/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:31,359 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:31,362 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:31,379 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:31,379 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:31,381 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:31,383 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:31,397 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:31,398 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:31,399 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:31,402 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:31,404 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:31,405 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:31,408 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:31,410 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:31,412 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:31,415 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:31,416 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:31,418 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:31,424 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:31,427 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:31,430 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:31,431 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:31,432 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:31,434 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:31,434 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:31,434 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:31,437 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:31,438 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:31,439 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:31,439 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:31,440 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:31,441 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:31,442 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:31,443 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:31,443 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:31,446 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:31,446 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:31,446 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:31,447 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:31,448 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:31,449 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-07-07 13:25:31,459 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:31,460 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:31,461 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:31,461 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:31,461 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:31,461 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:31,462 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:31,463 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:31,463 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:31,463 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:31,463 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:31,463 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:31,464 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:31,464 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:31,464 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:31,464 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:31,464 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:31,465 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:31,740 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:31,753 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:31,756 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:31,758 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:31,758 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:31,759 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-07 13:25:31,842 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c187c9b7f/e80f0d0a9776495bb45a148b3011e656/FLAG7ec40693a [2020-07-07 13:25:32,395 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:32,396 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/forester-heap/sll-rb-sentinel-2.i [2020-07-07 13:25:32,414 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c187c9b7f/e80f0d0a9776495bb45a148b3011e656/FLAG7ec40693a [2020-07-07 13:25:32,666 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c187c9b7f/e80f0d0a9776495bb45a148b3011e656 [2020-07-07 13:25:32,676 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:32,678 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:32,679 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:32,679 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:32,682 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:32,683 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:32" (1/1) ... [2020-07-07 13:25:32,686 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@11e615c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:32, skipping insertion in model container [2020-07-07 13:25:32,686 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:32" (1/1) ... [2020-07-07 13:25:32,693 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:32,733 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:33,160 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:33,171 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:33,229 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:33,289 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:33,290 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33 WrapperNode [2020-07-07 13:25:33,290 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:33,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:33,291 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:33,291 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:33,303 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,303 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,320 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,320 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,337 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,344 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,347 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... [2020-07-07 13:25:33,353 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:33,354 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:33,354 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:33,354 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:33,355 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:33,413 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:33,413 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:33,414 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:33,415 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:33,416 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:33,417 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:33,418 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:33,420 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:33,421 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:33,422 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:33,423 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:33,424 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:33,425 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:33,426 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:33,427 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:33,428 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:33,429 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:33,430 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:33,431 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:33,432 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:33,433 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:33,434 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:33,435 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:33,436 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:33,437 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:33,438 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:34,023 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:34,024 INFO L295 CfgBuilder]: Removed 11 assume(true) statements. [2020-07-07 13:25:34,028 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:34 BoogieIcfgContainer [2020-07-07 13:25:34,029 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:34,030 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:34,030 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:34,034 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:34,034 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:32" (1/3) ... [2020-07-07 13:25:34,035 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488caf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:34, skipping insertion in model container [2020-07-07 13:25:34,035 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:33" (2/3) ... [2020-07-07 13:25:34,036 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@488caf5c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:34, skipping insertion in model container [2020-07-07 13:25:34,036 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:34" (3/3) ... [2020-07-07 13:25:34,038 INFO L109 eAbstractionObserver]: Analyzing ICFG sll-rb-sentinel-2.i [2020-07-07 13:25:34,049 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:34,057 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 4 error locations. [2020-07-07 13:25:34,070 INFO L251 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2020-07-07 13:25:34,091 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:34,091 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:34,091 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:34,092 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:34,092 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:34,092 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:34,092 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:34,093 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:34,110 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states. [2020-07-07 13:25:34,121 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 22 [2020-07-07 13:25:34,121 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:34,122 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] [2020-07-07 13:25:34,123 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:34,129 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:34,129 INFO L82 PathProgramCache]: Analyzing trace with hash -159181327, now seen corresponding path program 1 times [2020-07-07 13:25:34,139 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:34,140 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1694878318] [2020-07-07 13:25:34,140 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:34,276 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:34,388 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:34,390 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1694878318] [2020-07-07 13:25:34,392 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:34,393 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:34,394 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [234919631] [2020-07-07 13:25:34,399 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:34,400 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:34,414 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:34,415 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:34,418 INFO L87 Difference]: Start difference. First operand 98 states. Second operand 3 states. [2020-07-07 13:25:34,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:34,669 INFO L93 Difference]: Finished difference Result 157 states and 194 transitions. [2020-07-07 13:25:34,670 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:34,671 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 21 [2020-07-07 13:25:34,672 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:34,682 INFO L225 Difference]: With dead ends: 157 [2020-07-07 13:25:34,682 INFO L226 Difference]: Without dead ends: 74 [2020-07-07 13:25:34,686 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:34,705 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-07-07 13:25:34,728 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 74. [2020-07-07 13:25:34,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2020-07-07 13:25:34,732 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 77 transitions. [2020-07-07 13:25:34,733 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 77 transitions. Word has length 21 [2020-07-07 13:25:34,734 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:34,734 INFO L479 AbstractCegarLoop]: Abstraction has 74 states and 77 transitions. [2020-07-07 13:25:34,734 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:34,734 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 77 transitions. [2020-07-07 13:25:34,735 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2020-07-07 13:25:34,735 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:34,735 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:34,736 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:34,736 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:34,736 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:34,737 INFO L82 PathProgramCache]: Analyzing trace with hash 1476818129, now seen corresponding path program 1 times [2020-07-07 13:25:34,737 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:34,737 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [86335834] [2020-07-07 13:25:34,737 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:34,769 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:34,917 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:34,917 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:34,917 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [86335834] [2020-07-07 13:25:34,918 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:34,918 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2020-07-07 13:25:34,918 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1572703225] [2020-07-07 13:25:34,919 INFO L459 AbstractCegarLoop]: Interpolant automaton has 8 states [2020-07-07 13:25:34,919 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:34,919 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2020-07-07 13:25:34,920 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:34,920 INFO L87 Difference]: Start difference. First operand 74 states and 77 transitions. Second operand 8 states. [2020-07-07 13:25:35,218 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:35,219 INFO L93 Difference]: Finished difference Result 92 states and 97 transitions. [2020-07-07 13:25:35,219 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-07-07 13:25:35,219 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 23 [2020-07-07 13:25:35,219 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:35,221 INFO L225 Difference]: With dead ends: 92 [2020-07-07 13:25:35,221 INFO L226 Difference]: Without dead ends: 90 [2020-07-07 13:25:35,223 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=41, Invalid=91, Unknown=0, NotChecked=0, Total=132 [2020-07-07 13:25:35,224 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2020-07-07 13:25:35,238 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 72. [2020-07-07 13:25:35,239 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 72 states. [2020-07-07 13:25:35,240 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 72 states to 72 states and 75 transitions. [2020-07-07 13:25:35,241 INFO L78 Accepts]: Start accepts. Automaton has 72 states and 75 transitions. Word has length 23 [2020-07-07 13:25:35,241 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:35,241 INFO L479 AbstractCegarLoop]: Abstraction has 72 states and 75 transitions. [2020-07-07 13:25:35,241 INFO L480 AbstractCegarLoop]: Interpolant automaton has 8 states. [2020-07-07 13:25:35,241 INFO L276 IsEmpty]: Start isEmpty. Operand 72 states and 75 transitions. [2020-07-07 13:25:35,242 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:25:35,242 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:35,242 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] [2020-07-07 13:25:35,243 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:35,243 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:35,243 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:35,243 INFO L82 PathProgramCache]: Analyzing trace with hash 1518762392, now seen corresponding path program 1 times [2020-07-07 13:25:35,244 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:35,244 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [800851385] [2020-07-07 13:25:35,244 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:35,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:35,560 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:35,577 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:35,577 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:35,578 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [800851385] [2020-07-07 13:25:35,581 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:35,581 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2020-07-07 13:25:35,581 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [517523657] [2020-07-07 13:25:35,582 INFO L459 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-07-07 13:25:35,582 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:35,583 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-07-07 13:25:35,583 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=25, Invalid=85, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:35,583 INFO L87 Difference]: Start difference. First operand 72 states and 75 transitions. Second operand 11 states. [2020-07-07 13:25:36,029 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:36,029 INFO L93 Difference]: Finished difference Result 124 states and 130 transitions. [2020-07-07 13:25:36,029 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2020-07-07 13:25:36,030 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 27 [2020-07-07 13:25:36,030 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:36,031 INFO L225 Difference]: With dead ends: 124 [2020-07-07 13:25:36,032 INFO L226 Difference]: Without dead ends: 121 [2020-07-07 13:25:36,032 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=104, Invalid=238, Unknown=0, NotChecked=0, Total=342 [2020-07-07 13:25:36,033 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2020-07-07 13:25:36,052 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 81. [2020-07-07 13:25:36,052 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2020-07-07 13:25:36,054 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 85 transitions. [2020-07-07 13:25:36,054 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 85 transitions. Word has length 27 [2020-07-07 13:25:36,054 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:36,054 INFO L479 AbstractCegarLoop]: Abstraction has 81 states and 85 transitions. [2020-07-07 13:25:36,054 INFO L480 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-07-07 13:25:36,055 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 85 transitions. [2020-07-07 13:25:36,056 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-07-07 13:25:36,056 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:36,056 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] [2020-07-07 13:25:36,056 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:36,057 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:36,057 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:36,057 INFO L82 PathProgramCache]: Analyzing trace with hash 2047332937, now seen corresponding path program 1 times [2020-07-07 13:25:36,058 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:36,058 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [956514132] [2020-07-07 13:25:36,058 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:36,076 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:36,193 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:36,201 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:36,204 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:36,205 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [956514132] [2020-07-07 13:25:36,205 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:36,205 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:25:36,205 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1011238324] [2020-07-07 13:25:36,206 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:25:36,206 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:36,206 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:25:36,207 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:25:36,207 INFO L87 Difference]: Start difference. First operand 81 states and 85 transitions. Second operand 6 states. [2020-07-07 13:25:36,523 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:36,524 INFO L93 Difference]: Finished difference Result 114 states and 120 transitions. [2020-07-07 13:25:36,526 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:36,526 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 36 [2020-07-07 13:25:36,526 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:36,527 INFO L225 Difference]: With dead ends: 114 [2020-07-07 13:25:36,527 INFO L226 Difference]: Without dead ends: 92 [2020-07-07 13:25:36,529 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 1 SyntacticMatches, 2 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:25:36,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2020-07-07 13:25:36,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 84. [2020-07-07 13:25:36,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 13:25:36,549 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 88 transitions. [2020-07-07 13:25:36,549 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 88 transitions. Word has length 36 [2020-07-07 13:25:36,550 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:36,550 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 88 transitions. [2020-07-07 13:25:36,550 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:25:36,550 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 88 transitions. [2020-07-07 13:25:36,551 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 41 [2020-07-07 13:25:36,551 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:36,552 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] [2020-07-07 13:25:36,552 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:36,552 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:36,552 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:36,553 INFO L82 PathProgramCache]: Analyzing trace with hash -1237644091, now seen corresponding path program 1 times [2020-07-07 13:25:36,553 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:36,553 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1790430641] [2020-07-07 13:25:36,553 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:36,645 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:37,243 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:37,255 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:37,255 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:37,255 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1790430641] [2020-07-07 13:25:37,256 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:37,256 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [18] imperfect sequences [] total 18 [2020-07-07 13:25:37,256 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [874925841] [2020-07-07 13:25:37,257 INFO L459 AbstractCegarLoop]: Interpolant automaton has 18 states [2020-07-07 13:25:37,257 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:37,257 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2020-07-07 13:25:37,258 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=245, Unknown=0, NotChecked=0, Total=306 [2020-07-07 13:25:37,258 INFO L87 Difference]: Start difference. First operand 84 states and 88 transitions. Second operand 18 states. [2020-07-07 13:25:38,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:38,494 INFO L93 Difference]: Finished difference Result 155 states and 162 transitions. [2020-07-07 13:25:38,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2020-07-07 13:25:38,495 INFO L78 Accepts]: Start accepts. Automaton has 18 states. Word has length 40 [2020-07-07 13:25:38,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:38,497 INFO L225 Difference]: With dead ends: 155 [2020-07-07 13:25:38,497 INFO L226 Difference]: Without dead ends: 152 [2020-07-07 13:25:38,502 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 133 ImplicationChecksByTransitivity, 1.1s TimeCoverageRelationStatistics Valid=279, Invalid=777, Unknown=0, NotChecked=0, Total=1056 [2020-07-07 13:25:38,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 152 states. [2020-07-07 13:25:38,548 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 152 to 97. [2020-07-07 13:25:38,548 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-07 13:25:38,553 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 103 transitions. [2020-07-07 13:25:38,553 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 103 transitions. Word has length 40 [2020-07-07 13:25:38,556 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:38,556 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 103 transitions. [2020-07-07 13:25:38,557 INFO L480 AbstractCegarLoop]: Interpolant automaton has 18 states. [2020-07-07 13:25:38,557 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 103 transitions. [2020-07-07 13:25:38,560 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-07 13:25:38,560 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:38,560 INFO L422 BasicCegarLoop]: trace histogram [2, 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] [2020-07-07 13:25:38,560 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:25:38,561 INFO L427 AbstractCegarLoop]: === Iteration 6 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:38,561 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:38,561 INFO L82 PathProgramCache]: Analyzing trace with hash 1411163060, now seen corresponding path program 1 times [2020-07-07 13:25:38,566 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:38,566 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [787005029] [2020-07-07 13:25:38,567 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:38,599 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,688 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:38,688 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:38,689 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [787005029] [2020-07-07 13:25:38,689 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:38,689 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-07-07 13:25:38,689 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1728971208] [2020-07-07 13:25:38,690 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-07-07 13:25:38,690 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:38,690 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-07-07 13:25:38,690 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:38,691 INFO L87 Difference]: Start difference. First operand 97 states and 103 transitions. Second operand 7 states. [2020-07-07 13:25:39,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:39,001 INFO L93 Difference]: Finished difference Result 136 states and 143 transitions. [2020-07-07 13:25:39,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-07-07 13:25:39,001 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 43 [2020-07-07 13:25:39,001 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:39,002 INFO L225 Difference]: With dead ends: 136 [2020-07-07 13:25:39,002 INFO L226 Difference]: Without dead ends: 97 [2020-07-07 13:25:39,003 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2020-07-07 13:25:39,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 97 states. [2020-07-07 13:25:39,028 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 97 to 97. [2020-07-07 13:25:39,029 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 97 states. [2020-07-07 13:25:39,030 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 102 transitions. [2020-07-07 13:25:39,031 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 102 transitions. Word has length 43 [2020-07-07 13:25:39,031 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:39,031 INFO L479 AbstractCegarLoop]: Abstraction has 97 states and 102 transitions. [2020-07-07 13:25:39,031 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-07-07 13:25:39,032 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 102 transitions. [2020-07-07 13:25:39,038 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 48 [2020-07-07 13:25:39,038 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:39,039 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] [2020-07-07 13:25:39,040 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-07-07 13:25:39,041 INFO L427 AbstractCegarLoop]: === Iteration 7 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:39,042 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:39,042 INFO L82 PathProgramCache]: Analyzing trace with hash -1215747511, now seen corresponding path program 1 times [2020-07-07 13:25:39,042 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:39,042 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1050845372] [2020-07-07 13:25:39,043 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:39,095 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,927 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,941 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:39,941 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:39,941 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1050845372] [2020-07-07 13:25:39,942 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:39,942 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-07 13:25:39,942 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1159061435] [2020-07-07 13:25:39,942 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 13:25:39,943 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:39,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 13:25:39,943 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=94, Invalid=368, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:25:39,944 INFO L87 Difference]: Start difference. First operand 97 states and 102 transitions. Second operand 22 states. [2020-07-07 13:25:41,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:41,574 INFO L93 Difference]: Finished difference Result 163 states and 170 transitions. [2020-07-07 13:25:41,577 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-07-07 13:25:41,577 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 47 [2020-07-07 13:25:41,577 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:41,578 INFO L225 Difference]: With dead ends: 163 [2020-07-07 13:25:41,578 INFO L226 Difference]: Without dead ends: 160 [2020-07-07 13:25:41,579 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 299 ImplicationChecksByTransitivity, 1.7s TimeCoverageRelationStatistics Valid=420, Invalid=1302, Unknown=0, NotChecked=0, Total=1722 [2020-07-07 13:25:41,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 160 states. [2020-07-07 13:25:41,597 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 160 to 106. [2020-07-07 13:25:41,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 106 states. [2020-07-07 13:25:41,598 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 106 states to 106 states and 111 transitions. [2020-07-07 13:25:41,598 INFO L78 Accepts]: Start accepts. Automaton has 106 states and 111 transitions. Word has length 47 [2020-07-07 13:25:41,598 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:41,598 INFO L479 AbstractCegarLoop]: Abstraction has 106 states and 111 transitions. [2020-07-07 13:25:41,599 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 13:25:41,599 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states and 111 transitions. [2020-07-07 13:25:41,600 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 54 [2020-07-07 13:25:41,600 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:41,600 INFO L422 BasicCegarLoop]: trace histogram [3, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 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] [2020-07-07 13:25:41,600 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-07-07 13:25:41,600 INFO L427 AbstractCegarLoop]: === Iteration 8 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:41,601 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:41,601 INFO L82 PathProgramCache]: Analyzing trace with hash 231328440, now seen corresponding path program 2 times [2020-07-07 13:25:41,601 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:41,601 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [514002755] [2020-07-07 13:25:41,602 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:41,635 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,411 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:42,427 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-07-07 13:25:42,428 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:42,428 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [514002755] [2020-07-07 13:25:42,428 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:42,428 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [22] imperfect sequences [] total 22 [2020-07-07 13:25:42,429 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1750919212] [2020-07-07 13:25:42,429 INFO L459 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-07-07 13:25:42,429 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:42,429 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-07-07 13:25:42,430 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=95, Invalid=367, Unknown=0, NotChecked=0, Total=462 [2020-07-07 13:25:42,430 INFO L87 Difference]: Start difference. First operand 106 states and 111 transitions. Second operand 22 states. [2020-07-07 13:25:43,912 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:43,912 INFO L93 Difference]: Finished difference Result 179 states and 188 transitions. [2020-07-07 13:25:43,913 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2020-07-07 13:25:43,913 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 53 [2020-07-07 13:25:43,913 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:43,914 INFO L225 Difference]: With dead ends: 179 [2020-07-07 13:25:43,915 INFO L226 Difference]: Without dead ends: 176 [2020-07-07 13:25:43,916 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 4 SyntacticMatches, 1 SemanticMatches, 37 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 259 ImplicationChecksByTransitivity, 1.5s TimeCoverageRelationStatistics Valid=371, Invalid=1111, Unknown=0, NotChecked=0, Total=1482 [2020-07-07 13:25:43,916 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 176 states. [2020-07-07 13:25:43,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 176 to 117. [2020-07-07 13:25:43,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 117 states. [2020-07-07 13:25:43,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 117 states to 117 states and 124 transitions. [2020-07-07 13:25:43,936 INFO L78 Accepts]: Start accepts. Automaton has 117 states and 124 transitions. Word has length 53 [2020-07-07 13:25:43,937 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:43,937 INFO L479 AbstractCegarLoop]: Abstraction has 117 states and 124 transitions. [2020-07-07 13:25:43,937 INFO L480 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-07-07 13:25:43,937 INFO L276 IsEmpty]: Start isEmpty. Operand 117 states and 124 transitions. [2020-07-07 13:25:43,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2020-07-07 13:25:43,938 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:43,938 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 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] [2020-07-07 13:25:43,939 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-07-07 13:25:43,939 INFO L427 AbstractCegarLoop]: === Iteration 9 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION, mainErr2ASSERT_VIOLATIONERROR_FUNCTION, mainErr3ASSERT_VIOLATIONERROR_FUNCTION, mainErr1ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:43,939 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:43,939 INFO L82 PathProgramCache]: Analyzing trace with hash -2144912159, now seen corresponding path program 1 times [2020-07-07 13:25:43,940 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:43,940 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1649073632] [2020-07-07 13:25:43,940 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:43,957 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2020-07-07 13:25:43,958 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:442) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.acceleratedInterpolationCore(AcceleratedInterpolation.java:277) at de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.(AcceleratedInterpolation.java:184) 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) [2020-07-07 13:25:43,964 INFO L168 Benchmark]: Toolchain (without parser) took 11285.51 ms. Allocated memory was 140.5 MB in the beginning and 332.9 MB in the end (delta: 192.4 MB). Free memory was 101.3 MB in the beginning and 240.3 MB in the end (delta: -139.0 MB). Peak memory consumption was 53.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,965 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,966 INFO L168 Benchmark]: CACSL2BoogieTranslator took 611.42 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 171.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,967 INFO L168 Benchmark]: Boogie Preprocessor took 63.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 168.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,967 INFO L168 Benchmark]: RCFGBuilder took 674.94 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 116.9 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,968 INFO L168 Benchmark]: TraceAbstraction took 9931.16 ms. Allocated memory was 203.9 MB in the beginning and 332.9 MB in the end (delta: 129.0 MB). Free memory was 116.2 MB in the beginning and 240.3 MB in the end (delta: -124.1 MB). Peak memory consumption was 4.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:43,972 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 140.5 MB. Free memory was 120.6 MB in the beginning and 120.4 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 611.42 ms. Allocated memory was 140.5 MB in the beginning and 203.9 MB in the end (delta: 63.4 MB). Free memory was 101.1 MB in the beginning and 171.8 MB in the end (delta: -70.7 MB). Peak memory consumption was 25.4 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 63.07 ms. Allocated memory is still 203.9 MB. Free memory was 171.8 MB in the beginning and 168.4 MB in the end (delta: 3.4 MB). Peak memory consumption was 3.4 MB. Max. memory is 7.1 GB. * RCFGBuilder took 674.94 ms. Allocated memory is still 203.9 MB. Free memory was 168.4 MB in the beginning and 116.9 MB in the end (delta: 51.6 MB). Peak memory consumption was 51.6 MB. Max. memory is 7.1 GB. * TraceAbstraction took 9931.16 ms. Allocated memory was 203.9 MB in the beginning and 332.9 MB in the end (delta: 129.0 MB). Free memory was 116.2 MB in the beginning and 240.3 MB in the end (delta: -124.1 MB). Peak memory consumption was 4.9 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:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...