./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 9a8b2e8d Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.3.100.v20150511-1540.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/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 0.1.25-9a8b2e8 [2020-10-20 05:53:20,921 INFO L177 SettingsManager]: Resetting all preferences to default values... [2020-10-20 05:53:20,924 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2020-10-20 05:53:20,972 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2020-10-20 05:53:20,973 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2020-10-20 05:53:20,987 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2020-10-20 05:53:20,988 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2020-10-20 05:53:20,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2020-10-20 05:53:20,995 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2020-10-20 05:53:20,996 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2020-10-20 05:53:20,998 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2020-10-20 05:53:21,001 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2020-10-20 05:53:21,002 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2020-10-20 05:53:21,005 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2020-10-20 05:53:21,008 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2020-10-20 05:53:21,010 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2020-10-20 05:53:21,012 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2020-10-20 05:53:21,015 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2020-10-20 05:53:21,018 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2020-10-20 05:53:21,022 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2020-10-20 05:53:21,026 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2020-10-20 05:53:21,027 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2020-10-20 05:53:21,030 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2020-10-20 05:53:21,031 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2020-10-20 05:53:21,036 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2020-10-20 05:53:21,037 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2020-10-20 05:53:21,037 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2020-10-20 05:53:21,039 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2020-10-20 05:53:21,040 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2020-10-20 05:53:21,043 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2020-10-20 05:53:21,043 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2020-10-20 05:53:21,044 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2020-10-20 05:53:21,054 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2020-10-20 05:53:21,057 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2020-10-20 05:53:21,058 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2020-10-20 05:53:21,059 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2020-10-20 05:53:21,060 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2020-10-20 05:53:21,060 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2020-10-20 05:53:21,060 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2020-10-20 05:53:21,061 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2020-10-20 05:53:21,063 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2020-10-20 05:53:21,064 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2020-10-20 05:53:21,108 INFO L113 SettingsManager]: Loading preferences was successful [2020-10-20 05:53:21,109 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2020-10-20 05:53:21,111 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2020-10-20 05:53:21,112 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2020-10-20 05:53:21,112 INFO L138 SettingsManager]: * Use SBE=true [2020-10-20 05:53:21,112 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2020-10-20 05:53:21,112 INFO L138 SettingsManager]: * sizeof long=4 [2020-10-20 05:53:21,113 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2020-10-20 05:53:21,113 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2020-10-20 05:53:21,113 INFO L138 SettingsManager]: * sizeof POINTER=4 [2020-10-20 05:53:21,114 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2020-10-20 05:53:21,115 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2020-10-20 05:53:21,115 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2020-10-20 05:53:21,116 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2020-10-20 05:53:21,116 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2020-10-20 05:53:21,116 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2020-10-20 05:53:21,116 INFO L138 SettingsManager]: * sizeof long double=12 [2020-10-20 05:53:21,116 INFO L138 SettingsManager]: * Use constant arrays=true [2020-10-20 05:53:21,118 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2020-10-20 05:53:21,118 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2020-10-20 05:53:21,119 INFO L138 SettingsManager]: * To the following directory=./dump/ [2020-10-20 05:53:21,119 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2020-10-20 05:53:21,119 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:53:21,119 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2020-10-20 05:53:21,120 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2020-10-20 05:53:21,120 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2020-10-20 05:53:21,120 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2020-10-20 05:53:21,120 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2020-10-20 05:53:21,121 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 [2020-10-20 05:53:21,331 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2020-10-20 05:53:21,345 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2020-10-20 05:53:21,349 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2020-10-20 05:53:21,350 INFO L271 PluginConnector]: Initializing CDTParser... [2020-10-20 05:53:21,351 INFO L275 PluginConnector]: CDTParser initialized [2020-10-20 05:53:21,352 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-10-20 05:53:21,422 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aae351e2/48b6c17bec7f424fa7baf496eef28947/FLAG187e3bc7e [2020-10-20 05:53:21,927 INFO L306 CDTParser]: Found 1 translation units. [2020-10-20 05:53:21,933 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety/cmp-freed-ptr.i [2020-10-20 05:53:21,959 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aae351e2/48b6c17bec7f424fa7baf496eef28947/FLAG187e3bc7e [2020-10-20 05:53:22,301 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/8aae351e2/48b6c17bec7f424fa7baf496eef28947 [2020-10-20 05:53:22,304 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2020-10-20 05:53:22,309 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2020-10-20 05:53:22,310 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2020-10-20 05:53:22,311 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2020-10-20 05:53:22,314 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2020-10-20 05:53:22,315 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:22,318 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@6ccb791e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22, skipping insertion in model container [2020-10-20 05:53:22,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:22,327 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2020-10-20 05:53:22,373 INFO L178 MainTranslator]: Built tables and reachable declarations [2020-10-20 05:53:22,803 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:53:22,812 INFO L203 MainTranslator]: Completed pre-run [2020-10-20 05:53:22,882 INFO L206 PostProcessor]: Analyzing one entry point: main [2020-10-20 05:53:22,937 INFO L208 MainTranslator]: Completed translation [2020-10-20 05:53:22,938 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22 WrapperNode [2020-10-20 05:53:22,939 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2020-10-20 05:53:22,940 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2020-10-20 05:53:22,940 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2020-10-20 05:53:22,940 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2020-10-20 05:53:22,954 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:22,954 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:22,971 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:22,972 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:23,000 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:23,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:23,004 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... [2020-10-20 05:53:23,010 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2020-10-20 05:53:23,011 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2020-10-20 05:53:23,011 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2020-10-20 05:53:23,011 INFO L275 PluginConnector]: RCFGBuilder initialized [2020-10-20 05:53:23,012 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (1/1) ... No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 Starting monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) Waiting until toolchain timeout for monitored process 1 with z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2020-10-20 05:53:23,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2020-10-20 05:53:23,067 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2020-10-20 05:53:23,067 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2020-10-20 05:53:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2020-10-20 05:53:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2020-10-20 05:53:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2020-10-20 05:53:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2020-10-20 05:53:23,068 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2020-10-20 05:53:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2020-10-20 05:53:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2020-10-20 05:53:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2020-10-20 05:53:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2020-10-20 05:53:23,069 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2020-10-20 05:53:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2020-10-20 05:53:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2020-10-20 05:53:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2020-10-20 05:53:23,070 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2020-10-20 05:53:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2020-10-20 05:53:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2020-10-20 05:53:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2020-10-20 05:53:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2020-10-20 05:53:23,071 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2020-10-20 05:53:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2020-10-20 05:53:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2020-10-20 05:53:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2020-10-20 05:53:23,072 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2020-10-20 05:53:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2020-10-20 05:53:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2020-10-20 05:53:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2020-10-20 05:53:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure select [2020-10-20 05:53:23,073 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2020-10-20 05:53:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2020-10-20 05:53:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2020-10-20 05:53:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2020-10-20 05:53:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure random [2020-10-20 05:53:23,074 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2020-10-20 05:53:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2020-10-20 05:53:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2020-10-20 05:53:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2020-10-20 05:53:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2020-10-20 05:53:23,075 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2020-10-20 05:53:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2020-10-20 05:53:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2020-10-20 05:53:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2020-10-20 05:53:23,076 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2020-10-20 05:53:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2020-10-20 05:53:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2020-10-20 05:53:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2020-10-20 05:53:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2020-10-20 05:53:23,077 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2020-10-20 05:53:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2020-10-20 05:53:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2020-10-20 05:53:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2020-10-20 05:53:23,078 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2020-10-20 05:53:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2020-10-20 05:53:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2020-10-20 05:53:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2020-10-20 05:53:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2020-10-20 05:53:23,079 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2020-10-20 05:53:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2020-10-20 05:53:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2020-10-20 05:53:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2020-10-20 05:53:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2020-10-20 05:53:23,080 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2020-10-20 05:53:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2020-10-20 05:53:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2020-10-20 05:53:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure free [2020-10-20 05:53:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2020-10-20 05:53:23,081 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2020-10-20 05:53:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2020-10-20 05:53:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2020-10-20 05:53:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2020-10-20 05:53:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2020-10-20 05:53:23,082 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2020-10-20 05:53:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2020-10-20 05:53:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2020-10-20 05:53:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2020-10-20 05:53:23,083 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2020-10-20 05:53:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2020-10-20 05:53:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2020-10-20 05:53:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2020-10-20 05:53:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2020-10-20 05:53:23,084 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2020-10-20 05:53:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2020-10-20 05:53:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2020-10-20 05:53:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2020-10-20 05:53:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2020-10-20 05:53:23,085 INFO L130 BoogieDeclarations]: Found specification of procedure system [2020-10-20 05:53:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2020-10-20 05:53:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2020-10-20 05:53:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2020-10-20 05:53:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2020-10-20 05:53:23,086 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2020-10-20 05:53:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2020-10-20 05:53:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure div [2020-10-20 05:53:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2020-10-20 05:53:23,087 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2020-10-20 05:53:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2020-10-20 05:53:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2020-10-20 05:53:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2020-10-20 05:53:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2020-10-20 05:53:23,088 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2020-10-20 05:53:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2020-10-20 05:53:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2020-10-20 05:53:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2020-10-20 05:53:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2020-10-20 05:53:23,089 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2020-10-20 05:53:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2020-10-20 05:53:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2020-10-20 05:53:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2020-10-20 05:53:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2020-10-20 05:53:23,090 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2020-10-20 05:53:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2020-10-20 05:53:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2020-10-20 05:53:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2020-10-20 05:53:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure main [2020-10-20 05:53:23,091 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2020-10-20 05:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2020-10-20 05:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2020-10-20 05:53:23,092 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2020-10-20 05:53:23,600 INFO L293 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2020-10-20 05:53:23,601 INFO L298 CfgBuilder]: Removed 0 assume(true) statements. [2020-10-20 05:53:23,603 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:23 BoogieIcfgContainer [2020-10-20 05:53:23,603 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2020-10-20 05:53:23,605 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2020-10-20 05:53:23,605 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2020-10-20 05:53:23,609 INFO L275 PluginConnector]: TraceAbstraction initialized [2020-10-20 05:53:23,609 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.10 05:53:22" (1/3) ... [2020-10-20 05:53:23,610 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e5d401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:53:23, skipping insertion in model container [2020-10-20 05:53:23,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.10 05:53:22" (2/3) ... [2020-10-20 05:53:23,611 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24e5d401 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.10 05:53:23, skipping insertion in model container [2020-10-20 05:53:23,611 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:23" (3/3) ... [2020-10-20 05:53:23,613 INFO L111 eAbstractionObserver]: Analyzing ICFG cmp-freed-ptr.i [2020-10-20 05:53:23,625 INFO L164 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2020-10-20 05:53:23,633 INFO L176 ceAbstractionStarter]: Appying trace abstraction to program that has 10 error locations. [2020-10-20 05:53:23,646 INFO L253 AbstractCegarLoop]: Starting to check reachability of 10 error locations. [2020-10-20 05:53:23,663 INFO L377 AbstractCegarLoop]: Interprodecural is true [2020-10-20 05:53:23,663 INFO L378 AbstractCegarLoop]: Hoare is false [2020-10-20 05:53:23,664 INFO L379 AbstractCegarLoop]: Compute interpolants for FPandBP [2020-10-20 05:53:23,664 INFO L380 AbstractCegarLoop]: Backedges is STRAIGHT_LINE [2020-10-20 05:53:23,664 INFO L381 AbstractCegarLoop]: Determinization is PREDICATE_ABSTRACTION [2020-10-20 05:53:23,664 INFO L382 AbstractCegarLoop]: Difference is false [2020-10-20 05:53:23,665 INFO L383 AbstractCegarLoop]: Minimize is MINIMIZE_SEVPA [2020-10-20 05:53:23,665 INFO L387 AbstractCegarLoop]: ======== Iteration 0==of CEGAR loop == AllErrorsAtOnce======== [2020-10-20 05:53:23,680 INFO L276 IsEmpty]: Start isEmpty. Operand 30 states. [2020-10-20 05:53:23,688 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2020-10-20 05:53:23,688 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:23,689 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:23,690 INFO L429 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]=== [2020-10-20 05:53:23,694 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:23,695 INFO L82 PathProgramCache]: Analyzing trace with hash 542822380, now seen corresponding path program 1 times [2020-10-20 05:53:23,702 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:23,702 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1414774010] [2020-10-20 05:53:23,703 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:23,812 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:23,907 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:23,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:23,918 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:23,920 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1414774010] [2020-10-20 05:53:23,921 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:23,922 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:53:23,923 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1147329899] [2020-10-20 05:53:23,928 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:53:23,929 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:23,943 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:53:23,945 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:53:23,948 INFO L87 Difference]: Start difference. First operand 30 states. Second operand 4 states. [2020-10-20 05:53:24,048 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,049 INFO L93 Difference]: Finished difference Result 29 states and 29 transitions. [2020-10-20 05:53:24,050 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:53:24,051 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 7 [2020-10-20 05:53:24,052 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,061 INFO L225 Difference]: With dead ends: 29 [2020-10-20 05:53:24,062 INFO L226 Difference]: Without dead ends: 26 [2020-10-20 05:53:24,064 INFO L677 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 [2020-10-20 05:53:24,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 26 states. [2020-10-20 05:53:24,099 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 26 to 26. [2020-10-20 05:53:24,101 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 26 states. [2020-10-20 05:53:24,102 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 26 transitions. [2020-10-20 05:53:24,103 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 26 transitions. Word has length 7 [2020-10-20 05:53:24,103 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,104 INFO L481 AbstractCegarLoop]: Abstraction has 26 states and 26 transitions. [2020-10-20 05:53:24,104 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:53:24,104 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 26 transitions. [2020-10-20 05:53:24,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 9 [2020-10-20 05:53:24,105 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,105 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,105 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2020-10-20 05:53:24,106 INFO L429 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]=== [2020-10-20 05:53:24,106 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,106 INFO L82 PathProgramCache]: Analyzing trace with hash -352375362, now seen corresponding path program 1 times [2020-10-20 05:53:24,107 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,107 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1404433176] [2020-10-20 05:53:24,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,125 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,159 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,162 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,182 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,183 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1404433176] [2020-10-20 05:53:24,183 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,183 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:53:24,183 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2025374854] [2020-10-20 05:53:24,185 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:53:24,186 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,186 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:53:24,186 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:53:24,187 INFO L87 Difference]: Start difference. First operand 26 states and 26 transitions. Second operand 4 states. [2020-10-20 05:53:24,247 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,247 INFO L93 Difference]: Finished difference Result 25 states and 25 transitions. [2020-10-20 05:53:24,248 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:24,248 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 8 [2020-10-20 05:53:24,248 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,249 INFO L225 Difference]: With dead ends: 25 [2020-10-20 05:53:24,249 INFO L226 Difference]: Without dead ends: 25 [2020-10-20 05:53:24,250 INFO L677 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 [2020-10-20 05:53:24,251 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 25 states. [2020-10-20 05:53:24,254 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 25 to 25. [2020-10-20 05:53:24,254 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 25 states. [2020-10-20 05:53:24,255 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 25 states to 25 states and 25 transitions. [2020-10-20 05:53:24,255 INFO L78 Accepts]: Start accepts. Automaton has 25 states and 25 transitions. Word has length 8 [2020-10-20 05:53:24,256 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,256 INFO L481 AbstractCegarLoop]: Abstraction has 25 states and 25 transitions. [2020-10-20 05:53:24,256 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:53:24,256 INFO L276 IsEmpty]: Start isEmpty. Operand 25 states and 25 transitions. [2020-10-20 05:53:24,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2020-10-20 05:53:24,257 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,257 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,257 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2020-10-20 05:53:24,258 INFO L429 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]=== [2020-10-20 05:53:24,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,258 INFO L82 PathProgramCache]: Analyzing trace with hash 1961265710, now seen corresponding path program 1 times [2020-10-20 05:53:24,259 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,259 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [159404845] [2020-10-20 05:53:24,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,272 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,299 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,306 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,307 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [159404845] [2020-10-20 05:53:24,307 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,308 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:53:24,308 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [377938883] [2020-10-20 05:53:24,308 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:53:24,309 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,309 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:53:24,309 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:53:24,310 INFO L87 Difference]: Start difference. First operand 25 states and 25 transitions. Second operand 4 states. [2020-10-20 05:53:24,356 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,356 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2020-10-20 05:53:24,357 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:24,357 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 9 [2020-10-20 05:53:24,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,358 INFO L225 Difference]: With dead ends: 24 [2020-10-20 05:53:24,358 INFO L226 Difference]: Without dead ends: 24 [2020-10-20 05:53:24,359 INFO L677 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 [2020-10-20 05:53:24,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2020-10-20 05:53:24,362 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2020-10-20 05:53:24,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 24 states. [2020-10-20 05:53:24,363 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2020-10-20 05:53:24,364 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 9 [2020-10-20 05:53:24,364 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,364 INFO L481 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2020-10-20 05:53:24,364 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:53:24,365 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2020-10-20 05:53:24,365 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2020-10-20 05:53:24,365 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,366 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,366 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2020-10-20 05:53:24,366 INFO L429 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]=== [2020-10-20 05:53:24,367 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,367 INFO L82 PathProgramCache]: Analyzing trace with hash -714294128, now seen corresponding path program 1 times [2020-10-20 05:53:24,367 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,368 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [739605382] [2020-10-20 05:53:24,368 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,381 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,419 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,421 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,426 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,426 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [739605382] [2020-10-20 05:53:24,427 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,427 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:53:24,427 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277930591] [2020-10-20 05:53:24,428 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:53:24,428 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,428 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:53:24,429 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:53:24,429 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand 4 states. [2020-10-20 05:53:24,468 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,469 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 05:53:24,469 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:24,469 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 11 [2020-10-20 05:53:24,470 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,470 INFO L225 Difference]: With dead ends: 22 [2020-10-20 05:53:24,470 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 05:53:24,471 INFO L677 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 [2020-10-20 05:53:24,472 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 05:53:24,474 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 05:53:24,474 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 05:53:24,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-20 05:53:24,475 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 11 [2020-10-20 05:53:24,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,476 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-20 05:53:24,476 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:53:24,476 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-20 05:53:24,477 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2020-10-20 05:53:24,477 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,477 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,477 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2020-10-20 05:53:24,478 INFO L429 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]=== [2020-10-20 05:53:24,478 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,478 INFO L82 PathProgramCache]: Analyzing trace with hash -668281437, now seen corresponding path program 1 times [2020-10-20 05:53:24,479 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,479 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1487004999] [2020-10-20 05:53:24,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,493 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,550 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,552 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,556 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,556 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1487004999] [2020-10-20 05:53:24,557 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,557 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2020-10-20 05:53:24,557 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [348593130] [2020-10-20 05:53:24,558 INFO L461 AbstractCegarLoop]: Interpolant automaton has 7 states [2020-10-20 05:53:24,558 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,558 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2020-10-20 05:53:24,559 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2020-10-20 05:53:24,559 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 7 states. [2020-10-20 05:53:24,653 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,653 INFO L93 Difference]: Finished difference Result 20 states and 20 transitions. [2020-10-20 05:53:24,654 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2020-10-20 05:53:24,654 INFO L78 Accepts]: Start accepts. Automaton has 7 states. Word has length 12 [2020-10-20 05:53:24,654 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,655 INFO L225 Difference]: With dead ends: 20 [2020-10-20 05:53:24,655 INFO L226 Difference]: Without dead ends: 20 [2020-10-20 05:53:24,655 INFO L677 BasicCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=22, Invalid=50, Unknown=0, NotChecked=0, Total=72 [2020-10-20 05:53:24,656 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 20 states. [2020-10-20 05:53:24,658 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 20 to 20. [2020-10-20 05:53:24,658 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 20 states. [2020-10-20 05:53:24,659 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 20 states to 20 states and 20 transitions. [2020-10-20 05:53:24,659 INFO L78 Accepts]: Start accepts. Automaton has 20 states and 20 transitions. Word has length 12 [2020-10-20 05:53:24,660 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,660 INFO L481 AbstractCegarLoop]: Abstraction has 20 states and 20 transitions. [2020-10-20 05:53:24,660 INFO L482 AbstractCegarLoop]: Interpolant automaton has 7 states. [2020-10-20 05:53:24,660 INFO L276 IsEmpty]: Start isEmpty. Operand 20 states and 20 transitions. [2020-10-20 05:53:24,661 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2020-10-20 05:53:24,661 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,661 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,661 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2020-10-20 05:53:24,662 INFO L429 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]=== [2020-10-20 05:53:24,662 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,662 INFO L82 PathProgramCache]: Analyzing trace with hash 758111986, now seen corresponding path program 1 times [2020-10-20 05:53:24,663 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,663 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1302184203] [2020-10-20 05:53:24,663 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,675 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,701 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,706 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,707 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1302184203] [2020-10-20 05:53:24,707 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,707 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2020-10-20 05:53:24,708 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1132031512] [2020-10-20 05:53:24,708 INFO L461 AbstractCegarLoop]: Interpolant automaton has 4 states [2020-10-20 05:53:24,708 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,709 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2020-10-20 05:53:24,709 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2020-10-20 05:53:24,709 INFO L87 Difference]: Start difference. First operand 20 states and 20 transitions. Second operand 4 states. [2020-10-20 05:53:24,748 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,748 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2020-10-20 05:53:24,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2020-10-20 05:53:24,749 INFO L78 Accepts]: Start accepts. Automaton has 4 states. Word has length 13 [2020-10-20 05:53:24,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,750 INFO L225 Difference]: With dead ends: 22 [2020-10-20 05:53:24,750 INFO L226 Difference]: Without dead ends: 22 [2020-10-20 05:53:24,751 INFO L677 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 [2020-10-20 05:53:24,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2020-10-20 05:53:24,754 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2020-10-20 05:53:24,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 22 states. [2020-10-20 05:53:24,755 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2020-10-20 05:53:24,755 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2020-10-20 05:53:24,756 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,756 INFO L481 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2020-10-20 05:53:24,756 INFO L482 AbstractCegarLoop]: Interpolant automaton has 4 states. [2020-10-20 05:53:24,756 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2020-10-20 05:53:24,757 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2020-10-20 05:53:24,757 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,758 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,758 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2020-10-20 05:53:24,758 INFO L429 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]=== [2020-10-20 05:53:24,759 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,759 INFO L82 PathProgramCache]: Analyzing trace with hash 2034300366, now seen corresponding path program 1 times [2020-10-20 05:53:24,759 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,760 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1179588998] [2020-10-20 05:53:24,760 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,780 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,835 INFO L375 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2020-10-20 05:53:24,837 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2020-10-20 05:53:24,840 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2020-10-20 05:53:24,841 INFO L353 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1179588998] [2020-10-20 05:53:24,841 INFO L219 FreeRefinementEngine]: Constructing automaton from 1 perfect and 0 imperfect interpolant sequences. [2020-10-20 05:53:24,841 INFO L232 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2020-10-20 05:53:24,841 INFO L155 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1948438341] [2020-10-20 05:53:24,842 INFO L461 AbstractCegarLoop]: Interpolant automaton has 6 states [2020-10-20 05:53:24,842 INFO L142 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2020-10-20 05:53:24,842 INFO L142 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2020-10-20 05:53:24,843 INFO L144 InterpolantAutomaton]: CoverageRelationStatistics Valid=10, Invalid=20, Unknown=0, NotChecked=0, Total=30 [2020-10-20 05:53:24,843 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand 6 states. [2020-10-20 05:53:24,915 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2020-10-20 05:53:24,915 INFO L93 Difference]: Finished difference Result 21 states and 21 transitions. [2020-10-20 05:53:24,916 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2020-10-20 05:53:24,916 INFO L78 Accepts]: Start accepts. Automaton has 6 states. Word has length 14 [2020-10-20 05:53:24,916 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2020-10-20 05:53:24,917 INFO L225 Difference]: With dead ends: 21 [2020-10-20 05:53:24,917 INFO L226 Difference]: Without dead ends: 17 [2020-10-20 05:53:24,917 INFO L677 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 [2020-10-20 05:53:24,918 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2020-10-20 05:53:24,919 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2020-10-20 05:53:24,920 INFO L82 GeneralOperation]: Start removeUnreachable. Operand 17 states. [2020-10-20 05:53:24,920 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2020-10-20 05:53:24,921 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 14 [2020-10-20 05:53:24,921 INFO L84 Accepts]: Finished accepts. word is rejected. [2020-10-20 05:53:24,921 INFO L481 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2020-10-20 05:53:24,921 INFO L482 AbstractCegarLoop]: Interpolant automaton has 6 states. [2020-10-20 05:53:24,921 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2020-10-20 05:53:24,922 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2020-10-20 05:53:24,922 INFO L414 BasicCegarLoop]: Found error trace [2020-10-20 05:53:24,922 INFO L422 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2020-10-20 05:53:24,922 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2020-10-20 05:53:24,923 INFO L429 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]=== [2020-10-20 05:53:24,923 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2020-10-20 05:53:24,923 INFO L82 PathProgramCache]: Analyzing trace with hash 1976190218, now seen corresponding path program 1 times [2020-10-20 05:53:24,924 INFO L162 FreeRefinementEngine]: Executing refinement strategy CAMEL [2020-10-20 05:53:24,924 INFO L353 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1464156874] [2020-10-20 05:53:24,924 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2020-10-20 05:53:24,938 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:53:24,938 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:53:24,950 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2020-10-20 05:53:24,951 INFO L221 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2020-10-20 05:53:24,976 INFO L173 FreeRefinementEngine]: Strategy CAMEL found a feasible trace [2020-10-20 05:53:24,977 INFO L523 BasicCegarLoop]: Counterexample might be feasible [2020-10-20 05:53:24,977 WARN L518 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2020-10-20 05:53:25,008 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.10 05:53:25 BoogieIcfgContainer [2020-10-20 05:53:25,009 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2020-10-20 05:53:25,009 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2020-10-20 05:53:25,009 INFO L271 PluginConnector]: Initializing Witness Printer... [2020-10-20 05:53:25,009 INFO L275 PluginConnector]: Witness Printer initialized [2020-10-20 05:53:25,010 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.10 05:53:23" (3/4) ... [2020-10-20 05:53:25,013 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2020-10-20 05:53:25,061 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2020-10-20 05:53:25,062 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2020-10-20 05:53:25,064 INFO L168 Benchmark]: Toolchain (without parser) took 2758.25 ms. Allocated memory was 34.6 MB in the beginning and 55.6 MB in the end (delta: 21.0 MB). Free memory was 16.8 MB in the beginning and 22.3 MB in the end (delta: -5.5 MB). Peak memory consumption was 15.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,065 INFO L168 Benchmark]: CDTParser took 0.29 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,066 INFO L168 Benchmark]: CACSL2BoogieTranslator took 628.82 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 15.9 MB in the beginning and 15.5 MB in the end (delta: 404.0 kB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,067 INFO L168 Benchmark]: Boogie Preprocessor took 70.63 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 15.5 MB in the beginning and 27.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,068 INFO L168 Benchmark]: RCFGBuilder took 592.81 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 27.0 MB in the beginning and 24.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,069 INFO L168 Benchmark]: TraceAbstraction took 1404.13 ms. Allocated memory was 47.2 MB in the beginning and 55.6 MB in the end (delta: 8.4 MB). Free memory was 23.8 MB in the beginning and 25.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,070 INFO L168 Benchmark]: Witness Printer took 52.94 ms. Allocated memory is still 55.6 MB. Free memory was 25.1 MB in the beginning and 22.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 GB. [2020-10-20 05:53:25,074 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.29 ms. Allocated memory is still 32.5 MB. Free memory was 11.1 MB in the beginning and 11.0 MB in the end (delta: 47.4 kB). Peak memory consumption was 47.4 kB. Max. memory is 14.3 GB. * CACSL2BoogieTranslator took 628.82 ms. Allocated memory was 34.6 MB in the beginning and 43.5 MB in the end (delta: 8.9 MB). Free memory was 15.9 MB in the beginning and 15.5 MB in the end (delta: 404.0 kB). Peak memory consumption was 14.5 MB. Max. memory is 14.3 GB. * Boogie Preprocessor took 70.63 ms. Allocated memory was 43.5 MB in the beginning and 44.0 MB in the end (delta: 524.3 kB). Free memory was 15.5 MB in the beginning and 27.0 MB in the end (delta: -11.5 MB). Peak memory consumption was 2.9 MB. Max. memory is 14.3 GB. * RCFGBuilder took 592.81 ms. Allocated memory was 44.0 MB in the beginning and 47.2 MB in the end (delta: 3.1 MB). Free memory was 27.0 MB in the beginning and 24.2 MB in the end (delta: 2.8 MB). Peak memory consumption was 17.4 MB. Max. memory is 14.3 GB. * TraceAbstraction took 1404.13 ms. Allocated memory was 47.2 MB in the beginning and 55.6 MB in the end (delta: 8.4 MB). Free memory was 23.8 MB in the beginning and 25.1 MB in the end (delta: -1.2 MB). Peak memory consumption was 7.2 MB. Max. memory is 14.3 GB. * Witness Printer took 52.94 ms. Allocated memory is still 55.6 MB. Free memory was 25.1 MB in the beginning and 22.3 MB in the end (delta: 2.8 MB). Peak memory consumption was 2.8 MB. Max. memory is 14.3 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=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) VAL [adressY=-1, malloc(sizeof(*y))={-1:0}, x={0:0}, y={-1:0}] [L547] free(y) [L548] x = malloc(sizeof(*x)) [L549] intptr_t adressX = (intptr_t) x; VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L550] COND TRUE adressX == adressY VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L552] free(x) [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] [L554] free(x) VAL [adressX=-1, adressY=-1, malloc(sizeof(*x))={-1:0}, malloc(sizeof(*y))={-1:0}, x={-1:0}, y={-1:0}] - StatisticsResult: Ultimate Automizer benchmark data CFG has 8 procedures, 45 locations, 10 error locations. Started 1 CEGAR loops. VerificationResult: UNSAFE, OverallTime: 1.3s, OverallIterations: 8, TraceHistogramMax: 1, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 111 SDtfs, 112 SDslu, 82 SDs, 0 SdLazy, 210 SolverSat, 20 SolverUnsat, 0 SolverUnknown, 0 SolverNotchecked, 0.2s Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 38 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.2s 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, 0.0s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 90 NumberOfCodeBlocks, 90 NumberOfCodeBlocksAsserted, 8 NumberOfCheckSat, 67 ConstructedInterpolants, 0 QuantifiedInterpolants, 2442 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, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! Received shutdown request...