/usr/bin/java -Xmx8000000000 -Xss4m -jar ./plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata ./data -tc ../../../trunk/examples/toolchains/AutomizerC.xml -s ../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf -i ../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i -------------------------------------------------------------------------------- This is Ultimate 0.2.0-b8ad66e [2020-10-23 18:29:07,354 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-23 18:29:07,358 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-23 18:29:07,415 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-23 18:29:07,416 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-23 18:29:07,421 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-23 18:29:07,425 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-23 18:29:07,433 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-23 18:29:07,437 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-23 18:29:07,443 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-23 18:29:07,445 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-23 18:29:07,447 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-23 18:29:07,447 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-23 18:29:07,451 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-23 18:29:07,453 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-23 18:29:07,455 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-23 18:29:07,457 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-23 18:29:07,467 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-23 18:29:07,474 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-23 18:29:07,479 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-23 18:29:07,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-23 18:29:07,483 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-23 18:29:07,484 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-23 18:29:07,485 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-23 18:29:07,488 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-23 18:29:07,488 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-23 18:29:07,488 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-23 18:29:07,490 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-23 18:29:07,490 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-23 18:29:07,491 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-23 18:29:07,492 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-23 18:29:07,493 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-23 18:29:07,494 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-23 18:29:07,495 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-23 18:29:07,496 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-23 18:29:07,497 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-23 18:29:07,497 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-23 18:29:07,498 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-23 18:29:07,498 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-23 18:29:07,499 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-23 18:29:07,500 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-23 18:29:07,501 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/settings/default/automizer/svcomp-Reach-32bit-Automizer_Default.epf [2020-10-23 18:29:07,527 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-23 18:29:07,528 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-23 18:29:07,529 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-23 18:29:07,530 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-23 18:29:07,530 INFO L138 SettingsManager]: * Use SBE=true [2020-10-23 18:29:07,530 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-23 18:29:07,530 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-23 18:29:07,531 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2020-10-23 18:29:07,532 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-23 18:29:07,532 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2020-10-23 18:29:07,532 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-23 18:29:07,532 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2020-10-23 18:29:07,533 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-23 18:29:07,533 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-23 18:29:07,533 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-23 18:29:07,533 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-23 18:29:07,533 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-23 18:29:07,534 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-23 18:29:07,534 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-23 18:29:07,534 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2020-10-23 18:29:07,534 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-23 18:29:07,534 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-23 18:29:07,534 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2020-10-23 18:29:07,535 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-23 18:29:07,535 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2020-10-23 18:29:08,031 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-23 18:29:08,083 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-23 18:29:08,086 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-23 18:29:08,088 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-23 18:29:08,089 INFO L275 PluginConnector]: CDTParser initialized [2020-10-23 18:29:08,090 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-23 18:29:08,184 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5d9c4c5/39d75290ba304d8e9f2e078ff5278782/FLAGa9d040092 [2020-10-23 18:29:08,992 INFO L306 CDTParser]: Found 1 translation units. [2020-10-23 18:29:08,992 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext3-properties/dll_nullified-1.i [2020-10-23 18:29:09,014 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5d9c4c5/39d75290ba304d8e9f2e078ff5278782/FLAGa9d040092 [2020-10-23 18:29:09,275 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7e5d9c4c5/39d75290ba304d8e9f2e078ff5278782 [2020-10-23 18:29:09,278 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-23 18:29:09,286 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2020-10-23 18:29:09,287 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-23 18:29:09,288 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-23 18:29:09,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-23 18:29:09,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,302 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@40cf9110 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09, skipping insertion in model container [2020-10-23 18:29:09,303 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,311 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-23 18:29:09,388 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-23 18:29:09,696 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:29:09,714 INFO L203 MainTranslator]: Completed pre-run [2020-10-23 18:29:09,808 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-23 18:29:09,878 INFO L208 MainTranslator]: Completed translation [2020-10-23 18:29:09,879 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09 WrapperNode [2020-10-23 18:29:09,879 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-23 18:29:09,881 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-23 18:29:09,881 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-23 18:29:09,884 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-23 18:29:09,898 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,898 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,914 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,914 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,933 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,938 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,942 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (1/1) ... [2020-10-23 18:29:09,949 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-23 18:29:09,950 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-23 18:29:09,951 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-23 18:29:09,951 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-23 18:29:09,952 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (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 [2020-10-23 18:29:10,041 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-23 18:29:10,042 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-23 18:29:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-23 18:29:10,043 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-23 18:29:10,044 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-23 18:29:10,045 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-23 18:29:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure dll_create [2020-10-23 18:29:10,046 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-23 18:29:10,046 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-23 18:29:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-23 18:29:10,068 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-23 18:29:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-23 18:29:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-23 18:29:10,069 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-23 18:29:10,070 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-23 18:29:10,071 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-23 18:29:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-23 18:29:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-23 18:29:10,072 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-23 18:29:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-23 18:29:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-23 18:29:10,075 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-23 18:29:10,076 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-23 18:29:10,077 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-23 18:29:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-23 18:29:10,078 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-23 18:29:10,080 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-23 18:29:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-23 18:29:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-23 18:29:10,081 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-23 18:29:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-23 18:29:10,082 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-23 18:29:10,083 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure cfree [2020-10-23 18:29:10,084 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-23 18:29:10,085 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-23 18:29:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-23 18:29:10,086 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-23 18:29:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-23 18:29:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-23 18:29:10,087 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-23 18:29:10,088 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-23 18:29:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-23 18:29:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-23 18:29:10,089 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-23 18:29:10,090 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-23 18:29:10,091 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-23 18:29:10,092 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-23 18:29:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-23 18:29:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-23 18:29:10,093 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-23 18:29:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-23 18:29:10,094 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure dll_create [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-23 18:29:10,095 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-23 18:29:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-23 18:29:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-23 18:29:10,096 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-23 18:29:10,511 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-23 18:29:10,713 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-23 18:29:10,714 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-23 18:29:10,715 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:29:10 BoogieIcfgContainer [2020-10-23 18:29:10,716 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-23 18:29:10,717 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-23 18:29:10,717 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-23 18:29:10,721 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-23 18:29:10,721 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.10 06:29:09" (1/3) ... [2020-10-23 18:29:10,722 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f57c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:29:10, skipping insertion in model container [2020-10-23 18:29:10,722 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.10 06:29:09" (2/3) ... [2020-10-23 18:29:10,723 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@66f57c62 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.10 06:29:10, skipping insertion in model container [2020-10-23 18:29:10,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.10 06:29:10" (3/3) ... [2020-10-23 18:29:10,725 INFO L111 eAbstractionObserver]: Analyzing ICFG dll_nullified-1.i [2020-10-23 18:29:10,737 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-23 18:29:10,742 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2020-10-23 18:29:10,756 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2020-10-23 18:29:10,786 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-23 18:29:10,787 INFO L378 AbstractCegarLoop]: Hoare is true [2020-10-23 18:29:10,787 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-23 18:29:10,787 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-23 18:29:10,787 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-23 18:29:10,787 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-23 18:29:10,787 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-23 18:29:10,787 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-23 18:29:10,806 INFO L276 IsEmpty]: Start isEmpty. Operand 45 states. [2020-10-23 18:29:10,812 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:29:10,813 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:10,814 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] [2020-10-23 18:29:10,814 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:10,821 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:10,821 INFO L82 PathProgramCache]: Analyzing trace with hash 523345448, now seen corresponding path program 1 times [2020-10-23 18:29:10,832 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:10,832 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [152978568] [2020-10-23 18:29:10,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:10,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:11,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,093 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:11,098 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,109 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:11,110 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [152978568] [2020-10-23 18:29:11,111 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:29:11,111 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-23 18:29:11,112 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1019369794] [2020-10-23 18:29:11,118 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-23 18:29:11,118 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:11,133 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-23 18:29:11,134 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-23 18:29:11,137 INFO L87 Difference]: Start difference. First operand 45 states. Second operand 4 states. [2020-10-23 18:29:11,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:11,488 INFO L93 Difference]: Finished difference Result 89 states and 128 transitions. [2020-10-23 18:29:11,489 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-23 18:29:11,490 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 22 [2020-10-23 18:29:11,491 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:11,503 INFO L225 Difference]: With dead ends: 89 [2020-10-23 18:29:11,503 INFO L226 Difference]: Without dead ends: 51 [2020-10-23 18:29:11,509 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:29:11,549 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2020-10-23 18:29:11,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 34. [2020-10-23 18:29:11,574 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 34 states. [2020-10-23 18:29:11,576 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 43 transitions. [2020-10-23 18:29:11,578 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 43 transitions. Word has length 22 [2020-10-23 18:29:11,578 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:11,579 INFO L481 AbstractCegarLoop]: Abstraction has 34 states and 43 transitions. [2020-10-23 18:29:11,579 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-23 18:29:11,579 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 43 transitions. [2020-10-23 18:29:11,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2020-10-23 18:29:11,580 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:11,580 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] [2020-10-23 18:29:11,581 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-23 18:29:11,581 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:11,582 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:11,582 INFO L82 PathProgramCache]: Analyzing trace with hash 1417062500, now seen corresponding path program 1 times [2020-10-23 18:29:11,583 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:11,583 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [27235198] [2020-10-23 18:29:11,583 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:11,619 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,676 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:11,680 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,706 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:11,713 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:11,751 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:11,751 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [27235198] [2020-10-23 18:29:11,751 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:29:11,752 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2020-10-23 18:29:11,752 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2024803657] [2020-10-23 18:29:11,754 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-23 18:29:11,754 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:11,755 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-23 18:29:11,755 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:29:11,755 INFO L87 Difference]: Start difference. First operand 34 states and 43 transitions. Second operand 7 states. [2020-10-23 18:29:12,055 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:12,056 INFO L93 Difference]: Finished difference Result 60 states and 78 transitions. [2020-10-23 18:29:12,056 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2020-10-23 18:29:12,056 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 22 [2020-10-23 18:29:12,057 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:12,058 INFO L225 Difference]: With dead ends: 60 [2020-10-23 18:29:12,058 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 18:29:12,059 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=75, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:29:12,060 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 18:29:12,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 35. [2020-10-23 18:29:12,068 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 35 states. [2020-10-23 18:29:12,069 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 44 transitions. [2020-10-23 18:29:12,069 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 44 transitions. Word has length 22 [2020-10-23 18:29:12,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:12,069 INFO L481 AbstractCegarLoop]: Abstraction has 35 states and 44 transitions. [2020-10-23 18:29:12,070 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-23 18:29:12,070 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 44 transitions. [2020-10-23 18:29:12,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:29:12,071 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:12,071 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] [2020-10-23 18:29:12,071 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-23 18:29:12,071 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:12,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:12,072 INFO L82 PathProgramCache]: Analyzing trace with hash 1582015078, now seen corresponding path program 1 times [2020-10-23 18:29:12,073 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:12,073 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [166772086] [2020-10-23 18:29:12,073 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:12,101 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,146 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,168 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:12,180 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,208 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:12,208 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [166772086] [2020-10-23 18:29:12,208 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:29:12,209 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-23 18:29:12,209 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1206729595] [2020-10-23 18:29:12,209 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-23 18:29:12,210 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:12,210 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-23 18:29:12,210 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-23 18:29:12,211 INFO L87 Difference]: Start difference. First operand 35 states and 44 transitions. Second operand 5 states. [2020-10-23 18:29:12,379 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:12,380 INFO L93 Difference]: Finished difference Result 67 states and 87 transitions. [2020-10-23 18:29:12,380 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-23 18:29:12,380 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 29 [2020-10-23 18:29:12,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:12,382 INFO L225 Difference]: With dead ends: 67 [2020-10-23 18:29:12,382 INFO L226 Difference]: Without dead ends: 41 [2020-10-23 18:29:12,383 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2020-10-23 18:29:12,383 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 41 states. [2020-10-23 18:29:12,389 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 41 to 40. [2020-10-23 18:29:12,389 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 40 states. [2020-10-23 18:29:12,390 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 40 states to 40 states and 50 transitions. [2020-10-23 18:29:12,391 INFO L78 Accepts]: Start accepts. Automaton has 40 states and 50 transitions. Word has length 29 [2020-10-23 18:29:12,391 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:12,391 INFO L481 AbstractCegarLoop]: Abstraction has 40 states and 50 transitions. [2020-10-23 18:29:12,391 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-23 18:29:12,391 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states and 50 transitions. [2020-10-23 18:29:12,392 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:29:12,392 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:12,393 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] [2020-10-23 18:29:12,393 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-23 18:29:12,393 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:12,393 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:12,394 INFO L82 PathProgramCache]: Analyzing trace with hash 560946724, now seen corresponding path program 1 times [2020-10-23 18:29:12,394 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:12,394 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [917553807] [2020-10-23 18:29:12,394 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:12,418 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,507 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:12,509 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,530 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:12,540 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:12,591 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:12,592 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [917553807] [2020-10-23 18:29:12,592 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-23 18:29:12,592 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2020-10-23 18:29:12,593 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [98415281] [2020-10-23 18:29:12,593 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:29:12,593 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:12,594 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:29:12,594 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:29:12,594 INFO L87 Difference]: Start difference. First operand 40 states and 50 transitions. Second operand 10 states. [2020-10-23 18:29:12,957 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:12,958 INFO L93 Difference]: Finished difference Result 77 states and 102 transitions. [2020-10-23 18:29:12,958 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:29:12,958 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 29 [2020-10-23 18:29:12,959 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:12,959 INFO L225 Difference]: With dead ends: 77 [2020-10-23 18:29:12,960 INFO L226 Difference]: Without dead ends: 62 [2020-10-23 18:29:12,960 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 18 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:29:12,961 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 62 states. [2020-10-23 18:29:12,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 62 to 49. [2020-10-23 18:29:12,968 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 49 states. [2020-10-23 18:29:12,969 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 61 transitions. [2020-10-23 18:29:12,970 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 61 transitions. Word has length 29 [2020-10-23 18:29:12,970 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:12,970 INFO L481 AbstractCegarLoop]: Abstraction has 49 states and 61 transitions. [2020-10-23 18:29:12,970 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:29:12,970 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 61 transitions. [2020-10-23 18:29:12,971 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2020-10-23 18:29:12,971 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:12,971 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] [2020-10-23 18:29:12,972 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-23 18:29:12,972 INFO L429 AbstractCegarLoop]: === Iteration 5 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:12,972 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:12,972 INFO L82 PathProgramCache]: Analyzing trace with hash -1959013210, now seen corresponding path program 1 times [2020-10-23 18:29:12,973 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:12,973 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2027573975] [2020-10-23 18:29:12,973 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:12,992 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,035 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:13,037 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,057 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:13,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,122 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:13,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2027573975] [2020-10-23 18:29:13,122 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [71268457] [2020-10-23 18:29:13,123 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:13,282 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,285 INFO L263 TraceCheckSpWp]: Trace formula consists of 162 conjuncts, 5 conjunts are in the unsatisfiable core [2020-10-23 18:29:13,292 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:29:13,362 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:13,363 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:29:13,363 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 6] total 9 [2020-10-23 18:29:13,363 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [816529908] [2020-10-23 18:29:13,364 INFO L461 AbstractCegarLoop]: Interpolant automaton has 9 states [2020-10-23 18:29:13,364 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:13,365 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2020-10-23 18:29:13,365 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=54, Unknown=0, NotChecked=0, Total=72 [2020-10-23 18:29:13,365 INFO L87 Difference]: Start difference. First operand 49 states and 61 transitions. Second operand 9 states. [2020-10-23 18:29:13,603 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:13,603 INFO L93 Difference]: Finished difference Result 80 states and 102 transitions. [2020-10-23 18:29:13,604 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2020-10-23 18:29:13,604 INFO L78 Accepts]: Start accepts. Automaton has 9 states. Word has length 29 [2020-10-23 18:29:13,604 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:13,605 INFO L225 Difference]: With dead ends: 80 [2020-10-23 18:29:13,606 INFO L226 Difference]: Without dead ends: 58 [2020-10-23 18:29:13,606 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=40, Invalid=116, Unknown=0, NotChecked=0, Total=156 [2020-10-23 18:29:13,607 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2020-10-23 18:29:13,612 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 51. [2020-10-23 18:29:13,613 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 51 states. [2020-10-23 18:29:13,614 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 51 states to 51 states and 63 transitions. [2020-10-23 18:29:13,614 INFO L78 Accepts]: Start accepts. Automaton has 51 states and 63 transitions. Word has length 29 [2020-10-23 18:29:13,614 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:13,614 INFO L481 AbstractCegarLoop]: Abstraction has 51 states and 63 transitions. [2020-10-23 18:29:13,614 INFO L482 AbstractCegarLoop]: Interpolant automaton has 9 states. [2020-10-23 18:29:13,615 INFO L276 IsEmpty]: Start isEmpty. Operand 51 states and 63 transitions. [2020-10-23 18:29:13,616 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2020-10-23 18:29:13,616 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:13,616 INFO L422 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:29:13,831 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4,2 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:13,832 INFO L429 AbstractCegarLoop]: === Iteration 6 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:13,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:13,833 INFO L82 PathProgramCache]: Analyzing trace with hash -1477512026, now seen corresponding path program 1 times [2020-10-23 18:29:13,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:13,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [833140367] [2020-10-23 18:29:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:13,854 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,915 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:13,917 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:13,940 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:13,954 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:14,044 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:14,044 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [833140367] [2020-10-23 18:29:14,045 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [459027775] [2020-10-23 18:29:14,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:14,203 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:14,204 INFO L263 TraceCheckSpWp]: Trace formula consists of 200 conjuncts, 6 conjunts are in the unsatisfiable core [2020-10-23 18:29:14,208 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:29:14,267 INFO L134 CoverageAnalysis]: Checked inductivity of 9 backedges. 0 proven. 9 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:14,268 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:29:14,268 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 7] total 10 [2020-10-23 18:29:14,268 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1578980743] [2020-10-23 18:29:14,269 INFO L461 AbstractCegarLoop]: Interpolant automaton has 10 states [2020-10-23 18:29:14,269 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:14,269 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2020-10-23 18:29:14,270 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2020-10-23 18:29:14,270 INFO L87 Difference]: Start difference. First operand 51 states and 63 transitions. Second operand 10 states. [2020-10-23 18:29:14,559 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:14,559 INFO L93 Difference]: Finished difference Result 93 states and 118 transitions. [2020-10-23 18:29:14,560 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2020-10-23 18:29:14,560 INFO L78 Accepts]: Start accepts. Automaton has 10 states. Word has length 36 [2020-10-23 18:29:14,560 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:14,561 INFO L225 Difference]: With dead ends: 93 [2020-10-23 18:29:14,561 INFO L226 Difference]: Without dead ends: 67 [2020-10-23 18:29:14,562 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 50 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2020-10-23 18:29:14,562 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 67 states. [2020-10-23 18:29:14,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 67 to 58. [2020-10-23 18:29:14,569 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 58 states. [2020-10-23 18:29:14,570 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 72 transitions. [2020-10-23 18:29:14,570 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 72 transitions. Word has length 36 [2020-10-23 18:29:14,571 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:14,571 INFO L481 AbstractCegarLoop]: Abstraction has 58 states and 72 transitions. [2020-10-23 18:29:14,571 INFO L482 AbstractCegarLoop]: Interpolant automaton has 10 states. [2020-10-23 18:29:14,571 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 72 transitions. [2020-10-23 18:29:14,572 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 44 [2020-10-23 18:29:14,572 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:14,572 INFO L422 BasicCegarLoop]: trace histogram [3, 3, 3, 3, 3, 3, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:29:14,786 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5,3 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:14,787 INFO L429 AbstractCegarLoop]: === Iteration 7 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:14,788 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:14,788 INFO L82 PathProgramCache]: Analyzing trace with hash 1429432292, now seen corresponding path program 2 times [2020-10-23 18:29:14,788 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:14,789 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [514386240] [2020-10-23 18:29:14,789 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:14,811 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:14,853 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:14,855 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:14,872 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:14,885 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:14,960 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:14,960 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [514386240] [2020-10-23 18:29:14,961 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [2125101963] [2020-10-23 18:29:14,961 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:15,111 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2020-10-23 18:29:15,111 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:29:15,112 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 7 conjunts are in the unsatisfiable core [2020-10-23 18:29:15,116 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:29:15,186 INFO L134 CoverageAnalysis]: Checked inductivity of 24 backedges. 0 proven. 24 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:15,187 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:29:15,187 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 8] total 11 [2020-10-23 18:29:15,188 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1918743851] [2020-10-23 18:29:15,189 INFO L461 AbstractCegarLoop]: Interpolant automaton has 11 states [2020-10-23 18:29:15,189 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:15,190 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2020-10-23 18:29:15,191 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=81, Unknown=0, NotChecked=0, Total=110 [2020-10-23 18:29:15,192 INFO L87 Difference]: Start difference. First operand 58 states and 72 transitions. Second operand 11 states. [2020-10-23 18:29:15,554 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:15,555 INFO L93 Difference]: Finished difference Result 100 states and 127 transitions. [2020-10-23 18:29:15,555 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2020-10-23 18:29:15,555 INFO L78 Accepts]: Start accepts. Automaton has 11 states. Word has length 43 [2020-10-23 18:29:15,557 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:15,558 INFO L225 Difference]: With dead ends: 100 [2020-10-23 18:29:15,558 INFO L226 Difference]: Without dead ends: 74 [2020-10-23 18:29:15,561 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 58 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=53, Invalid=157, Unknown=0, NotChecked=0, Total=210 [2020-10-23 18:29:15,561 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2020-10-23 18:29:15,573 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 65. [2020-10-23 18:29:15,573 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 65 states. [2020-10-23 18:29:15,574 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 81 transitions. [2020-10-23 18:29:15,574 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 81 transitions. Word has length 43 [2020-10-23 18:29:15,574 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:15,574 INFO L481 AbstractCegarLoop]: Abstraction has 65 states and 81 transitions. [2020-10-23 18:29:15,575 INFO L482 AbstractCegarLoop]: Interpolant automaton has 11 states. [2020-10-23 18:29:15,575 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 81 transitions. [2020-10-23 18:29:15,576 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2020-10-23 18:29:15,576 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:15,576 INFO L422 BasicCegarLoop]: trace histogram [4, 4, 4, 4, 4, 4, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:29:15,779 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6,4 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:15,779 INFO L429 AbstractCegarLoop]: === Iteration 8 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:15,780 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:15,780 INFO L82 PathProgramCache]: Analyzing trace with hash 1126200038, now seen corresponding path program 3 times [2020-10-23 18:29:15,781 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:15,781 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [12772681] [2020-10-23 18:29:15,781 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:15,807 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:15,875 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:15,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:15,901 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:15,920 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:16,012 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 0 proven. 46 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-23 18:29:16,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [12772681] [2020-10-23 18:29:16,013 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [782474025] [2020-10-23 18:29:16,013 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 5 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:16,452 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 4 check-sat command(s) [2020-10-23 18:29:16,452 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2020-10-23 18:29:16,456 INFO L263 TraceCheckSpWp]: Trace formula consists of 241 conjuncts, 29 conjunts are in the unsatisfiable core [2020-10-23 18:29:16,460 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:29:16,567 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,571 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 16 treesize of output 17 [2020-10-23 18:29:16,572 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,582 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,582 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,582 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:23, output treesize:23 [2020-10-23 18:29:16,623 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_22|], 10=[|v_#memory_int_24|]} [2020-10-23 18:29:16,629 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 18:29:16,650 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,656 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,657 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,658 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,659 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,661 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,662 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,663 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,664 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,665 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,682 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,683 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,684 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 10 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 46 treesize of output 41 [2020-10-23 18:29:16,686 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,709 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,714 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,714 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:66, output treesize:23 [2020-10-23 18:29:16,739 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,741 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,744 INFO L190 IndexEqualityManager]: detected not equals via solver [2020-10-23 18:29:16,746 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,746 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 3 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2020-10-23 18:29:16,748 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,757 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:16,758 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:16,759 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:42, output treesize:20 [2020-10-23 18:29:16,924 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:29:16,957 INFO L134 CoverageAnalysis]: Checked inductivity of 46 backedges. 30 proven. 7 refuted. 0 times theorem prover too weak. 9 trivial. 0 not checked. [2020-10-23 18:29:16,958 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:29:16,958 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 12] total 21 [2020-10-23 18:29:16,958 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [6819725] [2020-10-23 18:29:16,959 INFO L461 AbstractCegarLoop]: Interpolant automaton has 21 states [2020-10-23 18:29:16,959 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:16,960 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2020-10-23 18:29:16,960 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=367, Unknown=0, NotChecked=0, Total=420 [2020-10-23 18:29:16,960 INFO L87 Difference]: Start difference. First operand 65 states and 81 transitions. Second operand 21 states. [2020-10-23 18:29:18,636 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:18,637 INFO L93 Difference]: Finished difference Result 119 states and 155 transitions. [2020-10-23 18:29:18,638 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2020-10-23 18:29:18,638 INFO L78 Accepts]: Start accepts. Automaton has 21 states. Word has length 50 [2020-10-23 18:29:18,638 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:18,639 INFO L225 Difference]: With dead ends: 119 [2020-10-23 18:29:18,639 INFO L226 Difference]: Without dead ends: 93 [2020-10-23 18:29:18,641 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 89 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 40 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 278 ImplicationChecksByTransitivity, 1.2s TimeCoverageRelationStatistics Valid=278, Invalid=1444, Unknown=0, NotChecked=0, Total=1722 [2020-10-23 18:29:18,646 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2020-10-23 18:29:18,655 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 66. [2020-10-23 18:29:18,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 66 states. [2020-10-23 18:29:18,661 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 66 states to 66 states and 83 transitions. [2020-10-23 18:29:18,661 INFO L78 Accepts]: Start accepts. Automaton has 66 states and 83 transitions. Word has length 50 [2020-10-23 18:29:18,661 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:18,661 INFO L481 AbstractCegarLoop]: Abstraction has 66 states and 83 transitions. [2020-10-23 18:29:18,662 INFO L482 AbstractCegarLoop]: Interpolant automaton has 21 states. [2020-10-23 18:29:18,662 INFO L276 IsEmpty]: Start isEmpty. Operand 66 states and 83 transitions. [2020-10-23 18:29:18,662 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 18:29:18,663 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:18,663 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:29:18,880 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7,5 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:18,881 INFO L429 AbstractCegarLoop]: === Iteration 9 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:18,882 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:18,882 INFO L82 PathProgramCache]: Analyzing trace with hash 655349798, now seen corresponding path program 1 times [2020-10-23 18:29:18,882 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:18,883 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [545519284] [2020-10-23 18:29:18,883 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:18,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:19,285 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-23 18:29:19,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:19,306 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 6 [2020-10-23 18:29:19,350 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:19,567 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-23 18:29:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [545519284] [2020-10-23 18:29:19,567 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [335652147] [2020-10-23 18:29:19,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 6 with z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:19,744 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-23 18:29:19,747 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 40 conjunts are in the unsatisfiable core [2020-10-23 18:29:19,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2020-10-23 18:29:19,772 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2020-10-23 18:29:19,772 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,774 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,774 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,774 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2020-10-23 18:29:19,785 INFO L350 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,785 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 11 treesize of output 15 [2020-10-23 18:29:19,786 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,788 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,788 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,789 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:11, output treesize:4 [2020-10-23 18:29:19,821 INFO L350 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2020-10-23 18:29:19,822 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 16 treesize of output 17 [2020-10-23 18:29:19,822 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,829 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,829 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,829 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:21, output treesize:21 [2020-10-23 18:29:19,864 INFO L441 ElimStorePlain]: Different costs {2=[|v_#memory_int_26|], 10=[|v_#memory_int_28|]} [2020-10-23 18:29:19,867 INFO L545 ElimStorePlain]: Start of recursive call 2: 1 dim-0 vars, End of recursive call: 1 dim-0 vars, and 1 xjuncts. [2020-10-23 18:29:19,886 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,955 INFO L350 Elim1Store]: treesize reduction 288, result has 10.8 percent of original size [2020-10-23 18:29:19,956 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 5 case distinctions, treesize of input 46 treesize of output 41 [2020-10-23 18:29:19,957 INFO L545 ElimStorePlain]: Start of recursive call 3: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,967 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,969 INFO L545 ElimStorePlain]: Start of recursive call 1: 1 dim-0 vars, 2 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,970 INFO L244 ElimStorePlain]: Needed 3 recursive calls to eliminate 3 variables, input treesize:64, output treesize:21 [2020-10-23 18:29:19,983 INFO L350 Elim1Store]: treesize reduction 9, result has 10.0 percent of original size [2020-10-23 18:29:19,983 INFO L384 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 2 select indices, 2 select index equivalence classes, 1 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 36 treesize of output 23 [2020-10-23 18:29:19,984 INFO L545 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,991 INFO L625 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2020-10-23 18:29:19,992 INFO L545 ElimStorePlain]: Start of recursive call 1: 2 dim-0 vars, 1 dim-2 vars, End of recursive call: and 1 xjuncts. [2020-10-23 18:29:19,993 INFO L244 ElimStorePlain]: Needed 2 recursive calls to eliminate 3 variables, input treesize:40, output treesize:17 [2020-10-23 18:29:20,179 INFO L603 QuantifierPusher]: Distributing 2 conjuncts over 3 disjuncts [2020-10-23 18:29:20,191 INFO L134 CoverageAnalysis]: Checked inductivity of 75 backedges. 44 proven. 7 refuted. 0 times theorem prover too weak. 24 trivial. 0 not checked. [2020-10-23 18:29:20,192 INFO L219 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2020-10-23 18:29:20,192 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 22 [2020-10-23 18:29:20,192 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1937653981] [2020-10-23 18:29:20,193 INFO L461 AbstractCegarLoop]: Interpolant automaton has 22 states [2020-10-23 18:29:20,193 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-23 18:29:20,194 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2020-10-23 18:29:20,194 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=47, Invalid=415, Unknown=0, NotChecked=0, Total=462 [2020-10-23 18:29:20,195 INFO L87 Difference]: Start difference. First operand 66 states and 83 transitions. Second operand 22 states. [2020-10-23 18:29:21,563 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-23 18:29:21,563 INFO L93 Difference]: Finished difference Result 91 states and 119 transitions. [2020-10-23 18:29:21,564 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2020-10-23 18:29:21,564 INFO L78 Accepts]: Start accepts. Automaton has 22 states. Word has length 57 [2020-10-23 18:29:21,564 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-23 18:29:21,565 INFO L225 Difference]: With dead ends: 91 [2020-10-23 18:29:21,565 INFO L226 Difference]: Without dead ends: 76 [2020-10-23 18:29:21,568 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 92 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 33 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 113 ImplicationChecksByTransitivity, 1.0s TimeCoverageRelationStatistics Valid=155, Invalid=1035, Unknown=0, NotChecked=0, Total=1190 [2020-10-23 18:29:21,568 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 76 states. [2020-10-23 18:29:21,581 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 76 to 68. [2020-10-23 18:29:21,581 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 68 states. [2020-10-23 18:29:21,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 85 transitions. [2020-10-23 18:29:21,586 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 85 transitions. Word has length 57 [2020-10-23 18:29:21,586 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-23 18:29:21,587 INFO L481 AbstractCegarLoop]: Abstraction has 68 states and 85 transitions. [2020-10-23 18:29:21,587 INFO L482 AbstractCegarLoop]: Interpolant automaton has 22 states. [2020-10-23 18:29:21,587 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 85 transitions. [2020-10-23 18:29:21,590 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 58 [2020-10-23 18:29:21,590 INFO L414 BasicCegarLoop]: Found error trace [2020-10-23 18:29:21,590 INFO L422 BasicCegarLoop]: trace histogram [5, 5, 5, 5, 5, 5, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-23 18:29:21,805 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8,6 z3 -smt2 -in SMTLIB2_COMPLIANT=true [2020-10-23 18:29:21,806 INFO L429 AbstractCegarLoop]: === Iteration 10 === [reach_errorErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2020-10-23 18:29:21,806 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-23 18:29:21,807 INFO L82 PathProgramCache]: Analyzing trace with hash 657196840, now seen corresponding path program 1 times [2020-10-23 18:29:21,807 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-23 18:29:21,808 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1625630295] [2020-10-23 18:29:21,808 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-23 18:29:21,895 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:29:21,895 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:29:21,976 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-23 18:29:21,977 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-23 18:29:22,034 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-23 18:29:22,035 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-23 18:29:22,035 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2020-10-23 18:29:22,111 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.10 06:29:22 BoogieIcfgContainer [2020-10-23 18:29:22,111 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-23 18:29:22,112 INFO L168 Benchmark]: Toolchain (without parser) took 12831.66 ms. Allocated memory was 154.1 MB in the beginning and 270.5 MB in the end (delta: 116.4 MB). Free memory was 128.7 MB in the beginning and 222.9 MB in the end (delta: -94.2 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:29:22,113 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:29:22,113 INFO L168 Benchmark]: CACSL2BoogieTranslator took 592.39 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:29:22,114 INFO L168 Benchmark]: Boogie Preprocessor took 69.03 ms. Allocated memory is still 154.1 MB. Free memory was 106.2 MB in the beginning and 103.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. [2020-10-23 18:29:22,114 INFO L168 Benchmark]: RCFGBuilder took 765.40 ms. Allocated memory is still 154.1 MB. Free memory was 103.5 MB in the beginning and 96.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. [2020-10-23 18:29:22,115 INFO L168 Benchmark]: TraceAbstraction took 11393.64 ms. Allocated memory was 154.1 MB in the beginning and 270.5 MB in the end (delta: 116.4 MB). Free memory was 95.9 MB in the beginning and 222.9 MB in the end (delta: -127.0 MB). There was no memory consumed. Max. memory is 8.0 GB. [2020-10-23 18:29:22,118 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 154.1 MB. Free memory is still 126.1 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 592.39 ms. Allocated memory is still 154.1 MB. Free memory was 128.2 MB in the beginning and 106.2 MB in the end (delta: 22.0 MB). Peak memory consumption was 22.0 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 69.03 ms. Allocated memory is still 154.1 MB. Free memory was 106.2 MB in the beginning and 103.5 MB in the end (delta: 2.7 MB). Peak memory consumption was 3.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 765.40 ms. Allocated memory is still 154.1 MB. Free memory was 103.5 MB in the beginning and 96.4 MB in the end (delta: 7.0 MB). Peak memory consumption was 7.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 11393.64 ms. Allocated memory was 154.1 MB in the beginning and 270.5 MB in the end (delta: 116.4 MB). Free memory was 95.9 MB in the beginning and 222.9 MB in the end (delta: -127.0 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 12]: a call of __VERIFIER_error() is reachable a call of __VERIFIER_error() is reachable We found a FailurePath: [L599] const int len = 5; VAL [len=5] [L600] CALL, EXPR dll_create(len) VAL [\old(len)=5] [L579] DLL head = ((void *)0); VAL [\old(len)=5, head={0:0}, len=5] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=5, __VERIFIER_nondet_int() == len? 1 : 0=1, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L590] COND FALSE !(\read(head)) VAL [\old(len)=5, head={0:0}, len=5, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-1:0}, new_head={-1:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=4, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L590] COND TRUE \read(head) [L591] head->prev = new_head VAL [\old(len)=5, head={-1:0}, len=4, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-2:0}, new_head={-2:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=3, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L590] COND TRUE \read(head) [L591] head->prev = new_head VAL [\old(len)=5, head={-2:0}, len=3, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-3:0}, new_head={-3:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=2, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L590] COND TRUE \read(head) [L591] head->prev = new_head VAL [\old(len)=5, head={-3:0}, len=2, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-4:0}, new_head={-4:0}] [L580] COND TRUE len > 0 [L581] DLL new_head = (DLL) malloc(sizeof(struct node)); VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L582] COND FALSE !(((void *)0) == new_head) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L585] new_head->data_0 = 0 [L586] new_head->data_1 = 0 [L587] EXPR __VERIFIER_nondet_int() == len? 1 : 0 VAL [\old(len)=5, __VERIFIER_nondet_int()=1, __VERIFIER_nondet_int() == len? 1 : 0=1, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L587] new_head->data_2 = __VERIFIER_nondet_int() == len? 1 : 0 [L588] new_head->next = head [L589] new_head->prev = ((void *)0) VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L590] COND TRUE \read(head) [L591] head->prev = new_head VAL [\old(len)=5, head={-4:0}, len=1, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L593] head = new_head [L594] len-- VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L580] COND FALSE !(len > 0) VAL [\old(len)=5, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L596] return head; VAL [\old(len)=5, \result={-5:0}, head={-5:0}, len=0, malloc(sizeof(struct node))={-5:0}, new_head={-5:0}] [L600] RET, EXPR dll_create(len) VAL [dll_create(len)={-5:0}, len=5] [L600] DLL head = dll_create(len); [L601] head->next VAL [head={-5:0}, head->next={-4:0}, len=5] [L601] COND TRUE head->next [L602] EXPR head->data_0 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 [L602] EXPR head->data_1 [L602] EXPR 0 != head->data_0 || 0 != head->data_1 VAL [0 != head->data_0 || 0 != head->data_1=0, head={-5:0}, head->data_0=0, head->data_1=0, len=5] [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L602] EXPR head->data_2 [L602] 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 VAL [0 != head->data_0 || 0 != head->data_1=0, 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2=1, head={-5:0}, head->data_0=0, head->data_1=0, head->data_2=1, len=5] [L602] COND TRUE 0 != head->data_0 || 0 != head->data_1 || 0 != head->data_2 [L616] CALL reach_error() [L12] COND FALSE !(0) [L12] __assert_fail ("0", "dll_nullified-1.c", 3, __extension__ __PRETTY_FUNCTION__) - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 52 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 11.2s, OverallIterations: 10, TraceHistogramMax: 5, AutomataDifference: 5.1s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 306 SDtfs, 582 SDslu, 1313 SDs, 0 SdLazy, 1901 SolverSat, 230 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 2.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 381 GetRequests, 243 SyntacticMatches, 0 SemanticMatches, 138 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 430 ImplicationChecksByTransitivity, 3.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=68occurred in iteration=9, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 9 MinimizatonAttempts, 97 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.8s SatisfiabilityAnalysisTime, 2.9s InterpolantComputationTime, 589 NumberOfCodeBlocks, 582 NumberOfCodeBlocksAsserted, 19 NumberOfCheckSat, 518 ConstructedInterpolants, 0 QuantifiedInterpolants, 89775 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1170 ConjunctsInSsa, 87 ConjunctsInUnsatCore, 14 InterpolantComputations, 4 PerfectInterpolantSequences, 177/312 InterpolantCoveringCapability, 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...