./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 35987657 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_1.5.800.v20200727-1323.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/ldv-memsafety/memleaks_test1-2.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 b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:20:37,963 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:20:37,964 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:20:37,988 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:20:37,988 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:20:37,989 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:20:37,990 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:20:37,991 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:20:37,992 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:20:37,993 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:20:37,993 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:20:37,994 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:20:37,995 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:20:37,995 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:20:37,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:20:37,997 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:20:37,997 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:20:38,001 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:20:38,004 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:20:38,009 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:20:38,010 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:20:38,012 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:20:38,013 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:20:38,015 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:20:38,016 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:20:38,018 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:20:38,023 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:20:38,023 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:20:38,024 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:20:38,024 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:20:38,025 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:20:38,025 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:20:38,026 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:20:38,027 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:20:38,027 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:20:38,028 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:20:38,029 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:20:38,029 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:20:38,029 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:20:38,029 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:20:38,030 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:20:38,032 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:20:38,033 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-21 17:20:38,053 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:20:38,053 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:20:38,054 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:20:38,054 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:20:38,054 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:20:38,054 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:20:38,055 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:20:38,055 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:20:38,055 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:20:38,056 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:20:38,056 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:20:38,056 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:20:38,056 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:20:38,056 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:20:38,057 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:20:38,058 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:20:38,058 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:20:38,058 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:20:38,058 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:20:38,058 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:20:38,058 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:20:38,058 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-21 17:20:38,059 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-21 17:20:38,059 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 [2022-07-21 17:20:38,299 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:20:38,316 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:20:38,318 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:20:38,318 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:20:38,319 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:20:38,320 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2022-07-21 17:20:38,354 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702a68566/2233d5f09f2849a0b8fc5b9a43b52a6e/FLAG966132279 [2022-07-21 17:20:38,810 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:20:38,812 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2022-07-21 17:20:38,828 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702a68566/2233d5f09f2849a0b8fc5b9a43b52a6e/FLAG966132279 [2022-07-21 17:20:38,840 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/702a68566/2233d5f09f2849a0b8fc5b9a43b52a6e [2022-07-21 17:20:38,842 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:20:38,843 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:20:38,845 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:20:38,845 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:20:38,848 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:20:38,848 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:38" (1/1) ... [2022-07-21 17:20:38,849 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b9c3a13 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:38, skipping insertion in model container [2022-07-21 17:20:38,850 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:38" (1/1) ... [2022-07-21 17:20:38,854 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:20:38,896 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:20:39,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:20:39,245 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-21 17:20:39,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3f205fdd and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:39, skipping insertion in model container [2022-07-21 17:20:39,246 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:20:39,246 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-21 17:20:39,248 INFO L158 Benchmark]: Toolchain (without parser) took 403.34ms. Allocated memory is still 56.6MB. Free memory was 30.9MB in the beginning and 36.2MB in the end (delta: -5.3MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-21 17:20:39,249 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.3MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:20:39,249 INFO L158 Benchmark]: CACSL2BoogieTranslator took 400.96ms. Allocated memory is still 56.6MB. Free memory was 30.8MB in the beginning and 36.2MB in the end (delta: -5.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. [2022-07-21 17:20:39,251 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 46.1MB. Free memory was 28.3MB in the beginning and 28.3MB in the end (delta: 52.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 400.96ms. Allocated memory is still 56.6MB. Free memory was 30.8MB in the beginning and 36.2MB in the end (delta: -5.5MB). Peak memory consumption was 6.7MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### 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_1.5.800.v20200727-1323.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/ldv-memsafety/memleaks_test1-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-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 b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 --- Real Ultimate output --- This is Ultimate 0.2.2-?-3598765 [2022-07-21 17:20:40,879 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-21 17:20:40,880 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-21 17:20:40,903 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-21 17:20:40,904 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-21 17:20:40,905 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-21 17:20:40,906 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-21 17:20:40,907 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-21 17:20:40,908 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-21 17:20:40,909 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-21 17:20:40,909 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-21 17:20:40,910 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-21 17:20:40,910 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-21 17:20:40,911 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-21 17:20:40,912 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-21 17:20:40,913 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-21 17:20:40,913 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-21 17:20:40,914 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-21 17:20:40,915 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-21 17:20:40,916 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-21 17:20:40,917 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-21 17:20:40,918 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-21 17:20:40,919 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-21 17:20:40,920 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-21 17:20:40,926 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-21 17:20:40,929 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-21 17:20:40,929 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-21 17:20:40,929 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-21 17:20:40,930 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-21 17:20:40,930 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-21 17:20:40,931 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-21 17:20:40,931 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-21 17:20:40,931 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-21 17:20:40,932 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-21 17:20:40,933 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-21 17:20:40,933 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-21 17:20:40,933 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-21 17:20:40,934 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-21 17:20:40,934 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-21 17:20:40,934 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-21 17:20:40,935 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-21 17:20:40,936 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-21 17:20:40,936 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-21 17:20:40,953 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-21 17:20:40,954 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-21 17:20:40,954 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-21 17:20:40,954 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-21 17:20:40,955 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-21 17:20:40,955 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-21 17:20:40,955 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-21 17:20:40,955 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-21 17:20:40,956 INFO L138 SettingsManager]: * Use SBE=true [2022-07-21 17:20:40,956 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-21 17:20:40,956 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-21 17:20:40,956 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-21 17:20:40,956 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-21 17:20:40,956 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-21 17:20:40,957 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-21 17:20:40,957 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-21 17:20:40,957 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-21 17:20:40,957 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-21 17:20:40,957 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-21 17:20:40,958 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-21 17:20:40,958 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-21 17:20:40,958 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-21 17:20:40,958 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-21 17:20:40,958 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-21 17:20:40,958 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-21 17:20:40,959 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-21 17:20:40,959 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-21 17:20:40,959 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:20:40,959 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-21 17:20:40,959 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-21 17:20:40,960 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-21 17:20:40,960 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-21 17:20:40,960 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-21 17:20:40,960 INFO L138 SettingsManager]: * Logic for external solver=AUFBV WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b69b1cc5e7bc7b36d5ea64018b501429b633eb9552e27aac1ef773c6042e4013 [2022-07-21 17:20:41,180 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-21 17:20:41,199 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-21 17:20:41,201 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-21 17:20:41,202 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-21 17:20:41,203 INFO L275 PluginConnector]: CDTParser initialized [2022-07-21 17:20:41,204 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2022-07-21 17:20:41,245 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1153ccc5e/1a77dd9cc5044c6a86a420558efde77b/FLAG205770c5c [2022-07-21 17:20:41,682 INFO L306 CDTParser]: Found 1 translation units. [2022-07-21 17:20:41,683 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test1-2.i [2022-07-21 17:20:41,693 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1153ccc5e/1a77dd9cc5044c6a86a420558efde77b/FLAG205770c5c [2022-07-21 17:20:41,701 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/1153ccc5e/1a77dd9cc5044c6a86a420558efde77b [2022-07-21 17:20:41,702 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-21 17:20:41,703 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-21 17:20:41,704 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-21 17:20:41,704 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-21 17:20:41,707 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-21 17:20:41,707 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:41" (1/1) ... [2022-07-21 17:20:41,708 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@593f30ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:41, skipping insertion in model container [2022-07-21 17:20:41,708 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 21.07 05:20:41" (1/1) ... [2022-07-21 17:20:41,713 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-21 17:20:41,736 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:20:41,980 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:20:41,996 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-21 17:20:42,009 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-21 17:20:42,053 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:20:42,061 INFO L203 MainTranslator]: Completed pre-run [2022-07-21 17:20:42,120 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-21 17:20:42,171 INFO L208 MainTranslator]: Completed translation [2022-07-21 17:20:42,171 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42 WrapperNode [2022-07-21 17:20:42,172 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-21 17:20:42,172 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-21 17:20:42,172 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-21 17:20:42,172 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-21 17:20:42,176 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,205 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,218 INFO L137 Inliner]: procedures = 165, calls = 70, calls flagged for inlining = 21, calls inlined = 3, statements flattened = 22 [2022-07-21 17:20:42,218 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-21 17:20:42,219 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-21 17:20:42,219 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-21 17:20:42,219 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-21 17:20:42,225 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,225 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,230 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,230 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,240 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,242 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,246 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,249 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-21 17:20:42,250 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-21 17:20:42,250 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-21 17:20:42,251 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-21 17:20:42,251 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (1/1) ... [2022-07-21 17:20:42,257 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-21 17:20:42,264 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-21 17:20:42,287 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-21 17:20:42,316 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-21 17:20:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-07-21 17:20:42,327 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-07-21 17:20:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-21 17:20:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-07-21 17:20:42,327 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-21 17:20:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-07-21 17:20:42,328 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-21 17:20:42,328 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-21 17:20:42,432 INFO L234 CfgBuilder]: Building ICFG [2022-07-21 17:20:42,433 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-21 17:20:42,521 INFO L275 CfgBuilder]: Performing block encoding [2022-07-21 17:20:42,525 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-21 17:20:42,525 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-21 17:20:42,527 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:20:42 BoogieIcfgContainer [2022-07-21 17:20:42,527 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-21 17:20:42,528 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-21 17:20:42,528 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-21 17:20:42,530 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-21 17:20:42,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 21.07 05:20:41" (1/3) ... [2022-07-21 17:20:42,531 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bee13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:20:42, skipping insertion in model container [2022-07-21 17:20:42,531 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 21.07 05:20:42" (2/3) ... [2022-07-21 17:20:42,532 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@24bee13d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 21.07 05:20:42, skipping insertion in model container [2022-07-21 17:20:42,532 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:20:42" (3/3) ... [2022-07-21 17:20:42,533 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test1-2.i [2022-07-21 17:20:42,543 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-21 17:20:42,544 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 7 error locations. [2022-07-21 17:20:42,574 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-21 17:20:42,578 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@df7a5d8, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@768838e6 [2022-07-21 17:20:42,579 INFO L358 AbstractCegarLoop]: Starting to check reachability of 7 error locations. [2022-07-21 17:20:42,582 INFO L276 IsEmpty]: Start isEmpty. Operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 22 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:42,587 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 10 [2022-07-21 17:20:42,587 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:20:42,588 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:20:42,588 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-07-21 17:20:42,592 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:20:42,592 INFO L85 PathProgramCache]: Analyzing trace with hash -1422973257, now seen corresponding path program 1 times [2022-07-21 17:20:42,600 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:20:42,601 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [185676805] [2022-07-21 17:20:42,601 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:20:42,601 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:20:42,602 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:20:42,609 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:20:42,610 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-21 17:20:42,687 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:20:42,690 INFO L263 TraceCheckSpWp]: Trace formula consists of 37 conjuncts, 4 conjunts are in the unsatisfiable core [2022-07-21 17:20:42,693 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:20:42,760 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:20:42,760 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:20:42,761 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:20:42,761 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [185676805] [2022-07-21 17:20:42,762 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [185676805] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:20:42,762 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:20:42,763 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:20:42,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1008727168] [2022-07-21 17:20:42,766 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:20:42,768 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:20:42,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:20:42,792 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:20:42,793 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:20:42,794 INFO L87 Difference]: Start difference. First operand has 25 states, 15 states have (on average 1.5333333333333334) internal successors, (23), 22 states have internal predecessors, (23), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:42,819 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:20:42,819 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-07-21 17:20:42,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:20:42,821 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 9 [2022-07-21 17:20:42,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:20:42,826 INFO L225 Difference]: With dead ends: 23 [2022-07-21 17:20:42,826 INFO L226 Difference]: Without dead ends: 21 [2022-07-21 17:20:42,828 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:20:42,832 INFO L413 NwaCegarLoop]: 20 mSDtfsCounter, 14 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 14 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:20:42,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [14 Valid, 61 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:20:42,845 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 21 states. [2022-07-21 17:20:42,855 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 21 to 21. [2022-07-21 17:20:42,860 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 14 states have (on average 1.3571428571428572) internal successors, (19), 18 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:42,861 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-07-21 17:20:42,861 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 9 [2022-07-21 17:20:42,861 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:20:42,862 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-07-21 17:20:42,862 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:42,862 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-07-21 17:20:42,862 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 17:20:42,862 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:20:42,863 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:20:42,870 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-07-21 17:20:43,069 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,070 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-07-21 17:20:43,070 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:20:43,070 INFO L85 PathProgramCache]: Analyzing trace with hash -1162497963, now seen corresponding path program 1 times [2022-07-21 17:20:43,071 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:20:43,071 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23590568] [2022-07-21 17:20:43,071 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:20:43,071 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,072 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:20:43,073 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:20:43,074 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-21 17:20:43,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:20:43,108 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 6 conjunts are in the unsatisfiable core [2022-07-21 17:20:43,109 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:20:43,221 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:20:43,221 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:20:43,221 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:20:43,222 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23590568] [2022-07-21 17:20:43,222 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23590568] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:20:43,222 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:20:43,222 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:20:43,222 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1923737917] [2022-07-21 17:20:43,222 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:20:43,223 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:20:43,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:20:43,223 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:20:43,223 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:20:43,223 INFO L87 Difference]: Start difference. First operand 21 states and 21 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:43,298 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:20:43,298 INFO L93 Difference]: Finished difference Result 35 states and 34 transitions. [2022-07-21 17:20:43,299 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:20:43,299 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-21 17:20:43,299 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:20:43,300 INFO L225 Difference]: With dead ends: 35 [2022-07-21 17:20:43,300 INFO L226 Difference]: Without dead ends: 35 [2022-07-21 17:20:43,300 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:20:43,301 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 28 mSDsluCounter, 21 mSDsCounter, 0 mSdLazyCounter, 51 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 32 SdHoareTripleChecker+Invalid, 53 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 51 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-21 17:20:43,301 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [29 Valid, 32 Invalid, 53 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 51 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-21 17:20:43,302 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2022-07-21 17:20:43,304 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 29. [2022-07-21 17:20:43,304 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 29 states, 21 states have (on average 1.2857142857142858) internal successors, (27), 25 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:20:43,305 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 29 states to 29 states and 30 transitions. [2022-07-21 17:20:43,305 INFO L78 Accepts]: Start accepts. Automaton has 29 states and 30 transitions. Word has length 10 [2022-07-21 17:20:43,305 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:20:43,305 INFO L495 AbstractCegarLoop]: Abstraction has 29 states and 30 transitions. [2022-07-21 17:20:43,305 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:43,305 INFO L276 IsEmpty]: Start isEmpty. Operand 29 states and 30 transitions. [2022-07-21 17:20:43,306 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-07-21 17:20:43,306 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:20:43,306 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:20:43,326 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-21 17:20:43,524 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,525 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-07-21 17:20:43,525 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:20:43,526 INFO L85 PathProgramCache]: Analyzing trace with hash -1133868812, now seen corresponding path program 1 times [2022-07-21 17:20:43,526 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:20:43,526 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1006949330] [2022-07-21 17:20:43,526 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:20:43,526 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,526 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:20:43,528 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:20:43,529 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-21 17:20:43,574 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:20:43,575 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 17:20:43,577 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:20:43,658 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:20:43,658 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:20:43,658 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:20:43,658 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1006949330] [2022-07-21 17:20:43,658 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1006949330] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:20:43,658 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:20:43,659 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:20:43,659 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [858221313] [2022-07-21 17:20:43,659 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:20:43,659 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-07-21 17:20:43,659 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:20:43,659 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-07-21 17:20:43,660 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:20:43,660 INFO L87 Difference]: Start difference. First operand 29 states and 30 transitions. Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:43,696 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:20:43,696 INFO L93 Difference]: Finished difference Result 31 states and 30 transitions. [2022-07-21 17:20:43,697 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-21 17:20:43,697 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 10 [2022-07-21 17:20:43,697 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:20:43,697 INFO L225 Difference]: With dead ends: 31 [2022-07-21 17:20:43,705 INFO L226 Difference]: Without dead ends: 31 [2022-07-21 17:20:43,706 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2022-07-21 17:20:43,707 INFO L413 NwaCegarLoop]: 22 mSDtfsCounter, 22 mSDsluCounter, 40 mSDsCounter, 0 mSdLazyCounter, 46 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 62 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 46 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:20:43,707 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 62 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 46 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:20:43,707 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 31 states. [2022-07-21 17:20:43,709 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 31 to 28. [2022-07-21 17:20:43,709 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 22 states have (on average 1.1363636363636365) internal successors, (25), 24 states have internal predecessors, (25), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:20:43,710 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-07-21 17:20:43,710 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 10 [2022-07-21 17:20:43,710 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:20:43,710 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-07-21 17:20:43,710 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:43,710 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-07-21 17:20:43,711 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-07-21 17:20:43,711 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:20:43,711 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:20:43,725 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-07-21 17:20:43,917 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,917 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-07-21 17:20:43,920 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:20:43,920 INFO L85 PathProgramCache]: Analyzing trace with hash -1677698439, now seen corresponding path program 1 times [2022-07-21 17:20:43,920 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:20:43,920 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [246363975] [2022-07-21 17:20:43,920 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:20:43,921 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:20:43,921 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:20:43,926 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:20:43,928 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-21 17:20:43,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-21 17:20:43,964 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 5 conjunts are in the unsatisfiable core [2022-07-21 17:20:43,966 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-21 17:20:43,989 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-21 17:20:44,009 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-21 17:20:44,009 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-21 17:20:44,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-21 17:20:44,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [246363975] [2022-07-21 17:20:44,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [246363975] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-21 17:20:44,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-21 17:20:44,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-21 17:20:44,010 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [831162531] [2022-07-21 17:20:44,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-21 17:20:44,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-21 17:20:44,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-21 17:20:44,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-21 17:20:44,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:20:44,012 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:44,037 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-21 17:20:44,037 INFO L93 Difference]: Finished difference Result 27 states and 27 transitions. [2022-07-21 17:20:44,037 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-07-21 17:20:44,037 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2022-07-21 17:20:44,038 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-21 17:20:44,038 INFO L225 Difference]: With dead ends: 27 [2022-07-21 17:20:44,038 INFO L226 Difference]: Without dead ends: 27 [2022-07-21 17:20:44,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-07-21 17:20:44,039 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 33 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 38 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 33 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-21 17:20:44,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 38 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 33 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-07-21 17:20:44,040 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2022-07-21 17:20:44,042 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 27. [2022-07-21 17:20:44,042 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 27 states, 22 states have (on average 1.0909090909090908) internal successors, (24), 23 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-21 17:20:44,043 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 27 states to 27 states and 27 transitions. [2022-07-21 17:20:44,043 INFO L78 Accepts]: Start accepts. Automaton has 27 states and 27 transitions. Word has length 11 [2022-07-21 17:20:44,043 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-21 17:20:44,043 INFO L495 AbstractCegarLoop]: Abstraction has 27 states and 27 transitions. [2022-07-21 17:20:44,043 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-07-21 17:20:44,044 INFO L276 IsEmpty]: Start isEmpty. Operand 27 states and 27 transitions. [2022-07-21 17:20:44,044 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-07-21 17:20:44,044 INFO L187 NwaCegarLoop]: Found error trace [2022-07-21 17:20:44,044 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-21 17:20:44,063 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-21 17:20:44,251 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:20:44,251 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 4 more)] === [2022-07-21 17:20:44,252 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-21 17:20:44,252 INFO L85 PathProgramCache]: Analyzing trace with hash 220275033, now seen corresponding path program 1 times [2022-07-21 17:20:44,252 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-21 17:20:44,253 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1942167222] [2022-07-21 17:20:44,253 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-21 17:20:44,253 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-21 17:20:44,253 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-21 17:20:44,255 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-21 17:20:44,257 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-21 17:20:44,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:20:44,287 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-21 17:20:44,298 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-21 17:20:44,311 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-21 17:20:44,312 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-21 17:20:44,312 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr5ASSERT_VIOLATIONMEMORY_FREE (6 of 7 remaining) [2022-07-21 17:20:44,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (5 of 7 remaining) [2022-07-21 17:20:44,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (4 of 7 remaining) [2022-07-21 17:20:44,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (3 of 7 remaining) [2022-07-21 17:20:44,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_FREE (2 of 7 remaining) [2022-07-21 17:20:44,314 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4ASSERT_VIOLATIONMEMORY_FREE (1 of 7 remaining) [2022-07-21 17:20:44,315 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6ASSERT_VIOLATIONMEMORY_LEAK (0 of 7 remaining) [2022-07-21 17:20:44,339 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-21 17:20:44,521 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-21 17:20:44,524 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1] [2022-07-21 17:20:44,527 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-21 17:20:44,539 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 21.07 05:20:44 BoogieIcfgContainer [2022-07-21 17:20:44,540 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-21 17:20:44,540 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-21 17:20:44,540 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-21 17:20:44,541 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-21 17:20:44,541 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 21.07 05:20:42" (3/4) ... [2022-07-21 17:20:44,542 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-21 17:20:44,564 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-21 17:20:44,564 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-21 17:20:44,565 INFO L158 Benchmark]: Toolchain (without parser) took 2861.23ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 51.7MB in the beginning and 58.6MB in the end (delta: -7.0MB). Peak memory consumption was 20.6MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,565 INFO L158 Benchmark]: CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 29.3MB in the beginning and 29.2MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:20:44,565 INFO L158 Benchmark]: CACSL2BoogieTranslator took 467.47ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 43.0MB in the end (delta: 8.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,565 INFO L158 Benchmark]: Boogie Procedure Inliner took 46.29ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,566 INFO L158 Benchmark]: Boogie Preprocessor took 30.33ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-21 17:20:44,566 INFO L158 Benchmark]: RCFGBuilder took 276.62ms. Allocated memory is still 69.2MB. Free memory was 39.7MB in the beginning and 49.6MB in the end (delta: -9.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,566 INFO L158 Benchmark]: TraceAbstraction took 2011.69ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 49.3MB in the beginning and 60.5MB in the end (delta: -11.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,566 INFO L158 Benchmark]: Witness Printer took 23.92ms. Allocated memory is still 96.5MB. Free memory was 60.5MB in the beginning and 58.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-21 17:20:44,568 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16ms. Allocated memory is still 48.2MB. Free memory was 29.3MB in the beginning and 29.2MB in the end (delta: 54.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 467.47ms. Allocated memory is still 69.2MB. Free memory was 51.5MB in the beginning and 43.0MB in the end (delta: 8.4MB). Peak memory consumption was 21.0MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 46.29ms. Allocated memory is still 69.2MB. Free memory was 43.0MB in the beginning and 41.0MB in the end (delta: 2.1MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 30.33ms. Allocated memory is still 69.2MB. Free memory was 41.0MB in the beginning and 39.7MB in the end (delta: 1.3MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 276.62ms. Allocated memory is still 69.2MB. Free memory was 39.7MB in the beginning and 49.6MB in the end (delta: -9.9MB). Peak memory consumption was 11.2MB. Max. memory is 16.1GB. * TraceAbstraction took 2011.69ms. Allocated memory was 69.2MB in the beginning and 96.5MB in the end (delta: 27.3MB). Free memory was 49.3MB in the beginning and 60.5MB in the end (delta: -11.2MB). Peak memory consumption was 15.7MB. Max. memory is 16.1GB. * Witness Printer took 23.92ms. Allocated memory is still 96.5MB. Free memory was 60.5MB in the beginning and 58.6MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 760]: free of unallocated memory possible free of unallocated memory possible We found a FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; VAL [ldv_global_msg_list={1:0}] [L763] CALL entry_point() [L758] CALL, EXPR ldv_malloc(sizeof(int)) VAL [\old(size)=4, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L758] RET, EXPR ldv_malloc(sizeof(int)) VAL [ldv_global_msg_list={1:0}, ldv_malloc(sizeof(int))={2:0}] [L758] int *p = (int *)ldv_malloc(sizeof(int)); [L759] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}] [L759] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}] [L759] free(p) [L760] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}] [L760] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}] [L760] free(p) VAL [ldv_global_msg_list={1:0}, p={2:0}] - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 759]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 760]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 25 locations, 7 error locations. Started 1 CEGAR loops. OverallTime: 2.0s, OverallIterations: 5, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.2s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 65 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 64 mSDsluCounter, 193 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 0 IncrementalHoareTripleChecker+Unchecked, 125 mSDsCounter, 7 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 142 IncrementalHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 7 mSolverCounterUnsat, 68 mSDtfsCounter, 142 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 36 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=29occurred in iteration=2, InterpolantAutomatonStates: 22, 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, 4 MinimizatonAttempts, 9 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.3s InterpolantComputationTime, 54 NumberOfCodeBlocks, 54 NumberOfCodeBlocksAsserted, 5 NumberOfCheckSat, 36 ConstructedInterpolants, 0 QuantifiedInterpolants, 149 SizeOfPredicates, 0 NumberOfNonLiveVariables, 147 ConjunctsInSsa, 20 ConjunctsInUnsatCore, 4 InterpolantComputations, 4 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-21 17:20:44,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-free)