 102.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,119 INFO L168 Benchmark]: CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,120 INFO L168 Benchmark]: CACSL2BoogieTranslator took 625.68 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 169.0 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,121 INFO L168 Benchmark]: Boogie Preprocessor took 60.27 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 166.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,122 INFO L168 Benchmark]: RCFGBuilder took 631.44 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 116.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,123 INFO L168 Benchmark]: TraceAbstraction took 1754.46 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 115.6 MB in the beginning and 89.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:33,127 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.24 ms. Allocated memory is still 145.2 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 625.68 ms. Allocated memory was 145.2 MB in the beginning and 202.4 MB in the end (delta: 57.1 MB). Free memory was 101.8 MB in the beginning and 169.0 MB in the end (delta: -67.2 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 60.27 ms. Allocated memory is still 202.4 MB. Free memory was 169.0 MB in the beginning and 166.3 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 631.44 ms. Allocated memory is still 202.4 MB. Free memory was 166.3 MB in the beginning and 116.3 MB in the end (delta: 50.0 MB). Peak memory consumption was 50.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1754.46 ms. Allocated memory was 202.4 MB in the beginning and 235.4 MB in the end (delta: 33.0 MB). Free memory was 115.6 MB in the beginning and 89.9 MB in the end (delta: 25.7 MB). Peak memory consumption was 58.8 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 1038]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L995] SLL* list = malloc(sizeof(SLL)); [L996] list->next = ((void*)0) [L997] list->colour = BLACK [L999] SLL* end = list; [L1002] COND FALSE !(__VERIFIER_nondet_int()) [L1023] end = ((void*)0) [L1024] end = list [L1027] COND FALSE !(!(((void*)0) != end)) [L1028] EXPR end->colour [L1028] COND FALSE !(!(BLACK == end->colour)) [L1030] COND TRUE ((void*)0) != end [L1032] EXPR end->colour [L1032] COND FALSE !(RED == end->colour) [L1038] EXPR end->next [L1038] COND TRUE !(end->next) [L1038] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 3 procedures, 92 locations, 3 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.6s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 205 SDtfs, 506 SDslu, 206 SDs, 0 SdLazy, 334 SolverSat, 14 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.4s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 29 GetRequests, 9 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=92occurred in iteration=0, 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, 3 MinimizatonAttempts, 67 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, 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...