/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf -i ../../../trunk/examples/svcomp/list-properties/splice-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-3af5e1f [2020-09-04 16:39:07,974 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:39:07,978 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:39:08,008 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:39:08,008 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:39:08,009 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:39:08,011 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:39:08,012 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:39:08,014 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:39:08,015 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:39:08,016 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:39:08,017 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:39:08,017 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:39:08,018 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:39:08,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:39:08,021 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:39:08,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:39:08,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:39:08,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:39:08,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:39:08,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:39:08,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:39:08,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:39:08,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:39:08,033 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:39:08,034 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:39:08,034 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:39:08,035 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:39:08,035 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:39:08,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:39:08,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:39:08,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:39:08,038 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:39:08,039 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:39:08,040 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:39:08,040 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:39:08,041 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:39:08,041 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:39:08,041 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:39:08,042 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:39:08,043 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:39:08,044 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-09-04 16:39:08,058 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:39:08,059 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:39:08,061 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:39:08,061 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:39:08,062 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:39:08,062 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:39:08,062 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:39:08,063 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:39:08,063 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:39:08,063 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:39:08,063 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:39:08,063 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:39:08,064 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:39:08,064 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:39:08,064 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:39:08,064 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:39:08,064 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:39:08,065 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:39:08,066 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:39:08,066 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:39:08,066 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:39:08,066 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:39:08,067 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:39:08,522 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:39:08,539 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:39:08,543 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:39:08,545 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:39:08,546 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:39:08,547 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/splice-1.i [2020-09-04 16:39:08,632 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf9b5280/5b824d7e92c14d289cf8bc8cf2534bf3/FLAGa91e7f587 [2020-09-04 16:39:09,234 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:39:09,235 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/splice-1.i [2020-09-04 16:39:09,250 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf9b5280/5b824d7e92c14d289cf8bc8cf2534bf3/FLAGa91e7f587 [2020-09-04 16:39:09,506 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf9b5280/5b824d7e92c14d289cf8bc8cf2534bf3 [2020-09-04 16:39:09,522 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:39:09,526 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:39:09,531 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:09,531 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:39:09,535 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:39:09,536 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:09" (1/1) ... [2020-09-04 16:39:09,541 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@42a688b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:09, skipping insertion in model container [2020-09-04 16:39:09,541 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:39:09" (1/1) ... [2020-09-04 16:39:09,552 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:39:09,599 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:39:10,085 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:10,104 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:39:10,194 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:39:10,250 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:39:10,250 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10 WrapperNode [2020-09-04 16:39:10,251 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:39:10,251 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:39:10,252 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:39:10,252 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:39:10,267 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,267 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,285 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,286 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,305 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,312 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,317 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... [2020-09-04 16:39:10,324 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:39:10,324 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:39:10,324 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:39:10,325 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:39:10,326 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (1/1) ... No working directory specified, using /storage/repos/ultimate-2/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 [2020-09-04 16:39:10,414 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:39:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:39:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 16:39:10,415 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 16:39:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-04 16:39:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-04 16:39:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-04 16:39:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-04 16:39:10,416 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:39:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:39:10,417 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:39:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:39:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:39:10,418 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:39:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:39:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:39:10,419 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:39:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:39:10,420 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:39:10,421 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:39:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:39:10,422 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:39:10,424 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:39:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:39:10,425 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-04 16:39:10,426 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:39:10,427 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:39:10,428 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:39:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:39:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:39:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:39:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:39:10,429 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:39:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:39:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:39:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:39:10,430 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:39:10,431 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:39:10,432 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:39:10,433 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:39:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:39:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:39:10,434 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:39:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:39:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:39:10,435 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:39:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:39:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:39:10,436 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:39:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:39:10,437 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:39:10,438 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:39:10,439 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:39:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:39:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:39:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:39:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:39:10,440 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:39:10,441 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:39:10,442 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-04 16:39:10,443 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:39:10,444 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:39:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:39:10,445 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:39:10,832 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-04 16:39:11,100 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:39:11,100 INFO L295 CfgBuilder]: Removed 4 assume(true) statements. [2020-09-04 16:39:11,105 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:11 BoogieIcfgContainer [2020-09-04 16:39:11,106 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:39:11,107 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:39:11,108 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:39:11,112 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:39:11,112 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:39:09" (1/3) ... [2020-09-04 16:39:11,113 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f60526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:11, skipping insertion in model container [2020-09-04 16:39:11,113 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:39:10" (2/3) ... [2020-09-04 16:39:11,114 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6f60526e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:39:11, skipping insertion in model container [2020-09-04 16:39:11,114 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:39:11" (3/3) ... [2020-09-04 16:39:11,116 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2020-09-04 16:39:11,129 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:39:11,144 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:39:11,168 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:39:11,200 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:39:11,201 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:39:11,201 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:39:11,201 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:39:11,201 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:39:11,201 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:39:11,202 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:39:11,202 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:39:11,222 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states. [2020-09-04 16:39:11,238 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2020-09-04 16:39:11,239 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:11,240 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:11,241 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:11,249 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:11,250 INFO L82 PathProgramCache]: Analyzing trace with hash 570656219, now seen corresponding path program 1 times [2020-09-04 16:39:11,264 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:11,265 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [697237838] [2020-09-04 16:39:11,265 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:11,373 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:11,432 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:11,520 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:11,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:11,539 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:11,542 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [697237838] [2020-09-04 16:39:11,544 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:11,545 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:39:11,546 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467342448] [2020-09-04 16:39:11,552 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:39:11,552 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:11,567 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:39:11,568 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:39:11,570 INFO L87 Difference]: Start difference. First operand 88 states. Second operand 3 states. [2020-09-04 16:39:11,828 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:11,829 INFO L93 Difference]: Finished difference Result 138 states and 161 transitions. [2020-09-04 16:39:11,829 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:39:11,831 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 33 [2020-09-04 16:39:11,832 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:11,843 INFO L225 Difference]: With dead ends: 138 [2020-09-04 16:39:11,844 INFO L226 Difference]: Without dead ends: 76 [2020-09-04 16:39:11,849 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 [2020-09-04 16:39:11,871 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-09-04 16:39:11,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 76. [2020-09-04 16:39:11,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 76 states. [2020-09-04 16:39:11,906 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 82 transitions. [2020-09-04 16:39:11,909 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 82 transitions. Word has length 33 [2020-09-04 16:39:11,909 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:11,909 INFO L479 AbstractCegarLoop]: Abstraction has 76 states and 82 transitions. [2020-09-04 16:39:11,910 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:39:11,910 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 82 transitions. [2020-09-04 16:39:11,911 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 38 [2020-09-04 16:39:11,912 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:11,912 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:11,912 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:39:11,913 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:11,913 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:11,913 INFO L82 PathProgramCache]: Analyzing trace with hash -1726039966, now seen corresponding path program 1 times [2020-09-04 16:39:11,914 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:11,914 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [262405593] [2020-09-04 16:39:11,914 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:11,919 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:11,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,029 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:12,031 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,041 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:12,042 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [262405593] [2020-09-04 16:39:12,042 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:12,043 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-09-04 16:39:12,043 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709146254] [2020-09-04 16:39:12,044 INFO L459 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-09-04 16:39:12,044 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:12,045 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-09-04 16:39:12,045 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:39:12,045 INFO L87 Difference]: Start difference. First operand 76 states and 82 transitions. Second operand 6 states. [2020-09-04 16:39:12,295 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:12,296 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-09-04 16:39:12,296 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:39:12,296 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 37 [2020-09-04 16:39:12,297 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:12,299 INFO L225 Difference]: With dead ends: 142 [2020-09-04 16:39:12,299 INFO L226 Difference]: Without dead ends: 98 [2020-09-04 16:39:12,301 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2020-09-04 16:39:12,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2020-09-04 16:39:12,312 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 78. [2020-09-04 16:39:12,312 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 78 states. [2020-09-04 16:39:12,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 78 states to 78 states and 84 transitions. [2020-09-04 16:39:12,314 INFO L78 Accepts]: Start accepts. Automaton has 78 states and 84 transitions. Word has length 37 [2020-09-04 16:39:12,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:12,314 INFO L479 AbstractCegarLoop]: Abstraction has 78 states and 84 transitions. [2020-09-04 16:39:12,314 INFO L480 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-09-04 16:39:12,315 INFO L276 IsEmpty]: Start isEmpty. Operand 78 states and 84 transitions. [2020-09-04 16:39:12,316 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-09-04 16:39:12,316 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:12,317 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:12,317 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:39:12,317 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:12,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:12,318 INFO L82 PathProgramCache]: Analyzing trace with hash 294194033, now seen corresponding path program 1 times [2020-09-04 16:39:12,318 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:12,318 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1101439363] [2020-09-04 16:39:12,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:12,358 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:12,392 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,503 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:12,505 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:12,515 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1101439363] [2020-09-04 16:39:12,516 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:12,516 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:39:12,516 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1389523787] [2020-09-04 16:39:12,517 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:39:12,517 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:12,517 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:39:12,518 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:39:12,518 INFO L87 Difference]: Start difference. First operand 78 states and 84 transitions. Second operand 5 states. [2020-09-04 16:39:12,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:12,697 INFO L93 Difference]: Finished difference Result 124 states and 135 transitions. [2020-09-04 16:39:12,698 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:39:12,698 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 50 [2020-09-04 16:39:12,698 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:12,700 INFO L225 Difference]: With dead ends: 124 [2020-09-04 16:39:12,700 INFO L226 Difference]: Without dead ends: 105 [2020-09-04 16:39:12,701 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:39:12,701 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 105 states. [2020-09-04 16:39:12,713 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 105 to 92. [2020-09-04 16:39:12,713 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 92 states. [2020-09-04 16:39:12,715 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2020-09-04 16:39:12,715 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 50 [2020-09-04 16:39:12,715 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:12,716 INFO L479 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2020-09-04 16:39:12,716 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:39:12,716 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2020-09-04 16:39:12,717 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2020-09-04 16:39:12,718 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:12,718 INFO L422 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:12,718 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:39:12,719 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:12,719 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:12,719 INFO L82 PathProgramCache]: Analyzing trace with hash -2102515392, now seen corresponding path program 1 times [2020-09-04 16:39:12,720 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:12,720 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [692386003] [2020-09-04 16:39:12,720 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:12,736 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:12,760 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,833 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:39:12,835 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:39:12,855 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-09-04 16:39:12,855 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [692386003] [2020-09-04 16:39:12,856 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:39:12,856 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-09-04 16:39:12,857 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1092875298] [2020-09-04 16:39:12,857 INFO L459 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-09-04 16:39:12,858 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:39:12,858 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-09-04 16:39:12,858 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-09-04 16:39:12,859 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand 5 states. [2020-09-04 16:39:13,069 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:39:13,070 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2020-09-04 16:39:13,070 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-09-04 16:39:13,070 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 52 [2020-09-04 16:39:13,071 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:39:13,072 INFO L225 Difference]: With dead ends: 142 [2020-09-04 16:39:13,073 INFO L226 Difference]: Without dead ends: 127 [2020-09-04 16:39:13,074 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-09-04 16:39:13,074 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 127 states. [2020-09-04 16:39:13,087 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 127 to 120. [2020-09-04 16:39:13,087 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 120 states. [2020-09-04 16:39:13,089 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 120 states to 120 states and 132 transitions. [2020-09-04 16:39:13,089 INFO L78 Accepts]: Start accepts. Automaton has 120 states and 132 transitions. Word has length 52 [2020-09-04 16:39:13,089 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:39:13,089 INFO L479 AbstractCegarLoop]: Abstraction has 120 states and 132 transitions. [2020-09-04 16:39:13,090 INFO L480 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-09-04 16:39:13,090 INFO L276 IsEmpty]: Start isEmpty. Operand 120 states and 132 transitions. [2020-09-04 16:39:13,092 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 62 [2020-09-04 16:39:13,092 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:39:13,092 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-09-04 16:39:13,092 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:39:13,093 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:39:13,093 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:39:13,093 INFO L82 PathProgramCache]: Analyzing trace with hash -1840938300, now seen corresponding path program 1 times [2020-09-04 16:39:13,093 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:39:13,094 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [447512505] [2020-09-04 16:39:13,094 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:39:13,106 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:39:13,147 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:39:13,148 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:39:13,198 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:39:13,198 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:39:13,260 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:39:13,260 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:39:13,261 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:39:13,306 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:39:13 BoogieIcfgContainer [2020-09-04 16:39:13,306 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:39:13,320 INFO L168 Benchmark]: Toolchain (without parser) took 3792.20 ms. Allocated memory was 138.4 MB in the beginning and 249.6 MB in the end (delta: 111.1 MB). Free memory was 100.7 MB in the beginning and 195.4 MB in the end (delta: -94.7 MB). Peak memory consumption was 16.5 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:13,321 INFO L168 Benchmark]: CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:39:13,323 INFO L168 Benchmark]: CACSL2BoogieTranslator took 720.58 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 168.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:13,324 INFO L168 Benchmark]: Boogie Preprocessor took 72.40 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 165.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:13,325 INFO L168 Benchmark]: RCFGBuilder took 781.64 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 114.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:39:13,326 INFO L168 Benchmark]: TraceAbstraction took 2199.15 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 114.4 MB in the beginning and 195.4 MB in the end (delta: -81.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:39:13,335 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.23 ms. Allocated memory is still 138.4 MB. Free memory was 119.7 MB in the beginning and 119.5 MB in the end (delta: 209.8 kB). There was no memory consumed. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 720.58 ms. Allocated memory was 138.4 MB in the beginning and 202.4 MB in the end (delta: 64.0 MB). Free memory was 100.3 MB in the beginning and 168.4 MB in the end (delta: -68.1 MB). Peak memory consumption was 25.2 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 72.40 ms. Allocated memory is still 202.4 MB. Free memory was 168.4 MB in the beginning and 165.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 781.64 ms. Allocated memory is still 202.4 MB. Free memory was 165.7 MB in the beginning and 114.4 MB in the end (delta: 51.3 MB). Peak memory consumption was 51.3 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2199.15 ms. Allocated memory was 202.4 MB in the beginning and 249.6 MB in the end (delta: 47.2 MB). Free memory was 114.4 MB in the beginning and 195.4 MB in the end (delta: -81.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 573]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); [L523] COND FALSE !(a == 0) [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; [L530] COND TRUE __VERIFIER_nondet_int() [L531] COND TRUE \read(flag) [L532] p->h = 1 [L533] flag = 0 [L538] t = (List) malloc(sizeof(struct node)) [L539] COND FALSE !(t == 0) [L540] p->n = t [L541] EXPR p->n [L541] p = p->n [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 [L544] EXPR a->h [L544] COND FALSE !(a->h == 3) [L545] flag = 1 [L546] l1 = 0 [L547] l2 = 0 [L548] p = a [L549] EXPR p->h [L549] COND TRUE p->h != 3 [L550] t = p [L551] EXPR p->n [L551] p = p->n [L552] COND TRUE \read(flag) [L553] t->n = l1 [L554] l1 = t [L555] flag = 0 [L549] EXPR p->h [L549] COND FALSE !(p->h != 3) [L562] p = l1 [L563] COND TRUE p != 0 [L564] EXPR p->h [L564] COND TRUE p->h != 2 [L573] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 111 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 324 SDtfs, 77 SDslu, 459 SDs, 0 SdLazy, 450 SolverSat, 11 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 27 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=120occurred in iteration=4, 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, 4 MinimizatonAttempts, 40 StatesRemovedByMinimization, 3 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...