/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/list_flag-1.i -------------------------------------------------------------------------------- This is Ultimate 0.1.25-72570d3 [2020-08-22 19:04:07,420 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-08-22 19:04:07,423 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-08-22 19:04:07,461 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-08-22 19:04:07,461 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-08-22 19:04:07,468 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-08-22 19:04:07,472 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-08-22 19:04:07,476 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-08-22 19:04:07,478 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-08-22 19:04:07,481 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-08-22 19:04:07,482 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-08-22 19:04:07,483 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-08-22 19:04:07,483 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-08-22 19:04:07,486 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-08-22 19:04:07,488 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-08-22 19:04:07,490 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-08-22 19:04:07,491 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-08-22 19:04:07,493 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-08-22 19:04:07,494 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-08-22 19:04:07,503 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-08-22 19:04:07,505 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-08-22 19:04:07,506 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-08-22 19:04:07,507 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-08-22 19:04:07,507 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-08-22 19:04:07,519 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-08-22 19:04:07,519 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-08-22 19:04:07,520 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-08-22 19:04:07,522 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-08-22 19:04:07,523 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-08-22 19:04:07,523 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-08-22 19:04:07,524 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-08-22 19:04:07,524 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-08-22 19:04:07,526 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-08-22 19:04:07,527 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-08-22 19:04:07,528 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-08-22 19:04:07,528 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-08-22 19:04:07,529 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-08-22 19:04:07,529 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-08-22 19:04:07,529 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-08-22 19:04:07,530 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-08-22 19:04:07,531 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-08-22 19:04:07,532 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/automizer/acceleratedInterpolation/acceleratedInterpolationFastUPR_32.epf [2020-08-22 19:04:07,546 INFO L113 SettingsManager]: Loading preferences was successful [2020-08-22 19:04:07,547 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-08-22 19:04:07,548 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-08-22 19:04:07,549 INFO L138 SettingsManager]: * sizeof long=4 [2020-08-22 19:04:07,549 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-08-22 19:04:07,549 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-08-22 19:04:07,549 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-08-22 19:04:07,549 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-08-22 19:04:07,550 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-08-22 19:04:07,550 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-08-22 19:04:07,551 INFO L138 SettingsManager]: * sizeof long double=12 [2020-08-22 19:04:07,551 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-08-22 19:04:07,551 INFO L138 SettingsManager]: * Use constant arrays=true [2020-08-22 19:04:07,551 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-08-22 19:04:07,552 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-08-22 19:04:07,552 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-08-22 19:04:07,552 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-08-22 19:04:07,552 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-08-22 19:04:07,553 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:07,553 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-08-22 19:04:07,553 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-08-22 19:04:07,553 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-08-22 19:04:07,553 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-08-22 19:04:07,861 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-08-22 19:04:07,876 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-08-22 19:04:07,882 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-08-22 19:04:07,885 INFO L271 PluginConnector]: Initializing CDTParser... [2020-08-22 19:04:07,886 INFO L275 PluginConnector]: CDTParser initialized [2020-08-22 19:04:07,887 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-08-22 19:04:07,951 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4edde200/9cbd66f3101143efb0cdbca9d16eb0a1/FLAG7625f0c2f [2020-08-22 19:04:08,427 INFO L306 CDTParser]: Found 1 translation units. [2020-08-22 19:04:08,427 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-08-22 19:04:08,444 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4edde200/9cbd66f3101143efb0cdbca9d16eb0a1/FLAG7625f0c2f [2020-08-22 19:04:08,726 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a4edde200/9cbd66f3101143efb0cdbca9d16eb0a1 [2020-08-22 19:04:08,736 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-08-22 19:04:08,738 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-08-22 19:04:08,739 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:08,739 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-08-22 19:04:08,743 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-08-22 19:04:08,744 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:08" (1/1) ... [2020-08-22 19:04:08,747 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@33aa9fa9 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:08, skipping insertion in model container [2020-08-22 19:04:08,747 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 22.08 07:04:08" (1/1) ... [2020-08-22 19:04:08,755 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-08-22 19:04:08,793 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-08-22 19:04:09,245 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:09,255 INFO L203 MainTranslator]: Completed pre-run [2020-08-22 19:04:09,318 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-08-22 19:04:09,370 INFO L208 MainTranslator]: Completed translation [2020-08-22 19:04:09,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09 WrapperNode [2020-08-22 19:04:09,371 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-08-22 19:04:09,372 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-08-22 19:04:09,372 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-08-22 19:04:09,372 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-08-22 19:04:09,386 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,386 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,402 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,402 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,417 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,427 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,435 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... [2020-08-22 19:04:09,445 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-08-22 19:04:09,449 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-08-22 19:04:09,449 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-08-22 19:04:09,450 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-08-22 19:04:09,451 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-08-22 19:04:09,508 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-08-22 19:04:09,509 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-08-22 19:04:09,510 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-08-22 19:04:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-08-22 19:04:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-08-22 19:04:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-08-22 19:04:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-08-22 19:04:09,510 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-08-22 19:04:09,511 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-08-22 19:04:09,512 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-08-22 19:04:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-08-22 19:04:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-08-22 19:04:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-08-22 19:04:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-08-22 19:04:09,517 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-08-22 19:04:09,519 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-08-22 19:04:09,520 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-08-22 19:04:09,521 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-08-22 19:04:09,522 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-08-22 19:04:09,523 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-08-22 19:04:09,524 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-08-22 19:04:09,525 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-08-22 19:04:09,526 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-08-22 19:04:09,527 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-08-22 19:04:09,528 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-08-22 19:04:09,529 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-08-22 19:04:09,530 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-08-22 19:04:09,531 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-08-22 19:04:09,532 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-08-22 19:04:09,533 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-08-22 19:04:09,888 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-08-22 19:04:10,042 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-08-22 19:04:10,043 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-08-22 19:04:10,047 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:10 BoogieIcfgContainer [2020-08-22 19:04:10,047 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-08-22 19:04:10,049 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-08-22 19:04:10,049 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-08-22 19:04:10,052 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-08-22 19:04:10,053 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 22.08 07:04:08" (1/3) ... [2020-08-22 19:04:10,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ee326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:10, skipping insertion in model container [2020-08-22 19:04:10,054 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 22.08 07:04:09" (2/3) ... [2020-08-22 19:04:10,054 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@11ee326a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 22.08 07:04:10, skipping insertion in model container [2020-08-22 19:04:10,055 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 22.08 07:04:10" (3/3) ... [2020-08-22 19:04:10,056 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-08-22 19:04:10,067 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-08-22 19:04:10,075 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-08-22 19:04:10,089 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-08-22 19:04:10,110 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-08-22 19:04:10,110 INFO L376 AbstractCegarLoop]: Hoare is true [2020-08-22 19:04:10,110 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-08-22 19:04:10,111 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-08-22 19:04:10,111 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-08-22 19:04:10,111 INFO L380 AbstractCegarLoop]: Difference is false [2020-08-22 19:04:10,111 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-08-22 19:04:10,112 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-08-22 19:04:10,124 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-08-22 19:04:10,134 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-08-22 19:04:10,134 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:10,135 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] [2020-08-22 19:04:10,135 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:10,140 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:10,140 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-08-22 19:04:10,148 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:10,148 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [938393545] [2020-08-22 19:04:10,149 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:10,219 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:10,265 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:10,340 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:10,343 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:10,358 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:10,361 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [938393545] [2020-08-22 19:04:10,363 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:10,363 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-08-22 19:04:10,364 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914610943] [2020-08-22 19:04:10,370 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-08-22 19:04:10,370 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:10,389 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-08-22 19:04:10,390 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-08-22 19:04:10,393 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-08-22 19:04:10,582 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:10,583 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-08-22 19:04:10,583 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-08-22 19:04:10,585 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-08-22 19:04:10,585 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:10,594 INFO L225 Difference]: With dead ends: 89 [2020-08-22 19:04:10,595 INFO L226 Difference]: Without dead ends: 53 [2020-08-22 19:04:10,599 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 [2020-08-22 19:04:10,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-08-22 19:04:10,642 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-08-22 19:04:10,643 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-08-22 19:04:10,645 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-08-22 19:04:10,647 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-08-22 19:04:10,647 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:10,648 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-08-22 19:04:10,648 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-08-22 19:04:10,648 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-08-22 19:04:10,649 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-08-22 19:04:10,649 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:10,650 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] [2020-08-22 19:04:10,650 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-08-22 19:04:10,650 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:10,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:10,651 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-08-22 19:04:10,651 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:10,652 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [163806399] [2020-08-22 19:04:10,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:10,656 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:10,679 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:10,765 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:10,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:10,775 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:10,776 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [163806399] [2020-08-22 19:04:10,776 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:10,776 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:10,777 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1096682075] [2020-08-22 19:04:10,778 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:10,778 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:10,778 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:10,779 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:10,779 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-08-22 19:04:11,051 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:11,051 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-08-22 19:04:11,052 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 19:04:11,052 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-08-22 19:04:11,053 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:11,054 INFO L225 Difference]: With dead ends: 122 [2020-08-22 19:04:11,055 INFO L226 Difference]: Without dead ends: 115 [2020-08-22 19:04:11,057 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:11,057 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-08-22 19:04:11,068 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-08-22 19:04:11,069 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-08-22 19:04:11,070 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-08-22 19:04:11,071 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-08-22 19:04:11,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:11,071 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-08-22 19:04:11,071 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:11,071 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-08-22 19:04:11,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:04:11,073 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:11,073 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] [2020-08-22 19:04:11,073 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-08-22 19:04:11,074 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:11,074 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:11,074 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-08-22 19:04:11,074 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:11,075 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1399106404] [2020-08-22 19:04:11,075 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:11,099 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:11,114 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:11,183 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:11,184 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:11,191 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:11,192 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1399106404] [2020-08-22 19:04:11,192 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:11,192 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:11,192 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1136686012] [2020-08-22 19:04:11,193 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:11,193 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:11,193 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:11,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:11,194 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-08-22 19:04:11,426 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:11,427 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-08-22 19:04:11,427 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-08-22 19:04:11,427 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 19:04:11,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:11,429 INFO L225 Difference]: With dead ends: 117 [2020-08-22 19:04:11,429 INFO L226 Difference]: Without dead ends: 103 [2020-08-22 19:04:11,430 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:11,431 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-08-22 19:04:11,439 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-08-22 19:04:11,439 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-08-22 19:04:11,441 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-08-22 19:04:11,441 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-08-22 19:04:11,442 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:11,442 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-08-22 19:04:11,442 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:11,442 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-08-22 19:04:11,443 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-08-22 19:04:11,443 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:11,444 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] [2020-08-22 19:04:11,444 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-08-22 19:04:11,444 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:11,445 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:11,445 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-08-22 19:04:11,445 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:11,445 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1423697399] [2020-08-22 19:04:11,446 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:11,453 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:11,466 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:11,528 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-08-22 19:04:11,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-08-22 19:04:11,537 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-08-22 19:04:11,537 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1423697399] [2020-08-22 19:04:11,538 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-08-22 19:04:11,538 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-08-22 19:04:11,538 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1552844907] [2020-08-22 19:04:11,539 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-08-22 19:04:11,539 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-08-22 19:04:11,539 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-08-22 19:04:11,540 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-08-22 19:04:11,540 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-08-22 19:04:11,762 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-08-22 19:04:11,764 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-08-22 19:04:11,765 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-08-22 19:04:11,765 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-08-22 19:04:11,765 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-08-22 19:04:11,766 INFO L225 Difference]: With dead ends: 100 [2020-08-22 19:04:11,767 INFO L226 Difference]: Without dead ends: 82 [2020-08-22 19:04:11,767 INFO L675 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=23, Invalid=49, Unknown=0, NotChecked=0, Total=72 [2020-08-22 19:04:11,769 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-08-22 19:04:11,779 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-08-22 19:04:11,780 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-08-22 19:04:11,781 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-08-22 19:04:11,781 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-08-22 19:04:11,781 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-08-22 19:04:11,782 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-08-22 19:04:11,783 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-08-22 19:04:11,783 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-08-22 19:04:11,785 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-08-22 19:04:11,785 INFO L414 BasicCegarLoop]: Found error trace [2020-08-22 19:04:11,785 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] [2020-08-22 19:04:11,786 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-08-22 19:04:11,786 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-08-22 19:04:11,786 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-08-22 19:04:11,787 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-08-22 19:04:11,787 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-08-22 19:04:11,787 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [284774899] [2020-08-22 19:04:11,787 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-08-22 19:04:11,817 INFO L288 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-08-22 19:04:11,867 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:04:11,868 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:04:11,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-08-22 19:04:11,905 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-08-22 19:04:11,953 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-08-22 19:04:11,953 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-08-22 19:04:11,954 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-08-22 19:04:11,987 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 22.08 07:04:11 BoogieIcfgContainer [2020-08-22 19:04:11,987 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-08-22 19:04:11,998 INFO L168 Benchmark]: Toolchain (without parser) took 3258.90 ms. Allocated memory was 145.8 MB in the beginning and 247.5 MB in the end (delta: 101.7 MB). Free memory was 100.5 MB in the beginning and 196.8 MB in the end (delta: -96.3 MB). Peak memory consumption was 5.4 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:12,000 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. [2020-08-22 19:04:12,002 INFO L168 Benchmark]: CACSL2BoogieTranslator took 632.19 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 169.9 MB in the end (delta: -69.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:12,005 INFO L168 Benchmark]: Boogie Preprocessor took 77.44 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:12,006 INFO L168 Benchmark]: RCFGBuilder took 598.30 ms. Allocated memory is still 202.9 MB. Free memory was 167.2 MB in the beginning and 120.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. [2020-08-22 19:04:12,007 INFO L168 Benchmark]: TraceAbstraction took 1938.73 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 119.8 MB in the beginning and 196.8 MB in the end (delta: -77.0 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-08-22 19:04:12,015 INFO L336 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.22 ms. Allocated memory is still 145.8 MB. Free memory was 120.2 MB in the beginning and 120.0 MB in the end (delta: 209.8 kB). Peak memory consumption was 209.8 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 632.19 ms. Allocated memory was 145.8 MB in the beginning and 202.9 MB in the end (delta: 57.1 MB). Free memory was 100.1 MB in the beginning and 169.9 MB in the end (delta: -69.8 MB). Peak memory consumption was 21.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 77.44 ms. Allocated memory is still 202.9 MB. Free memory was 169.9 MB in the beginning and 167.2 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 598.30 ms. Allocated memory is still 202.9 MB. Free memory was 167.2 MB in the beginning and 120.5 MB in the end (delta: 46.7 MB). Peak memory consumption was 46.7 MB. Max. memory is 7.1 GB. * TraceAbstraction took 1938.73 ms. Allocated memory was 202.9 MB in the beginning and 247.5 MB in the end (delta: 44.6 MB). Free memory was 119.8 MB in the beginning and 196.8 MB in the end (delta: -77.0 MB). There was no memory consumed. Max. memory is 7.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 546]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L521] int flag = __VERIFIER_nondet_int(); [L522] List p, a, t; [L523] a = (List) malloc(sizeof(struct node)) [L524] COND FALSE !(a == 0) [L525] p = a [L526] COND TRUE __VERIFIER_nondet_int() [L527] COND TRUE \read(flag) [L528] p->h = 1 [L532] t = (List) malloc(sizeof(struct node)) [L533] COND FALSE !(t == 0) [L534] p->n = t [L535] EXPR p->n [L535] p = p->n [L526] COND FALSE !(__VERIFIER_nondet_int()) [L537] p->h = 3 [L538] p = a [L539] COND TRUE \read(flag) [L540] EXPR p->h [L540] COND FALSE !(p->h == 2) [L545] EXPR p->h [L545] COND TRUE p->h != 3 [L546] __VERIFIER_error() - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 85 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.8s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 210 SDtfs, 217 SDslu, 451 SDs, 0 SdLazy, 504 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.5s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 34 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 22 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=63occurred in iteration=2, 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, 121 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...