./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memcleanup.prp --file ../sv-benchmarks/c/list-properties/splice-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (memcleanup) Using default analysis Version f6fb2bb1 Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx12G -Xms1G -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/splice-1.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.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 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................. 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 --- Skipped default analysis because property is memsafety ### Bit-precise run ### This is Ultimate 0.1.24-f6fb2bb [2019-11-19 19:51:21,938 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-19 19:51:21,940 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-19 19:51:21,952 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-19 19:51:21,953 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-19 19:51:21,954 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-19 19:51:21,955 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-19 19:51:21,958 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-19 19:51:21,959 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-19 19:51:21,960 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-19 19:51:21,961 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-19 19:51:21,963 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-19 19:51:21,963 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-19 19:51:21,964 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-19 19:51:21,965 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-19 19:51:21,966 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-19 19:51:21,967 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-19 19:51:21,968 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-19 19:51:21,970 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-19 19:51:21,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-19 19:51:21,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-19 19:51:21,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-19 19:51:21,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-19 19:51:21,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-19 19:51:21,980 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-19 19:51:21,980 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-19 19:51:21,980 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-19 19:51:21,981 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-19 19:51:21,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-19 19:51:21,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-19 19:51:21,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-19 19:51:21,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-19 19:51:21,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-19 19:51:21,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-19 19:51:21,987 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-19 19:51:21,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-19 19:51:21,988 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-19 19:51:21,988 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-19 19:51:21,988 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-19 19:51:21,989 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-19 19:51:21,990 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-19 19:51:21,990 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-MemCleanup-32bit-Automizer_Bitvector.epf [2019-11-19 19:51:22,005 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-19 19:51:22,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-19 19:51:22,007 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-19 19:51:22,007 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-19 19:51:22,007 INFO L138 SettingsManager]: * Use SBE=true [2019-11-19 19:51:22,008 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-19 19:51:22,008 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-19 19:51:22,008 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-19 19:51:22,008 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-19 19:51:22,009 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-19 19:51:22,009 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-19 19:51:22,009 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-19 19:51:22,009 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-19 19:51:22,010 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-19 19:51:22,010 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2019-11-19 19:51:22,010 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2019-11-19 19:51:22,010 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-19 19:51:22,010 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-19 19:51:22,011 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-19 19:51:22,011 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-19 19:51:22,011 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-19 19:51:22,011 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-19 19:51:22,012 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-19 19:51:22,012 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-19 19:51:22,012 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-19 19:51:22,012 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2019-11-19 19:51:22,012 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --rewrite-divk --print-success --lang smt [2019-11-19 19:51:22,013 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2019-11-19 19:51:22,013 INFO L138 SettingsManager]: * Logic for external solver=AUFBV 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 -> 336180afe1780bd2c4e24c39131e05a2fcb6ebf1 [2019-11-19 19:51:22,398 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-19 19:51:22,414 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-19 19:51:22,418 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-19 19:51:22,419 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-19 19:51:22,420 INFO L275 PluginConnector]: CDTParser initialized [2019-11-19 19:51:22,421 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 19:51:22,493 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df6cd03a/0ec67874874a4a04981bdaa5a4504913/FLAG4cbb4a249 [2019-11-19 19:51:22,988 INFO L306 CDTParser]: Found 1 translation units. [2019-11-19 19:51:22,989 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-properties/splice-1.i [2019-11-19 19:51:23,001 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df6cd03a/0ec67874874a4a04981bdaa5a4504913/FLAG4cbb4a249 [2019-11-19 19:51:23,336 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/7df6cd03a/0ec67874874a4a04981bdaa5a4504913 [2019-11-19 19:51:23,340 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-19 19:51:23,341 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-19 19:51:23,342 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-19 19:51:23,343 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-19 19:51:23,346 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-19 19:51:23,347 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:23" (1/1) ... [2019-11-19 19:51:23,350 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6540dc75 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:23, skipping insertion in model container [2019-11-19 19:51:23,350 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 19.11 07:51:23" (1/1) ... [2019-11-19 19:51:23,358 INFO L142 MainTranslator]: Starting translation in SV-COMP mode [2019-11-19 19:51:23,405 INFO L173 MainTranslator]: Built tables and reachable declarations [2019-11-19 19:51:23,871 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:51:23,890 INFO L188 MainTranslator]: Completed pre-run [2019-11-19 19:51:23,974 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-19 19:51:24,047 INFO L192 MainTranslator]: Completed translation [2019-11-19 19:51:24,048 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24 WrapperNode [2019-11-19 19:51:24,048 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-19 19:51:24,049 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-19 19:51:24,049 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-19 19:51:24,049 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-19 19:51:24,062 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,062 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,085 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,086 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,107 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,113 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,117 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (1/1) ... [2019-11-19 19:51:24,124 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-19 19:51:24,125 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-19 19:51:24,125 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-19 19:51:24,126 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-19 19:51:24,126 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (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 [2019-11-19 19:51:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-19 19:51:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-19 19:51:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-19 19:51:24,192 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-19 19:51:24,193 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-19 19:51:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-19 19:51:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-19 19:51:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure myexit [2019-11-19 19:51:24,194 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-19 19:51:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_error [2019-11-19 19:51:24,195 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2019-11-19 19:51:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-19 19:51:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-19 19:51:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-19 19:51:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-19 19:51:24,196 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-19 19:51:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-19 19:51:24,199 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-19 19:51:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-19 19:51:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-19 19:51:24,200 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-19 19:51:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-19 19:51:24,201 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-19 19:51:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-19 19:51:24,202 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-19 19:51:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-19 19:51:24,203 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-19 19:51:24,204 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-19 19:51:24,205 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-19 19:51:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-19 19:51:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-19 19:51:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-19 19:51:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-19 19:51:24,206 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-19 19:51:24,207 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-19 19:51:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-19 19:51:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-19 19:51:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-19 19:51:24,208 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-19 19:51:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-19 19:51:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-19 19:51:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-19 19:51:24,209 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-19 19:51:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-19 19:51:24,210 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-19 19:51:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-19 19:51:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-19 19:51:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-19 19:51:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-19 19:51:24,211 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-19 19:51:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-19 19:51:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-19 19:51:24,212 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-19 19:51:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-19 19:51:24,213 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-19 19:51:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-19 19:51:24,214 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-19 19:51:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-19 19:51:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-19 19:51:24,215 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-19 19:51:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-19 19:51:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-19 19:51:24,216 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-19 19:51:24,217 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-19 19:51:24,218 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-19 19:51:24,219 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-19 19:51:24,220 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-19 19:51:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-19 19:51:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-19 19:51:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-19 19:51:24,221 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure myexit [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-19 19:51:24,222 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2019-11-19 19:51:24,224 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2019-11-19 19:51:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2019-11-19 19:51:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2019-11-19 19:51:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-19 19:51:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-19 19:51:24,226 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-19 19:51:24,587 INFO L689 $ProcedureCfgBuilder]: dead code at ProgramPoint myexitFINAL: assume true; [2019-11-19 19:51:24,952 INFO L280 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-19 19:51:24,953 INFO L285 CfgBuilder]: Removed 4 assume(true) statements. [2019-11-19 19:51:24,954 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:24 BoogieIcfgContainer [2019-11-19 19:51:24,954 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-19 19:51:24,956 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-19 19:51:24,956 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-19 19:51:24,959 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-19 19:51:24,960 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 19.11 07:51:23" (1/3) ... [2019-11-19 19:51:24,961 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9a86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:24, skipping insertion in model container [2019-11-19 19:51:24,961 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 19.11 07:51:24" (2/3) ... [2019-11-19 19:51:24,962 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@59a9a86c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 19.11 07:51:24, skipping insertion in model container [2019-11-19 19:51:24,962 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:24" (3/3) ... [2019-11-19 19:51:24,964 INFO L109 eAbstractionObserver]: Analyzing ICFG splice-1.i [2019-11-19 19:51:24,975 INFO L153 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-19 19:51:24,983 INFO L165 ceAbstractionStarter]: Appying trace abstraction to program that has 29 error locations. [2019-11-19 19:51:24,995 INFO L249 AbstractCegarLoop]: Starting to check reachability of 29 error locations. [2019-11-19 19:51:25,016 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-19 19:51:25,016 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-19 19:51:25,017 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-19 19:51:25,017 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-19 19:51:25,017 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-19 19:51:25,017 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-19 19:51:25,018 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-19 19:51:25,018 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-19 19:51:25,035 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states. [2019-11-19 19:51:25,045 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 19:51:25,045 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:51:25,047 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:51:25,047 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-19 19:51:25,053 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:51:25,054 INFO L82 PathProgramCache]: Analyzing trace with hash -1307018201, now seen corresponding path program 1 times [2019-11-19 19:51:25,067 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:51:25,068 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [944204048] [2019-11-19 19:51:25,068 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 2 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:25,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:51:25,303 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 4 conjunts are in the unsatisfiable core [2019-11-19 19:51:25,310 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:51:25,394 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 19:51:25,395 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:51:25,406 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:51:25,406 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:51:25,407 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:6, output treesize:5 [2019-11-19 19:51:25,430 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:51:25,430 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:51:25,449 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:51:25,451 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [944204048] [2019-11-19 19:51:25,452 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:51:25,452 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2019-11-19 19:51:25,453 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311603227] [2019-11-19 19:51:25,460 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-19 19:51:25,461 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:51:25,476 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-19 19:51:25,477 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-19 19:51:25,480 INFO L87 Difference]: Start difference. First operand 82 states. Second operand 4 states. [2019-11-19 19:51:25,869 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:51:25,869 INFO L93 Difference]: Finished difference Result 89 states and 100 transitions. [2019-11-19 19:51:25,870 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-19 19:51:25,871 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 10 [2019-11-19 19:51:25,872 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:51:25,883 INFO L225 Difference]: With dead ends: 89 [2019-11-19 19:51:25,884 INFO L226 Difference]: Without dead ends: 80 [2019-11-19 19:51:25,886 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-19 19:51:25,909 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 80 states. [2019-11-19 19:51:25,944 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 80 to 74. [2019-11-19 19:51:25,946 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 74 states. [2019-11-19 19:51:25,951 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 86 transitions. [2019-11-19 19:51:25,952 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 86 transitions. Word has length 10 [2019-11-19 19:51:25,953 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:51:25,953 INFO L462 AbstractCegarLoop]: Abstraction has 74 states and 86 transitions. [2019-11-19 19:51:25,953 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-19 19:51:25,954 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 86 transitions. [2019-11-19 19:51:25,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2019-11-19 19:51:25,954 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:51:25,955 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:51:26,162 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:26,163 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-19 19:51:26,163 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:51:26,164 INFO L82 PathProgramCache]: Analyzing trace with hash -1307018200, now seen corresponding path program 1 times [2019-11-19 19:51:26,165 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:51:26,165 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1062452794] [2019-11-19 19:51:26,166 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 3 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:26,349 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-19 19:51:26,351 INFO L255 TraceCheckSpWp]: Trace formula consists of 39 conjuncts, 7 conjunts are in the unsatisfiable core [2019-11-19 19:51:26,352 INFO L278 TraceCheckSpWp]: Computing forward predicates... [2019-11-19 19:51:26,368 INFO L377 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2019-11-19 19:51:26,368 INFO L496 ElimStorePlain]: Start of recursive call 2: End of recursive call: and 1 xjuncts. [2019-11-19 19:51:26,375 INFO L567 ElimStorePlain]: treesize reduction 0, result has 100.0 percent of original size [2019-11-19 19:51:26,375 INFO L496 ElimStorePlain]: Start of recursive call 1: 1 dim-1 vars, End of recursive call: and 1 xjuncts. [2019-11-19 19:51:26,376 INFO L221 ElimStorePlain]: Needed 2 recursive calls to eliminate 1 variables, input treesize:10, output treesize:9 [2019-11-19 19:51:26,410 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:51:26,410 INFO L320 TraceCheckSpWp]: Computing backward predicates... [2019-11-19 19:51:26,548 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-19 19:51:26,548 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1062452794] [2019-11-19 19:51:26,549 INFO L220 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2019-11-19 19:51:26,549 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2019-11-19 19:51:26,550 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [866526144] [2019-11-19 19:51:26,555 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-19 19:51:26,556 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2019-11-19 19:51:26,556 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-19 19:51:26,557 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2019-11-19 19:51:26,558 INFO L87 Difference]: Start difference. First operand 74 states and 86 transitions. Second operand 6 states. [2019-11-19 19:51:27,121 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-19 19:51:27,121 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2019-11-19 19:51:27,123 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-19 19:51:27,123 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 10 [2019-11-19 19:51:27,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-19 19:51:27,125 INFO L225 Difference]: With dead ends: 90 [2019-11-19 19:51:27,125 INFO L226 Difference]: Without dead ends: 90 [2019-11-19 19:51:27,126 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=33, Unknown=0, NotChecked=0, Total=56 [2019-11-19 19:51:27,126 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2019-11-19 19:51:27,134 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 81. [2019-11-19 19:51:27,135 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 81 states. [2019-11-19 19:51:27,140 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 81 states to 81 states and 90 transitions. [2019-11-19 19:51:27,140 INFO L78 Accepts]: Start accepts. Automaton has 81 states and 90 transitions. Word has length 10 [2019-11-19 19:51:27,140 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-19 19:51:27,141 INFO L462 AbstractCegarLoop]: Abstraction has 81 states and 90 transitions. [2019-11-19 19:51:27,142 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-19 19:51:27,142 INFO L276 IsEmpty]: Start isEmpty. Operand 81 states and 90 transitions. [2019-11-19 19:51:27,143 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-19 19:51:27,143 INFO L402 BasicCegarLoop]: Found error trace [2019-11-19 19:51:27,143 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-19 19:51:27,345 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:27,346 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr8REQUIRES_VIOLATION, mainErr9REQUIRES_VIOLATION, mainErr5REQUIRES_VIOLATION, mainErr27REQUIRES_VIOLATION, mainErr26REQUIRES_VIOLATION, mainErr6REQUIRES_VIOLATION, mainErr7REQUIRES_VIOLATION, mainErr24REQUIRES_VIOLATION, mainErr2REQUIRES_VIOLATION, mainErr3REQUIRES_VIOLATION, mainErr4REQUIRES_VIOLATION, mainErr25REQUIRES_VIOLATION, mainErr0REQUIRES_VIOLATION, mainErr21REQUIRES_VIOLATION, mainErr1REQUIRES_VIOLATION, mainErr23REQUIRES_VIOLATION, mainErr22REQUIRES_VIOLATION, mainErr19REQUIRES_VIOLATION, mainErr18REQUIRES_VIOLATION, mainErr20REQUIRES_VIOLATION, mainErr16REQUIRES_VIOLATION, mainErr17REQUIRES_VIOLATION, mainErr28ENSURES_VIOLATIONMEMORY_LEAK, mainErr13REQUIRES_VIOLATION, mainErr15REQUIRES_VIOLATION, mainErr14REQUIRES_VIOLATION, mainErr10REQUIRES_VIOLATION, mainErr11REQUIRES_VIOLATION, mainErr12REQUIRES_VIOLATION]=== [2019-11-19 19:51:27,347 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-19 19:51:27,347 INFO L82 PathProgramCache]: Analyzing trace with hash 794315540, now seen corresponding path program 1 times [2019-11-19 19:51:27,349 INFO L163 FreeRefinementEngine]: Executing refinement strategy WOLF [2019-11-19 19:51:27,349 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleCvc4 [1751713958] [2019-11-19 19:51:27,350 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 Starting monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 4 with cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:27,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:51:27,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-19 19:51:27,651 INFO L174 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2019-11-19 19:51:27,651 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-19 19:51:27,852 WARN L499 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 cvc4 --incremental --print-success --lang smt --rewrite-divk [2019-11-19 19:51:27,863 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-19 19:51:27,880 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 19.11 07:51:27 BoogieIcfgContainer [2019-11-19 19:51:27,880 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-19 19:51:27,881 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-19 19:51:27,881 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-19 19:51:27,881 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-19 19:51:27,882 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 19.11 07:51:24" (3/4) ... [2019-11-19 19:51:27,885 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-19 19:51:27,893 WARN L417 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2019-11-19 19:51:27,989 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-19 19:51:27,997 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-19 19:51:28,002 INFO L168 Benchmark]: Toolchain (without parser) took 4660.69 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 960.4 MB in the beginning and 883.5 MB in the end (delta: 76.9 MB). Peak memory consumption was 213.2 MB. Max. memory is 11.5 GB. [2019-11-19 19:51:28,003 INFO L168 Benchmark]: CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:51:28,003 INFO L168 Benchmark]: CACSL2BoogieTranslator took 706.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. [2019-11-19 19:51:28,004 INFO L168 Benchmark]: Boogie Preprocessor took 75.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:51:28,005 INFO L168 Benchmark]: RCFGBuilder took 829.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. [2019-11-19 19:51:28,006 INFO L168 Benchmark]: TraceAbstraction took 2924.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.5 MB in the end (delta: 169.5 MB). Peak memory consumption was 169.5 MB. Max. memory is 11.5 GB. [2019-11-19 19:51:28,006 INFO L168 Benchmark]: Witness Printer took 116.59 ms. Allocated memory is still 1.2 GB. Free memory is still 883.5 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-19 19:51:28,011 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.28 ms. Allocated memory is still 1.0 GB. Free memory is still 987.2 MB. There was no memory consumed. Max. memory is 11.5 GB. * CACSL2BoogieTranslator took 706.00 ms. Allocated memory was 1.0 GB in the beginning and 1.2 GB in the end (delta: 136.3 MB). Free memory was 955.0 MB in the beginning and 1.1 GB in the end (delta: -156.3 MB). Peak memory consumption was 15.2 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 75.87 ms. Allocated memory is still 1.2 GB. Free memory is still 1.1 GB. There was no memory consumed. Max. memory is 11.5 GB. * RCFGBuilder took 829.42 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 58.3 MB). Peak memory consumption was 58.3 MB. Max. memory is 11.5 GB. * TraceAbstraction took 2924.69 ms. Allocated memory is still 1.2 GB. Free memory was 1.1 GB in the beginning and 883.5 MB in the end (delta: 169.5 MB). Peak memory consumption was 169.5 MB. Max. memory is 11.5 GB. * Witness Printer took 116.59 ms. Allocated memory is still 1.2 GB. Free memory is still 883.5 MB. There was no memory consumed. Max. memory is 11.5 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: 520]: not all allocated memory was freed not all allocated memory was freed We found a FailurePath: [L521] int flag = 1; [L522] List a = (List) malloc(sizeof(struct node)); VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}] [L523] COND FALSE !(a == 0) VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}] [L524] List t; [L525] List l1; [L526] List l2; [L527] List b; [L528] List u; [L529] List p = a; VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L530] COND FALSE !(__VERIFIER_nondet_int()) [L543] p->h = 3 VAL [a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L544] EXPR a->h VAL [a={1073741824:0}, a->h=3, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] [L544] COND TRUE a->h == 3 [L544] return 0; VAL [\result=0, a={1073741824:0}, flag=1, malloc(sizeof(struct node))={1073741824:0}, p={1073741824:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 9 procedures, 98 locations, 29 error locations. Result: UNSAFE, OverallTime: 2.8s, OverallIterations: 3, TraceHistogramMax: 1, AutomataDifference: 0.9s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 86 SDtfs, 325 SDslu, 73 SDs, 0 SdLazy, 191 SolverSat, 44 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.6s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 41 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=82occurred 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, 15 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 33 NumberOfCodeBlocks, 33 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 1476 SizeOfPredicates, 8 NumberOfNonLiveVariables, 78 ConjunctsInSsa, 11 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...