/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-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:23:20,256 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:23:20,259 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:23:20,272 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:23:20,272 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:23:20,273 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:23:20,275 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:23:20,277 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:23:20,279 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:23:20,280 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:23:20,281 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:23:20,282 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:23:20,282 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:23:20,283 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:23:20,284 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:23:20,285 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:23:20,286 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:23:20,287 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:23:20,289 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:23:20,291 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:23:20,293 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:23:20,295 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:23:20,296 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:23:20,297 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:23:20,300 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:23:20,300 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:23:20,300 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:23:20,301 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:23:20,302 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:23:20,303 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:23:20,303 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:23:20,304 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:23:20,305 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:23:20,306 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:23:20,307 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:23:20,307 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:23:20,308 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:23:20,308 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:23:20,308 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:23:20,309 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:23:20,310 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:23:20,311 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 13:23:20,321 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:23:20,321 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:23:20,323 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:23:20,323 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:23:20,323 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:23:20,324 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:23:20,324 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:23:20,324 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:23:20,324 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:23:20,324 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:23:20,325 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:23:20,325 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:23:20,325 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:23:20,325 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:23:20,325 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:23:20,326 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:23:20,326 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:23:20,326 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:23:20,326 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:23:20,327 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:23:20,327 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:23:20,327 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:23:20,327 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:23:20,630 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:23:20,643 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:23:20,647 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:23:20,649 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:23:20,650 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:23:20,650 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-07-07 13:23:20,733 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb29b8069/e9d787f4cc4941f8af5ae61c03795c4d/FLAG0fc637d82 [2020-07-07 13:23:21,346 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:23:21,347 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/splice-1.i [2020-07-07 13:23:21,375 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb29b8069/e9d787f4cc4941f8af5ae61c03795c4d/FLAG0fc637d82 [2020-07-07 13:23:21,578 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/fb29b8069/e9d787f4cc4941f8af5ae61c03795c4d [2020-07-07 13:23:21,589 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:23:21,592 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:23:21,593 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:21,593 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:23:21,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:23:21,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:21" (1/1) ... [2020-07-07 13:23:21,602 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5250d0bb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:21, skipping insertion in model container [2020-07-07 13:23:21,602 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:23:21" (1/1) ... [2020-07-07 13:23:21,610 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:23:21,649 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:23:22,112 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:22,131 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:23:22,200 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:23:22,253 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:23:22,254 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22 WrapperNode [2020-07-07 13:23:22,254 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:23:22,255 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:23:22,256 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:23:22,256 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:23:22,271 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,271 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,295 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,295 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,314 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,325 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (1/1) ... [2020-07-07 13:23:22,332 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:23:22,332 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:23:22,332 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:23:22,333 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:23:22,334 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (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 13:23:22,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:23:22,400 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:23:22,401 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:23:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:23:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:23:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:23:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:23:22,402 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:23:22,403 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-07 13:23:22,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:23:22,405 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:23:22,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:23:22,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:23:22,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:23:22,409 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:23:22,410 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:23:22,411 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:23:22,412 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:23:22,413 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:23:22,414 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:23:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:23:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:23:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:23:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:23:22,415 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:23:22,416 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:23:22,417 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:23:22,418 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:23:22,419 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:23:22,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:23:22,794 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:23:23,019 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:23:23,019 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-07-07 13:23:23,024 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:23 BoogieIcfgContainer [2020-07-07 13:23:23,024 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:23:23,025 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:23:23,026 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:23:23,029 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:23:23,029 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:23:21" (1/3) ... [2020-07-07 13:23:23,030 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1222393c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:23, skipping insertion in model container [2020-07-07 13:23:23,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:23:22" (2/3) ... [2020-07-07 13:23:23,031 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@1222393c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:23:23, skipping insertion in model container [2020-07-07 13:23:23,031 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:23:23" (3/3) ... [2020-07-07 13:23:23,033 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-07-07 13:23:23,045 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:23:23,055 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:23:23,071 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:23:23,096 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:23:23,097 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:23:23,097 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:23:23,098 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:23:23,099 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:23:23,099 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:23:23,099 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:23:23,099 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:23:23,117 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-07-07 13:23:23,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-07-07 13:23:23,128 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:23,129 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] [2020-07-07 13:23:23,130 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:23,135 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:23,135 INFO L82 PathProgramCache]: Analyzing trace with hash 570656219, now seen corresponding path program 1 times [2020-07-07 13:23:23,143 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:23,144 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [299307943] [2020-07-07 13:23:23,144 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:23,280 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:23,388 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:23,406 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 13:23:23,407 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:23,414 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [299307943] [2020-07-07 13:23:23,417 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:23,417 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:23:23,418 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [579185217] [2020-07-07 13:23:23,424 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:23:23,424 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:23,440 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:23:23,441 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:23:23,444 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-07-07 13:23:23,686 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:23,686 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2020-07-07 13:23:23,687 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:23:23,688 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-07-07 13:23:23,689 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:23,699 INFO L225 Difference]: With dead ends: 138 [2020-07-07 13:23:23,699 INFO L226 Difference]: Without dead ends: 76 [2020-07-07 13:23:23,703 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 13:23:23,724 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-07-07 13:23:23,748 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-07-07 13:23:23,749 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-07-07 13:23:23,751 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-07-07 13:23:23,753 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 33 [2020-07-07 13:23:23,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:23,754 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-07-07 13:23:23,754 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:23:23,754 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-07-07 13:23:23,756 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-07-07 13:23:23,757 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:23,757 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] [2020-07-07 13:23:23,757 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:23:23,758 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:23,758 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:23,758 INFO L82 PathProgramCache]: Analyzing trace with hash -1726039966, now seen corresponding path program 1 times [2020-07-07 13:23:23,758 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:23,759 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1616814932] [2020-07-07 13:23:23,759 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:23,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:23,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:23,906 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 13:23:23,906 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:23,907 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1616814932] [2020-07-07 13:23:23,908 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:23,909 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-07-07 13:23:23,909 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1402724615] [2020-07-07 13:23:23,910 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-07-07 13:23:23,910 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:23,911 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-07-07 13:23:23,911 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:23,911 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2020-07-07 13:23:24,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:24,189 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-07-07 13:23:24,191 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:23:24,191 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-07-07 13:23:24,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:24,193 INFO L225 Difference]: With dead ends: 142 [2020-07-07 13:23:24,194 INFO L226 Difference]: Without dead ends: 98 [2020-07-07 13:23:24,197 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-07-07 13:23:24,198 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-07-07 13:23:24,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-07-07 13:23:24,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-07-07 13:23:24,225 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-07-07 13:23:24,226 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 37 [2020-07-07 13:23:24,226 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:24,226 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-07-07 13:23:24,226 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-07-07 13:23:24,227 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-07-07 13:23:24,233 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-07-07 13:23:24,234 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:24,234 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:24,234 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:23:24,234 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:24,235 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:24,235 INFO L82 PathProgramCache]: Analyzing trace with hash 294194033, now seen corresponding path program 1 times [2020-07-07 13:23:24,236 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:24,236 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2128299476] [2020-07-07 13:23:24,237 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:24,380 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:24,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:24,497 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 13:23:24,498 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:24,498 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2128299476] [2020-07-07 13:23:24,499 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:24,499 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:23:24,499 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1894492523] [2020-07-07 13:23:24,499 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:23:24,500 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:24,500 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:23:24,500 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:23:24,500 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 5 states. [2020-07-07 13:23:24,680 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:24,680 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-07-07 13:23:24,680 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:23:24,681 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-07-07 13:23:24,681 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:24,682 INFO L225 Difference]: With dead ends: 124 [2020-07-07 13:23:24,683 INFO L226 Difference]: Without dead ends: 105 [2020-07-07 13:23:24,683 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:24,684 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-07-07 13:23:24,695 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2020-07-07 13:23:24,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-07-07 13:23:24,697 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-07-07 13:23:24,697 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 50 [2020-07-07 13:23:24,698 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:24,698 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-07-07 13:23:24,698 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:23:24,698 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-07-07 13:23:24,699 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-07-07 13:23:24,700 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:24,700 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:24,700 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:23:24,700 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:24,701 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:24,701 INFO L82 PathProgramCache]: Analyzing trace with hash -2102515392, now seen corresponding path program 1 times [2020-07-07 13:23:24,701 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:24,702 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1950167655] [2020-07-07 13:23:24,702 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:24,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:24,792 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:23:24,801 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 13:23:24,802 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:23:24,802 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1950167655] [2020-07-07 13:23:24,802 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:23:24,802 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:23:24,803 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [783479304] [2020-07-07 13:23:24,803 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:23:24,804 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:23:24,804 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:23:24,804 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:23:24,805 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 5 states. [2020-07-07 13:23:25,000 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:23:25,000 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-07-07 13:23:25,001 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-07-07 13:23:25,001 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-07-07 13:23:25,002 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:23:25,003 INFO L225 Difference]: With dead ends: 142 [2020-07-07 13:23:25,003 INFO L226 Difference]: Without dead ends: 127 [2020-07-07 13:23:25,004 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-07-07 13:23:25,004 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-07-07 13:23:25,017 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2020-07-07 13:23:25,018 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-07-07 13:23:25,019 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-07-07 13:23:25,019 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 52 [2020-07-07 13:23:25,020 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:23:25,020 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-07-07 13:23:25,020 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:23:25,020 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-07-07 13:23:25,022 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-07-07 13:23:25,022 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:23:25,022 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, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:23:25,023 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:23:25,023 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:23:25,023 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:23:25,024 INFO L82 PathProgramCache]: Analyzing trace with hash -1840938300, now seen corresponding path program 1 times [2020-07-07 13:23:25,024 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:23:25,024 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [442651990] [2020-07-07 13:23:25,024 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:23:25,035 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-07-07 13:23:25,036 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 13:23:25,042 INFO L168 Benchmark]: Toolchain (without parser) took 3450.00 ms. Allocated memory was 142.6 MB in the beginning and 253.2 MB in the end (delta: 110.6 MB). Free memory was 98.2 MB in the beginning and 210.0 MB in the end (delta: -111.8 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:23:25,043 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 142.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-07-07 13:23:25,044 INFO L168 Benchmark]: CACSL2BoogieTranslator took 661.62 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 98.0 MB in the beginning and 167.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:25,045 INFO L168 Benchmark]: Boogie Preprocessor took 76.49 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 163.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:25,046 INFO L168 Benchmark]: RCFGBuilder took 692.02 ms. Allocated memory is still 200.3 MB. Free memory was 163.7 MB in the beginning and 112.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-07-07 13:23:25,047 INFO L168 Benchmark]: TraceAbstraction took 2013.96 ms. Allocated memory was 200.3 MB in the beginning and 253.2 MB in the end (delta: 53.0 MB). Free memory was 112.4 MB in the beginning and 210.0 MB in the end (delta: -97.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-07-07 13:23:25,051 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 142.6 MB. Free memory was 117.9 MB in the beginning and 117.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 661.62 ms. Allocated memory was 142.6 MB in the beginning and 200.3 MB in the end (delta: 57.7 MB). Free memory was 98.0 MB in the beginning and 167.1 MB in the end (delta: -69.1 MB). Peak memory consumption was 22.1 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 76.49 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 163.7 MB in the end (delta: 3.5 MB). Peak memory consumption was 3.5 MB. Max. memory is 7.1 GB. * RCFGBuilder took 692.02 ms. Allocated memory is still 200.3 MB. Free memory was 163.7 MB in the beginning and 112.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2013.96 ms. Allocated memory was 200.3 MB in the beginning and 253.2 MB in the end (delta: 53.0 MB). Free memory was 112.4 MB in the beginning and 210.0 MB in the end (delta: -97.6 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - ExceptionOrErrorResult: NullPointerException: null de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: NullPointerException: null: de.uni_freiburg.informatik.ultimate.lib.acceleratedinterpolation.AcceleratedInterpolation.generateMetaTrace(AcceleratedInterpolation.java:442) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request...