/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.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/simple-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-36cd7be [2021-02-23 18:04:55,288 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-23 18:04:55,292 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-23 18:04:55,335 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-23 18:04:55,336 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-23 18:04:55,338 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-23 18:04:55,340 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-23 18:04:55,342 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-23 18:04:55,363 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-23 18:04:55,365 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-23 18:04:55,367 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-23 18:04:55,369 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-23 18:04:55,369 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-23 18:04:55,371 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-23 18:04:55,373 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-23 18:04:55,375 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-23 18:04:55,376 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-23 18:04:55,378 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-23 18:04:55,380 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-23 18:04:55,383 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-23 18:04:55,386 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-23 18:04:55,388 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-23 18:04:55,390 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-23 18:04:55,392 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-23 18:04:55,396 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-23 18:04:55,396 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-23 18:04:55,397 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-23 18:04:55,398 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-23 18:04:55,399 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-23 18:04:55,400 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-23 18:04:55,401 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-23 18:04:55,402 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-23 18:04:55,404 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-23 18:04:55,405 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-23 18:04:55,406 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-23 18:04:55,407 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-23 18:04:55,408 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-23 18:04:55,409 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-23 18:04:55,409 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-23 18:04:55,410 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-23 18:04:55,411 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-23 18:04:55,413 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2021-02-23 18:04:55,428 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-23 18:04:55,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-23 18:04:55,431 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-23 18:04:55,431 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-23 18:04:55,431 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-23 18:04:55,432 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-23 18:04:55,432 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-23 18:04:55,432 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-23 18:04:55,433 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-23 18:04:55,433 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-23 18:04:55,433 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-23 18:04:55,433 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-23 18:04:55,434 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-23 18:04:55,434 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-23 18:04:55,434 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-23 18:04:55,435 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2021-02-23 18:04:55,435 INFO L138 SettingsManager]: * To the following directory=./dump/ [2021-02-23 18:04:55,435 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-23 18:04:55,436 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-23 18:04:55,436 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-23 18:04:55,436 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2021-02-23 18:04:55,437 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-23 18:04:55,437 INFO L138 SettingsManager]: * Use separate solver for trace checks=false WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-23 18:04:55,898 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-23 18:04:55,954 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-23 18:04:55,959 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-23 18:04:55,961 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-23 18:04:55,962 INFO L275 PluginConnector]: CDTParser initialized [2021-02-23 18:04:55,964 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/simple-1.i [2021-02-23 18:04:56,075 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76fdeb5b/a4e90956acf747feaf05f637dc20eeef/FLAGc240a4c00 [2021-02-23 18:04:56,911 INFO L306 CDTParser]: Found 1 translation units. [2021-02-23 18:04:56,912 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i [2021-02-23 18:04:56,941 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76fdeb5b/a4e90956acf747feaf05f637dc20eeef/FLAGc240a4c00 [2021-02-23 18:04:57,196 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a76fdeb5b/a4e90956acf747feaf05f637dc20eeef [2021-02-23 18:04:57,200 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-23 18:04:57,215 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-23 18:04:57,220 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:57,220 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-23 18:04:57,224 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-23 18:04:57,225 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:57" (1/1) ... [2021-02-23 18:04:57,227 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@196160e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:57, skipping insertion in model container [2021-02-23 18:04:57,228 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.02 06:04:57" (1/1) ... [2021-02-23 18:04:57,238 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-23 18:04:57,316 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-23 18:04:57,916 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-23 18:04:57,921 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:57,936 INFO L203 MainTranslator]: Completed pre-run [2021-02-23 18:04:57,980 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-properties/simple-1.i[23237,23250] [2021-02-23 18:04:57,982 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-23 18:04:58,064 INFO L208 MainTranslator]: Completed translation [2021-02-23 18:04:58,065 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58 WrapperNode [2021-02-23 18:04:58,065 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-23 18:04:58,067 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-23 18:04:58,068 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-23 18:04:58,068 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-23 18:04:58,084 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,086 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,131 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,132 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,161 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,167 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,172 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (1/1) ... [2021-02-23 18:04:58,179 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-23 18:04:58,181 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-23 18:04:58,181 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-23 18:04:58,181 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-23 18:04:58,183 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (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 [2021-02-23 18:04:58,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-23 18:04:58,350 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-23 18:04:58,350 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-23 18:04:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-23 18:04:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-23 18:04:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-23 18:04:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-23 18:04:58,351 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-23 18:04:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-23 18:04:58,352 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-23 18:04:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-23 18:04:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-23 18:04:58,352 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-23 18:04:58,353 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-23 18:04:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-23 18:04:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-23 18:04:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-23 18:04:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-23 18:04:58,354 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-23 18:04:58,355 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-23 18:04:58,356 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-23 18:04:58,357 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-23 18:04:58,358 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-23 18:04:58,359 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-23 18:04:58,360 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-23 18:04:58,361 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-23 18:04:58,362 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-23 18:04:58,363 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-23 18:04:58,364 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-23 18:04:58,365 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-23 18:04:58,366 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-23 18:04:58,367 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-23 18:04:58,368 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-23 18:04:58,369 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-23 18:04:58,370 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-23 18:04:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-23 18:04:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-23 18:04:58,371 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-23 18:04:58,862 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-23 18:04:59,055 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-23 18:04:59,055 INFO L299 CfgBuilder]: Removed 2 assume(true) statements. [2021-02-23 18:04:59,058 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:59 BoogieIcfgContainer [2021-02-23 18:04:59,058 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-23 18:04:59,060 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-23 18:04:59,060 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-23 18:04:59,065 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-23 18:04:59,065 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.02 06:04:57" (1/3) ... [2021-02-23 18:04:59,066 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257c5ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:59, skipping insertion in model container [2021-02-23 18:04:59,066 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.02 06:04:58" (2/3) ... [2021-02-23 18:04:59,067 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@257c5ed3 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.02 06:04:59, skipping insertion in model container [2021-02-23 18:04:59,067 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.02 06:04:59" (3/3) ... [2021-02-23 18:04:59,069 INFO L111 eAbstractionObserver]: Analyzing ICFG simple-1.i [2021-02-23 18:04:59,078 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2021-02-23 18:04:59,086 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-23 18:04:59,107 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-23 18:04:59,135 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-23 18:04:59,136 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-23 18:04:59,136 INFO L378 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2021-02-23 18:04:59,136 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-23 18:04:59,136 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-23 18:04:59,136 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-23 18:04:59,137 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-23 18:04:59,137 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-23 18:04:59,155 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states. [2021-02-23 18:04:59,167 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-02-23 18:04:59,167 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:59,169 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] [2021-02-23 18:04:59,169 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:59,177 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:59,177 INFO L82 PathProgramCache]: Analyzing trace with hash -464779914, now seen corresponding path program 1 times [2021-02-23 18:04:59,189 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:59,189 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1817531461] [2021-02-23 18:04:59,190 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:59,298 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:04:59,356 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,422 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,424 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,426 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,427 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,474 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:04:59,480 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:04:59,494 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:04:59,495 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:04:59,504 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:04:59,506 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1817531461] [2021-02-23 18:04:59,532 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:04:59,532 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-23 18:04:59,533 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1596720172] [2021-02-23 18:04:59,538 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-23 18:04:59,539 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:04:59,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-23 18:04:59,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-23 18:04:59,560 INFO L87 Difference]: Start difference. First operand 52 states. Second operand 3 states. [2021-02-23 18:04:59,774 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:04:59,775 INFO L93 Difference]: Finished difference Result 70 states and 78 transitions. [2021-02-23 18:04:59,776 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-23 18:04:59,779 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2021-02-23 18:04:59,781 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:04:59,791 INFO L225 Difference]: With dead ends: 70 [2021-02-23 18:04:59,792 INFO L226 Difference]: Without dead ends: 42 [2021-02-23 18:04:59,798 INFO L677 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 [2021-02-23 18:04:59,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 42 states. [2021-02-23 18:04:59,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 42 to 42. [2021-02-23 18:04:59,869 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 42 states. [2021-02-23 18:04:59,875 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 42 states to 42 states and 43 transitions. [2021-02-23 18:04:59,878 INFO L78 Accepts]: Start accepts. Automaton has 42 states and 43 transitions. Word has length 26 [2021-02-23 18:04:59,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:04:59,880 INFO L480 AbstractCegarLoop]: Abstraction has 42 states and 43 transitions. [2021-02-23 18:04:59,880 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-23 18:04:59,880 INFO L276 IsEmpty]: Start isEmpty. Operand 42 states and 43 transitions. [2021-02-23 18:04:59,884 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-02-23 18:04:59,884 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:04:59,884 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] [2021-02-23 18:04:59,885 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-23 18:04:59,886 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:04:59,887 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:04:59,888 INFO L82 PathProgramCache]: Analyzing trace with hash -224928320, now seen corresponding path program 1 times [2021-02-23 18:04:59,891 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:04:59,893 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [939549667] [2021-02-23 18:04:59,894 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:04:59,916 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:00,008 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:00,151 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,153 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:00,168 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,172 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:00,188 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,191 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 14 [2021-02-23 18:05:00,215 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,216 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:00,229 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,230 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:00,246 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,247 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:00,262 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,263 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:00,309 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:00,314 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:00,325 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,326 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:00,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:00,332 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [939549667] [2021-02-23 18:05:00,332 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:00,333 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-02-23 18:05:00,333 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1272728758] [2021-02-23 18:05:00,334 INFO L460 AbstractCegarLoop]: Interpolant automaton has 8 states [2021-02-23 18:05:00,334 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:00,335 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-02-23 18:05:00,336 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-02-23 18:05:00,336 INFO L87 Difference]: Start difference. First operand 42 states and 43 transitions. Second operand 8 states. [2021-02-23 18:05:00,705 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:00,706 INFO L93 Difference]: Finished difference Result 84 states and 86 transitions. [2021-02-23 18:05:00,706 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-02-23 18:05:00,707 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 28 [2021-02-23 18:05:00,707 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:00,709 INFO L225 Difference]: With dead ends: 84 [2021-02-23 18:05:00,709 INFO L226 Difference]: Without dead ends: 81 [2021-02-23 18:05:00,711 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-02-23 18:05:00,712 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 81 states. [2021-02-23 18:05:00,724 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 81 to 51. [2021-02-23 18:05:00,725 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2021-02-23 18:05:00,726 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 53 transitions. [2021-02-23 18:05:00,727 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 53 transitions. Word has length 28 [2021-02-23 18:05:00,727 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:00,727 INFO L480 AbstractCegarLoop]: Abstraction has 51 states and 53 transitions. [2021-02-23 18:05:00,727 INFO L481 AbstractCegarLoop]: Interpolant automaton has 8 states. [2021-02-23 18:05:00,727 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 53 transitions. [2021-02-23 18:05:00,729 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-02-23 18:05:00,729 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:00,729 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] [2021-02-23 18:05:00,730 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-23 18:05:00,730 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:00,730 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:00,731 INFO L82 PathProgramCache]: Analyzing trace with hash 1235598545, now seen corresponding path program 1 times [2021-02-23 18:05:00,731 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:00,731 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1844576274] [2021-02-23 18:05:00,731 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:00,767 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:00,772 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:00,801 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:00,863 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,864 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:00,865 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,866 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:00,873 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,874 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-23 18:05:00,882 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,883 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 10 [2021-02-23 18:05:00,902 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,903 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 18 [2021-02-23 18:05:00,928 WARN L141 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size [2021-02-23 18:05:00,930 WARN L147 QuantifierPusher]: treesize reduction 10, result has 68.8 percent of original size 22 [2021-02-23 18:05:00,954 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,955 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:00,975 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,977 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 7 [2021-02-23 18:05:00,998 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:00,999 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:01,048 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-23 18:05:01,052 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-23 18:05:01,059 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-23 18:05:01,060 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-23 18:05:01,066 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-23 18:05:01,066 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1844576274] [2021-02-23 18:05:01,066 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-23 18:05:01,067 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2021-02-23 18:05:01,067 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1275990960] [2021-02-23 18:05:01,067 INFO L460 AbstractCegarLoop]: Interpolant automaton has 10 states [2021-02-23 18:05:01,068 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2021-02-23 18:05:01,068 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-02-23 18:05:01,069 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-02-23 18:05:01,069 INFO L87 Difference]: Start difference. First operand 51 states and 53 transitions. Second operand 10 states. [2021-02-23 18:05:01,628 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-23 18:05:01,629 INFO L93 Difference]: Finished difference Result 83 states and 85 transitions. [2021-02-23 18:05:01,630 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-02-23 18:05:01,630 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 35 [2021-02-23 18:05:01,631 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-23 18:05:01,632 INFO L225 Difference]: With dead ends: 83 [2021-02-23 18:05:01,632 INFO L226 Difference]: Without dead ends: 61 [2021-02-23 18:05:01,633 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 17 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=175, Unknown=0, NotChecked=0, Total=240 [2021-02-23 18:05:01,634 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 61 states. [2021-02-23 18:05:01,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 61 to 44. [2021-02-23 18:05:01,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 44 states. [2021-02-23 18:05:01,644 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 44 states to 44 states and 45 transitions. [2021-02-23 18:05:01,645 INFO L78 Accepts]: Start accepts. Automaton has 44 states and 45 transitions. Word has length 35 [2021-02-23 18:05:01,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-23 18:05:01,646 INFO L480 AbstractCegarLoop]: Abstraction has 44 states and 45 transitions. [2021-02-23 18:05:01,646 INFO L481 AbstractCegarLoop]: Interpolant automaton has 10 states. [2021-02-23 18:05:01,646 INFO L276 IsEmpty]: Start isEmpty. Operand 44 states and 45 transitions. [2021-02-23 18:05:01,647 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 40 [2021-02-23 18:05:01,648 INFO L414 BasicCegarLoop]: Found error trace [2021-02-23 18:05:01,648 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] [2021-02-23 18:05:01,648 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-23 18:05:01,648 INFO L428 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-23 18:05:01,649 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-23 18:05:01,649 INFO L82 PathProgramCache]: Analyzing trace with hash 1534875846, now seen corresponding path program 1 times [2021-02-23 18:05:01,650 INFO L162 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2021-02-23 18:05:01,650 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [875361322] [2021-02-23 18:05:01,650 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-23 18:05:01,683 INFO L84 AcceleratorFastUPR]: FastUPR could not accelerate loop because java.lang.UnsupportedOperationException: No Result found. [2021-02-23 18:05:01,688 INFO L218 tedInterpolationCore]: No loops in this trace, falling back to nested interpolation [2021-02-23 18:05:01,712 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:01,712 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:01,755 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-23 18:05:01,756 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-23 18:05:01,821 INFO L173 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2021-02-23 18:05:01,822 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-23 18:05:01,822 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-02-23 18:05:01,849 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.02 06:05:01 BoogieIcfgContainer [2021-02-23 18:05:01,849 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-23 18:05:01,853 INFO L168 Benchmark]: Toolchain (without parser) took 4647.46 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 127.8 MB in the beginning and 131.7 MB in the end (delta: -3.9 MB). Peak memory consumption was 46.8 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:01,854 INFO L168 Benchmark]: CDTParser took 0.35 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-23 18:05:01,861 INFO L168 Benchmark]: CACSL2BoogieTranslator took 845.87 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 105.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:01,862 INFO L168 Benchmark]: Boogie Preprocessor took 112.54 ms. Allocated memory is still 153.1 MB. Free memory was 105.1 MB in the beginning and 102.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:01,862 INFO L168 Benchmark]: RCFGBuilder took 877.24 ms. Allocated memory is still 153.1 MB. Free memory was 102.5 MB in the beginning and 93.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:01,867 INFO L168 Benchmark]: TraceAbstraction took 2789.20 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 93.1 MB in the beginning and 131.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. [2021-02-23 18:05:01,871 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.35 ms. Allocated memory is still 153.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 845.87 ms. Allocated memory is still 153.1 MB. Free memory was 126.6 MB in the beginning and 105.1 MB in the end (delta: 21.5 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 112.54 ms. Allocated memory is still 153.1 MB. Free memory was 105.1 MB in the beginning and 102.5 MB in the end (delta: 2.6 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 877.24 ms. Allocated memory is still 153.1 MB. Free memory was 102.5 MB in the beginning and 93.6 MB in the end (delta: 8.9 MB). Peak memory consumption was 9.9 MB. Max. memory is 8.0 GB. * TraceAbstraction took 2789.20 ms. Allocated memory was 153.1 MB in the beginning and 201.3 MB in the end (delta: 48.2 MB). Free memory was 93.1 MB in the beginning and 131.7 MB in the end (delta: -38.6 MB). Peak memory consumption was 9.6 MB. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 549]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] List a = (List) malloc(sizeof(struct node)); [L533] COND FALSE !(a == 0) [L534] List t; [L535] List p = a; [L536] a->h = 2 [L537] COND TRUE __VERIFIER_nondet_int() [L538] p->h = 1 [L539] t = (List) malloc(sizeof(struct node)) [L540] COND FALSE !(t == 0) [L541] p->n = t [L542] EXPR p->n [L542] p = p->n [L537] COND FALSE !(__VERIFIER_nondet_int()) [L544] p->h = 2 [L545] p->n = 0 [L546] p = a [L547] COND TRUE p!=0 [L548] EXPR p->h [L548] COND TRUE p->h != 2 [L549] reach_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 80 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.6s, OverallIterations: 4, TraceHistogramMax: 2, AutomataDifference: 1.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 115 SDtfs, 209 SDslu, 263 SDs, 0 SdLazy, 285 SolverSat, 34 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 33 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 24 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 27 ImplicationChecksByTransitivity, 0.6s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=52occurred 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, 47 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...