./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test5.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version c3fed411 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_test5.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 696e33c675918fc8350b482c3d25537e8a3aa795a76532943c9c159afade7e86 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:20:25,699 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:20:25,700 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:20:25,728 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:20:25,730 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:20:25,732 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:20:25,735 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:20:25,738 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:20:25,740 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:20:25,744 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:20:25,745 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:20:25,746 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:20:25,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:20:25,752 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:20:25,752 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:20:25,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:20:25,753 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:20:25,754 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:20:25,755 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:20:25,756 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:20:25,756 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:20:25,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:20:25,771 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:20:25,772 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:20:25,774 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:20:25,774 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:20:25,774 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:20:25,774 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:20:25,775 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:20:25,775 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:20:25,775 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:20:25,776 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:20:25,776 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:20:25,776 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:20:25,777 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:20:25,777 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:20:25,777 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:20:25,778 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:20:25,778 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:20:25,778 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:20:25,779 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:20:25,785 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 21:20:25,806 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:20:25,808 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:20:25,808 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:20:25,809 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:20:25,809 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:20:25,809 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:20:25,810 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:20:25,810 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:20:25,810 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:20:25,810 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:20:25,811 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:20:25,811 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:20:25,811 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:20:25,811 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:20:25,812 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:20:25,813 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:20:25,813 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:20:25,813 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:20:25,813 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:20:25,813 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:20:25,813 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:20:25,813 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:20:25,814 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 21:20:25,814 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 21:20:25,814 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:20:25,814 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 696e33c675918fc8350b482c3d25537e8a3aa795a76532943c9c159afade7e86 [2021-12-18 21:20:26,019 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:20:26,038 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:20:26,040 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:20:26,041 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:20:26,041 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:20:26,042 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test5.i [2021-12-18 21:20:26,092 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69b01a5b/3471c8db93b8448b96bd076461b65f99/FLAG75f41ec10 [2021-12-18 21:20:26,558 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:20:26,561 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test5.i [2021-12-18 21:20:26,577 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69b01a5b/3471c8db93b8448b96bd076461b65f99/FLAG75f41ec10 [2021-12-18 21:20:27,060 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f69b01a5b/3471c8db93b8448b96bd076461b65f99 [2021-12-18 21:20:27,062 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:20:27,063 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:20:27,064 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:20:27,065 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:20:27,067 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:20:27,068 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:27" (1/1) ... [2021-12-18 21:20:27,069 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@177a2d0a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:27, skipping insertion in model container [2021-12-18 21:20:27,069 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:27" (1/1) ... [2021-12-18 21:20:27,074 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:20:27,121 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:20:27,359 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:20:27,375 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) [2021-12-18 21:20:27,376 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7f1467cb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:27, skipping insertion in model container [2021-12-18 21:20:27,377 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:20:27,377 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-18 21:20:27,379 INFO L158 Benchmark]: Toolchain (without parser) took 314.29ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 43.7MB in the beginning and 79.8MB in the end (delta: -36.1MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-18 21:20:27,380 INFO L158 Benchmark]: CDTParser took 0.09ms. Allocated memory is still 86.0MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:20:27,381 INFO L158 Benchmark]: CACSL2BoogieTranslator took 312.68ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 43.5MB in the beginning and 79.8MB in the end (delta: -36.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. [2021-12-18 21:20:27,382 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.09ms. Allocated memory is still 86.0MB. Free memory is still 62.0MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 312.68ms. Allocated memory was 86.0MB in the beginning and 111.1MB in the end (delta: 25.2MB). Free memory was 43.5MB in the beginning and 79.8MB in the end (delta: -36.3MB). Peak memory consumption was 5.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types 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... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test5.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 696e33c675918fc8350b482c3d25537e8a3aa795a76532943c9c159afade7e86 --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 21:20:28,910 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 21:20:28,911 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 21:20:28,940 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 21:20:28,941 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 21:20:28,943 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 21:20:28,945 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 21:20:28,946 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 21:20:28,947 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 21:20:28,948 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 21:20:28,948 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 21:20:28,949 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 21:20:28,949 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 21:20:28,950 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 21:20:28,950 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 21:20:28,951 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 21:20:28,952 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 21:20:28,953 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 21:20:28,954 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 21:20:28,955 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 21:20:28,956 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 21:20:28,961 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 21:20:28,962 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 21:20:28,963 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 21:20:28,966 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 21:20:28,971 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 21:20:28,972 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 21:20:28,973 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 21:20:28,973 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 21:20:28,974 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 21:20:28,974 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 21:20:28,975 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 21:20:28,976 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 21:20:28,977 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 21:20:28,978 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 21:20:28,979 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 21:20:28,979 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 21:20:28,980 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 21:20:28,980 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 21:20:28,981 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 21:20:28,982 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 21:20:28,983 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-18 21:20:29,006 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 21:20:29,006 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 21:20:29,007 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 21:20:29,007 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 21:20:29,008 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 21:20:29,008 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 21:20:29,009 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 21:20:29,009 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 21:20:29,009 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 21:20:29,009 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 21:20:29,010 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 21:20:29,010 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 21:20:29,010 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 21:20:29,010 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 21:20:29,010 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 21:20:29,011 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 21:20:29,012 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 21:20:29,012 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 21:20:29,017 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 21:20:29,017 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 21:20:29,018 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 21:20:29,018 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:20:29,018 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 21:20:29,018 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 21:20:29,018 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 21:20:29,019 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 21:20:29,019 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 21:20:29,019 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 21:20:29,019 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 696e33c675918fc8350b482c3d25537e8a3aa795a76532943c9c159afade7e86 [2021-12-18 21:20:29,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 21:20:29,301 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 21:20:29,303 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 21:20:29,305 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 21:20:29,306 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 21:20:29,307 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test5.i [2021-12-18 21:20:29,372 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22458cb7f/bf0b1087e8d1454fb1121922cbfc62ae/FLAG141310b8a [2021-12-18 21:20:29,844 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 21:20:29,844 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test5.i [2021-12-18 21:20:29,855 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22458cb7f/bf0b1087e8d1454fb1121922cbfc62ae/FLAG141310b8a [2021-12-18 21:20:29,870 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/22458cb7f/bf0b1087e8d1454fb1121922cbfc62ae [2021-12-18 21:20:29,872 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 21:20:29,874 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 21:20:29,875 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 21:20:29,876 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 21:20:29,878 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 21:20:29,878 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:29" (1/1) ... [2021-12-18 21:20:29,879 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@4daf3007 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:29, skipping insertion in model container [2021-12-18 21:20:29,879 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 09:20:29" (1/1) ... [2021-12-18 21:20:29,884 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 21:20:29,926 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:20:30,260 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:20:30,274 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 21:20:30,283 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 21:20:30,329 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:20:30,335 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 21:20:30,375 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 21:20:30,410 INFO L208 MainTranslator]: Completed translation [2021-12-18 21:20:30,410 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30 WrapperNode [2021-12-18 21:20:30,410 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 21:20:30,411 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 21:20:30,411 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 21:20:30,411 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 21:20:30,415 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,429 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,446 INFO L137 Inliner]: procedures = 167, calls = 71, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 26 [2021-12-18 21:20:30,446 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 21:20:30,447 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 21:20:30,447 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 21:20:30,447 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 21:20:30,452 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,453 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,467 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,468 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,481 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,483 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,484 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,489 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 21:20:30,490 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 21:20:30,490 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 21:20:30,490 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 21:20:30,490 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (1/1) ... [2021-12-18 21:20:30,504 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 21:20:30,511 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 21:20:30,520 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) [2021-12-18 21:20:30,540 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 [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-12-18 21:20:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-12-18 21:20:30,560 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 21:20:30,560 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 21:20:30,660 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 21:20:30,661 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 21:20:30,770 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 21:20:30,774 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 21:20:30,774 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-12-18 21:20:30,775 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:20:30 BoogieIcfgContainer [2021-12-18 21:20:30,775 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 21:20:30,776 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 21:20:30,776 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 21:20:30,778 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 21:20:30,778 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 09:20:29" (1/3) ... [2021-12-18 21:20:30,778 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cf3722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:20:30, skipping insertion in model container [2021-12-18 21:20:30,781 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 09:20:30" (2/3) ... [2021-12-18 21:20:30,782 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@54cf3722 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 09:20:30, skipping insertion in model container [2021-12-18 21:20:30,782 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:20:30" (3/3) ... [2021-12-18 21:20:30,787 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test5.i [2021-12-18 21:20:30,791 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 21:20:30,791 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 4 error locations. [2021-12-18 21:20:30,826 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 21:20:30,832 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, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-12-18 21:20:30,833 INFO L340 AbstractCegarLoop]: Starting to check reachability of 4 error locations. [2021-12-18 21:20:30,846 INFO L276 IsEmpty]: Start isEmpty. Operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:30,851 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2021-12-18 21:20:30,851 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:30,852 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:30,852 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:30,856 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:30,857 INFO L85 PathProgramCache]: Analyzing trace with hash 1492643359, now seen corresponding path program 1 times [2021-12-18 21:20:30,865 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:30,865 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [555263136] [2021-12-18 21:20:30,865 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:30,866 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:30,866 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:30,868 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) [2021-12-18 21:20:30,869 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-12-18 21:20:30,942 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:30,945 INFO L263 TraceCheckSpWp]: Trace formula consists of 46 conjuncts, 8 conjunts are in the unsatisfiable core [2021-12-18 21:20:30,949 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:31,050 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:31,050 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:31,051 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:31,051 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [555263136] [2021-12-18 21:20:31,051 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [555263136] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:31,052 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:31,052 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:20:31,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [456756497] [2021-12-18 21:20:31,054 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:31,056 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:20:31,057 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:31,073 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:20:31,074 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:20:31,075 INFO L87 Difference]: Start difference. First operand has 22 states, 15 states have (on average 1.4) internal successors, (21), 19 states have internal predecessors, (21), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Second operand has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,110 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:31,111 INFO L93 Difference]: Finished difference Result 21 states and 22 transitions. [2021-12-18 21:20:31,112 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:20:31,113 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 11 [2021-12-18 21:20:31,113 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:31,123 INFO L225 Difference]: With dead ends: 21 [2021-12-18 21:20:31,124 INFO L226 Difference]: Without dead ends: 19 [2021-12-18 21:20:31,126 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:20:31,133 INFO L933 BasicCegarLoop]: 17 mSDtfsCounter, 24 mSDsluCounter, 44 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 61 SdHoareTripleChecker+Invalid, 19 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:31,135 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [24 Valid, 61 Invalid, 19 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:20:31,146 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 19 states. [2021-12-18 21:20:31,159 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 19 to 19. [2021-12-18 21:20:31,160 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19 states, 14 states have (on average 1.2857142857142858) internal successors, (18), 16 states have internal predecessors, (18), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,160 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19 states to 19 states and 20 transitions. [2021-12-18 21:20:31,161 INFO L78 Accepts]: Start accepts. Automaton has 19 states and 20 transitions. Word has length 11 [2021-12-18 21:20:31,161 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:31,161 INFO L470 AbstractCegarLoop]: Abstraction has 19 states and 20 transitions. [2021-12-18 21:20:31,161 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.8) internal successors, (9), 5 states have internal predecessors, (9), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,161 INFO L276 IsEmpty]: Start isEmpty. Operand 19 states and 20 transitions. [2021-12-18 21:20:31,162 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 21:20:31,162 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:31,162 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:31,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:31,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:31,367 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:31,368 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:31,368 INFO L85 PathProgramCache]: Analyzing trace with hash -972696078, now seen corresponding path program 1 times [2021-12-18 21:20:31,368 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:31,368 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1248186025] [2021-12-18 21:20:31,369 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:31,369 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:31,369 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:31,370 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) [2021-12-18 21:20:31,371 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-12-18 21:20:31,406 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:31,408 INFO L263 TraceCheckSpWp]: Trace formula consists of 47 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 21:20:31,409 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:31,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:31,515 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:31,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:31,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1248186025] [2021-12-18 21:20:31,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1248186025] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:31,516 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:31,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:20:31,516 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [895550677] [2021-12-18 21:20:31,517 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:31,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-12-18 21:20:31,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:31,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-12-18 21:20:31,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=27, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:20:31,518 INFO L87 Difference]: Start difference. First operand 19 states and 20 transitions. Second operand has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,586 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:31,587 INFO L93 Difference]: Finished difference Result 32 states and 32 transitions. [2021-12-18 21:20:31,587 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-12-18 21:20:31,588 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 21:20:31,588 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:31,588 INFO L225 Difference]: With dead ends: 32 [2021-12-18 21:20:31,589 INFO L226 Difference]: Without dead ends: 32 [2021-12-18 21:20:31,589 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 6 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=20, Invalid=36, Unknown=0, NotChecked=0, Total=56 [2021-12-18 21:20:31,590 INFO L933 BasicCegarLoop]: 15 mSDtfsCounter, 32 mSDsluCounter, 41 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 56 SdHoareTripleChecker+Invalid, 54 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:31,590 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [33 Valid, 56 Invalid, 54 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:20:31,591 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 32 states. [2021-12-18 21:20:31,596 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 32 to 26. [2021-12-18 21:20:31,597 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 26 states, 20 states have (on average 1.2) internal successors, (24), 22 states have internal predecessors, (24), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:20:31,601 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 26 states to 26 states and 27 transitions. [2021-12-18 21:20:31,601 INFO L78 Accepts]: Start accepts. Automaton has 26 states and 27 transitions. Word has length 12 [2021-12-18 21:20:31,602 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:31,602 INFO L470 AbstractCegarLoop]: Abstraction has 26 states and 27 transitions. [2021-12-18 21:20:31,602 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,602 INFO L276 IsEmpty]: Start isEmpty. Operand 26 states and 27 transitions. [2021-12-18 21:20:31,602 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-12-18 21:20:31,603 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:31,603 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:31,610 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:31,809 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:31,810 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:31,810 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:31,810 INFO L85 PathProgramCache]: Analyzing trace with hash 770114257, now seen corresponding path program 1 times [2021-12-18 21:20:31,811 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:31,811 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [81619602] [2021-12-18 21:20:31,811 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:31,811 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:31,811 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:31,812 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) [2021-12-18 21:20:31,821 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-12-18 21:20:31,856 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:31,857 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 15 conjunts are in the unsatisfiable core [2021-12-18 21:20:31,858 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:31,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:31,944 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:31,944 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:31,944 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [81619602] [2021-12-18 21:20:31,944 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [81619602] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:31,944 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:31,945 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-12-18 21:20:31,945 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2037235424] [2021-12-18 21:20:31,945 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:31,945 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:20:31,945 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:31,946 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:20:31,946 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:20:31,946 INFO L87 Difference]: Start difference. First operand 26 states and 27 transitions. Second operand has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,970 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:31,970 INFO L93 Difference]: Finished difference Result 27 states and 26 transitions. [2021-12-18 21:20:31,971 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:20:31,971 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-12-18 21:20:31,971 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:31,972 INFO L225 Difference]: With dead ends: 27 [2021-12-18 21:20:31,972 INFO L226 Difference]: Without dead ends: 27 [2021-12-18 21:20:31,972 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:20:31,973 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 9 mSDsluCounter, 65 mSDsCounter, 0 mSdLazyCounter, 22 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 9 SdHoareTripleChecker+Valid, 85 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 22 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:31,973 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [9 Valid, 85 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 22 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:20:31,974 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 27 states. [2021-12-18 21:20:31,975 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 27 to 23. [2021-12-18 21:20:31,975 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 18 states have (on average 1.1111111111111112) internal successors, (20), 19 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:20:31,976 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2021-12-18 21:20:31,976 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 12 [2021-12-18 21:20:31,976 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:31,976 INFO L470 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2021-12-18 21:20:31,976 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 1.6666666666666667) internal successors, (10), 5 states have internal predecessors, (10), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:31,977 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2021-12-18 21:20:31,977 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:20:31,977 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:31,977 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:31,985 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:32,185 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,186 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:32,186 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:32,187 INFO L85 PathProgramCache]: Analyzing trace with hash -88807295, now seen corresponding path program 1 times [2021-12-18 21:20:32,187 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:32,187 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [207084116] [2021-12-18 21:20:32,187 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:32,187 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,187 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:32,189 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) [2021-12-18 21:20:32,191 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-12-18 21:20:32,233 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:32,235 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 21:20:32,236 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:32,270 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 [2021-12-18 21:20:32,329 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:32,329 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:32,329 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:32,329 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [207084116] [2021-12-18 21:20:32,329 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [207084116] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:32,329 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:32,329 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-12-18 21:20:32,329 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1978222431] [2021-12-18 21:20:32,330 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:32,330 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 21:20:32,330 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:32,330 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 21:20:32,330 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-12-18 21:20:32,330 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:32,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:32,374 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-12-18 21:20:32,374 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 21:20:32,374 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-18 21:20:32,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:32,375 INFO L225 Difference]: With dead ends: 22 [2021-12-18 21:20:32,375 INFO L226 Difference]: Without dead ends: 22 [2021-12-18 21:20:32,375 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2021-12-18 21:20:32,375 INFO L933 BasicCegarLoop]: 13 mSDtfsCounter, 4 mSDsluCounter, 29 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 42 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:32,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 42 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:20:32,376 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-18 21:20:32,377 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2021-12-18 21:20:32,377 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 18 states have (on average 1.0555555555555556) internal successors, (19), 18 states have internal predecessors, (19), 1 states have call successors, (1), 1 states have call predecessors, (1), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-12-18 21:20:32,378 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2021-12-18 21:20:32,378 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 13 [2021-12-18 21:20:32,378 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:32,378 INFO L470 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2021-12-18 21:20:32,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.2) internal successors, (11), 5 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:32,378 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2021-12-18 21:20:32,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-12-18 21:20:32,378 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:32,378 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:32,385 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:32,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,580 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:32,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:32,581 INFO L85 PathProgramCache]: Analyzing trace with hash -1896015485, now seen corresponding path program 1 times [2021-12-18 21:20:32,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:32,581 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [496159058] [2021-12-18 21:20:32,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:32,581 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:32,582 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-12-18 21:20:32,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-12-18 21:20:32,621 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:32,622 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 4 conjunts are in the unsatisfiable core [2021-12-18 21:20:32,623 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:32,647 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:32,648 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:32,648 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:32,648 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [496159058] [2021-12-18 21:20:32,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [496159058] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:32,648 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:32,649 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2021-12-18 21:20:32,649 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [360541971] [2021-12-18 21:20:32,649 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:32,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 21:20:32,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:32,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 21:20:32,650 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:20:32,650 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:32,662 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:32,662 INFO L93 Difference]: Finished difference Result 25 states and 24 transitions. [2021-12-18 21:20:32,662 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 21:20:32,662 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-12-18 21:20:32,662 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:32,663 INFO L225 Difference]: With dead ends: 25 [2021-12-18 21:20:32,663 INFO L226 Difference]: Without dead ends: 17 [2021-12-18 21:20:32,663 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 21:20:32,664 INFO L933 BasicCegarLoop]: 20 mSDtfsCounter, 0 mSDsluCounter, 23 mSDsCounter, 0 mSdLazyCounter, 14 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 14 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 14 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:32,664 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 43 Invalid, 14 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 14 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 21:20:32,664 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 17 states. [2021-12-18 21:20:32,665 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 17 to 17. [2021-12-18 21:20:32,665 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 17 states, 14 states have (on average 1.0) internal successors, (14), 14 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:32,666 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 17 states to 17 states and 16 transitions. [2021-12-18 21:20:32,666 INFO L78 Accepts]: Start accepts. Automaton has 17 states and 16 transitions. Word has length 13 [2021-12-18 21:20:32,666 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:32,666 INFO L470 AbstractCegarLoop]: Abstraction has 17 states and 16 transitions. [2021-12-18 21:20:32,666 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.6666666666666665) internal successors, (11), 4 states have internal predecessors, (11), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:32,666 INFO L276 IsEmpty]: Start isEmpty. Operand 17 states and 16 transitions. [2021-12-18 21:20:32,667 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-12-18 21:20:32,667 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 21:20:32,667 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-12-18 21:20:32,675 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:32,872 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,873 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (and 1 more)] === [2021-12-18 21:20:32,873 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 21:20:32,873 INFO L85 PathProgramCache]: Analyzing trace with hash 41783673, now seen corresponding path program 1 times [2021-12-18 21:20:32,873 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 21:20:32,873 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1521027809] [2021-12-18 21:20:32,873 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 21:20:32,873 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 21:20:32,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 21:20:32,874 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) [2021-12-18 21:20:32,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-12-18 21:20:32,911 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 21:20:32,913 INFO L263 TraceCheckSpWp]: Trace formula consists of 53 conjuncts, 14 conjunts are in the unsatisfiable core [2021-12-18 21:20:32,914 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 21:20:35,141 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 21:20:35,142 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 21:20:35,142 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 21:20:35,142 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1521027809] [2021-12-18 21:20:35,142 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1521027809] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 21:20:35,142 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 21:20:35,142 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2021-12-18 21:20:35,143 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1601033543] [2021-12-18 21:20:35,143 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 21:20:35,143 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-12-18 21:20:35,143 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 21:20:35,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-12-18 21:20:35,144 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2021-12-18 21:20:35,144 INFO L87 Difference]: Start difference. First operand 17 states and 16 transitions. Second operand has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:35,150 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 21:20:35,150 INFO L93 Difference]: Finished difference Result 16 states and 15 transitions. [2021-12-18 21:20:35,151 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-12-18 21:20:35,151 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-12-18 21:20:35,151 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 21:20:35,151 INFO L225 Difference]: With dead ends: 16 [2021-12-18 21:20:35,151 INFO L226 Difference]: Without dead ends: 0 [2021-12-18 21:20:35,152 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.1s TimeCoverageRelationStatistics Valid=16, Invalid=55, Unknown=1, NotChecked=0, Total=72 [2021-12-18 21:20:35,152 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 2 mSDsluCounter, 28 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 2 SdHoareTripleChecker+Valid, 36 SdHoareTripleChecker+Invalid, 32 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 25 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 21:20:35,152 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [2 Valid, 36 Invalid, 32 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 25 Unchecked, 0.0s Time] [2021-12-18 21:20:35,153 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 0 states. [2021-12-18 21:20:35,153 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 0 to 0. [2021-12-18 21:20:35,153 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 0 states, 0 states have (on average 0.0) internal successors, (0), 0 states have internal predecessors, (0), 0 states have call successors, (0), 0 states have call predecessors, (0), 0 states have return successors, (0), 0 states have call predecessors, (0), 0 states have call successors, (0) [2021-12-18 21:20:35,153 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 0 states to 0 states and 0 transitions. [2021-12-18 21:20:35,153 INFO L78 Accepts]: Start accepts. Automaton has 0 states and 0 transitions. Word has length 16 [2021-12-18 21:20:35,153 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 21:20:35,153 INFO L470 AbstractCegarLoop]: Abstraction has 0 states and 0 transitions. [2021-12-18 21:20:35,154 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 2.0) internal successors, (14), 8 states have internal predecessors, (14), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-12-18 21:20:35,154 INFO L276 IsEmpty]: Start isEmpty. Operand 0 states and 0 transitions. [2021-12-18 21:20:35,154 INFO L282 IsEmpty]: Finished isEmpty. No accepting run. [2021-12-18 21:20:35,159 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_FREE (3 of 4 remaining) [2021-12-18 21:20:35,160 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_FREE (2 of 4 remaining) [2021-12-18 21:20:35,160 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_FREE (1 of 4 remaining) [2021-12-18 21:20:35,160 INFO L764 garLoopResultBuilder]: Registering result SAFE for location ULTIMATE.startErr3ASSERT_VIOLATIONMEMORY_LEAK (0 of 4 remaining) [2021-12-18 21:20:35,170 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-12-18 21:20:35,366 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-12-18 21:20:35,368 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2021-12-18 21:20:35,369 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 21:20:35,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 09:20:35 BoogieIcfgContainer [2021-12-18 21:20:35,371 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 21:20:35,371 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 21:20:35,371 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 21:20:35,371 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 21:20:35,372 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 09:20:30" (3/4) ... [2021-12-18 21:20:35,373 INFO L137 WitnessPrinter]: Generating witness for correct program [2021-12-18 21:20:35,377 INFO L354 RCFGBacktranslator]: Ignoring RootEdge to procedure ldv_malloc [2021-12-18 21:20:35,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 12 nodes and edges [2021-12-18 21:20:35,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 4 nodes and edges [2021-12-18 21:20:35,379 INFO L910 BoogieBacktranslator]: Reduced CFG by removing 2 nodes and edges [2021-12-18 21:20:35,406 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 21:20:35,406 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 21:20:35,407 INFO L158 Benchmark]: Toolchain (without parser) took 5533.03ms. Allocated memory was 58.7MB in the beginning and 86.0MB in the end (delta: 27.3MB). Free memory was 36.1MB in the beginning and 63.4MB in the end (delta: -27.3MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:20:35,407 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:20:35,407 INFO L158 Benchmark]: CACSL2BoogieTranslator took 534.92ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.9MB in the beginning and 50.4MB in the end (delta: -14.5MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. [2021-12-18 21:20:35,408 INFO L158 Benchmark]: Boogie Procedure Inliner took 35.60ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 48.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 21:20:35,408 INFO L158 Benchmark]: Boogie Preprocessor took 42.06ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 21:20:35,408 INFO L158 Benchmark]: RCFGBuilder took 285.38ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 36.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 21:20:35,408 INFO L158 Benchmark]: TraceAbstraction took 4594.70ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 66.0MB in the end (delta: -29.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. [2021-12-18 21:20:35,409 INFO L158 Benchmark]: Witness Printer took 35.26ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 63.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 21:20:35,410 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 58.7MB. Free memory was 40.7MB in the beginning and 40.7MB in the end (delta: 44.5kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 534.92ms. Allocated memory was 58.7MB in the beginning and 71.3MB in the end (delta: 12.6MB). Free memory was 35.9MB in the beginning and 50.4MB in the end (delta: -14.5MB). Peak memory consumption was 14.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 35.60ms. Allocated memory is still 71.3MB. Free memory was 50.4MB in the beginning and 48.1MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 42.06ms. Allocated memory is still 71.3MB. Free memory was 48.1MB in the beginning and 46.9MB in the end (delta: 1.2MB). There was no memory consumed. Max. memory is 16.1GB. * RCFGBuilder took 285.38ms. Allocated memory is still 71.3MB. Free memory was 46.9MB in the beginning and 36.7MB in the end (delta: 10.2MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * TraceAbstraction took 4594.70ms. Allocated memory was 71.3MB in the beginning and 86.0MB in the end (delta: 14.7MB). Free memory was 36.2MB in the beginning and 66.0MB in the end (delta: -29.7MB). Peak memory consumption was 21.1MB. Max. memory is 16.1GB. * Witness Printer took 35.26ms. Allocated memory is still 86.0MB. Free memory was 66.0MB in the beginning and 63.4MB in the end (delta: 2.5MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - PositiveResult [Line: 763]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 763]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 763]: free always succeeds For all program executions holds that free always succeeds at this location - PositiveResult [Line: 770]: all allocated memory was freed For all program executions holds that all allocated memory was freed at this location - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 22 locations, 4 error locations. Started 1 CEGAR loops. OverallTime: 4.5s, OverallIterations: 6, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 72 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 71 mSDsluCounter, 323 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 25 IncrementalHoareTripleChecker+Unchecked, 230 mSDsCounter, 3 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 154 IncrementalHoareTripleChecker+Invalid, 182 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 3 mSolverCounterUnsat, 93 mSDtfsCounter, 154 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 75 GetRequests, 45 SyntacticMatches, 0 SemanticMatches, 30 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 2.2s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=26occurred in iteration=2, InterpolantAutomatonStates: 38, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.0s AutomataMinimizationTime, 6 MinimizatonAttempts, 10 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 2.7s InterpolantComputationTime, 77 NumberOfCodeBlocks, 77 NumberOfCodeBlocksAsserted, 6 NumberOfCheckSat, 71 ConstructedInterpolants, 11 QuantifiedInterpolants, 404 SizeOfPredicates, 25 NumberOfNonLiveVariables, 279 ConjunctsInSsa, 60 ConjunctsInUnsatCore, 6 InterpolantComputations, 6 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available - AllSpecificationsHoldResult: All specifications hold 4 specifications checked. All of them hold RESULT: Ultimate proved your program to be correct! [2021-12-18 21:20:35,448 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: TRUE