./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/list_flag-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/list-properties/list_flag-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-memcleanup) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 8d8f817036215afe0570c141fddfde907924f85b ...................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-memcleanup) --- Real Ultimate output --- This is Ultimate 0.1.25-9a8b2e8 [2020-10-20 06:19:11,053 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 06:19:11,057 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 06:19:11,097 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 06:19:11,098 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 06:19:11,108 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 06:19:11,111 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 06:19:11,115 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 06:19:11,118 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 06:19:11,121 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 06:19:11,123 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 06:19:11,125 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 06:19:11,125 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 06:19:11,129 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 06:19:11,130 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 06:19:11,132 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 06:19:11,134 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 06:19:11,135 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 06:19:11,138 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 06:19:11,144 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 06:19:11,153 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 06:19:11,154 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 06:19:11,155 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 06:19:11,156 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 06:19:11,158 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 06:19:11,159 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 06:19:11,159 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 06:19:11,160 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 06:19:11,160 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 06:19:11,161 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 06:19:11,161 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 06:19:11,162 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 06:19:11,163 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 06:19:11,164 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 06:19:11,165 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 06:19:11,165 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 06:19:11,166 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 06:19:11,166 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 06:19:11,166 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 06:19:11,167 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 06:19:11,168 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 06:19:11,169 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Default.epf [2020-10-20 06:19:11,191 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 06:19:11,191 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 06:19:11,193 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 06:19:11,193 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 06:19:11,193 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 06:19:11,194 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 06:19:11,194 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 06:19:11,194 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 06:19:11,194 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 06:19:11,195 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 06:19:11,195 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 06:19:11,195 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 06:19:11,195 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 06:19:11,196 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 06:19:11,196 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 06:19:11,196 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 06:19:11,196 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 06:19:11,197 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 06:19:11,197 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 06:19:11,197 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 06:19:11,197 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 06:19:11,198 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 06:19:11,198 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 06:19:11,198 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 06:19:11,198 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 06:19:11,199 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 06:19:11,199 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 06:19:11,199 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-memcleanup) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 8d8f817036215afe0570c141fddfde907924f85b [2020-10-20 06:19:11,404 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 06:19:11,417 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 06:19:11,421 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 06:19:11,423 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 06:19:11,424 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 06:19:11,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/list_flag-1.i [2020-10-20 06:19:11,499 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd07e72c/84b122fd085f4106b7bd029b0e16383a/FLAG8abfad4fd [2020-10-20 06:19:12,068 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 06:19:12,069 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/list_flag-1.i [2020-10-20 06:19:12,084 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd07e72c/84b122fd085f4106b7bd029b0e16383a/FLAG8abfad4fd [2020-10-20 06:19:12,342 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ebd07e72c/84b122fd085f4106b7bd029b0e16383a [2020-10-20 06:19:12,346 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 06:19:12,353 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 06:19:12,354 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:12,355 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 06:19:12,358 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 06:19:12,359 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,362 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1a82ad86 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12, skipping insertion in model container [2020-10-20 06:19:12,363 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,370 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 06:19:12,406 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 06:19:12,780 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:12,792 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 06:19:12,840 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 06:19:12,934 INFO L208 MainTranslator]: Completed translation [2020-10-20 06:19:12,935 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12 WrapperNode [2020-10-20 06:19:12,941 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 06:19:12,942 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 06:19:12,942 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 06:19:12,942 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 06:19:12,955 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,955 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,975 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,975 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,993 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:12,999 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:13,003 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (1/1) ... [2020-10-20 06:19:13,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 06:19:13,010 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 06:19:13,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 06:19:13,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 06:19:13,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (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 [2020-10-20 06:19:13,083 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 06:19:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 06:19:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure reach_error [2020-10-20 06:19:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 06:19:13,084 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 06:19:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 06:19:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 06:19:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 06:19:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2020-10-20 06:19:13,085 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 06:19:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 06:19:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_fail [2020-10-20 06:19:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert_perror_fail [2020-10-20 06:19:13,086 INFO L130 BoogieDeclarations]: Found specification of procedure __assert [2020-10-20 06:19:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure reach_error [2020-10-20 06:19:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2020-10-20 06:19:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2020-10-20 06:19:13,087 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 06:19:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 06:19:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 06:19:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 06:19:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 06:19:13,088 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 06:19:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 06:19:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 06:19:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 06:19:13,089 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 06:19:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 06:19:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 06:19:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 06:19:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 06:19:13,090 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 06:19:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 06:19:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 06:19:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 06:19:13,091 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 06:19:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 06:19:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 06:19:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 06:19:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 06:19:13,092 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 06:19:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 06:19:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 06:19:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 06:19:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 06:19:13,093 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 06:19:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 06:19:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 06:19:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 06:19:13,094 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 06:19:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 06:19:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 06:19:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 06:19:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 06:19:13,095 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 06:19:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 06:19:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 06:19:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 06:19:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 06:19:13,096 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 06:19:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 06:19:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 06:19:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 06:19:13,097 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 06:19:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 06:19:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 06:19:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 06:19:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 06:19:13,098 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 06:19:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 06:19:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 06:19:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 06:19:13,099 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 06:19:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 06:19:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 06:19:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 06:19:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 06:19:13,100 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 06:19:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 06:19:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 06:19:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 06:19:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 06:19:13,101 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 06:19:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 06:19:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 06:19:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 06:19:13,102 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 06:19:13,103 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 06:19:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 06:19:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 06:19:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 06:19:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 06:19:13,104 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 06:19:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 06:19:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 06:19:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 06:19:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 06:19:13,105 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 06:19:13,106 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 06:19:13,107 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 06:19:13,108 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~int [2020-10-20 06:19:13,109 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2020-10-20 06:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2020-10-20 06:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure read~int [2020-10-20 06:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 06:19:13,110 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2020-10-20 06:19:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 06:19:13,111 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 06:19:13,491 INFO L751 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2020-10-20 06:19:13,715 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 06:19:13,716 INFO L298 CfgBuilder]: Removed 3 assume(true) statements. [2020-10-20 06:19:13,718 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:13 BoogieIcfgContainer [2020-10-20 06:19:13,718 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 06:19:13,719 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 06:19:13,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 06:19:13,723 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 06:19:13,723 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 06:19:12" (1/3) ... [2020-10-20 06:19:13,724 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c624e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:13, skipping insertion in model container [2020-10-20 06:19:13,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 06:19:12" (2/3) ... [2020-10-20 06:19:13,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4c624e57 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 06:19:13, skipping insertion in model container [2020-10-20 06:19:13,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:13" (3/3) ... [2020-10-20 06:19:13,727 INFO L111 eAbstractionObserver]: Analyzing ICFG list_flag-1.i [2020-10-20 06:19:13,739 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 06:19:13,747 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 22 error locations. [2020-10-20 06:19:13,762 INFO L253 AbstractCegarLoop]: Starting to check reachability of 22 error locations. [2020-10-20 06:19:13,784 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 06:19:13,785 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 06:19:13,785 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 06:19:13,785 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 06:19:13,785 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 06:19:13,785 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 06:19:13,786 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 06:19:13,786 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 06:19:13,804 INFO L276 IsEmpty]: Start isEmpty. Operand 67 states. [2020-10-20 06:19:13,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2020-10-20 06:19:13,815 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:13,816 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:13,817 INFO L429 AbstractCegarLoop]: === Iteration 1 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:19:13,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:13,823 INFO L82 PathProgramCache]: Analyzing trace with hash 884508361, now seen corresponding path program 1 times [2020-10-20 06:19:13,834 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:13,835 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2040094885] [2020-10-20 06:19:13,835 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:13,967 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,075 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:14,080 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,093 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:14,094 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2040094885] [2020-10-20 06:19:14,095 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:14,096 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 06:19:14,096 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1886534761] [2020-10-20 06:19:14,102 INFO L461 AbstractCegarLoop]: Interpolant automaton has 3 states [2020-10-20 06:19:14,102 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:14,134 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2020-10-20 06:19:14,135 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2020-10-20 06:19:14,137 INFO L87 Difference]: Start difference. First operand 67 states. Second operand 3 states. [2020-10-20 06:19:14,300 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:14,300 INFO L93 Difference]: Finished difference Result 64 states and 70 transitions. [2020-10-20 06:19:14,300 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2020-10-20 06:19:14,302 INFO L78 Accepts]: Start accepts. Automaton has 3 states. Word has length 10 [2020-10-20 06:19:14,302 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:14,311 INFO L225 Difference]: With dead ends: 64 [2020-10-20 06:19:14,311 INFO L226 Difference]: Without dead ends: 57 [2020-10-20 06:19:14,313 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 [2020-10-20 06:19:14,332 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2020-10-20 06:19:14,351 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2020-10-20 06:19:14,352 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 57 states. [2020-10-20 06:19:14,354 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2020-10-20 06:19:14,356 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 10 [2020-10-20 06:19:14,356 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:14,356 INFO L481 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2020-10-20 06:19:14,356 INFO L482 AbstractCegarLoop]: Interpolant automaton has 3 states. [2020-10-20 06:19:14,356 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2020-10-20 06:19:14,357 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:19:14,357 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:14,357 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:14,358 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 06:19:14,358 INFO L429 AbstractCegarLoop]: === Iteration 2 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:19:14,358 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:14,358 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921759, now seen corresponding path program 1 times [2020-10-20 06:19:14,359 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:14,359 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1891724427] [2020-10-20 06:19:14,359 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:14,382 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,460 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:14,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,471 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:14,471 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1891724427] [2020-10-20 06:19:14,472 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:14,472 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:19:14,472 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1903606453] [2020-10-20 06:19:14,474 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:14,474 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:14,474 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:14,475 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:14,475 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand 5 states. [2020-10-20 06:19:14,669 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:14,669 INFO L93 Difference]: Finished difference Result 65 states and 71 transitions. [2020-10-20 06:19:14,669 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:19:14,669 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:19:14,670 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:14,673 INFO L225 Difference]: With dead ends: 65 [2020-10-20 06:19:14,673 INFO L226 Difference]: Without dead ends: 65 [2020-10-20 06:19:14,674 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:14,675 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2020-10-20 06:19:14,681 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 60. [2020-10-20 06:19:14,681 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 60 states. [2020-10-20 06:19:14,683 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 71 transitions. [2020-10-20 06:19:14,683 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 71 transitions. Word has length 11 [2020-10-20 06:19:14,683 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:14,684 INFO L481 AbstractCegarLoop]: Abstraction has 60 states and 71 transitions. [2020-10-20 06:19:14,684 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:14,684 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 71 transitions. [2020-10-20 06:19:14,684 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 06:19:14,684 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:14,685 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:14,685 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 06:19:14,685 INFO L429 AbstractCegarLoop]: === Iteration 3 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:19:14,685 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:14,686 INFO L82 PathProgramCache]: Analyzing trace with hash 1649921760, now seen corresponding path program 1 times [2020-10-20 06:19:14,686 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:14,686 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1935812362] [2020-10-20 06:19:14,686 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:14,707 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,773 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 06:19:14,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 06:19:14,783 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 06:19:14,784 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1935812362] [2020-10-20 06:19:14,784 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 06:19:14,784 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2020-10-20 06:19:14,784 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [930071238] [2020-10-20 06:19:14,785 INFO L461 AbstractCegarLoop]: Interpolant automaton has 5 states [2020-10-20 06:19:14,785 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 06:19:14,785 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2020-10-20 06:19:14,786 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2020-10-20 06:19:14,786 INFO L87 Difference]: Start difference. First operand 60 states and 71 transitions. Second operand 5 states. [2020-10-20 06:19:14,987 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 06:19:14,988 INFO L93 Difference]: Finished difference Result 77 states and 85 transitions. [2020-10-20 06:19:14,988 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 06:19:14,988 INFO L78 Accepts]: Start accepts. Automaton has 5 states. Word has length 11 [2020-10-20 06:19:14,989 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 06:19:14,991 INFO L225 Difference]: With dead ends: 77 [2020-10-20 06:19:14,991 INFO L226 Difference]: Without dead ends: 77 [2020-10-20 06:19:14,991 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2020-10-20 06:19:14,992 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 77 states. [2020-10-20 06:19:14,998 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 77 to 69. [2020-10-20 06:19:14,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 69 states. [2020-10-20 06:19:14,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 77 transitions. [2020-10-20 06:19:15,000 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 77 transitions. Word has length 11 [2020-10-20 06:19:15,000 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 06:19:15,000 INFO L481 AbstractCegarLoop]: Abstraction has 69 states and 77 transitions. [2020-10-20 06:19:15,000 INFO L482 AbstractCegarLoop]: Interpolant automaton has 5 states. [2020-10-20 06:19:15,000 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 77 transitions. [2020-10-20 06:19:15,001 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2020-10-20 06:19:15,001 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 06:19:15,001 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 06:19:15,002 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 06:19:15,002 INFO L429 AbstractCegarLoop]: === Iteration 4 === [reach_errorErr0ASSERT_VIOLATIONMEMORY_LEAK, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr20ENSURES_VIOLATIONMEMORY_LEAK, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2020-10-20 06:19:15,002 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 06:19:15,002 INFO L82 PathProgramCache]: Analyzing trace with hash -590364418, now seen corresponding path program 1 times [2020-10-20 06:19:15,003 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 06:19:15,003 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1077875867] [2020-10-20 06:19:15,003 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 06:19:15,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:19:15,032 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:19:15,074 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 06:19:15,075 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 06:19:15,111 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 06:19:15,112 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 06:19:15,112 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 06:19:15,128 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:19:15,145 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 06:19:15 BoogieIcfgContainer [2020-10-20 06:19:15,145 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 06:19:15,146 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 06:19:15,146 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 06:19:15,146 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 06:19:15,147 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 06:19:13" (3/4) ... [2020-10-20 06:19:15,149 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 06:19:15,153 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2020-10-20 06:19:15,210 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 06:19:15,211 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 06:19:15,213 INFO L168 Benchmark]: Toolchain (without parser) took 2864.73 ms. Allocated memory was 36.2 MB in the beginning and 58.2 MB in the end (delta: 22.0 MB). Free memory was 16.4 MB in the beginning and 10.5 MB in the end (delta: 5.9 MB). Peak memory consumption was 27.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,225 INFO L168 Benchmark]: CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,226 INFO L168 Benchmark]: CACSL2BoogieTranslator took 587.01 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 15.5 MB in the beginning and 26.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,226 INFO L168 Benchmark]: Boogie Preprocessor took 68.29 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 24.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,227 INFO L168 Benchmark]: RCFGBuilder took 707.69 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 24.0 MB in the beginning and 27.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,228 INFO L168 Benchmark]: TraceAbstraction took 1425.95 ms. Allocated memory was 48.8 MB in the beginning and 58.2 MB in the end (delta: 9.4 MB). Free memory was 27.6 MB in the beginning and 12.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,229 INFO L168 Benchmark]: Witness Printer took 65.43 ms. Allocated memory is still 58.2 MB. Free memory was 12.7 MB in the beginning and 10.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. [2020-10-20 06:19:15,233 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.34 ms. Allocated memory is still 33.6 MB. Free memory was 10.8 MB in the beginning and 10.7 MB in the end (delta: 45.5 kB). Peak memory consumption was 45.5 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 587.01 ms. Allocated memory was 36.2 MB in the beginning and 46.1 MB in the end (delta: 10.0 MB). Free memory was 15.5 MB in the beginning and 26.9 MB in the end (delta: -11.4 MB). Peak memory consumption was 15.2 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 68.29 ms. Allocated memory is still 46.1 MB. Free memory was 26.9 MB in the beginning and 24.0 MB in the end (delta: 2.9 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 707.69 ms. Allocated memory was 46.1 MB in the beginning and 48.8 MB in the end (delta: 2.6 MB). Free memory was 24.0 MB in the beginning and 27.9 MB in the end (delta: -3.9 MB). Peak memory consumption was 17.9 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1425.95 ms. Allocated memory was 48.8 MB in the beginning and 58.2 MB in the end (delta: 9.4 MB). Free memory was 27.6 MB in the beginning and 12.7 MB in the end (delta: 14.8 MB). Peak memory consumption was 24.3 MB. Max. memory is 14.3 GB. * Witness Printer took 65.43 ms. Allocated memory is still 58.2 MB. Free memory was 12.7 MB in the beginning and 10.5 MB in the end (delta: 2.2 MB). Peak memory consumption was 2.2 MB. Max. memory is 14.3 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 531]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L532] int flag = __VERIFIER_nondet_int(); [L533] List p, a, t; [L534] a = (List) malloc(sizeof(struct node)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L535] COND FALSE !(a == 0) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}] [L536] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L537] COND FALSE !(__VERIFIER_nondet_int()) [L548] p->h = 3 VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L549] p = a VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L550] COND FALSE !(\read(flag)) VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}] [L554] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L554] COND FALSE !(p->h == 1) [L556] EXPR p->h VAL [a={-1:0}, flag=0, malloc(sizeof(struct node))={-1:0}, p={-1:0}, p->h=3] [L556] COND FALSE !(p->h != 3) - StatisticsResult: Ultimate Automizer benchmark data CFG has 10 procedures, 83 locations, 22 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 4, TraceHistogramMax: 1, AutomataDifference: 0.6s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 122 SDtfs, 194 SDslu, 42 SDs, 0 SdLazy, 277 SolverSat, 42 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.3s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 16 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=3, 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, 3 MinimizatonAttempts, 13 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.0s SatisfiabilityAnalysisTime, 0.2s InterpolantComputationTime, 50 NumberOfCodeBlocks, 50 NumberOfCodeBlocksAsserted, 4 NumberOfCheckSat, 29 ConstructedInterpolants, 0 QuantifiedInterpolants, 1577 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 3 InterpolantComputations, 3 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...