/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 0.1.25-3af5e1f [2020-09-04 16:38:43,317 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-09-04 16:38:43,321 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-09-04 16:38:43,347 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-09-04 16:38:43,348 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-09-04 16:38:43,349 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-09-04 16:38:43,351 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-09-04 16:38:43,352 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-09-04 16:38:43,354 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-09-04 16:38:43,355 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-09-04 16:38:43,356 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-09-04 16:38:43,358 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-09-04 16:38:43,358 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-09-04 16:38:43,359 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-09-04 16:38:43,360 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-09-04 16:38:43,362 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-09-04 16:38:43,363 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-09-04 16:38:43,364 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-09-04 16:38:43,366 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-09-04 16:38:43,368 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-09-04 16:38:43,369 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-09-04 16:38:43,372 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-09-04 16:38:43,375 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-09-04 16:38:43,376 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-09-04 16:38:43,383 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-09-04 16:38:43,383 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-09-04 16:38:43,383 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-09-04 16:38:43,386 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-09-04 16:38:43,387 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-09-04 16:38:43,388 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-09-04 16:38:43,388 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-09-04 16:38:43,389 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-09-04 16:38:43,390 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-09-04 16:38:43,391 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-09-04 16:38:43,393 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-09-04 16:38:43,394 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-09-04 16:38:43,394 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-09-04 16:38:43,395 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-09-04 16:38:43,395 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-09-04 16:38:43,396 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-09-04 16:38:43,398 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-09-04 16:38:43,399 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 16:38:43,427 INFO L113 SettingsManager]: Loading preferences was successful [2020-09-04 16:38:43,428 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-09-04 16:38:43,433 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * sizeof long=4 [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-09-04 16:38:43,434 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-09-04 16:38:43,435 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-09-04 16:38:43,435 INFO L138 SettingsManager]: * sizeof long double=12 [2020-09-04 16:38:43,436 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-09-04 16:38:43,436 INFO L138 SettingsManager]: * Use constant arrays=true [2020-09-04 16:38:43,436 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-09-04 16:38:43,436 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-09-04 16:38:43,437 INFO L138 SettingsManager]: * Size of a code block=SingleStatement [2020-09-04 16:38:43,437 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-09-04 16:38:43,437 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-09-04 16:38:43,437 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-09-04 16:38:43,437 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-09-04 16:38:43,438 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=AcceleratedInterpolation [2020-09-04 16:38:43,438 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-09-04 16:38:43,438 INFO L138 SettingsManager]: * Use separate solver for trace checks=false [2020-09-04 16:38:43,884 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-09-04 16:38:43,907 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-09-04 16:38:43,912 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-09-04 16:38:43,914 INFO L271 PluginConnector]: Initializing CDTParser... [2020-09-04 16:38:43,914 INFO L275 PluginConnector]: CDTParser initialized [2020-09-04 16:38:43,915 INFO L429 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-04 16:38:44,001 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf62a731/cd310564d7064d1486858613467f1db2/FLAG6e9522edf [2020-09-04 16:38:44,652 INFO L306 CDTParser]: Found 1 translation units. [2020-09-04 16:38:44,653 INFO L160 CDTParser]: Scanning /storage/repos/ultimate-2/trunk/examples/svcomp/list-properties/list_flag-1.i [2020-09-04 16:38:44,669 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf62a731/cd310564d7064d1486858613467f1db2/FLAG6e9522edf [2020-09-04 16:38:44,898 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate-2/releaseScripts/default/UAutomizer-linux/data/dbf62a731/cd310564d7064d1486858613467f1db2 [2020-09-04 16:38:44,911 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-09-04 16:38:44,914 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-09-04 16:38:44,915 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-09-04 16:38:44,915 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-09-04 16:38:44,919 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-09-04 16:38:44,921 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:38:44" (1/1) ... [2020-09-04 16:38:44,927 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@157ca41e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:44, skipping insertion in model container [2020-09-04 16:38:44,927 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 04.09 04:38:44" (1/1) ... [2020-09-04 16:38:44,938 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-09-04 16:38:45,008 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-09-04 16:38:45,521 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:38:45,534 INFO L203 MainTranslator]: Completed pre-run [2020-09-04 16:38:45,581 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-09-04 16:38:45,656 INFO L208 MainTranslator]: Completed translation [2020-09-04 16:38:45,657 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45 WrapperNode [2020-09-04 16:38:45,658 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-09-04 16:38:45,658 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-09-04 16:38:45,659 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-09-04 16:38:45,659 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-09-04 16:38:45,672 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,691 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,692 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,716 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,723 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,726 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (1/1) ... [2020-09-04 16:38:45,733 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-09-04 16:38:45,733 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-09-04 16:38:45,734 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-09-04 16:38:45,734 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-09-04 16:38:45,735 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (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 16:38:45,812 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-09-04 16:38:45,813 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-09-04 16:38:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-09-04 16:38:45,814 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-09-04 16:38:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2020-09-04 16:38:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-09-04 16:38:45,814 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-09-04 16:38:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-09-04 16:38:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-09-04 16:38:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-09-04 16:38:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-09-04 16:38:45,815 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-09-04 16:38:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-09-04 16:38:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-09-04 16:38:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-09-04 16:38:45,816 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-09-04 16:38:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-09-04 16:38:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-09-04 16:38:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-09-04 16:38:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-09-04 16:38:45,817 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-09-04 16:38:45,818 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-09-04 16:38:45,819 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-09-04 16:38:45,820 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-09-04 16:38:45,821 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-09-04 16:38:45,822 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-09-04 16:38:45,823 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-09-04 16:38:45,824 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-09-04 16:38:45,825 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-09-04 16:38:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-09-04 16:38:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-09-04 16:38:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-09-04 16:38:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-09-04 16:38:45,826 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-09-04 16:38:45,827 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-09-04 16:38:45,828 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-09-04 16:38:45,829 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-09-04 16:38:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-09-04 16:38:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-09-04 16:38:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-09-04 16:38:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-09-04 16:38:45,830 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-09-04 16:38:45,831 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-09-04 16:38:45,832 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-09-04 16:38:45,833 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-09-04 16:38:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-09-04 16:38:45,834 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-09-04 16:38:46,262 INFO L732 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-09-04 16:38:46,468 INFO L290 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-09-04 16:38:46,469 INFO L295 CfgBuilder]: Removed 3 assume(true) statements. [2020-09-04 16:38:46,474 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:38:46 BoogieIcfgContainer [2020-09-04 16:38:46,474 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-09-04 16:38:46,476 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-09-04 16:38:46,476 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-09-04 16:38:46,480 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-09-04 16:38:46,480 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 04.09 04:38:44" (1/3) ... [2020-09-04 16:38:46,481 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17760783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:38:46, skipping insertion in model container [2020-09-04 16:38:46,481 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 04.09 04:38:45" (2/3) ... [2020-09-04 16:38:46,482 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17760783 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 04.09 04:38:46, skipping insertion in model container [2020-09-04 16:38:46,482 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 04.09 04:38:46" (3/3) ... [2020-09-04 16:38:46,484 INFO L109 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-09-04 16:38:46,497 INFO L157 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:AcceleratedInterpolation Determinization: PREDICATE_ABSTRACTION [2020-09-04 16:38:46,508 INFO L169 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-09-04 16:38:46,532 INFO L251 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-09-04 16:38:46,563 INFO L375 AbstractCegarLoop]: Interprodecural is true [2020-09-04 16:38:46,563 INFO L376 AbstractCegarLoop]: Hoare is true [2020-09-04 16:38:46,563 INFO L377 AbstractCegarLoop]: Compute interpolants for AcceleratedInterpolation [2020-09-04 16:38:46,563 INFO L378 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-09-04 16:38:46,563 INFO L379 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-09-04 16:38:46,564 INFO L380 AbstractCegarLoop]: Difference is false [2020-09-04 16:38:46,564 INFO L381 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-09-04 16:38:46,564 INFO L385 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-09-04 16:38:46,586 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states. [2020-09-04 16:38:46,601 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2020-09-04 16:38:46,601 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:46,602 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] [2020-09-04 16:38:46,603 INFO L427 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:46,611 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:46,611 INFO L82 PathProgramCache]: Analyzing trace with hash -1409516089, now seen corresponding path program 1 times [2020-09-04 16:38:46,621 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:46,622 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [318703549] [2020-09-04 16:38:46,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:46,711 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:46,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,854 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:46,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:46,873 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 16:38:46,876 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [318703549] [2020-09-04 16:38:46,879 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:46,879 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-09-04 16:38:46,880 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [96013754] [2020-09-04 16:38:46,887 INFO L459 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-09-04 16:38:46,888 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:46,906 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-09-04 16:38:46,907 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-09-04 16:38:46,910 INFO L87 Difference]: Start difference. First operand 62 states. Second operand 3 states. [2020-09-04 16:38:47,082 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:47,082 INFO L93 Difference]: Finished difference Result 89 states and 104 transitions. [2020-09-04 16:38:47,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-09-04 16:38:47,085 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 26 [2020-09-04 16:38:47,085 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:47,118 INFO L225 Difference]: With dead ends: 89 [2020-09-04 16:38:47,119 INFO L226 Difference]: Without dead ends: 53 [2020-09-04 16:38:47,124 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 16:38:47,144 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2020-09-04 16:38:47,171 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 53. [2020-09-04 16:38:47,173 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 53 states. [2020-09-04 16:38:47,174 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 57 transitions. [2020-09-04 16:38:47,177 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 57 transitions. Word has length 26 [2020-09-04 16:38:47,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:47,177 INFO L479 AbstractCegarLoop]: Abstraction has 53 states and 57 transitions. [2020-09-04 16:38:47,177 INFO L480 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-09-04 16:38:47,178 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 57 transitions. [2020-09-04 16:38:47,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 31 [2020-09-04 16:38:47,179 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:47,179 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] [2020-09-04 16:38:47,180 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-09-04 16:38:47,180 INFO L427 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:47,181 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:47,181 INFO L82 PathProgramCache]: Analyzing trace with hash 1836407039, now seen corresponding path program 1 times [2020-09-04 16:38:47,181 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:47,181 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1884645440] [2020-09-04 16:38:47,182 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:47,187 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:47,213 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,325 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:47,328 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,338 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 16:38:47,338 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1884645440] [2020-09-04 16:38:47,338 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:47,339 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:38:47,339 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1810728091] [2020-09-04 16:38:47,340 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:38:47,340 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:47,341 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:38:47,341 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:38:47,341 INFO L87 Difference]: Start difference. First operand 53 states and 57 transitions. Second operand 7 states. [2020-09-04 16:38:47,620 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:47,620 INFO L93 Difference]: Finished difference Result 122 states and 132 transitions. [2020-09-04 16:38:47,620 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 16:38:47,621 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 30 [2020-09-04 16:38:47,621 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:47,623 INFO L225 Difference]: With dead ends: 122 [2020-09-04 16:38:47,624 INFO L226 Difference]: Without dead ends: 115 [2020-09-04 16:38:47,626 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 [2020-09-04 16:38:47,626 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 115 states. [2020-09-04 16:38:47,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 115 to 63. [2020-09-04 16:38:47,639 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 63 states. [2020-09-04 16:38:47,640 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 63 states to 63 states and 69 transitions. [2020-09-04 16:38:47,641 INFO L78 Accepts]: Start accepts. Automaton has 63 states and 69 transitions. Word has length 30 [2020-09-04 16:38:47,641 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:47,641 INFO L479 AbstractCegarLoop]: Abstraction has 63 states and 69 transitions. [2020-09-04 16:38:47,641 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:38:47,642 INFO L276 IsEmpty]: Start isEmpty. Operand 63 states and 69 transitions. [2020-09-04 16:38:47,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 16:38:47,643 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:47,643 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] [2020-09-04 16:38:47,644 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-09-04 16:38:47,644 INFO L427 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:47,644 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:47,644 INFO L82 PathProgramCache]: Analyzing trace with hash 1477911671, now seen corresponding path program 1 times [2020-09-04 16:38:47,645 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:47,645 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [510792920] [2020-09-04 16:38:47,645 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:47,677 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:47,695 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,785 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:47,788 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:47,795 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 16:38:47,796 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [510792920] [2020-09-04 16:38:47,796 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:47,796 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:38:47,797 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [395960822] [2020-09-04 16:38:47,797 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:38:47,797 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:47,797 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:38:47,798 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:38:47,798 INFO L87 Difference]: Start difference. First operand 63 states and 69 transitions. Second operand 7 states. [2020-09-04 16:38:48,041 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:48,041 INFO L93 Difference]: Finished difference Result 117 states and 125 transitions. [2020-09-04 16:38:48,042 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-09-04 16:38:48,042 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-04 16:38:48,042 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:48,044 INFO L225 Difference]: With dead ends: 117 [2020-09-04 16:38:48,044 INFO L226 Difference]: Without dead ends: 103 [2020-09-04 16:38:48,045 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 [2020-09-04 16:38:48,045 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2020-09-04 16:38:48,054 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 61. [2020-09-04 16:38:48,054 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 61 states. [2020-09-04 16:38:48,056 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 61 states to 61 states and 66 transitions. [2020-09-04 16:38:48,056 INFO L78 Accepts]: Start accepts. Automaton has 61 states and 66 transitions. Word has length 36 [2020-09-04 16:38:48,057 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:48,057 INFO L479 AbstractCegarLoop]: Abstraction has 61 states and 66 transitions. [2020-09-04 16:38:48,057 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:38:48,057 INFO L276 IsEmpty]: Start isEmpty. Operand 61 states and 66 transitions. [2020-09-04 16:38:48,058 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-09-04 16:38:48,058 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:48,059 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] [2020-09-04 16:38:48,059 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-09-04 16:38:48,059 INFO L427 AbstractCegarLoop]: === Iteration 4 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:48,059 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:48,060 INFO L82 PathProgramCache]: Analyzing trace with hash -380981001, now seen corresponding path program 1 times [2020-09-04 16:38:48,060 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:48,060 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [1475061710] [2020-09-04 16:38:48,061 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:48,068 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:48,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,156 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-09-04 16:38:48,158 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-09-04 16:38:48,166 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 16:38:48,167 INFO L354 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModulePreferences [1475061710] [2020-09-04 16:38:48,167 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-09-04 16:38:48,167 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-09-04 16:38:48,167 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1854010677] [2020-09-04 16:38:48,168 INFO L459 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-09-04 16:38:48,168 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy FIXED_PREFERENCES [2020-09-04 16:38:48,169 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-09-04 16:38:48,169 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-09-04 16:38:48,169 INFO L87 Difference]: Start difference. First operand 61 states and 66 transitions. Second operand 7 states. [2020-09-04 16:38:48,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-09-04 16:38:48,425 INFO L93 Difference]: Finished difference Result 100 states and 107 transitions. [2020-09-04 16:38:48,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2020-09-04 16:38:48,426 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 36 [2020-09-04 16:38:48,426 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-09-04 16:38:48,427 INFO L225 Difference]: With dead ends: 100 [2020-09-04 16:38:48,428 INFO L226 Difference]: Without dead ends: 82 [2020-09-04 16:38:48,428 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 [2020-09-04 16:38:48,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2020-09-04 16:38:48,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 55. [2020-09-04 16:38:48,436 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 55 states. [2020-09-04 16:38:48,437 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 55 states to 55 states and 59 transitions. [2020-09-04 16:38:48,437 INFO L78 Accepts]: Start accepts. Automaton has 55 states and 59 transitions. Word has length 36 [2020-09-04 16:38:48,437 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-09-04 16:38:48,437 INFO L479 AbstractCegarLoop]: Abstraction has 55 states and 59 transitions. [2020-09-04 16:38:48,437 INFO L480 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-09-04 16:38:48,438 INFO L276 IsEmpty]: Start isEmpty. Operand 55 states and 59 transitions. [2020-09-04 16:38:48,439 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 43 [2020-09-04 16:38:48,439 INFO L414 BasicCegarLoop]: Found error trace [2020-09-04 16:38:48,439 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] [2020-09-04 16:38:48,439 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-09-04 16:38:48,440 INFO L427 AbstractCegarLoop]: === Iteration 5 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-09-04 16:38:48,440 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-09-04 16:38:48,440 INFO L82 PathProgramCache]: Analyzing trace with hash -1659276919, now seen corresponding path program 1 times [2020-09-04 16:38:48,440 INFO L163 FreeRefinementEngine]: Executing refinement strategy FIXED_PREFERENCES [2020-09-04 16:38:48,441 INFO L354 FreeRefinementEngine]: Using trace check IpTcStrategyModulePreferences [430286572] [2020-09-04 16:38:48,441 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-09-04 16:38:48,459 INFO L283 leratedInterpolation]: No loops in this trace, falling back to nested interpolation [2020-09-04 16:38:48,489 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:38:48,490 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:38:48,513 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-09-04 16:38:48,513 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-09-04 16:38:48,564 INFO L174 FreeRefinementEngine]: Strategy FIXED_PREFERENCES found a feasible trace [2020-09-04 16:38:48,564 INFO L520 BasicCegarLoop]: Counterexample might be feasible [2020-09-04 16:38:48,565 WARN L516 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-09-04 16:38:48,590 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 04.09 04:38:48 BoogieIcfgContainer [2020-09-04 16:38:48,590 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-09-04 16:38:48,594 INFO L168 Benchmark]: Toolchain (without parser) took 3679.32 ms. Allocated memory was 138.4 MB in the beginning and 250.1 MB in the end (delta: 111.7 MB). Free memory was 101.4 MB in the beginning and 200.6 MB in the end (delta: -99.2 MB). Peak memory consumption was 12.4 MB. Max. memory is 7.1 GB. [2020-09-04 16:38:48,595 INFO L168 Benchmark]: CDTParser took 0.22 ms. Allocated memory is still 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. [2020-09-04 16:38:48,596 INFO L168 Benchmark]: CACSL2BoogieTranslator took 743.24 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 169.8 MB in the end (delta: -68.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. [2020-09-04 16:38:48,597 INFO L168 Benchmark]: Boogie Preprocessor took 74.46 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 167.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. [2020-09-04 16:38:48,598 INFO L168 Benchmark]: RCFGBuilder took 741.23 ms. Allocated memory is still 202.9 MB. Free memory was 167.1 MB in the beginning and 120.0 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. [2020-09-04 16:38:48,599 INFO L168 Benchmark]: TraceAbstraction took 2114.09 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 120.0 MB in the beginning and 200.6 MB in the end (delta: -80.6 MB). There was no memory consumed. Max. memory is 7.1 GB. [2020-09-04 16:38:48,603 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 138.4 MB. Free memory was 120.9 MB in the beginning and 120.7 MB in the end (delta: 210.0 kB). Peak memory consumption was 210.0 kB. Max. memory is 7.1 GB. * CACSL2BoogieTranslator took 743.24 ms. Allocated memory was 138.4 MB in the beginning and 202.9 MB in the end (delta: 64.5 MB). Free memory was 101.2 MB in the beginning and 169.8 MB in the end (delta: -68.6 MB). Peak memory consumption was 26.3 MB. Max. memory is 7.1 GB. * Boogie Preprocessor took 74.46 ms. Allocated memory is still 202.9 MB. Free memory was 169.8 MB in the beginning and 167.1 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.7 MB. Max. memory is 7.1 GB. * RCFGBuilder took 741.23 ms. Allocated memory is still 202.9 MB. Free memory was 167.1 MB in the beginning and 120.0 MB in the end (delta: 47.1 MB). Peak memory consumption was 47.1 MB. Max. memory is 7.1 GB. * TraceAbstraction took 2114.09 ms. Allocated memory was 202.9 MB in the beginning and 250.1 MB in the end (delta: 47.2 MB). Free memory was 120.0 MB in the beginning and 200.6 MB in the end (delta: -80.6 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: 2.0s, OverallIterations: 5, TraceHistogramMax: 2, AutomataDifference: 1.0s, 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...