./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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_test19-2.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 923f211672b86aa8fe45eb1b2ab79b66f0b1a761 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -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_test19-2.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 923f211672b86aa8fe45eb1b2ab79b66f0b1a761 ............................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................. Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:17:15,845 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:17:15,847 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:17:15,879 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:17:15,879 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:17:15,882 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:17:15,883 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:17:15,898 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:17:15,900 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:17:15,903 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:17:15,917 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:17:15,921 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:17:15,921 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:17:15,923 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:17:15,924 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:17:15,925 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:17:15,928 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:17:15,929 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:17:15,931 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:17:15,933 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:17:15,936 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:17:15,937 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:17:15,938 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:17:15,939 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:17:15,941 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:17:15,943 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:17:15,944 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:17:15,944 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:17:15,945 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:17:15,946 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:17:15,946 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:17:15,946 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:17:15,947 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:17:15,948 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:17:15,949 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:17:15,949 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:17:15,949 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:17:15,950 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:17:15,950 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:17:15,950 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:17:15,951 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:17:15,952 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:17:15,981 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:17:15,981 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:17:15,982 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:17:15,982 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:17:15,983 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:17:15,984 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:17:15,984 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:17:15,984 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:17:15,984 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:17:15,984 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:17:15,985 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:17:15,985 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:17:15,985 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:17:15,985 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:17:15,985 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:17:15,986 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:17:15,986 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:17:15,987 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:17:15,987 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:17:15,987 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923f211672b86aa8fe45eb1b2ab79b66f0b1a761 [2021-08-27 06:17:16,218 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:17:16,234 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:17:16,236 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:17:16,237 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:17:16,238 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:17:16,239 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2021-08-27 06:17:16,290 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d81231/66bc1db0bd0c42ecb0314052112ae70c/FLAG9f8e2b632 [2021-08-27 06:17:16,735 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:17:16,735 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2021-08-27 06:17:16,752 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d81231/66bc1db0bd0c42ecb0314052112ae70c/FLAG9f8e2b632 [2021-08-27 06:17:17,084 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/c76d81231/66bc1db0bd0c42ecb0314052112ae70c [2021-08-27 06:17:17,086 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:17:17,087 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:17:17,088 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:17:17,088 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:17:17,090 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:17:17,091 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:17" (1/1) ... [2021-08-27 06:17:17,092 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@346c886d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:17, skipping insertion in model container [2021-08-27 06:17:17,092 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:17" (1/1) ... [2021-08-27 06:17:17,096 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:17:17,144 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:17:17,386 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:17:17,396 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-27 06:17:17,397 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1c51ad25 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:17, skipping insertion in model container [2021-08-27 06:17:17,397 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:17:17,397 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:17:17,399 INFO L168 Benchmark]: Toolchain (without parser) took 311.24 ms. Allocated memory is still 65.0 MB. Free memory was 43.9 MB in the beginning and 45.2 MB in the end (delta: -1.3 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:17,399 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:17:17,400 INFO L168 Benchmark]: CACSL2BoogieTranslator took 309.73 ms. Allocated memory is still 65.0 MB. Free memory was 43.7 MB in the beginning and 45.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:17:17,400 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 65.0 MB. Free memory is still 47.0 MB. There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 309.73 ms. Allocated memory is still 65.0 MB. Free memory was 43.7 MB in the beginning and 45.2 MB in the end (delta: -1.5 MB). Peak memory consumption was 12.6 MB. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type 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... ### Bit-precise run ### This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:17:18,725 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:17:18,726 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:17:18,747 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:17:18,748 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:17:18,749 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:17:18,750 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:17:18,751 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:17:18,752 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:17:18,752 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:17:18,753 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:17:18,754 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:17:18,754 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:17:18,755 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:17:18,755 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:17:18,756 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:17:18,757 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:17:18,757 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:17:18,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:17:18,759 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:17:18,760 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:17:18,761 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:17:18,768 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:17:18,769 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:17:18,771 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:17:18,771 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:17:18,771 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:17:18,772 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:17:18,772 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:17:18,773 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:17:18,773 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:17:18,773 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:17:18,774 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:17:18,774 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:17:18,775 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:17:18,775 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:17:18,776 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:17:18,776 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:17:18,776 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:17:18,777 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:17:18,777 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:17:18,779 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:17:18,795 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:17:18,798 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:17:18,799 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:17:18,799 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:17:18,800 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:17:18,801 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:17:18,801 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:17:18,801 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:17:18,801 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:17:18,802 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:17:18,802 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:17:18,802 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:17:18,802 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:17:18,803 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:17:18,804 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:17:18,804 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:17:18,804 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:17:18,804 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:17:18,804 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:17:18,804 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:17:18,804 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:17:18,805 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:17:18,805 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:17:18,805 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:17:18,805 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:17:18,805 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 923f211672b86aa8fe45eb1b2ab79b66f0b1a761 [2021-08-27 06:17:19,063 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:17:19,080 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:17:19,083 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:17:19,084 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:17:19,085 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:17:19,085 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2021-08-27 06:17:19,139 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122b26f6a/ad8089aae28e499abc0b332d099c6d6b/FLAGf06214602 [2021-08-27 06:17:19,544 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:17:19,545 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test19-2.i [2021-08-27 06:17:19,554 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122b26f6a/ad8089aae28e499abc0b332d099c6d6b/FLAGf06214602 [2021-08-27 06:17:19,940 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/122b26f6a/ad8089aae28e499abc0b332d099c6d6b [2021-08-27 06:17:19,942 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:17:19,944 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:17:19,947 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:17:19,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:17:19,950 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:17:19,950 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:19" (1/1) ... [2021-08-27 06:17:19,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@8f0799a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:19, skipping insertion in model container [2021-08-27 06:17:19,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:17:19" (1/1) ... [2021-08-27 06:17:19,956 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:17:19,992 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:17:20,273 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:17:20,287 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:17:20,295 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:17:20,338 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:17:20,343 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:17:20,392 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:17:20,428 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:17:20,428 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20 WrapperNode [2021-08-27 06:17:20,428 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:17:20,429 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:17:20,429 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:17:20,429 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:17:20,436 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,436 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,450 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,450 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,482 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,486 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,489 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,497 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:17:20,497 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:17:20,497 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:17:20,497 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:17:20,498 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (1/1) ... [2021-08-27 06:17:20,506 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:17:20,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:17:20,519 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) [2021-08-27 06:17:20,521 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 [2021-08-27 06:17:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:17:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:17:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:17:20,547 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:17:20,548 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:17:20,549 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:17:20,550 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:17:20,551 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure f19 [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure f19_undo [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure g19 [2021-08-27 06:17:20,552 INFO L138 BoogieDeclarations]: Found implementation of procedure probe_unsafe_19 [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_19 [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:17:20,553 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:17:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:17:20,553 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:17:20,554 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:17:20,555 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:17:20,556 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:17:20,557 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:17:20,558 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:17:20,559 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:17:20,560 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:17:20,561 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:17:20,562 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:17:20,563 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:17:20,564 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:17:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:17:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:17:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:17:20,565 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:17:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:17:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:17:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:17:20,575 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:17:20,576 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:17:20,577 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:17:20,578 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:17:20,579 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:17:20,580 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure f19 [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure f19_undo [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure g19 [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure probe_unsafe_19 [2021-08-27 06:17:20,581 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_19 [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:17:20,582 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:17:20,583 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:17:21,131 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:17:21,445 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:17:21,630 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:17:21,630 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-27 06:17:21,632 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:21 BoogieIcfgContainer [2021-08-27 06:17:21,632 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:17:21,633 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:17:21,633 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:17:21,635 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:17:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:17:19" (1/3) ... [2021-08-27 06:17:21,635 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab0457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:21, skipping insertion in model container [2021-08-27 06:17:21,635 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:17:20" (2/3) ... [2021-08-27 06:17:21,636 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bab0457 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:17:21, skipping insertion in model container [2021-08-27 06:17:21,636 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:21" (3/3) ... [2021-08-27 06:17:21,637 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test19-2.i [2021-08-27 06:17:21,640 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:17:21,640 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 94 error locations. [2021-08-27 06:17:21,667 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:17:21,671 INFO L339 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, mConcurrency=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, mLoopAccelerationTechnique=FAST_UPR [2021-08-27 06:17:21,676 INFO L340 AbstractCegarLoop]: Starting to check reachability of 94 error locations. [2021-08-27 06:17:21,689 INFO L276 IsEmpty]: Start isEmpty. Operand has 161 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 129 states have internal predecessors, (138), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) [2021-08-27 06:17:21,693 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 06:17:21,693 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:17:21,693 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:17:21,694 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting probe_unsafe_19Err0REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:17:21,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:17:21,697 INFO L82 PathProgramCache]: Analyzing trace with hash -498135161, now seen corresponding path program 1 times [2021-08-27 06:17:21,706 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:17:21,707 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [50475420] [2021-08-27 06:17:21,707 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:17:21,708 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:17:21,708 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:17:21,711 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) [2021-08-27 06:17:21,716 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:17:21,897 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:17:21,900 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:17:21,905 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:17:21,980 INFO L388 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 [2021-08-27 06:17:22,110 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:17:22,110 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-08-27 06:17:22,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:17:22,142 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:22,351 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:17:22,352 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:17:22,352 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [50475420] [2021-08-27 06:17:22,353 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [50475420] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:17:22,353 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:17:22,353 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-08-27 06:17:22,354 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1059636691] [2021-08-27 06:17:22,357 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:17:22,357 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:17:22,364 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:17:22,365 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:17:22,366 INFO L87 Difference]: Start difference. First operand has 161 states, 86 states have (on average 1.6046511627906976) internal successors, (138), 129 states have internal predecessors, (138), 18 states have call successors, (18), 15 states have call predecessors, (18), 15 states have return successors, (18), 18 states have call predecessors, (18), 18 states have call successors, (18) Second operand has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:17:27,033 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:17:27,034 INFO L93 Difference]: Finished difference Result 169 states and 192 transitions. [2021-08-27 06:17:27,034 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-27 06:17:27,035 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 15 [2021-08-27 06:17:27,035 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:17:27,041 INFO L225 Difference]: With dead ends: 169 [2021-08-27 06:17:27,042 INFO L226 Difference]: Without dead ends: 166 [2021-08-27 06:17:27,043 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 19 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 206.5ms TimeCoverageRelationStatistics Valid=60, Invalid=150, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:17:27,052 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 166 states. [2021-08-27 06:17:27,066 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 166 to 87. [2021-08-27 06:17:27,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 46 states have (on average 1.608695652173913) internal successors, (74), 68 states have internal predecessors, (74), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-27 06:17:27,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2021-08-27 06:17:27,069 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 15 [2021-08-27 06:17:27,069 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:17:27,070 INFO L470 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2021-08-27 06:17:27,070 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.8333333333333333) internal successors, (11), 7 states have internal predecessors, (11), 3 states have call successors, (6), 4 states have call predecessors, (6), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:17:27,070 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2021-08-27 06:17:27,071 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-08-27 06:17:27,071 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:17:27,071 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:17:27,080 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-27 06:17:27,272 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:17:27,273 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting probe_unsafe_19Err1REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:17:27,273 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:17:27,273 INFO L82 PathProgramCache]: Analyzing trace with hash -498135160, now seen corresponding path program 1 times [2021-08-27 06:17:27,273 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:17:27,274 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1142419009] [2021-08-27 06:17:27,274 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:17:27,274 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:17:27,274 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:17:27,275 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) [2021-08-27 06:17:27,276 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:17:27,440 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:17:27,442 INFO L263 TraceCheckSpWp]: Trace formula consists of 93 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:17:27,445 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:17:27,472 INFO L388 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 [2021-08-27 06:17:27,478 INFO L388 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 [2021-08-27 06:17:29,662 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:17:29,663 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 30 treesize of output 32 [2021-08-27 06:17:29,672 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:17:29,672 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 24 [2021-08-27 06:17:29,700 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:17:29,700 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:17:38,444 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:17:38,444 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:17:38,445 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1142419009] [2021-08-27 06:17:38,445 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1142419009] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:17:38,445 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:17:38,445 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:17:38,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1921635676] [2021-08-27 06:17:38,446 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:17:38,446 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:17:38,447 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:17:38,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=145, Unknown=4, NotChecked=0, Total=182 [2021-08-27 06:17:38,447 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:22:11,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:22:11,820 INFO L93 Difference]: Finished difference Result 185 states and 214 transitions. [2021-08-27 06:22:11,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 23 states. [2021-08-27 06:22:11,820 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 15 [2021-08-27 06:22:11,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:22:11,822 INFO L225 Difference]: With dead ends: 185 [2021-08-27 06:22:11,822 INFO L226 Difference]: Without dead ends: 185 [2021-08-27 06:22:11,823 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 110 ImplicationChecksByTransitivity, 43039.0ms TimeCoverageRelationStatistics Valid=173, Invalid=624, Unknown=15, NotChecked=0, Total=812 [2021-08-27 06:22:11,823 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 185 states. [2021-08-27 06:22:11,828 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 185 to 84. [2021-08-27 06:22:11,829 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 46 states have (on average 1.5217391304347827) internal successors, (70), 65 states have internal predecessors, (70), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-27 06:22:11,830 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 91 transitions. [2021-08-27 06:22:11,830 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 91 transitions. Word has length 15 [2021-08-27 06:22:11,830 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:22:11,830 INFO L470 AbstractCegarLoop]: Abstraction has 84 states and 91 transitions. [2021-08-27 06:22:11,830 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 9 states have (on average 1.5555555555555556) internal successors, (14), 10 states have internal predecessors, (14), 5 states have call successors, (7), 5 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:22:11,830 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 91 transitions. [2021-08-27 06:22:11,831 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 06:22:11,831 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:22:11,831 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:22:11,838 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:22:12,031 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:22:12,032 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting f19Err0REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:22:12,032 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:22:12,033 INFO L82 PathProgramCache]: Analyzing trace with hash 593639727, now seen corresponding path program 1 times [2021-08-27 06:22:12,033 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:22:12,033 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [911118204] [2021-08-27 06:22:12,033 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:22:12,033 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:22:12,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:22:12,043 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) [2021-08-27 06:22:12,043 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:22:12,224 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:22:12,227 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:22:12,228 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:22:12,528 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:22:12,529 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 19 treesize of output 24 [2021-08-27 06:22:12,580 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:22:12,581 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:22:12,953 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:22:12,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:22:12,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [911118204] [2021-08-27 06:22:12,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [911118204] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:22:12,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:22:12,954 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 5] imperfect sequences [] total 7 [2021-08-27 06:22:12,954 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [141799570] [2021-08-27 06:22:12,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-08-27 06:22:12,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:22:12,955 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-08-27 06:22:12,955 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:22:12,955 INFO L87 Difference]: Start difference. First operand 84 states and 91 transitions. Second operand has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:22:14,269 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:22:14,269 INFO L93 Difference]: Finished difference Result 151 states and 175 transitions. [2021-08-27 06:22:14,270 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:22:14,270 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) Word has length 26 [2021-08-27 06:22:14,271 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:22:14,272 INFO L225 Difference]: With dead ends: 151 [2021-08-27 06:22:14,272 INFO L226 Difference]: Without dead ends: 151 [2021-08-27 06:22:14,272 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 40 SyntacticMatches, 6 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 17 ImplicationChecksByTransitivity, 642.8ms TimeCoverageRelationStatistics Valid=62, Invalid=148, Unknown=0, NotChecked=0, Total=210 [2021-08-27 06:22:14,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 151 states. [2021-08-27 06:22:14,276 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 151 to 82. [2021-08-27 06:22:14,276 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 82 states, 46 states have (on average 1.4782608695652173) internal successors, (68), 63 states have internal predecessors, (68), 11 states have call successors, (11), 9 states have call predecessors, (11), 8 states have return successors, (10), 10 states have call predecessors, (10), 10 states have call successors, (10) [2021-08-27 06:22:14,277 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 82 states to 82 states and 89 transitions. [2021-08-27 06:22:14,277 INFO L78 Accepts]: Start accepts. Automaton has 82 states and 89 transitions. Word has length 26 [2021-08-27 06:22:14,277 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:22:14,277 INFO L470 AbstractCegarLoop]: Abstraction has 82 states and 89 transitions. [2021-08-27 06:22:14,278 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 7 states have internal predecessors, (19), 3 states have call successors, (8), 4 states have call predecessors, (8), 3 states have return successors, (4), 2 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:22:14,278 INFO L276 IsEmpty]: Start isEmpty. Operand 82 states and 89 transitions. [2021-08-27 06:22:14,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 06:22:14,278 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:22:14,278 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:22:14,285 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-27 06:22:14,484 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:22:14,485 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting f19Err1REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:22:14,485 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:22:14,485 INFO L82 PathProgramCache]: Analyzing trace with hash 593639728, now seen corresponding path program 1 times [2021-08-27 06:22:14,486 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:22:14,486 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2031422713] [2021-08-27 06:22:14,486 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:22:14,486 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:22:14,486 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:22:14,487 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) [2021-08-27 06:22:14,490 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:22:14,681 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:22:14,684 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 20 conjunts are in the unsatisfiable core [2021-08-27 06:22:14,686 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:22:17,358 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:22:17,359 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 37 treesize of output 39 [2021-08-27 06:22:17,382 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:22:17,382 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 31 treesize of output 31 [2021-08-27 06:22:17,465 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:22:17,465 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:22:34,775 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:22:34,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2031422713] [2021-08-27 06:22:34,776 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:22:34,776 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [879100419] [2021-08-27 06:22:34,776 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:22:34,776 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:22:34,776 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:22:34,793 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:22:34,813 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Waiting until timeout for monitored process [2021-08-27 06:22:35,090 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:22:35,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 138 conjuncts, 24 conjunts are in the unsatisfiable core [2021-08-27 06:22:35,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:22:35,116 INFO L388 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 [2021-08-27 06:22:37,591 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-08-27 06:22:44,080 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:22:44,080 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 17 [2021-08-27 06:22:48,795 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-08-27 06:22:55,183 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:22:55,183 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 28 treesize of output 30 [2021-08-27 06:22:55,413 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:22:55,413 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:11,212 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 4 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:11,216 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [879100419] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 06:24:11,216 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 06:24:11,217 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [11] total 21 [2021-08-27 06:24:11,217 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [909193728] [2021-08-27 06:24:11,217 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:24:11,218 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:11,219 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:24:11,220 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=111, Invalid=1112, Unknown=37, NotChecked=0, Total=1260 [2021-08-27 06:24:11,221 INFO L87 Difference]: Start difference. First operand 82 states and 89 transitions. Second operand has 12 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:24:41,020 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:41,020 INFO L93 Difference]: Finished difference Result 167 states and 188 transitions. [2021-08-27 06:24:41,021 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-08-27 06:24:41,021 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 26 [2021-08-27 06:24:41,021 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:41,022 INFO L225 Difference]: With dead ends: 167 [2021-08-27 06:24:41,022 INFO L226 Difference]: Without dead ends: 167 [2021-08-27 06:24:41,023 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 95 GetRequests, 51 SyntacticMatches, 2 SemanticMatches, 42 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 428 ImplicationChecksByTransitivity, 130801.4ms TimeCoverageRelationStatistics Valid=220, Invalid=1626, Unknown=46, NotChecked=0, Total=1892 [2021-08-27 06:24:41,023 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 167 states. [2021-08-27 06:24:41,037 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 167 to 101. [2021-08-27 06:24:41,037 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 101 states, 60 states have (on average 1.4166666666666667) internal successors, (85), 78 states have internal predecessors, (85), 13 states have call successors, (13), 11 states have call predecessors, (13), 11 states have return successors, (15), 12 states have call predecessors, (15), 12 states have call successors, (15) [2021-08-27 06:24:41,038 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 101 states to 101 states and 113 transitions. [2021-08-27 06:24:41,038 INFO L78 Accepts]: Start accepts. Automaton has 101 states and 113 transitions. Word has length 26 [2021-08-27 06:24:41,038 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:41,039 INFO L470 AbstractCegarLoop]: Abstraction has 101 states and 113 transitions. [2021-08-27 06:24:41,039 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 8 states have (on average 1.875) internal successors, (15), 9 states have internal predecessors, (15), 5 states have call successors, (7), 5 states have call predecessors, (7), 2 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:24:41,039 INFO L276 IsEmpty]: Start isEmpty. Operand 101 states and 113 transitions. [2021-08-27 06:24:41,039 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 06:24:41,040 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:41,040 INFO L512 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:41,051 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:41,251 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (6)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:41,447 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2021-08-27 06:24:41,447 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting f19Err1REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:24:41,447 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:41,447 INFO L82 PathProgramCache]: Analyzing trace with hash 2101191537, now seen corresponding path program 1 times [2021-08-27 06:24:41,448 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:41,448 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [26232905] [2021-08-27 06:24:41,448 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:41,448 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:41,448 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:41,449 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:41,485 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:24:41,727 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:41,730 INFO L263 TraceCheckSpWp]: Trace formula consists of 134 conjuncts, 9 conjunts are in the unsatisfiable core [2021-08-27 06:24:41,731 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:41,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-08-27 06:24:41,842 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 13 treesize of output 9 [2021-08-27 06:24:41,904 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 37 treesize of output 25 [2021-08-27 06:24:41,909 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 10 [2021-08-27 06:24:41,980 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:41,980 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:42,180 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 2 trivial. 0 not checked. [2021-08-27 06:24:42,180 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:42,180 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [26232905] [2021-08-27 06:24:42,180 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [26232905] provided 1 perfect and 1 imperfect interpolant sequences [2021-08-27 06:24:42,180 INFO L186 FreeRefinementEngine]: Constructing automaton from 1 perfect and 1 imperfect interpolant sequences. [2021-08-27 06:24:42,180 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [6] total 6 [2021-08-27 06:24:42,180 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1039113490] [2021-08-27 06:24:42,180 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:24:42,180 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:42,181 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:24:42,181 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:24:42,181 INFO L87 Difference]: Start difference. First operand 101 states and 113 transitions. Second operand has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:24:42,354 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:42,354 INFO L93 Difference]: Finished difference Result 93 states and 101 transitions. [2021-08-27 06:24:42,355 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 06:24:42,355 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 26 [2021-08-27 06:24:42,355 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:42,356 INFO L225 Difference]: With dead ends: 93 [2021-08-27 06:24:42,356 INFO L226 Difference]: Without dead ends: 93 [2021-08-27 06:24:42,356 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 160.6ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:24:42,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2021-08-27 06:24:42,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 90. [2021-08-27 06:24:42,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.3888888888888888) internal successors, (75), 69 states have internal predecessors, (75), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-08-27 06:24:42,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 98 transitions. [2021-08-27 06:24:42,361 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 98 transitions. Word has length 26 [2021-08-27 06:24:42,361 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:42,361 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 98 transitions. [2021-08-27 06:24:42,361 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.6666666666666665) internal successors, (16), 5 states have internal predecessors, (16), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:24:42,361 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 98 transitions. [2021-08-27 06:24:42,362 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 06:24:42,362 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:42,362 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:42,371 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:42,569 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:42,569 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting disconnect_19Err0REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:24:42,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:42,570 INFO L82 PathProgramCache]: Analyzing trace with hash -1653980504, now seen corresponding path program 1 times [2021-08-27 06:24:42,570 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:42,570 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [717769252] [2021-08-27 06:24:42,570 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:42,570 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:42,570 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:42,571 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:42,571 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:24:42,836 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:42,838 INFO L263 TraceCheckSpWp]: Trace formula consists of 120 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:24:42,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:42,924 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 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 18 treesize of output 14 [2021-08-27 06:24:42,969 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 8 [2021-08-27 06:24:43,032 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:43,032 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:43,225 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:43,225 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:43,225 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [717769252] [2021-08-27 06:24:43,226 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [717769252] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:24:43,226 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:24:43,226 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 6 [2021-08-27 06:24:43,226 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [202765914] [2021-08-27 06:24:43,226 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:24:43,226 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:43,227 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:24:43,227 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:24:43,227 INFO L87 Difference]: Start difference. First operand 90 states and 98 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:24:43,380 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:43,380 INFO L93 Difference]: Finished difference Result 90 states and 97 transitions. [2021-08-27 06:24:43,381 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-08-27 06:24:43,381 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 26 [2021-08-27 06:24:43,381 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:43,382 INFO L225 Difference]: With dead ends: 90 [2021-08-27 06:24:43,382 INFO L226 Difference]: Without dead ends: 90 [2021-08-27 06:24:43,382 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 47 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 121.2ms TimeCoverageRelationStatistics Valid=17, Invalid=39, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:24:43,382 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-27 06:24:43,385 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 90. [2021-08-27 06:24:43,385 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 54 states have (on average 1.3703703703703705) internal successors, (74), 69 states have internal predecessors, (74), 11 states have call successors, (11), 10 states have call predecessors, (11), 10 states have return successors, (12), 11 states have call predecessors, (12), 10 states have call successors, (12) [2021-08-27 06:24:43,386 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 97 transitions. [2021-08-27 06:24:43,387 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 97 transitions. Word has length 26 [2021-08-27 06:24:43,387 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:43,387 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 97 transitions. [2021-08-27 06:24:43,387 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (6), 2 states have call predecessors, (6), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:24:43,387 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 97 transitions. [2021-08-27 06:24:43,388 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2021-08-27 06:24:43,388 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:43,388 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:43,396 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:43,592 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:43,593 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting disconnect_19Err0REQUIRES_VIOLATION === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:24:43,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:43,593 INFO L82 PathProgramCache]: Analyzing trace with hash -146428695, now seen corresponding path program 1 times [2021-08-27 06:24:43,593 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:43,593 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [184528782] [2021-08-27 06:24:43,593 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:43,594 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:43,594 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:43,594 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:43,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:24:43,872 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:43,874 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:24:43,875 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:44,018 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:44,019 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:44,262 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:44,263 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:44,263 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [184528782] [2021-08-27 06:24:44,263 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [184528782] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:24:44,263 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:24:44,263 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-27 06:24:44,263 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [320402009] [2021-08-27 06:24:44,263 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:24:44,263 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:24:44,264 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:24:44,264 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:24:44,264 INFO L87 Difference]: Start difference. First operand 90 states and 97 transitions. Second operand has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:24:44,389 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:24:44,389 INFO L93 Difference]: Finished difference Result 112 states and 119 transitions. [2021-08-27 06:24:44,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:24:44,389 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) Word has length 26 [2021-08-27 06:24:44,390 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:24:44,390 INFO L225 Difference]: With dead ends: 112 [2021-08-27 06:24:44,390 INFO L226 Difference]: Without dead ends: 112 [2021-08-27 06:24:44,391 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 53 GetRequests, 43 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 193.7ms TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:24:44,391 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-27 06:24:44,393 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 98. [2021-08-27 06:24:44,393 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 61 states have (on average 1.3770491803278688) internal successors, (84), 76 states have internal predecessors, (84), 11 states have call successors, (11), 10 states have call predecessors, (11), 11 states have return successors, (13), 12 states have call predecessors, (13), 10 states have call successors, (13) [2021-08-27 06:24:44,394 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 108 transitions. [2021-08-27 06:24:44,394 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 108 transitions. Word has length 26 [2021-08-27 06:24:44,394 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:24:44,394 INFO L470 AbstractCegarLoop]: Abstraction has 98 states and 108 transitions. [2021-08-27 06:24:44,394 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 2.6) internal successors, (26), 8 states have internal predecessors, (26), 4 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:24:44,395 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 108 transitions. [2021-08-27 06:24:44,395 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-08-27 06:24:44,395 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:24:44,395 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:24:44,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 06:24:44,605 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:24:44,605 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [f19_undoErr0REQUIRES_VIOLATION, f19_undoErr1REQUIRES_VIOLATION, f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE, f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE (and 90 more)] === [2021-08-27 06:24:44,605 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:24:44,605 INFO L82 PathProgramCache]: Analyzing trace with hash -243695008, now seen corresponding path program 1 times [2021-08-27 06:24:44,606 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:24:44,606 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1470704897] [2021-08-27 06:24:44,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:44,606 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:24:44,606 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:24:44,608 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:24:44,612 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:24:44,909 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:44,911 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:24:44,912 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:44,959 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 06:24:44,959 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-27 06:24:49,475 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:49,475 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:24:53,767 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:24:53,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1470704897] [2021-08-27 06:24:53,767 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:24:53,767 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1879196107] [2021-08-27 06:24:53,767 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:24:53,767 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:24:53,767 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:24:53,769 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:24:53,790 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Waiting until timeout for monitored process [2021-08-27 06:24:54,192 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:24:54,194 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-27 06:24:54,195 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:24:54,237 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-27 06:24:54,238 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 27 [2021-08-27 06:24:58,749 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:24:58,749 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:25:02,963 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:25:02,963 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [243373134] [2021-08-27 06:25:02,963 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:25:02,963 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:25:02,964 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:25:02,964 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:25:02,965 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Waiting until timeout for monitored process [2021-08-27 06:25:03,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:25:03,327 INFO L263 TraceCheckSpWp]: Trace formula consists of 113 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:25:03,328 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:25:07,600 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:25:07,601 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:25:11,821 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:25:11,821 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:25:11,821 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:25:11,821 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:25:11,821 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:25:11,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:25:11,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19_undoErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19_undoErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19_undoErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19_undoErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19_undoErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19Err0REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19Err1REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19Err2REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location f19Err3REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_19Err0REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_19Err1REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_19Err2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_19Err3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location disconnect_19Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:25:11,828 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err0REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err1REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err2REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err3REQUIRES_VIOLATION [2021-08-27 06:25:11,829 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err4REQUIRES_VIOLATION [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err5REQUIRES_VIOLATION [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe_unsafe_19Err8ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,830 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,831 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,832 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,833 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,834 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,835 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:25:11,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:25:11,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:25:11,836 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:25:11,856 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (12)] Ended with exit code 0 [2021-08-27 06:25:12,061 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:25:12,264 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:25:12,457 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true,11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:25:12,461 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:25:12,463 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-27 06:25:12,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:25:12 BoogieIcfgContainer [2021-08-27 06:25:12,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:25:12,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:25:12,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:25:12,469 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:25:12,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:17:21" (3/4) ... [2021-08-27 06:25:12,472 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:25:12,472 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:25:12,473 INFO L168 Benchmark]: Toolchain (without parser) took 472528.84 ms. Allocated memory was 52.4 MB in the beginning and 119.5 MB in the end (delta: 67.1 MB). Free memory was 28.7 MB in the beginning and 76.1 MB in the end (delta: -47.4 MB). Peak memory consumption was 19.1 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:12,473 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:25:12,473 INFO L168 Benchmark]: CACSL2BoogieTranslator took 481.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 44.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:12,474 INFO L168 Benchmark]: Boogie Preprocessor took 67.86 ms. Allocated memory is still 67.1 MB. Free memory was 44.3 MB in the beginning and 39.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:12,474 INFO L168 Benchmark]: RCFGBuilder took 1134.55 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.2 MB in the beginning and 43.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:12,474 INFO L168 Benchmark]: TraceAbstraction took 470835.70 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 43.1 MB in the beginning and 76.3 MB in the end (delta: -33.2 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:25:12,475 INFO L168 Benchmark]: Witness Printer took 3.22 ms. Allocated memory is still 119.5 MB. Free memory was 76.3 MB in the beginning and 76.1 MB in the end (delta: 264.1 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:25:12,478 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 52.4 MB. Free memory was 35.5 MB in the beginning and 35.5 MB in the end (delta: 36.5 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 481.03 ms. Allocated memory was 52.4 MB in the beginning and 67.1 MB in the end (delta: 14.7 MB). Free memory was 28.5 MB in the beginning and 44.3 MB in the end (delta: -15.9 MB). Peak memory consumption was 14.2 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 67.86 ms. Allocated memory is still 67.1 MB. Free memory was 44.3 MB in the beginning and 39.5 MB in the end (delta: 4.9 MB). Peak memory consumption was 4.2 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1134.55 ms. Allocated memory was 67.1 MB in the beginning and 81.8 MB in the end (delta: 14.7 MB). Free memory was 39.2 MB in the beginning and 43.7 MB in the end (delta: -4.4 MB). Peak memory consumption was 25.3 MB. Max. memory is 16.1 GB. * TraceAbstraction took 470835.70 ms. Allocated memory was 81.8 MB in the beginning and 119.5 MB in the end (delta: 37.7 MB). Free memory was 43.1 MB in the beginning and 76.3 MB in the end (delta: -33.2 MB). Peak memory consumption was 59.9 MB. Max. memory is 16.1 GB. * Witness Printer took 3.22 ms. Allocated memory is still 119.5 MB. Free memory was 76.3 MB in the beginning and 76.1 MB in the end (delta: 264.1 kB). There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 803]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 803. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L804] CALL entry_point() [L797] struct A19 a19; [L798] CALL, EXPR probe_unsafe_19(&a19) [L774] int ret = - -3; [L775] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND FALSE !(__VERIFIER_nondet_int()) [L529] return 0; [L775] RET, EXPR ldv_malloc(sizeof(int)) [L775] a->q = (int *)ldv_malloc(sizeof(int)) [L776] EXPR a->q [L776] COND TRUE !a->q [L790] return ret; [L798] RET, EXPR probe_unsafe_19(&a19) [L798] int ret = probe_unsafe_19(&a19); [L799] COND FALSE !(ret==0) [L804] RET entry_point() - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 768]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 762]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 763]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 793]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 775]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 776]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 52 procedures, 401 locations, 94 error locations. Started 1 CEGAR loops. OverallTime: 470794.6ms, OverallIterations: 8, TraceHistogramMax: 2, EmptinessCheckTime: 11.2ms, AutomataDifference: 309642.4ms, DeadEndRemovalTime: 0.0ms, HoareAnnotationTime: 0.0ms, InitialAbstractionConstructionTime: 9.8ms, PartialOrderReductionTime: 0.0ms, HoareTripleCheckerStatistics: 658 SDtfs, 1041 SDslu, 2436 SDs, 0 SdLazy, 1789 SolverSat, 317 SolverUnsat, 124 SolverUnknown, 0 SolverNotchecked, 245245.7ms Time, PredicateUnifierStatistics: 0 DeclaredPredicates, 393 GetRequests, 264 SyntacticMatches, 12 SemanticMatches, 117 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 585 ImplicationChecksByTransitivity, 175165.6ms Time, 0.0ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=161occurred in iteration=0, InterpolantAutomatonStates: 86, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0ms DumpTime, AutomataMinimizationStatistics: 58.0ms AutomataMinimizationTime, 7 MinimizatonAttempts, 332 StatesRemovedByMinimization, 6 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 77.1ms SsaConstructionTime, 192.9ms SatisfiabilityAnalysisTime, 109540.2ms InterpolantComputationTime, 160 NumberOfCodeBlocks, 160 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 306 ConstructedInterpolants, 44 QuantifiedInterpolants, 2189 SizeOfPredicates, 41 NumberOfNonLiveVariables, 832 ConjunctsInSsa, 79 ConjunctsInUnsatCore, 14 InterpolantComputations, 12 PerfectInterpolantSequences, 18/24 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 could not prove your program: unable to determine feasibility of some traces [2021-08-27 06:25:12,640 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...