/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-simple/sll2n_update_all_reverse.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:06:59,757 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:06:59,761 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:06:59,792 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:06:59,793 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:06:59,794 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:06:59,796 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:06:59,798 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:06:59,800 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:06:59,801 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:06:59,802 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:06:59,804 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:06:59,804 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:06:59,806 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:06:59,807 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:06:59,808 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:06:59,812 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:06:59,813 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:06:59,818 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:06:59,822 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:06:59,825 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:06:59,829 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:06:59,832 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:06:59,834 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:06:59,838 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:06:59,841 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:06:59,841 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:06:59,846 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:06:59,847 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:06:59,848 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:06:59,848 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:06:59,851 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:06:59,852 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:06:59,854 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:06:59,856 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:06:59,856 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:06:59,858 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:06:59,859 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:06:59,859 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:06:59,860 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:06:59,863 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:06:59,864 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 19:06:59,901 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:06:59,902 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:06:59,903 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:06:59,907 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:06:59,907 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:06:59,908 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:06:59,908 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:06:59,908 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:06:59,908 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:06:59,908 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:06:59,909 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:06:59,909 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:06:59,909 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:06:59,909 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:06:59,909 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:06:59,910 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:06:59,912 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:06:59,912 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:06:59,912 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:06:59,913 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:06:59,913 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:06:59,913 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:06:59,913 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:07:00,307 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:07:00,324 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:07:00,328 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:07:00,330 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:07:00,331 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:07:00,332 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-08-22 19:07:00,432 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb911d/d726784bde274a53a7780920be415385/FLAG5cc4a6018 [2020-08-22 19:07:01,109 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:07:01,110 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-simple/sll2n_update_all_reverse.i [2020-08-22 19:07:01,130 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb911d/d726784bde274a53a7780920be415385/FLAG5cc4a6018 [2020-08-22 19:07:01,373 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fe7eb911d/d726784bde274a53a7780920be415385 [2020-08-22 19:07:01,391 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:07:01,395 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:07:01,403 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:07:01,404 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:07:01,409 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:07:01,410 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:07:01" (1/1) ... [2020-08-22 19:07:01,415 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@44b5ff7c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:01, skipping insertion in model container [2020-08-22 19:07:01,416 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:07:01" (1/1) ... [2020-08-22 19:07:01,430 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:07:01,513 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:07:02,122 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:07:02,141 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:07:02,195 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:07:02,277 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:07:02,278 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02 WrapperNode [2020-08-22 19:07:02,279 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:07:02,280 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:07:02,280 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:07:02,280 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:07:02,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,321 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,341 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,350 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,356 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (1/1) ... [2020-08-22 19:07:02,365 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:07:02,366 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:07:02,366 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:07:02,366 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:07:02,368 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (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 19:07:02,448 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:07:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:07:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:07:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:07:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 19:07:02,449 INFO L138 BoogieDeclarations]: Found implementation of procedure node_create [2020-08-22 19:07:02,451 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_create [2020-08-22 19:07:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_destroy [2020-08-22 19:07:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_get_data_at [2020-08-22 19:07:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure sll_update_at [2020-08-22 19:07:02,452 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:07:02,453 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:07:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:07:02,454 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:07:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:07:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:07:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:07:02,455 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:07:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:07:02,456 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:07:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:07:02,458 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:07:02,461 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:07:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:07:02,462 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:07:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:07:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:07:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:07:02,463 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:07:02,464 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:07:02,465 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:07:02,466 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:07:02,467 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:07:02,468 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:07:02,469 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:07:02,470 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:07:02,471 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:07:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:07:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:07:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:07:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:07:02,472 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:07:02,473 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:07:02,474 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:07:02,475 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:07:02,476 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 19:07:02,477 INFO L130 BoogieDeclarations]: Found specification of procedure node_create [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure sll_create [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure sll_destroy [2020-08-22 19:07:02,478 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure sll_get_data_at [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure sll_update_at [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:07:02,479 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:07:02,480 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:07:03,031 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 19:07:03,268 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:07:03,269 INFO L295 CfgBuilder]: Removed 6 assume(true) statements. [2020-08-22 19:07:03,275 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:07:03 BoogieIcfgContainer [2020-08-22 19:07:03,276 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:07:03,277 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:07:03,278 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:07:03,283 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:07:03,283 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:07:01" (1/3) ... [2020-08-22 19:07:03,284 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100f109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:07:03, skipping insertion in model container [2020-08-22 19:07:03,285 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:07:02" (2/3) ... [2020-08-22 19:07:03,285 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@100f109e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:07:03, skipping insertion in model container [2020-08-22 19:07:03,286 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:07:03" (3/3) ... [2020-08-22 19:07:03,288 INFO L109 eAbstractionObserver]: Analyzing ICFG sll2n_update_all_reverse.i [2020-08-22 19:07:03,305 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:07:03,318 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:07:03,340 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:07:03,375 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:07:03,376 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:07:03,376 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:07:03,376 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:07:03,376 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:07:03,377 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:07:03,377 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:07:03,377 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:07:03,400 INFO L276 IsEmpty]: Start isEmpty. Operand 103 states. [2020-08-22 19:07:03,425 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 19:07:03,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:03,428 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] [2020-08-22 19:07:03,428 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:03,438 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:03,439 INFO L82 PathProgramCache]: Analyzing trace with hash 482514570, now seen corresponding path program 1 times [2020-08-22 19:07:03,451 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:03,452 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [301529567] [2020-08-22 19:07:03,452 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:03,577 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:03,667 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:03,750 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:03,754 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:03,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 19:07:03,789 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:03,798 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:07:03,802 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:03,822 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 19:07:03,825 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [301529567] [2020-08-22 19:07:03,828 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:03,829 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-08-22 19:07:03,830 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [793859105] [2020-08-22 19:07:03,839 INFO L459 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-08-22 19:07:03,841 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:03,861 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-08-22 19:07:03,862 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-08-22 19:07:03,866 INFO L87 Difference]: Start difference. First operand 103 states. Second operand 4 states. [2020-08-22 19:07:04,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:04,442 INFO L93 Difference]: Finished difference Result 230 states and 285 transitions. [2020-08-22 19:07:04,443 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-08-22 19:07:04,445 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 38 [2020-08-22 19:07:04,446 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:04,466 INFO L225 Difference]: With dead ends: 230 [2020-08-22 19:07:04,466 INFO L226 Difference]: Without dead ends: 128 [2020-08-22 19:07:04,474 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-08-22 19:07:04,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 128 states. [2020-08-22 19:07:04,593 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 128 to 84. [2020-08-22 19:07:04,596 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-08-22 19:07:04,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-08-22 19:07:04,610 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 38 [2020-08-22 19:07:04,611 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:04,611 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-08-22 19:07:04,611 INFO L480 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-08-22 19:07:04,612 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-08-22 19:07:04,614 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2020-08-22 19:07:04,616 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:04,617 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] [2020-08-22 19:07:04,617 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:07:04,617 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:04,618 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:04,618 INFO L82 PathProgramCache]: Analyzing trace with hash -613399993, now seen corresponding path program 1 times [2020-08-22 19:07:04,618 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:04,619 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [572188316] [2020-08-22 19:07:04,619 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:04,628 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:04,670 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:04,740 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:04,742 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:04,767 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 19:07:04,774 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:04,784 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 25 [2020-08-22 19:07:04,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:04,799 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 19:07:04,800 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [572188316] [2020-08-22 19:07:04,800 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:04,800 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-08-22 19:07:04,801 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1262231307] [2020-08-22 19:07:04,802 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-08-22 19:07:04,803 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:04,803 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-08-22 19:07:04,803 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-08-22 19:07:04,805 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 6 states. [2020-08-22 19:07:05,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:05,509 INFO L93 Difference]: Finished difference Result 171 states and 187 transitions. [2020-08-22 19:07:05,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:07:05,514 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 38 [2020-08-22 19:07:05,514 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:05,520 INFO L225 Difference]: With dead ends: 171 [2020-08-22 19:07:05,520 INFO L226 Difference]: Without dead ends: 144 [2020-08-22 19:07:05,526 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 13 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:07:05,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 144 states. [2020-08-22 19:07:05,590 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 144 to 85. [2020-08-22 19:07:05,590 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 85 states. [2020-08-22 19:07:05,592 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 89 transitions. [2020-08-22 19:07:05,592 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 89 transitions. Word has length 38 [2020-08-22 19:07:05,593 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:05,593 INFO L479 AbstractCegarLoop]: Abstraction has 85 states and 89 transitions. [2020-08-22 19:07:05,593 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-08-22 19:07:05,594 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 89 transitions. [2020-08-22 19:07:05,608 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 52 [2020-08-22 19:07:05,608 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:05,608 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] [2020-08-22 19:07:05,609 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:07:05,609 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:05,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:05,610 INFO L82 PathProgramCache]: Analyzing trace with hash -841200203, now seen corresponding path program 1 times [2020-08-22 19:07:05,610 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:05,611 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1173457106] [2020-08-22 19:07:05,611 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:05,675 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:07:05,719 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:05,761 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:07:05,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:05,786 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 9 [2020-08-22 19:07:05,796 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:05,851 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 23 [2020-08-22 19:07:05,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:05,864 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 38 [2020-08-22 19:07:05,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:07:05,877 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 19:07:05,878 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1173457106] [2020-08-22 19:07:05,878 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:07:05,878 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-08-22 19:07:05,879 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [39756323] [2020-08-22 19:07:05,879 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-08-22 19:07:05,879 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:07:05,880 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-08-22 19:07:05,880 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2020-08-22 19:07:05,881 INFO L87 Difference]: Start difference. First operand 85 states and 89 transitions. Second operand 8 states. [2020-08-22 19:07:06,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:07:06,373 INFO L93 Difference]: Finished difference Result 147 states and 156 transitions. [2020-08-22 19:07:06,376 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-08-22 19:07:06,376 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 51 [2020-08-22 19:07:06,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:07:06,378 INFO L225 Difference]: With dead ends: 147 [2020-08-22 19:07:06,382 INFO L226 Difference]: Without dead ends: 93 [2020-08-22 19:07:06,384 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2020-08-22 19:07:06,384 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-08-22 19:07:06,414 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 86. [2020-08-22 19:07:06,414 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-08-22 19:07:06,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 90 transitions. [2020-08-22 19:07:06,420 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 90 transitions. Word has length 51 [2020-08-22 19:07:06,421 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:07:06,421 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 90 transitions. [2020-08-22 19:07:06,421 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-08-22 19:07:06,421 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 90 transitions. [2020-08-22 19:07:06,424 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 70 [2020-08-22 19:07:06,425 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:07:06,425 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-08-22 19:07:06,425 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:07:06,426 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:07:06,426 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:07:06,426 INFO L82 PathProgramCache]: Analyzing trace with hash 1957255427, now seen corresponding path program 1 times [2020-08-22 19:07:06,427 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:07:06,427 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1236697207] [2020-08-22 19:07:06,428 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:07:06,446 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:07:06,447 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 19:07:06,460 INFO L168 Benchmark]: Toolchain (without parser) took 5060.80 ms. Allocated memory was 139.5 MB in the beginning and 248.5 MB in the end (delta: 109.1 MB). Free memory was 102.6 MB in the beginning and 137.6 MB in the end (delta: -35.0 MB). Peak memory consumption was 74.0 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,465 INFO L168 Benchmark]: CDTParser took 0.39 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,467 INFO L168 Benchmark]: CACSL2BoogieTranslator took 875.93 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 169.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,471 INFO L168 Benchmark]: Boogie Preprocessor took 85.40 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 166.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,473 INFO L168 Benchmark]: RCFGBuilder took 910.30 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 115.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,476 INFO L168 Benchmark]: TraceAbstraction took 3175.15 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 114.6 MB in the beginning and 137.6 MB in the end (delta: -23.0 MB). Peak memory consumption was 21.6 MB. Max. memory is 7.1 GB. [2020-08-22 19:07:06,486 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.39 ms. Allocated memory is still 139.5 MB. Free memory was 122.0 MB in the beginning and 121.8 MB in the end (delta: 209.7 kB). Peak memory consumption was 209.7 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 875.93 ms. Allocated memory was 139.5 MB in the beginning and 203.9 MB in the end (delta: 64.5 MB). Free memory was 102.4 MB in the beginning and 169.7 MB in the end (delta: -67.4 MB). Peak memory consumption was 26.5 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 85.40 ms. Allocated memory is still 203.9 MB. Free memory was 169.7 MB in the beginning and 166.4 MB in the end (delta: 3.3 MB). Peak memory consumption was 3.3 MB. Max. memory is 7.1 GB. * RCFGBuilder took 910.30 ms. Allocated memory is still 203.9 MB. Free memory was 166.4 MB in the beginning and 115.3 MB in the end (delta: 51.1 MB). Peak memory consumption was 51.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 3175.15 ms. Allocated memory was 203.9 MB in the beginning and 248.5 MB in the end (delta: 44.6 MB). Free memory was 114.6 MB in the beginning and 137.6 MB in the end (delta: -23.0 MB). Peak memory consumption was 21.6 MB. 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...