/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/list-ext2-properties/list_and_tree_cnstr-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:49,617 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:49,620 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:49,658 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:49,658 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:49,669 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:49,671 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:49,673 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:49,676 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:49,679 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:49,680 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:49,682 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:49,682 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:49,684 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:49,686 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:49,688 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:49,689 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:49,690 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:49,691 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:49,698 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:49,701 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:49,701 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:49,702 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:49,703 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:49,707 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:49,707 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:49,708 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:49,710 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:49,711 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:49,712 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:49,713 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:49,713 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:49,714 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:49,715 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:49,716 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:49,716 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:49,716 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:49,717 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:49,717 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:49,718 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:49,719 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:49,720 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:06:49,736 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:49,736 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:49,738 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:49,738 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:49,738 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:49,738 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:49,739 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:49,739 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:49,739 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:49,740 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:49,741 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:49,741 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:49,741 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:49,741 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:49,742 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:49,742 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:49,742 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:49,742 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:49,743 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:49,743 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:49,743 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:49,743 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:49,743 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:06:50,012 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:06:50,030 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:06:50,034 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:06:50,035 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:06:50,035 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:06:50,036 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-08-22 19:06:50,098 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d66bae2d/151db6a9f02a44079f8567de6491d9f6/FLAG5079e33e3 [2020-08-22 19:06:50,621 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:06:50,622 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext2-properties/list_and_tree_cnstr-1.i [2020-08-22 19:06:50,639 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d66bae2d/151db6a9f02a44079f8567de6491d9f6/FLAG5079e33e3 [2020-08-22 19:06:50,917 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/3d66bae2d/151db6a9f02a44079f8567de6491d9f6 [2020-08-22 19:06:50,925 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:06:50,926 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:06:50,927 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:50,928 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:06:50,931 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:06:50,932 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:50" (1/1) ... [2020-08-22 19:06:50,935 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@25d3fa00 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:50, skipping insertion in model container [2020-08-22 19:06:50,935 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:06:50" (1/1) ... [2020-08-22 19:06:50,943 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:06:50,982 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:06:51,511 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:51,523 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:06:51,600 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:06:51,656 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:06:51,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51 WrapperNode [2020-08-22 19:06:51,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:06:51,657 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:06:51,657 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:06:51,657 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:06:51,671 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,671 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,687 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,688 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,718 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,722 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (1/1) ... [2020-08-22 19:06:51,729 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:06:51,729 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:06:51,730 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:06:51,730 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:06:51,731 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (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 [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 19:06:51,785 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:06:51,785 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:06:51,786 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:06:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:06:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:06:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:06:51,787 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:06:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:06:51,788 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:06:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:06:51,789 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:06:51,790 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:06:51,791 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:06:51,792 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:06:51,793 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:06:51,795 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:06:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:06:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:06:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:06:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:06:51,796 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:06:51,797 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:06:51,798 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:06:51,799 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:06:51,800 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:06:51,801 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:06:51,801 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:06:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:06:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:06:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:06:51,802 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:06:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:06:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:06:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:06:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:06:51,803 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:06:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:06:51,804 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:06:51,805 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:06:51,806 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:06:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:06:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:06:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:06:51,807 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:06:51,808 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:06:51,809 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:06:51,810 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:06:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:06:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:06:51,811 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:06:52,170 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 19:06:52,500 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:06:52,500 INFO L295 CfgBuilder]: Removed 8 assume(true) statements. [2020-08-22 19:06:52,505 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:52 BoogieIcfgContainer [2020-08-22 19:06:52,505 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:06:52,507 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:06:52,507 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:06:52,510 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:06:52,510 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:06:50" (1/3) ... [2020-08-22 19:06:52,511 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652da6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:52, skipping insertion in model container [2020-08-22 19:06:52,511 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:06:51" (2/3) ... [2020-08-22 19:06:52,512 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@652da6c7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:06:52, skipping insertion in model container [2020-08-22 19:06:52,512 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:06:52" (3/3) ... [2020-08-22 19:06:52,513 INFO L109 eAbstractionObserver]: Analyzing ICFG list_and_tree_cnstr-1.i [2020-08-22 19:06:52,523 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:06:52,531 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:06:52,544 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:06:52,565 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:06:52,565 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:06:52,565 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:06:52,566 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:06:52,566 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:06:52,566 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:06:52,566 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:06:52,567 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:06:52,583 INFO L276 IsEmpty]: Start isEmpty. Operand 177 states. [2020-08-22 19:06:52,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 32 [2020-08-22 19:06:52,609 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:52,610 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] [2020-08-22 19:06:52,610 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:52,617 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:52,617 INFO L82 PathProgramCache]: Analyzing trace with hash -652445128, now seen corresponding path program 1 times [2020-08-22 19:06:52,626 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:52,626 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1276179693] [2020-08-22 19:06:52,626 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:52,702 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:52,751 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:52,825 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:52,828 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:52,838 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:52,840 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1276179693] [2020-08-22 19:06:52,842 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:52,842 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:06:52,843 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1524701712] [2020-08-22 19:06:52,847 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:06:52,848 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:52,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:06:52,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:06:52,864 INFO L87 Difference]: Start difference. First operand 177 states. Second operand 3 states. [2020-08-22 19:06:53,234 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:53,235 INFO L93 Difference]: Finished difference Result 342 states and 400 transitions. [2020-08-22 19:06:53,235 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:06:53,237 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 31 [2020-08-22 19:06:53,237 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:53,247 INFO L225 Difference]: With dead ends: 342 [2020-08-22 19:06:53,248 INFO L226 Difference]: Without dead ends: 166 [2020-08-22 19:06:53,253 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 [2020-08-22 19:06:53,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2020-08-22 19:06:53,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 166. [2020-08-22 19:06:53,303 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 166 states. [2020-08-22 19:06:53,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 166 states to 166 states and 183 transitions. [2020-08-22 19:06:53,307 INFO L78 Accepts]: Start accepts. Automaton has 166 states and 183 transitions. Word has length 31 [2020-08-22 19:06:53,308 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:53,308 INFO L479 AbstractCegarLoop]: Abstraction has 166 states and 183 transitions. [2020-08-22 19:06:53,308 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:06:53,308 INFO L276 IsEmpty]: Start isEmpty. Operand 166 states and 183 transitions. [2020-08-22 19:06:53,311 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-08-22 19:06:53,311 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:53,311 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:53,311 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:06:53,311 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:53,312 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:53,312 INFO L82 PathProgramCache]: Analyzing trace with hash 473660712, now seen corresponding path program 1 times [2020-08-22 19:06:53,312 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:53,313 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [519889724] [2020-08-22 19:06:53,313 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:53,317 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:53,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,432 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:53,434 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:53,444 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [519889724] [2020-08-22 19:06:53,445 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:53,445 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-08-22 19:06:53,445 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [751729722] [2020-08-22 19:06:53,447 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-08-22 19:06:53,448 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:53,448 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-08-22 19:06:53,448 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:06:53,448 INFO L87 Difference]: Start difference. First operand 166 states and 183 transitions. Second operand 5 states. [2020-08-22 19:06:53,787 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:53,787 INFO L93 Difference]: Finished difference Result 251 states and 277 transitions. [2020-08-22 19:06:53,788 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:06:53,788 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-08-22 19:06:53,789 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:53,792 INFO L225 Difference]: With dead ends: 251 [2020-08-22 19:06:53,792 INFO L226 Difference]: Without dead ends: 201 [2020-08-22 19:06:53,794 INFO L675 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 [2020-08-22 19:06:53,795 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 201 states. [2020-08-22 19:06:53,820 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 201 to 200. [2020-08-22 19:06:53,821 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 200 states. [2020-08-22 19:06:53,822 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 200 states to 200 states and 222 transitions. [2020-08-22 19:06:53,822 INFO L78 Accepts]: Start accepts. Automaton has 200 states and 222 transitions. Word has length 41 [2020-08-22 19:06:53,823 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:53,823 INFO L479 AbstractCegarLoop]: Abstraction has 200 states and 222 transitions. [2020-08-22 19:06:53,823 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-08-22 19:06:53,823 INFO L276 IsEmpty]: Start isEmpty. Operand 200 states and 222 transitions. [2020-08-22 19:06:53,826 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 55 [2020-08-22 19:06:53,826 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:53,826 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:06:53,827 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:06:53,827 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:53,827 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:53,827 INFO L82 PathProgramCache]: Analyzing trace with hash 1870874818, now seen corresponding path program 1 times [2020-08-22 19:06:53,828 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:53,828 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1926856720] [2020-08-22 19:06:53,828 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:53,867 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:53,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,970 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:53,972 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:53,978 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:53,978 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1926856720] [2020-08-22 19:06:53,979 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:53,979 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:06:53,979 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [298978370] [2020-08-22 19:06:53,980 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:06:53,980 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:53,980 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:06:53,980 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:06:53,981 INFO L87 Difference]: Start difference. First operand 200 states and 222 transitions. Second operand 4 states. [2020-08-22 19:06:54,219 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:54,219 INFO L93 Difference]: Finished difference Result 321 states and 359 transitions. [2020-08-22 19:06:54,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-08-22 19:06:54,220 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 54 [2020-08-22 19:06:54,220 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:54,222 INFO L225 Difference]: With dead ends: 321 [2020-08-22 19:06:54,222 INFO L226 Difference]: Without dead ends: 202 [2020-08-22 19:06:54,223 INFO L675 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 [2020-08-22 19:06:54,225 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2020-08-22 19:06:54,242 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 202. [2020-08-22 19:06:54,242 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 202 states. [2020-08-22 19:06:54,243 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 202 states to 202 states and 224 transitions. [2020-08-22 19:06:54,243 INFO L78 Accepts]: Start accepts. Automaton has 202 states and 224 transitions. Word has length 54 [2020-08-22 19:06:54,244 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:54,244 INFO L479 AbstractCegarLoop]: Abstraction has 202 states and 224 transitions. [2020-08-22 19:06:54,244 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:06:54,244 INFO L276 IsEmpty]: Start isEmpty. Operand 202 states and 224 transitions. [2020-08-22 19:06:54,248 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-08-22 19:06:54,248 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:54,248 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, 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] [2020-08-22 19:06:54,248 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:06:54,249 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:54,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:54,249 INFO L82 PathProgramCache]: Analyzing trace with hash 129316031, now seen corresponding path program 1 times [2020-08-22 19:06:54,249 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:54,249 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [836206117] [2020-08-22 19:06:54,250 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:54,267 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:06:54,295 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:54,409 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:06:54,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:06:54,421 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:06:54,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [836206117] [2020-08-22 19:06:54,422 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:06:54,422 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:06:54,422 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874074050] [2020-08-22 19:06:54,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:06:54,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:06:54,424 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:06:54,425 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:06:54,425 INFO L87 Difference]: Start difference. First operand 202 states and 224 transitions. Second operand 7 states. [2020-08-22 19:06:54,830 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:06:54,830 INFO L93 Difference]: Finished difference Result 279 states and 306 transitions. [2020-08-22 19:06:54,831 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 19:06:54,831 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 56 [2020-08-22 19:06:54,831 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:06:54,832 INFO L225 Difference]: With dead ends: 279 [2020-08-22 19:06:54,832 INFO L226 Difference]: Without dead ends: 273 [2020-08-22 19:06:54,834 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:06:54,835 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 273 states. [2020-08-22 19:06:54,852 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 273 to 215. [2020-08-22 19:06:54,852 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 215 states. [2020-08-22 19:06:54,853 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 215 states to 215 states and 240 transitions. [2020-08-22 19:06:54,853 INFO L78 Accepts]: Start accepts. Automaton has 215 states and 240 transitions. Word has length 56 [2020-08-22 19:06:54,854 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:06:54,854 INFO L479 AbstractCegarLoop]: Abstraction has 215 states and 240 transitions. [2020-08-22 19:06:54,854 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:06:54,854 INFO L276 IsEmpty]: Start isEmpty. Operand 215 states and 240 transitions. [2020-08-22 19:06:54,855 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2020-08-22 19:06:54,855 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:06:54,855 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 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] [2020-08-22 19:06:54,856 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:06:54,856 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:06:54,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:06:54,856 INFO L82 PathProgramCache]: Analyzing trace with hash 593034583, now seen corresponding path program 1 times [2020-08-22 19:06:54,857 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:06:54,857 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1935222598] [2020-08-22 19:06:54,857 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:06:54,870 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:06:54,871 FATAL L? ?]: The Plugin de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction has thrown an exception: java.lang.NullPointerException at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:293) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:207) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModulePreferences.construct(IpTcStrategyModulePreferences.java:144) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.getOrConstruct(IpTcStrategyModuleBase.java:101) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.IpTcStrategyModuleBase.isCorrect(IpTcStrategyModuleBase.java:57) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.checkFeasibility(AutomatonFreeRefinementEngine.java:242) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.executeStrategy(AutomatonFreeRefinementEngine.java:166) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.AutomatonFreeRefinementEngine.(AutomatonFreeRefinementEngine.java:85) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.tracehandling.TraceAbstractionRefinementEngine.(TraceAbstractionRefinementEngine.java:75) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.BasicCegarLoop.isCounterexampleFeasible(BasicCegarLoop.java:508) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterateInternal(AbstractCegarLoop.java:436) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.AbstractCegarLoop.iterate(AbstractCegarLoop.java:370) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.CegarLoopResult.iterate(CegarLoopResult.java:142) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.iterateNew(TraceAbstractionStarter.java:334) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.runCegarLoops(TraceAbstractionStarter.java:175) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionStarter.(TraceAbstractionStarter.java:127) at de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver.finish(TraceAbstractionObserver.java:120) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runObserver(PluginConnector.java:168) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.runTool(PluginConnector.java:151) at de.uni_freiburg.informatik.ultimate.core.coreplugin.PluginConnector.run(PluginConnector.java:128) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.executePluginConnector(ToolchainWalker.java:232) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.processPlugin(ToolchainWalker.java:226) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walkUnprotected(ToolchainWalker.java:142) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainWalker.walk(ToolchainWalker.java:104) at de.uni_freiburg.informatik.ultimate.core.coreplugin.ToolchainManager$Toolchain.processToolchain(ToolchainManager.java:317) at de.uni_freiburg.informatik.ultimate.core.coreplugin.toolchain.DefaultToolchainJob.run(DefaultToolchainJob.java:145) at org.eclipse.core.internal.jobs.Worker.run(Worker.java:55) [2020-08-22 19:06:54,877 INFO L168 Benchmark]: Toolchain (without parser) took 3949.61 ms. Allocated memory was 141.6 MB in the beginning and 245.9 MB in the end (delta: 104.3 MB). Free memory was 102.7 MB in the beginning and 195.2 MB in the end (delta: -92.5 MB). Peak memory consumption was 11.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:54,877 INFO L168 Benchmark]: CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:06:54,879 INFO L168 Benchmark]: CACSL2BoogieTranslator took 729.30 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 171.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:54,879 INFO L168 Benchmark]: Boogie Preprocessor took 72.18 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 167.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:54,880 INFO L168 Benchmark]: RCFGBuilder took 775.77 ms. Allocated memory is still 205.5 MB. Free memory was 167.9 MB in the beginning and 100.9 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:06:54,881 INFO L168 Benchmark]: TraceAbstraction took 2367.41 ms. Allocated memory was 205.5 MB in the beginning and 245.9 MB in the end (delta: 40.4 MB). Free memory was 100.9 MB in the beginning and 195.2 MB in the end (delta: -94.3 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:06:54,885 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18 ms. Allocated memory is still 141.6 MB. Free memory was 121.9 MB in the beginning and 121.7 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 729.30 ms. Allocated memory was 141.6 MB in the beginning and 205.5 MB in the end (delta: 64.0 MB). Free memory was 102.3 MB in the beginning and 171.2 MB in the end (delta: -68.9 MB). Peak memory consumption was 23.8 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.18 ms. Allocated memory is still 205.5 MB. Free memory was 171.2 MB in the beginning and 167.9 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 775.77 ms. Allocated memory is still 205.5 MB. Free memory was 167.9 MB in the beginning and 100.9 MB in the end (delta: 67.0 MB). Peak memory consumption was 67.0 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2367.41 ms. Allocated memory was 205.5 MB in the beginning and 245.9 MB in the end (delta: 40.4 MB). Free memory was 100.9 MB in the beginning and 195.2 MB in the end (delta: -94.3 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:413) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...