./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety/cmp-freed-ptr.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version f470102c 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/memsafety/cmp-freed-ptr.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 3444bab46e3acd40907f623c997f9115bc97543a ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free) --- Real Ultimate output --- This is Ultimate 0.1.25-f470102 [2019-11-28 20:07:08,035 INFO L177 SettingsManager]: Resetting all preferences to default values... [2019-11-28 20:07:08,038 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2019-11-28 20:07:08,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2019-11-28 20:07:08,057 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2019-11-28 20:07:08,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2019-11-28 20:07:08,061 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2019-11-28 20:07:08,071 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2019-11-28 20:07:08,076 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2019-11-28 20:07:08,079 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2019-11-28 20:07:08,080 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2019-11-28 20:07:08,082 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2019-11-28 20:07:08,083 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2019-11-28 20:07:08,085 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2019-11-28 20:07:08,087 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2019-11-28 20:07:08,088 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2019-11-28 20:07:08,090 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2019-11-28 20:07:08,091 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2019-11-28 20:07:08,093 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2019-11-28 20:07:08,097 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2019-11-28 20:07:08,101 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2019-11-28 20:07:08,106 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2019-11-28 20:07:08,107 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2019-11-28 20:07:08,108 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2019-11-28 20:07:08,113 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2019-11-28 20:07:08,113 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2019-11-28 20:07:08,113 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2019-11-28 20:07:08,115 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2019-11-28 20:07:08,115 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2019-11-28 20:07:08,116 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2019-11-28 20:07:08,117 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2019-11-28 20:07:08,117 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2019-11-28 20:07:08,118 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2019-11-28 20:07:08,119 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2019-11-28 20:07:08,121 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2019-11-28 20:07:08,121 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2019-11-28 20:07:08,122 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2019-11-28 20:07:08,122 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2019-11-28 20:07:08,122 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2019-11-28 20:07:08,123 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2019-11-28 20:07:08,124 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2019-11-28 20:07:08,125 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2019-11-28 20:07:08,159 INFO L113 SettingsManager]: Loading preferences was successful [2019-11-28 20:07:08,161 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2019-11-28 20:07:08,162 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2019-11-28 20:07:08,162 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2019-11-28 20:07:08,164 INFO L138 SettingsManager]: * Use SBE=true [2019-11-28 20:07:08,164 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2019-11-28 20:07:08,164 INFO L138 SettingsManager]: * sizeof long=4 [2019-11-28 20:07:08,165 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2019-11-28 20:07:08,165 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2019-11-28 20:07:08,166 INFO L138 SettingsManager]: * sizeof POINTER=4 [2019-11-28 20:07:08,166 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2019-11-28 20:07:08,167 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2019-11-28 20:07:08,167 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2019-11-28 20:07:08,168 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2019-11-28 20:07:08,168 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2019-11-28 20:07:08,169 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2019-11-28 20:07:08,169 INFO L138 SettingsManager]: * sizeof long double=12 [2019-11-28 20:07:08,169 INFO L138 SettingsManager]: * Use constant arrays=true [2019-11-28 20:07:08,170 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2019-11-28 20:07:08,170 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2019-11-28 20:07:08,170 INFO L138 SettingsManager]: * To the following directory=./dump/ [2019-11-28 20:07:08,170 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2019-11-28 20:07:08,171 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2019-11-28 20:07:08,171 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2019-11-28 20:07:08,172 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2019-11-28 20:07:08,172 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2019-11-28 20:07:08,172 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2019-11-28 20:07:08,172 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2019-11-28 20:07:08,173 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-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) 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 -> 3444bab46e3acd40907f623c997f9115bc97543a [2019-11-28 20:07:08,492 INFO L81 nceAwareModelManager]: Repository-Root is: /tmp [2019-11-28 20:07:08,513 INFO L258 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2019-11-28 20:07:08,517 INFO L214 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2019-11-28 20:07:08,519 INFO L271 PluginConnector]: Initializing CDTParser... [2019-11-28 20:07:08,519 INFO L275 PluginConnector]: CDTParser initialized [2019-11-28 20:07:08,521 INFO L428 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-28 20:07:08,594 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea78089f0/865e85dbee074690a8241f6530101845/FLAG8e9a40b4f [2019-11-28 20:07:09,085 INFO L306 CDTParser]: Found 1 translation units. [2019-11-28 20:07:09,085 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2019-11-28 20:07:09,096 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea78089f0/865e85dbee074690a8241f6530101845/FLAG8e9a40b4f [2019-11-28 20:07:09,399 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/ea78089f0/865e85dbee074690a8241f6530101845 [2019-11-28 20:07:09,403 INFO L296 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2019-11-28 20:07:09,405 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2019-11-28 20:07:09,406 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2019-11-28 20:07:09,407 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2019-11-28 20:07:09,413 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2019-11-28 20:07:09,415 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:07:09" (1/1) ... [2019-11-28 20:07:09,418 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@24c7a7ad and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:09, skipping insertion in model container [2019-11-28 20:07:09,419 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 28.11 08:07:09" (1/1) ... [2019-11-28 20:07:09,428 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2019-11-28 20:07:09,488 INFO L178 MainTranslator]: Built tables and reachable declarations [2019-11-28 20:07:09,962 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:07:09,968 INFO L203 MainTranslator]: Completed pre-run [2019-11-28 20:07:10,021 INFO L206 PostProcessor]: Analyzing one entry point: main [2019-11-28 20:07:10,081 INFO L208 MainTranslator]: Completed translation [2019-11-28 20:07:10,081 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10 WrapperNode [2019-11-28 20:07:10,082 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2019-11-28 20:07:10,083 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2019-11-28 20:07:10,083 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2019-11-28 20:07:10,084 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2019-11-28 20:07:10,099 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,099 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,123 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,124 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,138 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,141 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,143 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (1/1) ... [2019-11-28 20:07:10,149 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2019-11-28 20:07:10,150 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2019-11-28 20:07:10,150 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2019-11-28 20:07:10,150 INFO L275 PluginConnector]: RCFGBuilder initialized [2019-11-28 20:07:10,151 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (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 [2019-11-28 20:07:10,214 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2019-11-28 20:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2019-11-28 20:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2019-11-28 20:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2019-11-28 20:07:10,215 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2019-11-28 20:07:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2019-11-28 20:07:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2019-11-28 20:07:10,216 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2019-11-28 20:07:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2019-11-28 20:07:10,216 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2019-11-28 20:07:10,217 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2019-11-28 20:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2019-11-28 20:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2019-11-28 20:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2019-11-28 20:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2019-11-28 20:07:10,218 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2019-11-28 20:07:10,219 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2019-11-28 20:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2019-11-28 20:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2019-11-28 20:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2019-11-28 20:07:10,220 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2019-11-28 20:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2019-11-28 20:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2019-11-28 20:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2019-11-28 20:07:10,221 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2019-11-28 20:07:10,222 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2019-11-28 20:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2019-11-28 20:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2019-11-28 20:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2019-11-28 20:07:10,223 INFO L130 BoogieDeclarations]: Found specification of procedure select [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure random [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2019-11-28 20:07:10,224 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2019-11-28 20:07:10,225 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2019-11-28 20:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2019-11-28 20:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2019-11-28 20:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2019-11-28 20:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2019-11-28 20:07:10,226 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2019-11-28 20:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2019-11-28 20:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2019-11-28 20:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2019-11-28 20:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2019-11-28 20:07:10,227 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2019-11-28 20:07:10,228 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2019-11-28 20:07:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2019-11-28 20:07:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2019-11-28 20:07:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2019-11-28 20:07:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2019-11-28 20:07:10,229 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure free [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2019-11-28 20:07:10,230 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2019-11-28 20:07:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2019-11-28 20:07:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2019-11-28 20:07:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2019-11-28 20:07:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2019-11-28 20:07:10,231 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2019-11-28 20:07:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2019-11-28 20:07:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2019-11-28 20:07:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2019-11-28 20:07:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2019-11-28 20:07:10,232 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2019-11-28 20:07:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2019-11-28 20:07:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2019-11-28 20:07:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2019-11-28 20:07:10,233 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure system [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2019-11-28 20:07:10,234 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure div [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2019-11-28 20:07:10,235 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2019-11-28 20:07:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2019-11-28 20:07:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2019-11-28 20:07:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2019-11-28 20:07:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2019-11-28 20:07:10,236 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2019-11-28 20:07:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2019-11-28 20:07:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2019-11-28 20:07:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2019-11-28 20:07:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2019-11-28 20:07:10,237 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2019-11-28 20:07:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2019-11-28 20:07:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2019-11-28 20:07:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2019-11-28 20:07:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure main [2019-11-28 20:07:10,238 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2019-11-28 20:07:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2019-11-28 20:07:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2019-11-28 20:07:10,239 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2019-11-28 20:07:10,716 INFO L282 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2019-11-28 20:07:10,716 INFO L287 CfgBuilder]: Removed 0 assume(true) statements. [2019-11-28 20:07:10,717 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:07:10 BoogieIcfgContainer [2019-11-28 20:07:10,717 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2019-11-28 20:07:10,718 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2019-11-28 20:07:10,719 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2019-11-28 20:07:10,724 INFO L275 PluginConnector]: TraceAbstraction initialized [2019-11-28 20:07:10,724 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 28.11 08:07:09" (1/3) ... [2019-11-28 20:07:10,725 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30992d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:07:10, skipping insertion in model container [2019-11-28 20:07:10,725 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 28.11 08:07:10" (2/3) ... [2019-11-28 20:07:10,726 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@30992d8a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 28.11 08:07:10, skipping insertion in model container [2019-11-28 20:07:10,726 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:07:10" (3/3) ... [2019-11-28 20:07:10,729 INFO L109 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2019-11-28 20:07:10,740 INFO L156 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2019-11-28 20:07:10,748 INFO L168 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2019-11-28 20:07:10,761 INFO L249 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2019-11-28 20:07:10,783 INFO L373 AbstractCegarLoop]: Interprodecural is true [2019-11-28 20:07:10,785 INFO L374 AbstractCegarLoop]: Hoare is false [2019-11-28 20:07:10,785 INFO L375 AbstractCegarLoop]: Compute interpolants for FPandBP [2019-11-28 20:07:10,785 INFO L376 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2019-11-28 20:07:10,786 INFO L377 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2019-11-28 20:07:10,786 INFO L378 AbstractCegarLoop]: Difference is false [2019-11-28 20:07:10,786 INFO L379 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2019-11-28 20:07:10,786 INFO L383 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2019-11-28 20:07:10,816 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2019-11-28 20:07:10,825 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2019-11-28 20:07:10,825 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:10,826 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:10,827 INFO L410 AbstractCegarLoop]: === Iteration 1 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:10,833 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:10,834 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2019-11-28 20:07:10,841 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:10,842 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [392650253] [2019-11-28 20:07:10,842 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:10,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,038 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,046 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:11,047 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [392650253] [2019-11-28 20:07:11,048 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:11,049 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:07:11,051 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1380747423] [2019-11-28 20:07:11,056 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:07:11,056 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:11,069 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:07:11,070 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,071 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2019-11-28 20:07:11,187 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:11,187 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2019-11-28 20:07:11,188 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:07:11,190 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2019-11-28 20:07:11,190 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:11,202 INFO L225 Difference]: With dead ends: 29 [2019-11-28 20:07:11,203 INFO L226 Difference]: Without dead ends: 26 [2019-11-28 20:07:11,205 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 5 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2019-11-28 20:07:11,222 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2019-11-28 20:07:11,235 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2019-11-28 20:07:11,237 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2019-11-28 20:07:11,238 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2019-11-28 20:07:11,239 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2019-11-28 20:07:11,239 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:11,239 INFO L462 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2019-11-28 20:07:11,240 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:07:11,240 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2019-11-28 20:07:11,240 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2019-11-28 20:07:11,240 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:11,241 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:11,241 INFO L410 AbstractCegarLoop]: === Iteration 2 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:11,242 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:11,242 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2019-11-28 20:07:11,242 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:11,243 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1961866178] [2019-11-28 20:07:11,243 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:11,260 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,313 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,321 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:11,321 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1961866178] [2019-11-28 20:07:11,322 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:11,322 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:07:11,322 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816480904] [2019-11-28 20:07:11,324 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:07:11,324 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:11,324 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:07:11,325 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,325 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2019-11-28 20:07:11,375 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:11,376 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2019-11-28 20:07:11,376 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:07:11,377 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2019-11-28 20:07:11,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:11,378 INFO L225 Difference]: With dead ends: 25 [2019-11-28 20:07:11,378 INFO L226 Difference]: Without dead ends: 25 [2019-11-28 20:07:11,379 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,380 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2019-11-28 20:07:11,382 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2019-11-28 20:07:11,383 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2019-11-28 20:07:11,384 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2019-11-28 20:07:11,384 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2019-11-28 20:07:11,384 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:11,384 INFO L462 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2019-11-28 20:07:11,385 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:07:11,385 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2019-11-28 20:07:11,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2019-11-28 20:07:11,386 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:11,386 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:11,386 INFO L410 AbstractCegarLoop]: === Iteration 3 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:11,387 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:11,387 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2019-11-28 20:07:11,387 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:11,388 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [2032794258] [2019-11-28 20:07:11,388 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:11,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,460 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,473 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:11,475 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [2032794258] [2019-11-28 20:07:11,475 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:11,476 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:07:11,476 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [539184290] [2019-11-28 20:07:11,476 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:07:11,478 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:11,478 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:07:11,479 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,479 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2019-11-28 20:07:11,534 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:11,534 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2019-11-28 20:07:11,535 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:07:11,535 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2019-11-28 20:07:11,535 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:11,536 INFO L225 Difference]: With dead ends: 24 [2019-11-28 20:07:11,536 INFO L226 Difference]: Without dead ends: 24 [2019-11-28 20:07:11,537 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,538 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2019-11-28 20:07:11,540 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2019-11-28 20:07:11,541 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2019-11-28 20:07:11,542 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2019-11-28 20:07:11,542 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2019-11-28 20:07:11,543 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:11,543 INFO L462 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2019-11-28 20:07:11,543 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:07:11,543 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2019-11-28 20:07:11,544 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2019-11-28 20:07:11,544 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:11,544 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:11,545 INFO L410 AbstractCegarLoop]: === Iteration 4 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:11,545 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:11,546 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2019-11-28 20:07:11,546 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:11,547 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [297441486] [2019-11-28 20:07:11,547 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:11,578 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,673 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:11,673 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [297441486] [2019-11-28 20:07:11,673 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:11,674 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:07:11,679 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1518307089] [2019-11-28 20:07:11,679 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:07:11,680 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:11,681 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:07:11,682 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,683 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2019-11-28 20:07:11,740 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:11,740 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-28 20:07:11,741 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:07:11,741 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2019-11-28 20:07:11,742 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:11,742 INFO L225 Difference]: With dead ends: 22 [2019-11-28 20:07:11,742 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 20:07:11,744 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:11,745 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 20:07:11,746 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 20:07:11,747 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:07:11,747 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 20:07:11,748 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2019-11-28 20:07:11,748 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:11,748 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 20:07:11,748 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:07:11,749 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 20:07:11,749 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2019-11-28 20:07:11,749 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:11,749 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:11,750 INFO L410 AbstractCegarLoop]: === Iteration 5 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:11,750 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:11,750 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2019-11-28 20:07:11,751 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:11,751 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1242862469] [2019-11-28 20:07:11,751 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:11,764 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,857 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:11,865 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:11,870 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1242862469] [2019-11-28 20:07:11,870 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:11,871 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2019-11-28 20:07:11,871 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1306543363] [2019-11-28 20:07:11,873 INFO L442 AbstractCegarLoop]: Interpolant automaton has 8 states [2019-11-28 20:07:11,873 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:11,874 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2019-11-28 20:07:11,874 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2019-11-28 20:07:11,875 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 8 states. [2019-11-28 20:07:11,962 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:11,962 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2019-11-28 20:07:11,963 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2019-11-28 20:07:11,963 INFO L78 Accepts]: Start accepts. Automaton has 8 states. Word has length 12 [2019-11-28 20:07:11,963 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:11,964 INFO L225 Difference]: With dead ends: 20 [2019-11-28 20:07:11,964 INFO L226 Difference]: Without dead ends: 20 [2019-11-28 20:07:11,965 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2019-11-28 20:07:11,965 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2019-11-28 20:07:11,968 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2019-11-28 20:07:11,970 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2019-11-28 20:07:11,971 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2019-11-28 20:07:11,972 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2019-11-28 20:07:11,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:11,973 INFO L462 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2019-11-28 20:07:11,973 INFO L463 AbstractCegarLoop]: Interpolant automaton has 8 states. [2019-11-28 20:07:11,973 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2019-11-28 20:07:11,974 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2019-11-28 20:07:11,975 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:11,975 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:11,976 INFO L410 AbstractCegarLoop]: === Iteration 6 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:11,976 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:11,977 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2019-11-28 20:07:11,977 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:11,977 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [686265471] [2019-11-28 20:07:11,978 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:12,011 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:12,058 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:12,069 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:12,070 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [686265471] [2019-11-28 20:07:12,070 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:12,071 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2019-11-28 20:07:12,071 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1939619346] [2019-11-28 20:07:12,072 INFO L442 AbstractCegarLoop]: Interpolant automaton has 4 states [2019-11-28 20:07:12,072 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:12,072 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2019-11-28 20:07:12,072 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:12,073 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2019-11-28 20:07:12,116 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:12,116 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2019-11-28 20:07:12,117 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2019-11-28 20:07:12,117 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2019-11-28 20:07:12,117 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:12,118 INFO L225 Difference]: With dead ends: 22 [2019-11-28 20:07:12,118 INFO L226 Difference]: Without dead ends: 22 [2019-11-28 20:07:12,119 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 4 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2019-11-28 20:07:12,120 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2019-11-28 20:07:12,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2019-11-28 20:07:12,123 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2019-11-28 20:07:12,124 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2019-11-28 20:07:12,124 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2019-11-28 20:07:12,124 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:12,125 INFO L462 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2019-11-28 20:07:12,125 INFO L463 AbstractCegarLoop]: Interpolant automaton has 4 states. [2019-11-28 20:07:12,125 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2019-11-28 20:07:12,126 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2019-11-28 20:07:12,126 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:12,126 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:12,127 INFO L410 AbstractCegarLoop]: === Iteration 7 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:12,127 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:12,128 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2019-11-28 20:07:12,128 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:12,128 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [328962035] [2019-11-28 20:07:12,129 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:12,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:12,222 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2019-11-28 20:07:12,232 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2019-11-28 20:07:12,232 INFO L348 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [328962035] [2019-11-28 20:07:12,233 INFO L220 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2019-11-28 20:07:12,233 INFO L233 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2019-11-28 20:07:12,235 INFO L156 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [3238588] [2019-11-28 20:07:12,236 INFO L442 AbstractCegarLoop]: Interpolant automaton has 6 states [2019-11-28 20:07:12,236 INFO L143 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2019-11-28 20:07:12,237 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2019-11-28 20:07:12,237 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2019-11-28 20:07:12,238 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2019-11-28 20:07:12,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2019-11-28 20:07:12,298 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2019-11-28 20:07:12,298 INFO L142 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2019-11-28 20:07:12,299 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2019-11-28 20:07:12,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2019-11-28 20:07:12,299 INFO L225 Difference]: With dead ends: 21 [2019-11-28 20:07:12,300 INFO L226 Difference]: Without dead ends: 17 [2019-11-28 20:07:12,300 INFO L630 BasicCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2019-11-28 20:07:12,301 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2019-11-28 20:07:12,302 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2019-11-28 20:07:12,302 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2019-11-28 20:07:12,303 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2019-11-28 20:07:12,304 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2019-11-28 20:07:12,304 INFO L84 Accepts]: Finished accepts. word is rejected. [2019-11-28 20:07:12,304 INFO L462 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2019-11-28 20:07:12,304 INFO L463 AbstractCegarLoop]: Interpolant automaton has 6 states. [2019-11-28 20:07:12,305 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2019-11-28 20:07:12,305 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2019-11-28 20:07:12,305 INFO L402 BasicCegarLoop]: Found error trace [2019-11-28 20:07:12,305 INFO L410 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2019-11-28 20:07:12,306 INFO L410 AbstractCegarLoop]: === Iteration 8 === [mainErr3ASSERT_VIOLATIONMEMORY_FREE, mainErr0ASSERT_VIOLATIONMEMORY_FREE, mainErr2ASSERT_VIOLATIONMEMORY_FREE, mainErr1ASSERT_VIOLATIONMEMORY_FREE, mainErr9ENSURES_VIOLATIONMEMORY_LEAK, mainErr5ASSERT_VIOLATIONMEMORY_FREE, mainErr8ASSERT_VIOLATIONMEMORY_FREE, mainErr4ASSERT_VIOLATIONMEMORY_FREE, mainErr6ASSERT_VIOLATIONMEMORY_FREE, mainErr7ASSERT_VIOLATIONMEMORY_FREE]=== [2019-11-28 20:07:12,306 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2019-11-28 20:07:12,307 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2019-11-28 20:07:12,307 INFO L163 FreeRefinementEngine]: Executing refinement strategy CAMEL [2019-11-28 20:07:12,307 INFO L348 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [394098991] [2019-11-28 20:07:12,307 INFO L94 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2019-11-28 20:07:12,326 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:07:12,346 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2019-11-28 20:07:12,374 INFO L174 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2019-11-28 20:07:12,374 INFO L475 BasicCegarLoop]: Counterexample might be feasible [2019-11-28 20:07:12,418 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 28.11 08:07:12 BoogieIcfgContainer [2019-11-28 20:07:12,419 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2019-11-28 20:07:12,420 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2019-11-28 20:07:12,420 INFO L271 PluginConnector]: Initializing Witness Printer... [2019-11-28 20:07:12,421 INFO L275 PluginConnector]: Witness Printer initialized [2019-11-28 20:07:12,422 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 28.11 08:07:10" (3/4) ... [2019-11-28 20:07:12,424 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2019-11-28 20:07:12,482 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2019-11-28 20:07:12,482 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2019-11-28 20:07:12,485 INFO L168 Benchmark]: Toolchain (without parser) took 3079.34 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 960.3 MB in the beginning and 926.0 MB in the end (delta: 34.4 MB). Peak memory consumption was 149.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:07:12,486 INFO L168 Benchmark]: CDTParser took 0.36 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. [2019-11-28 20:07:12,487 INFO L168 Benchmark]: CACSL2BoogieTranslator took 675.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. [2019-11-28 20:07:12,488 INFO L168 Benchmark]: Boogie Preprocessor took 67.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. [2019-11-28 20:07:12,488 INFO L168 Benchmark]: RCFGBuilder took 567.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. [2019-11-28 20:07:12,489 INFO L168 Benchmark]: TraceAbstraction took 1700.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 926.0 MB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 11.5 GB. [2019-11-28 20:07:12,490 INFO L168 Benchmark]: Witness Printer took 62.77 ms. Allocated memory is still 1.1 GB. Free memory is still 926.0 MB. There was no memory consumed. Max. memory is 11.5 GB. [2019-11-28 20:07:12,493 INFO L335 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36 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 675.73 ms. Allocated memory was 1.0 GB in the beginning and 1.1 GB in the end (delta: 114.8 MB). Free memory was 960.3 MB in the beginning and 1.1 GB in the end (delta: -135.3 MB). Peak memory consumption was 20.4 MB. Max. memory is 11.5 GB. * Boogie Preprocessor took 67.10 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.1 GB in the end (delta: 6.8 MB). Peak memory consumption was 6.8 MB. Max. memory is 11.5 GB. * RCFGBuilder took 567.52 ms. Allocated memory is still 1.1 GB. Free memory was 1.1 GB in the beginning and 1.0 GB in the end (delta: 39.7 MB). Peak memory consumption was 39.7 MB. Max. memory is 11.5 GB. * TraceAbstraction took 1700.93 ms. Allocated memory is still 1.1 GB. Free memory was 1.0 GB in the beginning and 926.0 MB in the end (delta: 123.2 MB). Peak memory consumption was 123.2 MB. Max. memory is 11.5 GB. * Witness Printer took 62.77 ms. Allocated memory is still 1.1 GB. Free memory is still 926.0 MB. There was no memory consumed. Max. memory is 11.5 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - CounterExampleResult [Line: 554]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L543] struct T* x = ((void *)0); [L544] struct T* y = ((void *)0); [L545] y = malloc(sizeof(*y)) [L546] intptr_t adressY = (intptr_t) y; VAL [adressY=-2, malloc(sizeof(*y))={-2:0}, x={0:0}, y={-2:0}] [L547] free(y) VAL [adressY=-2, malloc(sizeof(*y))={-2:0}, x={0:0}, y={-2:0}] [L547] free(y) VAL [adressY=-2, malloc(sizeof(*y))={-2:0}, x={0:0}, y={-2:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L550] COND TRUE adressX == adressY VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L552] free(x) VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L552] free(x) VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L552] free(x) [L554] free(x) VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L554] free(x) VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] [L554] free(x) VAL [adressX=-2, adressY=-2, malloc(sizeof(*x))={-2:0}, malloc(sizeof(*y))={-2:0}, x={-2:0}, y={-2:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Result: UNSAFE, OverallTime: 1.5s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, HoareTripleCheckerStatistics: 108 SDtfs, 111 SDslu, 84 SDs, 0 SdLazy, 219 SolverSat, 21 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=30occurred 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, 7 MinimizatonAttempts, 0 StatesRemovedByMinimization, 0 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.5s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2654 SizeOfPredicates, 0 NumberOfNonLiveVariables, 0 ConjunctsInSsa, 0 ConjunctsInUnsatCore, 7 InterpolantComputations, 7 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...