/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-ext-properties/list-ext.i -------------------------------------------------------------------------------- This is Ultimate 0.2.1-dev-b7b32d2 [2021-02-21 16:13:47,960 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-02-21 16:13:47,963 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-02-21 16:13:47,996 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-02-21 16:13:47,997 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-02-21 16:13:47,998 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-02-21 16:13:48,000 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-02-21 16:13:48,002 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-02-21 16:13:48,005 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-02-21 16:13:48,013 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-02-21 16:13:48,015 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-02-21 16:13:48,016 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-02-21 16:13:48,016 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-02-21 16:13:48,017 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-02-21 16:13:48,019 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-02-21 16:13:48,020 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-02-21 16:13:48,021 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-02-21 16:13:48,022 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-02-21 16:13:48,024 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-02-21 16:13:48,026 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-02-21 16:13:48,028 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-02-21 16:13:48,029 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-02-21 16:13:48,031 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-02-21 16:13:48,032 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-02-21 16:13:48,035 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-02-21 16:13:48,035 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-02-21 16:13:48,035 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-02-21 16:13:48,036 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-02-21 16:13:48,037 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-02-21 16:13:48,038 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-02-21 16:13:48,038 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-02-21 16:13:48,039 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-02-21 16:13:48,040 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-02-21 16:13:48,041 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-02-21 16:13:48,043 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-02-21 16:13:48,043 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-02-21 16:13:48,044 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-02-21 16:13:48,044 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-02-21 16:13:48,045 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-02-21 16:13:48,046 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-02-21 16:13:48,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-02-21 16:13:48,048 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 [2021-02-21 16:13:48,082 INFO L113 SettingsManager]: Loading preferences was successful [2021-02-21 16:13:48,083 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-02-21 16:13:48,086 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-02-21 16:13:48,086 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-02-21 16:13:48,086 INFO L138 SettingsManager]: * Use SBE=true [2021-02-21 16:13:48,087 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-02-21 16:13:48,087 INFO L138 SettingsManager]: * sizeof long=4 [2021-02-21 16:13:48,089 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-02-21 16:13:48,089 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-02-21 16:13:48,089 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-02-21 16:13:48,089 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-02-21 16:13:48,090 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-02-21 16:13:48,090 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-02-21 16:13:48,093 INFO L138 SettingsManager]: * sizeof long double=12 [2021-02-21 16:13:48,094 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-02-21 16:13:48,094 INFO L138 SettingsManager]: * Use constant arrays=true [2021-02-21 16:13:48,094 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-02-21 16:13:48,094 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-02-21 16:13:48,095 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-02-21 16:13:48,095 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-02-21 16:13:48,095 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:48,095 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-02-21 16:13:48,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-02-21 16:13:48,096 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-02-21 16:13:48,096 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-02-21 16:13:48,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-02-21 16:13:48,097 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-02-21 16:13:48,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-02-21 16:13:48,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release [2021-02-21 16:13:48,461 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-02-21 16:13:48,495 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-02-21 16:13:48,498 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-02-21 16:13:48,500 INFO L271 PluginConnector]: Initializing CDTParser... [2021-02-21 16:13:48,501 INFO L275 PluginConnector]: CDTParser initialized [2021-02-21 16:13:48,502 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../../../trunk/examples/svcomp/list-ext-properties/list-ext.i [2021-02-21 16:13:48,602 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c8c3dae/239f61f3e49c492c94629637bc7cf55f/FLAG5757d844e [2021-02-21 16:13:49,385 INFO L306 CDTParser]: Found 1 translation units. [2021-02-21 16:13:49,386 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i [2021-02-21 16:13:49,407 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c8c3dae/239f61f3e49c492c94629637bc7cf55f/FLAG5757d844e [2021-02-21 16:13:49,687 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/a1c8c3dae/239f61f3e49c492c94629637bc7cf55f [2021-02-21 16:13:49,690 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-02-21 16:13:49,704 INFO L131 ToolchainWalker]: Walking toolchain with 4 elements. [2021-02-21 16:13:49,706 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:49,706 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-02-21 16:13:49,710 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-02-21 16:13:49,711 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,712 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6d8efafc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:49, skipping insertion in model container [2021-02-21 16:13:49,712 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.02 04:13:49" (1/1) ... [2021-02-21 16:13:49,721 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-02-21 16:13:49,760 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-02-21 16:13:50,127 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i[23551,23564] [2021-02-21 16:13:50,139 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:50,152 INFO L203 MainTranslator]: Completed pre-run [2021-02-21 16:13:50,224 WARN L226 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /storage/repos/ultimate/trunk/examples/svcomp/list-ext-properties/list-ext.i[23551,23564] [2021-02-21 16:13:50,226 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-02-21 16:13:50,282 INFO L208 MainTranslator]: Completed translation [2021-02-21 16:13:50,283 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50 WrapperNode [2021-02-21 16:13:50,283 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-02-21 16:13:50,284 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-02-21 16:13:50,284 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-02-21 16:13:50,284 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-02-21 16:13:50,297 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,297 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,313 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,313 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,331 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,337 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,341 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... [2021-02-21 16:13:50,348 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-02-21 16:13:50,349 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-02-21 16:13:50,349 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-02-21 16:13:50,349 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-02-21 16:13:50,350 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-02-21 16:13:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-02-21 16:13:50,444 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-02-21 16:13:50,445 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-02-21 16:13:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2021-02-21 16:13:50,446 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-02-21 16:13:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-02-21 16:13:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2021-02-21 16:13:50,446 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2021-02-21 16:13:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2021-02-21 16:13:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2021-02-21 16:13:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-02-21 16:13:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-02-21 16:13:50,447 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-02-21 16:13:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-02-21 16:13:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-02-21 16:13:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-02-21 16:13:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-02-21 16:13:50,448 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-02-21 16:13:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-02-21 16:13:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-02-21 16:13:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-02-21 16:13:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-02-21 16:13:50,449 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-02-21 16:13:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-02-21 16:13:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-02-21 16:13:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-02-21 16:13:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-02-21 16:13:50,450 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-02-21 16:13:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-02-21 16:13:50,470 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-02-21 16:13:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-02-21 16:13:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-02-21 16:13:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-02-21 16:13:50,471 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-02-21 16:13:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-02-21 16:13:50,472 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-02-21 16:13:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-02-21 16:13:50,475 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-02-21 16:13:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-02-21 16:13:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-02-21 16:13:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-02-21 16:13:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-02-21 16:13:50,476 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-02-21 16:13:50,477 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-02-21 16:13:50,478 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-02-21 16:13:50,479 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-02-21 16:13:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-02-21 16:13:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-02-21 16:13:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-02-21 16:13:50,480 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-02-21 16:13:50,481 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-02-21 16:13:50,482 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-02-21 16:13:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-02-21 16:13:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-02-21 16:13:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-02-21 16:13:50,483 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-02-21 16:13:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-02-21 16:13:50,484 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-02-21 16:13:50,485 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-02-21 16:13:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-02-21 16:13:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-02-21 16:13:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-02-21 16:13:50,486 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-02-21 16:13:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-02-21 16:13:50,487 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-02-21 16:13:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-02-21 16:13:50,488 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-02-21 16:13:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-02-21 16:13:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-02-21 16:13:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-02-21 16:13:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-02-21 16:13:50,489 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-02-21 16:13:50,490 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-02-21 16:13:50,491 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-02-21 16:13:50,492 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-02-21 16:13:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-02-21 16:13:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-02-21 16:13:50,493 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-02-21 16:13:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-02-21 16:13:50,494 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-02-21 16:13:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-02-21 16:13:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-02-21 16:13:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-02-21 16:13:50,495 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-02-21 16:13:50,496 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2021-02-21 16:13:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-02-21 16:13:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-02-21 16:13:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2021-02-21 16:13:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-02-21 16:13:50,497 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-02-21 16:13:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-02-21 16:13:50,501 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-02-21 16:13:50,868 INFO L759 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2021-02-21 16:13:51,079 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-02-21 16:13:51,080 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-02-21 16:13:51,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:51 BoogieIcfgContainer [2021-02-21 16:13:51,082 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-02-21 16:13:51,083 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-02-21 16:13:51,083 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-02-21 16:13:51,087 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-02-21 16:13:51,087 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.02 04:13:49" (1/3) ... [2021-02-21 16:13:51,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6c85b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:51, skipping insertion in model container [2021-02-21 16:13:51,088 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.02 04:13:50" (2/3) ... [2021-02-21 16:13:51,088 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6a6c85b1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.02 04:13:51, skipping insertion in model container [2021-02-21 16:13:51,089 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.02 04:13:51" (3/3) ... [2021-02-21 16:13:51,090 INFO L111 eAbstractionObserver]: Analyzing ICFG list-ext.i [2021-02-21 16:13:51,097 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-02-21 16:13:51,102 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 1 error locations. [2021-02-21 16:13:51,120 INFO L253 AbstractCegarLoop]: Starting to check reachability of 1 error locations. [2021-02-21 16:13:51,146 INFO L376 AbstractCegarLoop]: Interprodecural is true [2021-02-21 16:13:51,146 INFO L377 AbstractCegarLoop]: Hoare is true [2021-02-21 16:13:51,146 INFO L378 AbstractCegarLoop]: Compute interpolants for FPandBP [2021-02-21 16:13:51,146 INFO L379 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2021-02-21 16:13:51,146 INFO L380 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2021-02-21 16:13:51,147 INFO L381 AbstractCegarLoop]: Difference is false [2021-02-21 16:13:51,147 INFO L382 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2021-02-21 16:13:51,147 INFO L386 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2021-02-21 16:13:51,166 INFO L276 IsEmpty]: Start isEmpty. Operand 40 states. [2021-02-21 16:13:51,172 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-02-21 16:13:51,173 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:51,173 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-02-21 16:13:51,174 INFO L428 AbstractCegarLoop]: === Iteration 1 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:51,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:51,180 INFO L82 PathProgramCache]: Analyzing trace with hash -167632404, now seen corresponding path program 1 times [2021-02-21 16:13:51,190 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:51,191 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [993084114] [2021-02-21 16:13:51,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:51,307 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,360 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,361 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,362 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,362 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,391 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:51,397 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,408 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,408 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,412 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:51,413 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [993084114] [2021-02-21 16:13:51,414 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:51,414 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-02-21 16:13:51,415 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [624121363] [2021-02-21 16:13:51,421 INFO L460 AbstractCegarLoop]: Interpolant automaton has 3 states [2021-02-21 16:13:51,422 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:51,442 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-02-21 16:13:51,443 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:51,445 INFO L87 Difference]: Start difference. First operand 40 states. Second operand 3 states. [2021-02-21 16:13:51,622 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:51,622 INFO L93 Difference]: Finished difference Result 65 states and 90 transitions. [2021-02-21 16:13:51,623 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-02-21 16:13:51,624 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 16 [2021-02-21 16:13:51,624 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:51,631 INFO L225 Difference]: With dead ends: 65 [2021-02-21 16:13:51,632 INFO L226 Difference]: Without dead ends: 27 [2021-02-21 16:13:51,637 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-02-21 16:13:51,655 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-02-21 16:13:51,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2021-02-21 16:13:51,674 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 27 states. [2021-02-21 16:13:51,675 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 32 transitions. [2021-02-21 16:13:51,677 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 32 transitions. Word has length 16 [2021-02-21 16:13:51,677 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:51,677 INFO L480 AbstractCegarLoop]: Abstraction has 27 states and 32 transitions. [2021-02-21 16:13:51,677 INFO L481 AbstractCegarLoop]: Interpolant automaton has 3 states. [2021-02-21 16:13:51,677 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 32 transitions. [2021-02-21 16:13:51,678 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 16:13:51,679 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:51,679 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] [2021-02-21 16:13:51,679 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-02-21 16:13:51,679 INFO L428 AbstractCegarLoop]: === Iteration 2 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:51,680 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:51,681 INFO L82 PathProgramCache]: Analyzing trace with hash -2042867632, now seen corresponding path program 1 times [2021-02-21 16:13:51,681 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:51,681 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1096333952] [2021-02-21 16:13:51,681 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:51,720 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,791 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,792 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,794 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,795 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 3 [2021-02-21 16:13:51,801 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,803 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,808 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,809 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,859 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-02-21 16:13:51,866 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-02-21 16:13:51,888 WARN L141 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size [2021-02-21 16:13:51,889 WARN L147 QuantifierPusher]: treesize reduction 0, result has 100.0 percent of original size 1 [2021-02-21 16:13:51,892 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-02-21 16:13:51,893 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1096333952] [2021-02-21 16:13:51,893 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2021-02-21 16:13:51,895 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-02-21 16:13:51,895 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1956467355] [2021-02-21 16:13:51,897 INFO L460 AbstractCegarLoop]: Interpolant automaton has 5 states [2021-02-21 16:13:51,897 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-02-21 16:13:51,899 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-02-21 16:13:51,899 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-02-21 16:13:51,900 INFO L87 Difference]: Start difference. First operand 27 states and 32 transitions. Second operand 5 states. [2021-02-21 16:13:52,016 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-02-21 16:13:52,016 INFO L93 Difference]: Finished difference Result 51 states and 61 transitions. [2021-02-21 16:13:52,017 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-02-21 16:13:52,017 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 22 [2021-02-21 16:13:52,018 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-02-21 16:13:52,019 INFO L225 Difference]: With dead ends: 51 [2021-02-21 16:13:52,019 INFO L226 Difference]: Without dead ends: 37 [2021-02-21 16:13:52,020 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-02-21 16:13:52,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37 states. [2021-02-21 16:13:52,026 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37 to 29. [2021-02-21 16:13:52,026 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 29 states. [2021-02-21 16:13:52,027 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 34 transitions. [2021-02-21 16:13:52,027 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 34 transitions. Word has length 22 [2021-02-21 16:13:52,027 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-02-21 16:13:52,028 INFO L480 AbstractCegarLoop]: Abstraction has 29 states and 34 transitions. [2021-02-21 16:13:52,028 INFO L481 AbstractCegarLoop]: Interpolant automaton has 5 states. [2021-02-21 16:13:52,028 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 34 transitions. [2021-02-21 16:13:52,029 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-02-21 16:13:52,029 INFO L414 BasicCegarLoop]: Found error trace [2021-02-21 16:13:52,029 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] [2021-02-21 16:13:52,029 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-02-21 16:13:52,030 INFO L428 AbstractCegarLoop]: === Iteration 3 === [mainErr0ASSERT_VIOLATIONERROR_FUNCTION]=== [2021-02-21 16:13:52,030 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-02-21 16:13:52,030 INFO L82 PathProgramCache]: Analyzing trace with hash -1649840622, now seen corresponding path program 1 times [2021-02-21 16:13:52,030 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-02-21 16:13:52,031 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394528776] [2021-02-21 16:13:52,031 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-02-21 16:13:52,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:52,065 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:52,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-02-21 16:13:52,090 INFO L223 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-02-21 16:13:52,122 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2021-02-21 16:13:52,122 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2021-02-21 16:13:52,123 WARN L517 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-02-21 16:13:52,163 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.02 04:13:52 BoogieIcfgContainer [2021-02-21 16:13:52,163 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-02-21 16:13:52,165 INFO L168 Benchmark]: Toolchain (without parser) took 2472.28 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 124.7 MB in the beginning and 139.1 MB in the end (delta: -14.4 MB). Peak memory consumption was 17.4 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,166 INFO L168 Benchmark]: CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:52,167 INFO L168 Benchmark]: CACSL2BoogieTranslator took 577.58 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,167 INFO L168 Benchmark]: Boogie Preprocessor took 64.21 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 98.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,168 INFO L168 Benchmark]: RCFGBuilder took 732.78 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 90.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. [2021-02-21 16:13:52,169 INFO L168 Benchmark]: TraceAbstraction took 1079.79 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.0 MB in the beginning and 139.1 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 8.0 GB. [2021-02-21 16:13:52,173 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.19 ms. Allocated memory is still 151.0 MB. Free memory is still 122.5 MB. There was no memory consumed. Max. memory is 8.0 GB. * CACSL2BoogieTranslator took 577.58 ms. Allocated memory is still 151.0 MB. Free memory was 123.7 MB in the beginning and 101.4 MB in the end (delta: 22.3 MB). Peak memory consumption was 23.1 MB. Max. memory is 8.0 GB. * Boogie Preprocessor took 64.21 ms. Allocated memory is still 151.0 MB. Free memory was 101.4 MB in the beginning and 98.7 MB in the end (delta: 2.7 MB). Peak memory consumption was 2.1 MB. Max. memory is 8.0 GB. * RCFGBuilder took 732.78 ms. Allocated memory is still 151.0 MB. Free memory was 98.5 MB in the beginning and 90.5 MB in the end (delta: 8.0 MB). Peak memory consumption was 10.0 MB. Max. memory is 8.0 GB. * TraceAbstraction took 1079.79 ms. Allocated memory was 151.0 MB in the beginning and 181.4 MB in the end (delta: 30.4 MB). Free memory was 90.0 MB in the beginning and 139.1 MB in the end (delta: -49.1 MB). There was no memory consumed. Max. memory is 8.0 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 568]: a call to reach_error is reachable a call to reach_error is reachable We found a FailurePath: [L532] int i = 0; [L533] int y = 0; [L534] List a = (List) malloc(sizeof(struct node)); VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, y=0] [L536] List t; [L537] List p = a; VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] i < 10 && __VERIFIER_nondet_int() [L538] i < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, i < 10 && __VERIFIER_nondet_int()=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L538] COND FALSE !(i < 10 && __VERIFIER_nondet_int()) [L546] y < 10 && __VERIFIER_nondet_int() [L546] y < 10 && __VERIFIER_nondet_int() VAL [__VERIFIER_nondet_int()=0, a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0, y < 10 && __VERIFIER_nondet_int()=0] [L546] COND FALSE !(y < 10 && __VERIFIER_nondet_int()) [L554] p->h = 3 [L555] p->n = 0 [L556] i = 0 [L557] y = 0 [L558] p = a VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] [L559] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L559] COND FALSE !(p->h == 1) [L563] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L563] COND FALSE !(p->h == 2) [L567] EXPR p->h VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3, y=0] [L567] COND TRUE p->h != 3 || (i + y) < 20 [L568] reach_error() VAL [a={-1:0}, i=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, y=0] - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 59 locations, 1 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 0.9s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 72 SDtfs, 16 SDslu, 42 SDs, 0 SdLazy, 89 SolverSat, 8 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.1s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=40occurred in iteration=0, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 2 MinimizatonAttempts, 8 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 60 NumberOfCodeBlocks, 60 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1782 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 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...