/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-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-86f66a4 [2020-07-07 13:25:35,276 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-07-07 13:25:35,278 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-07-07 13:25:35,291 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-07-07 13:25:35,291 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-07-07 13:25:35,292 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-07-07 13:25:35,293 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-07-07 13:25:35,295 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-07-07 13:25:35,297 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-07-07 13:25:35,298 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-07-07 13:25:35,299 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-07-07 13:25:35,300 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-07-07 13:25:35,300 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-07-07 13:25:35,302 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-07-07 13:25:35,303 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-07-07 13:25:35,304 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-07-07 13:25:35,305 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-07-07 13:25:35,305 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-07-07 13:25:35,307 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-07-07 13:25:35,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-07-07 13:25:35,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-07-07 13:25:35,311 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-07-07 13:25:35,313 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-07-07 13:25:35,313 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-07-07 13:25:35,316 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-07-07 13:25:35,316 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-07-07 13:25:35,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-07-07 13:25:35,317 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-07-07 13:25:35,318 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-07-07 13:25:35,319 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-07-07 13:25:35,319 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-07-07 13:25:35,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-07-07 13:25:35,320 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-07-07 13:25:35,321 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-07-07 13:25:35,322 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-07-07 13:25:35,322 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-07-07 13:25:35,323 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-07-07 13:25:35,323 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-07-07 13:25:35,323 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-07-07 13:25:35,324 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-07-07 13:25:35,325 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-07-07 13:25:35,326 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 13:25:35,335 INFO L113 SettingsManager]: Loading preferences was successful [2020-07-07 13:25:35,335 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-07-07 13:25:35,336 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-07-07 13:25:35,336 INFO L138 SettingsManager]: * sizeof long=4 [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-07-07 13:25:35,337 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-07-07 13:25:35,338 INFO L138 SettingsManager]: * sizeof long double=12 [2020-07-07 13:25:35,338 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-07-07 13:25:35,338 INFO L138 SettingsManager]: * Use constant arrays=true [2020-07-07 13:25:35,338 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-07-07 13:25:35,338 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-07-07 13:25:35,339 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-07-07 13:25:35,339 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-07-07 13:25:35,339 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-07-07 13:25:35,339 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-07-07 13:25:35,339 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-07-07 13:25:35,340 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-07-07 13:25:35,340 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-07-07 13:25:35,340 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-07-07 13:25:35,631 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2020-07-07 13:25:35,653 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-07-07 13:25:35,658 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-07-07 13:25:35,659 INFO L271 PluginConnector]: Initializing CDTParser... [2020-07-07 13:25:35,660 INFO L275 PluginConnector]: CDTParser initialized [2020-07-07 13:25:35,661 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-07-07 13:25:35,739 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b53f4054/31fcf2d4c6d44bb38d6239c791960afc/FLAG74e476f15 [2020-07-07 13:25:36,266 INFO L306 CDTParser]: Found 1 translation units. [2020-07-07 13:25:36,267 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i [2020-07-07 13:25:36,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b53f4054/31fcf2d4c6d44bb38d6239c791960afc/FLAG74e476f15 [2020-07-07 13:25:36,593 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/5b53f4054/31fcf2d4c6d44bb38d6239c791960afc [2020-07-07 13:25:36,605 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-07-07 13:25:36,606 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-07-07 13:25:36,609 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:36,610 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-07-07 13:25:36,613 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-07-07 13:25:36,614 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:36" (1/1) ... [2020-07-07 13:25:36,617 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4e9e709a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:36, skipping insertion in model container [2020-07-07 13:25:36,617 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 07.07 01:25:36" (1/1) ... [2020-07-07 13:25:36,624 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-07-07 13:25:36,681 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-07-07 13:25:37,150 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:37,164 INFO L203 MainTranslator]: Completed pre-run [2020-07-07 13:25:37,225 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-07-07 13:25:37,282 INFO L208 MainTranslator]: Completed translation [2020-07-07 13:25:37,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37 WrapperNode [2020-07-07 13:25:37,282 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-07-07 13:25:37,283 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-07-07 13:25:37,283 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-07-07 13:25:37,283 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-07-07 13:25:37,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,314 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,315 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,333 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,340 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,343 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (1/1) ... [2020-07-07 13:25:37,350 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-07-07 13:25:37,351 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-07-07 13:25:37,351 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-07-07 13:25:37,351 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-07-07 13:25:37,352 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (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 13:25:37,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-07-07 13:25:37,427 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-07-07 13:25:37,427 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-07-07 13:25:37,428 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-07-07 13:25:37,429 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-07-07 13:25:37,430 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-07-07 13:25:37,431 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-07-07 13:25:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-07-07 13:25:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-07-07 13:25:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-07-07 13:25:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-07-07 13:25:37,432 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-07-07 13:25:37,433 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-07-07 13:25:37,434 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-07-07 13:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-07-07 13:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-07-07 13:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-07-07 13:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-07-07 13:25:37,435 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-07-07 13:25:37,436 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-07-07 13:25:37,437 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-07-07 13:25:37,438 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-07-07 13:25:37,439 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-07-07 13:25:37,440 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-07-07 13:25:37,441 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-07-07 13:25:37,442 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-07-07 13:25:37,443 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-07-07 13:25:37,444 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-07-07 13:25:37,445 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-07-07 13:25:37,446 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-07-07 13:25:37,447 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-07-07 13:25:37,824 INFO L728 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-07-07 13:25:38,092 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-07-07 13:25:38,093 INFO L295 CfgBuilder]: Removed 5 assume(true) statements. [2020-07-07 13:25:38,097 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:38 BoogieIcfgContainer [2020-07-07 13:25:38,098 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-07-07 13:25:38,099 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-07-07 13:25:38,099 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-07-07 13:25:38,102 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-07-07 13:25:38,102 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 07.07 01:25:36" (1/3) ... [2020-07-07 13:25:38,103 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d61869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:38, skipping insertion in model container [2020-07-07 13:25:38,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 07.07 01:25:37" (2/3) ... [2020-07-07 13:25:38,104 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@10d61869 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 07.07 01:25:38, skipping insertion in model container [2020-07-07 13:25:38,104 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 07.07 01:25:38" (3/3) ... [2020-07-07 13:25:38,106 INFO L109 eAbstractionObserver]: Analyzing ICFG list-ext.i [2020-07-07 13:25:38,117 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-07-07 13:25:38,125 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-07-07 13:25:38,140 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-07-07 13:25:38,163 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-07-07 13:25:38,163 INFO L376 AbstractCegarLoop]: Hoare is true [2020-07-07 13:25:38,164 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-07-07 13:25:38,164 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-07-07 13:25:38,164 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-07-07 13:25:38,164 INFO L380 AbstractCegarLoop]: Difference is false [2020-07-07 13:25:38,165 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-07-07 13:25:38,165 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-07-07 13:25:38,183 INFO L276 IsEmpty]: Start isEmpty. Operand 106 states. [2020-07-07 13:25:38,196 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2020-07-07 13:25:38,196 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:38,197 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 13:25:38,198 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:38,204 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:38,205 INFO L82 PathProgramCache]: Analyzing trace with hash 450995297, now seen corresponding path program 1 times [2020-07-07 13:25:38,214 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:38,214 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1867322052] [2020-07-07 13:25:38,215 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:38,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,420 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 13:25:38,420 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:38,422 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1867322052] [2020-07-07 13:25:38,425 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:38,425 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-07-07 13:25:38,425 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1971456005] [2020-07-07 13:25:38,431 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-07-07 13:25:38,431 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:38,446 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-07-07 13:25:38,447 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-07-07 13:25:38,449 INFO L87 Difference]: Start difference. First operand 106 states. Second operand 3 states. [2020-07-07 13:25:38,726 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:38,726 INFO L93 Difference]: Finished difference Result 176 states and 201 transitions. [2020-07-07 13:25:38,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-07-07 13:25:38,728 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 27 [2020-07-07 13:25:38,729 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:38,739 INFO L225 Difference]: With dead ends: 176 [2020-07-07 13:25:38,739 INFO L226 Difference]: Without dead ends: 84 [2020-07-07 13:25:38,744 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 13:25:38,764 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2020-07-07 13:25:38,791 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2020-07-07 13:25:38,793 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 84 states. [2020-07-07 13:25:38,795 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 89 transitions. [2020-07-07 13:25:38,797 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 89 transitions. Word has length 27 [2020-07-07 13:25:38,797 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:38,798 INFO L479 AbstractCegarLoop]: Abstraction has 84 states and 89 transitions. [2020-07-07 13:25:38,798 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-07-07 13:25:38,798 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 89 transitions. [2020-07-07 13:25:38,800 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2020-07-07 13:25:38,800 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:38,800 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:38,801 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-07-07 13:25:38,801 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:38,801 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:38,802 INFO L82 PathProgramCache]: Analyzing trace with hash 797319425, now seen corresponding path program 1 times [2020-07-07 13:25:38,802 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:38,802 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2107603851] [2020-07-07 13:25:38,802 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:38,842 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,923 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:38,931 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 13:25:38,931 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:38,932 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [2107603851] [2020-07-07 13:25:38,932 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:38,932 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:38,932 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1604584170] [2020-07-07 13:25:38,933 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:38,934 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:38,934 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:38,934 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:38,934 INFO L87 Difference]: Start difference. First operand 84 states and 89 transitions. Second operand 5 states. [2020-07-07 13:25:39,151 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:39,152 INFO L93 Difference]: Finished difference Result 209 states and 224 transitions. [2020-07-07 13:25:39,152 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:39,152 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 39 [2020-07-07 13:25:39,153 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:39,155 INFO L225 Difference]: With dead ends: 209 [2020-07-07 13:25:39,155 INFO L226 Difference]: Without dead ends: 139 [2020-07-07 13:25:39,157 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:39,158 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 139 states. [2020-07-07 13:25:39,170 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 139 to 86. [2020-07-07 13:25:39,170 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 86 states. [2020-07-07 13:25:39,172 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 91 transitions. [2020-07-07 13:25:39,172 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 91 transitions. Word has length 39 [2020-07-07 13:25:39,172 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:39,173 INFO L479 AbstractCegarLoop]: Abstraction has 86 states and 91 transitions. [2020-07-07 13:25:39,173 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:39,173 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 91 transitions. [2020-07-07 13:25:39,174 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2020-07-07 13:25:39,174 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:39,175 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:39,175 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-07-07 13:25:39,175 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:39,175 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:39,176 INFO L82 PathProgramCache]: Analyzing trace with hash 1111510308, now seen corresponding path program 1 times [2020-07-07 13:25:39,176 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:39,176 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [341932454] [2020-07-07 13:25:39,176 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:39,196 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,246 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-07-07 13:25:39,253 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 13:25:39,253 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:39,254 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [341932454] [2020-07-07 13:25:39,254 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-07-07 13:25:39,254 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-07-07 13:25:39,254 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [616226835] [2020-07-07 13:25:39,255 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-07-07 13:25:39,255 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-07-07 13:25:39,255 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-07-07 13:25:39,256 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-07-07 13:25:39,256 INFO L87 Difference]: Start difference. First operand 86 states and 91 transitions. Second operand 5 states. [2020-07-07 13:25:39,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-07-07 13:25:39,422 INFO L93 Difference]: Finished difference Result 162 states and 172 transitions. [2020-07-07 13:25:39,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-07-07 13:25:39,423 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 41 [2020-07-07 13:25:39,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-07-07 13:25:39,424 INFO L225 Difference]: With dead ends: 162 [2020-07-07 13:25:39,424 INFO L226 Difference]: Without dead ends: 112 [2020-07-07 13:25:39,425 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2020-07-07 13:25:39,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2020-07-07 13:25:39,436 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 88. [2020-07-07 13:25:39,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 88 states. [2020-07-07 13:25:39,438 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 93 transitions. [2020-07-07 13:25:39,438 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 93 transitions. Word has length 41 [2020-07-07 13:25:39,438 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-07-07 13:25:39,439 INFO L479 AbstractCegarLoop]: Abstraction has 88 states and 93 transitions. [2020-07-07 13:25:39,439 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-07-07 13:25:39,439 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 93 transitions. [2020-07-07 13:25:39,440 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-07-07 13:25:39,440 INFO L414 BasicCegarLoop]: Found error trace [2020-07-07 13:25:39,441 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-07-07 13:25:39,441 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-07-07 13:25:39,441 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-07-07 13:25:39,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-07-07 13:25:39,441 INFO L82 PathProgramCache]: Analyzing trace with hash 1931735873, now seen corresponding path program 1 times [2020-07-07 13:25:39,442 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-07-07 13:25:39,442 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [2122926641] [2020-07-07 13:25:39,442 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-07-07 13:25:39,467 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:39,487 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-07-07 13:25:39,537 INFO L185 leratedInterpolation]: Finished Analysing Program using PRECISE loop Acceleration [2020-07-07 13:25:39,537 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-07-07 13:25:39,537 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-07-07 13:25:39,538 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-07-07 13:25:39,572 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 07.07 01:25:39 BoogieIcfgContainer [2020-07-07 13:25:39,572 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-07-07 13:25:39,576 INFO L168 Benchmark]: Toolchain (without parser) took 2967.63 ms. Allocated memory was 140.0 MB in the beginning and 227.0 MB in the end (delta: 87.0 MB). Free memory was 98.6 MB in the beginning and 96.8 MB in the end (delta: 1.7 MB). Peak memory consumption was 88.8 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,577 INFO L168 Benchmark]: CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,580 INFO L168 Benchmark]: CACSL2BoogieTranslator took 673.33 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 98.4 MB in the beginning and 167.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,582 INFO L168 Benchmark]: Boogie Preprocessor took 67.39 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 164.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,583 INFO L168 Benchmark]: RCFGBuilder took 746.90 ms. Allocated memory is still 200.3 MB. Free memory was 164.2 MB in the beginning and 109.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,590 INFO L168 Benchmark]: TraceAbstraction took 1473.27 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 109.0 MB in the beginning and 96.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. [2020-07-07 13:25:39,602 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32 ms. Allocated memory is still 140.0 MB. Free memory was 118.3 MB in the beginning and 118.1 MB in the end (delta: 210.1 kB). Peak memory consumption was 210.1 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 673.33 ms. Allocated memory was 140.0 MB in the beginning and 200.3 MB in the end (delta: 60.3 MB). Free memory was 98.4 MB in the beginning and 167.1 MB in the end (delta: -68.7 MB). Peak memory consumption was 23.0 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 67.39 ms. Allocated memory is still 200.3 MB. Free memory was 167.1 MB in the beginning and 164.2 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 7.1 GB. * RCFGBuilder took 746.90 ms. Allocated memory is still 200.3 MB. Free memory was 164.2 MB in the beginning and 109.7 MB in the end (delta: 54.5 MB). Peak memory consumption was 54.5 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1473.27 ms. Allocated memory was 200.3 MB in the beginning and 227.0 MB in the end (delta: 26.7 MB). Free memory was 109.0 MB in the beginning and 96.8 MB in the end (delta: 12.2 MB). Peak memory consumption was 38.9 MB. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 557]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int i = 0; [L522] int y = 0; [L523] List a = (List) malloc(sizeof(struct node)); [L524] COND FALSE !(a == 0) [L525] List t; [L526] List p = a; [L527] i < 10 && __VERIFIER_nondet_int() [L527] i < 10 && __VERIFIER_nondet_int() [L527] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L535] y < 10 && __VERIFIER_nondet_int() [L535] y < 10 && __VERIFIER_nondet_int() [L535] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L543] p->h = 3 [L544] p->n = 0 [L545] i = 0 [L546] y = 0 [L547] p = a [L548] EXPR p->h [L548] COND FALSE !(p->h == 1) [L552] EXPR p->h [L552] COND FALSE !(p->h == 2) [L556] EXPR p->h [L556] COND TRUE p->h != 3 || (i + y) < 20 [L557] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 129 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.7s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 280 SDtfs, 125 SDslu, 272 SDs, 0 SdLazy, 315 SolverSat, 16 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 20 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=106occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 3 MinimizatonAttempts, 77 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: No data available, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...