./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c --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/memsafety-ext3/naturalNumbers1.c -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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:33:17,183 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:33:17,190 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:33:17,228 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:33:17,228 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:33:17,229 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:33:17,230 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:33:17,237 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:33:17,239 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:33:17,242 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:33:17,242 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:33:17,244 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:33:17,244 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:33:17,246 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:33:17,248 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:33:17,251 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:33:17,252 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:33:17,253 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:33:17,255 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:33:17,260 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:33:17,261 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:33:17,262 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:33:17,263 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:33:17,264 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:33:17,268 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:33:17,269 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:33:17,269 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:33:17,270 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:33:17,270 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:33:17,271 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:33:17,272 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:33:17,272 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:33:17,273 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:33:17,274 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:33:17,275 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:33:17,275 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:33:17,276 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:33:17,276 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:33:17,277 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:33:17,277 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:33:17,278 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:33:17,278 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-12-18 22:33:17,301 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:33:17,303 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:33:17,303 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:33:17,304 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:33:17,304 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:33:17,304 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:33:17,305 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:33:17,305 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:33:17,305 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:33:17,305 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:33:17,306 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:33:17,306 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:33:17,306 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:33:17,307 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:33:17,308 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:33:17,308 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:33:17,308 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:33:17,308 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:33:17,308 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:33:17,308 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:17,308 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:33:17,310 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:33:17,310 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-12-18 22:33:17,310 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-12-18 22:33:17,310 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:33:17,310 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-12-18 22:33:17,497 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:33:17,511 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:33:17,514 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:33:17,514 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:33:17,515 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:33:17,516 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-12-18 22:33:17,575 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6625fe410/6bec00e082fd4a8a8d55a9f4e88c9398/FLAG26c7d21c3 [2021-12-18 22:33:17,859 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:33:17,860 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-12-18 22:33:17,863 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6625fe410/6bec00e082fd4a8a8d55a9f4e88c9398/FLAG26c7d21c3 [2021-12-18 22:33:18,309 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/6625fe410/6bec00e082fd4a8a8d55a9f4e88c9398 [2021-12-18 22:33:18,311 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:33:18,311 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:33:18,312 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:18,313 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:33:18,318 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:33:18,318 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:18" (1/1) ... [2021-12-18 22:33:18,319 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63b9a18d and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:18, skipping insertion in model container [2021-12-18 22:33:18,319 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:18" (1/1) ... [2021-12-18 22:33:18,323 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:33:18,330 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:33:18,418 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:18,434 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 22:33:18,438 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@ed1d239 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:18, skipping insertion in model container [2021-12-18 22:33:18,439 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:18,439 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-12-18 22:33:18,440 INFO L158 Benchmark]: Toolchain (without parser) took 128.01ms. Allocated memory is still 111.1MB. Free memory was 82.8MB in the beginning and 88.1MB in the end (delta: -5.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 22:33:18,441 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:18,441 INFO L158 Benchmark]: CACSL2BoogieTranslator took 126.40ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 88.1MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 22:33:18,442 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.14ms. Allocated memory is still 111.1MB. Free memory is still 68.6MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 126.40ms. Allocated memory is still 111.1MB. Free memory was 82.5MB in the beginning and 88.1MB in the end (delta: -5.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 15]: 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/memsafety-ext3/naturalNumbers1.c -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 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c --- Real Ultimate output --- This is Ultimate 0.2.2-tmp.no-commuhash-c3fed41 [2021-12-18 22:33:19,971 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-12-18 22:33:19,975 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-12-18 22:33:20,009 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-12-18 22:33:20,010 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-12-18 22:33:20,013 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-12-18 22:33:20,014 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-12-18 22:33:20,018 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-12-18 22:33:20,022 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-12-18 22:33:20,025 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-12-18 22:33:20,026 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-12-18 22:33:20,027 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-12-18 22:33:20,028 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-12-18 22:33:20,030 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-12-18 22:33:20,031 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-12-18 22:33:20,033 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-12-18 22:33:20,034 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-12-18 22:33:20,035 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-12-18 22:33:20,037 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-12-18 22:33:20,041 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-12-18 22:33:20,042 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-12-18 22:33:20,043 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-12-18 22:33:20,044 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-12-18 22:33:20,045 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-12-18 22:33:20,050 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-12-18 22:33:20,050 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-12-18 22:33:20,050 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-12-18 22:33:20,052 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-12-18 22:33:20,052 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-12-18 22:33:20,053 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-12-18 22:33:20,053 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-12-18 22:33:20,053 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-12-18 22:33:20,055 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-12-18 22:33:20,055 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-12-18 22:33:20,056 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-12-18 22:33:20,056 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-12-18 22:33:20,057 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-12-18 22:33:20,057 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-12-18 22:33:20,057 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-12-18 22:33:20,058 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-12-18 22:33:20,059 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-12-18 22:33:20,059 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-12-18 22:33:20,089 INFO L113 SettingsManager]: Loading preferences was successful [2021-12-18 22:33:20,089 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-12-18 22:33:20,090 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-12-18 22:33:20,090 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-12-18 22:33:20,090 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-12-18 22:33:20,091 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-12-18 22:33:20,092 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-12-18 22:33:20,092 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-12-18 22:33:20,092 INFO L138 SettingsManager]: * Use SBE=true [2021-12-18 22:33:20,092 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-12-18 22:33:20,093 INFO L138 SettingsManager]: * sizeof long=4 [2021-12-18 22:33:20,093 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-12-18 22:33:20,093 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-12-18 22:33:20,094 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-12-18 22:33:20,095 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-12-18 22:33:20,095 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-12-18 22:33:20,095 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-12-18 22:33:20,095 INFO L138 SettingsManager]: * sizeof long double=12 [2021-12-18 22:33:20,095 INFO L138 SettingsManager]: * Use constant arrays=true [2021-12-18 22:33:20,096 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-12-18 22:33:20,096 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-12-18 22:33:20,096 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-12-18 22:33:20,096 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:20,096 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-12-18 22:33:20,096 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-12-18 22:33:20,097 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-12-18 22:33:20,097 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-12-18 22:33:20,097 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-12-18 22:33:20,097 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-12-18 22:33:20,097 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 68fe5d136456ecb82ea00426715bf936d3e38ca581ddd26cec97e5010ad5777c [2021-12-18 22:33:20,399 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-12-18 22:33:20,418 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-12-18 22:33:20,420 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-12-18 22:33:20,423 INFO L271 PluginConnector]: Initializing CDTParser... [2021-12-18 22:33:20,423 INFO L275 PluginConnector]: CDTParser initialized [2021-12-18 22:33:20,424 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-12-18 22:33:20,501 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525492324/2f1bcd00eb5d4efe86d88ee7547e6823/FLAG67bd5d0b4 [2021-12-18 22:33:20,864 INFO L306 CDTParser]: Found 1 translation units. [2021-12-18 22:33:20,865 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/memsafety-ext3/naturalNumbers1.c [2021-12-18 22:33:20,870 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525492324/2f1bcd00eb5d4efe86d88ee7547e6823/FLAG67bd5d0b4 [2021-12-18 22:33:21,289 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/525492324/2f1bcd00eb5d4efe86d88ee7547e6823 [2021-12-18 22:33:21,290 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-12-18 22:33:21,291 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-12-18 22:33:21,294 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:21,294 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-12-18 22:33:21,296 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-12-18 22:33:21,297 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,298 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@29ec4354 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21, skipping insertion in model container [2021-12-18 22:33:21,298 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,305 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-12-18 22:33:21,313 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:33:21,403 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:21,411 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-12-18 22:33:21,412 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-12-18 22:33:21,416 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:21,420 INFO L203 MainTranslator]: Completed pre-run [2021-12-18 22:33:21,432 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-12-18 22:33:21,441 INFO L208 MainTranslator]: Completed translation [2021-12-18 22:33:21,442 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21 WrapperNode [2021-12-18 22:33:21,442 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-12-18 22:33:21,443 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:21,443 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-12-18 22:33:21,443 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-12-18 22:33:21,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,480 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,496 INFO L137 Inliner]: procedures = 11, calls = 17, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 42 [2021-12-18 22:33:21,496 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-12-18 22:33:21,497 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-12-18 22:33:21,497 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-12-18 22:33:21,497 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-12-18 22:33:21,502 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,502 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,504 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,504 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,508 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,510 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,512 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-12-18 22:33:21,513 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-12-18 22:33:21,513 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-12-18 22:33:21,513 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-12-18 22:33:21,514 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (1/1) ... [2021-12-18 22:33:21,519 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-12-18 22:33:21,528 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-12-18 22:33:21,539 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 22:33:21,551 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 22:33:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-12-18 22:33:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~intINTTYPE1 [2021-12-18 22:33:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-12-18 22:33:21,561 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-12-18 22:33:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-12-18 22:33:21,561 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-12-18 22:33:21,603 INFO L236 CfgBuilder]: Building ICFG [2021-12-18 22:33:21,604 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-12-18 22:33:21,751 INFO L277 CfgBuilder]: Performing block encoding [2021-12-18 22:33:21,755 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-12-18 22:33:21,755 INFO L301 CfgBuilder]: Removed 1 assume(true) statements. [2021-12-18 22:33:21,757 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:21 BoogieIcfgContainer [2021-12-18 22:33:21,757 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-12-18 22:33:21,758 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-12-18 22:33:21,758 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-12-18 22:33:21,760 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-12-18 22:33:21,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 18.12 10:33:21" (1/3) ... [2021-12-18 22:33:21,761 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbd8dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:21, skipping insertion in model container [2021-12-18 22:33:21,761 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 18.12 10:33:21" (2/3) ... [2021-12-18 22:33:21,762 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@5bbd8dd4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 18.12 10:33:21, skipping insertion in model container [2021-12-18 22:33:21,762 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:21" (3/3) ... [2021-12-18 22:33:21,763 INFO L111 eAbstractionObserver]: Analyzing ICFG naturalNumbers1.c [2021-12-18 22:33:21,766 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-12-18 22:33:21,767 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 3 error locations. [2021-12-18 22:33:21,832 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-12-18 22:33:21,841 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 22:33:21,842 INFO L340 AbstractCegarLoop]: Starting to check reachability of 3 error locations. [2021-12-18 22:33:21,862 INFO L276 IsEmpty]: Start isEmpty. Operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 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 22:33:21,869 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:21,869 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:21,870 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:21,870 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:21,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:21,878 INFO L85 PathProgramCache]: Analyzing trace with hash 925797, now seen corresponding path program 1 times [2021-12-18 22:33:21,886 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:21,887 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1381348603] [2021-12-18 22:33:21,888 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:21,888 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:21,889 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:21,890 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 22:33:21,927 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 22:33:21,964 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:21,966 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 5 conjunts are in the unsatisfiable core [2021-12-18 22:33:21,970 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:22,061 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 22:33:22,082 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 22:33:22,082 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 22:33:22,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 22:33:22,083 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1381348603] [2021-12-18 22:33:22,083 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1381348603] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:22,083 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:22,083 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:22,084 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1943779936] [2021-12-18 22:33:22,085 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:22,087 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:22,088 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 22:33:22,108 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:22,109 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:22,110 INFO L87 Difference]: Start difference. First operand has 13 states, 9 states have (on average 1.6666666666666667) internal successors, (15), 12 states have internal predecessors, (15), 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) Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:33:22,134 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:22,135 INFO L93 Difference]: Finished difference Result 12 states and 13 transitions. [2021-12-18 22:33:22,139 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:22,140 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-12-18 22:33:22,141 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:22,145 INFO L225 Difference]: With dead ends: 12 [2021-12-18 22:33:22,145 INFO L226 Difference]: Without dead ends: 10 [2021-12-18 22:33:22,147 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:22,149 INFO L933 BasicCegarLoop]: 10 mSDtfsCounter, 6 mSDsluCounter, 1 mSDsCounter, 0 mSdLazyCounter, 7 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 11 SdHoareTripleChecker+Invalid, 7 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 7 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:22,150 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 11 Invalid, 7 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 7 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:22,160 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10 states. [2021-12-18 22:33:22,164 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10 to 10. [2021-12-18 22:33:22,165 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 10 states, 8 states have (on average 1.375) internal successors, (11), 9 states have internal predecessors, (11), 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 22:33:22,165 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 10 states to 10 states and 11 transitions. [2021-12-18 22:33:22,166 INFO L78 Accepts]: Start accepts. Automaton has 10 states and 11 transitions. Word has length 4 [2021-12-18 22:33:22,166 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:22,167 INFO L470 AbstractCegarLoop]: Abstraction has 10 states and 11 transitions. [2021-12-18 22:33:22,167 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:33:22,168 INFO L276 IsEmpty]: Start isEmpty. Operand 10 states and 11 transitions. [2021-12-18 22:33:22,168 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 5 [2021-12-18 22:33:22,168 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:22,169 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1] [2021-12-18 22:33:22,175 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-12-18 22:33:22,370 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 22:33:22,370 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:22,371 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:22,371 INFO L85 PathProgramCache]: Analyzing trace with hash 925798, now seen corresponding path program 1 times [2021-12-18 22:33:22,371 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:22,371 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1994458838] [2021-12-18 22:33:22,371 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:22,372 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:22,372 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:22,373 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 22:33:22,374 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 22:33:22,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:22,415 INFO L263 TraceCheckSpWp]: Trace formula consists of 32 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 22:33:22,416 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:22,432 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 22:33:22,451 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 22:33:22,451 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 22:33:22,452 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 22:33:22,452 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1994458838] [2021-12-18 22:33:22,452 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1994458838] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:22,452 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:22,452 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2021-12-18 22:33:22,453 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1779893741] [2021-12-18 22:33:22,453 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:22,454 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-12-18 22:33:22,454 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 22:33:22,454 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-12-18 22:33:22,454 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:22,455 INFO L87 Difference]: Start difference. First operand 10 states and 11 transitions. Second operand has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:33:22,478 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:22,478 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-12-18 22:33:22,479 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-12-18 22:33:22,479 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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) Word has length 4 [2021-12-18 22:33:22,479 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:22,480 INFO L225 Difference]: With dead ends: 16 [2021-12-18 22:33:22,480 INFO L226 Difference]: Without dead ends: 16 [2021-12-18 22:33:22,480 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 3 GetRequests, 2 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-12-18 22:33:22,481 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 4 mSDsluCounter, 5 mSDsCounter, 0 mSdLazyCounter, 8 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 13 SdHoareTripleChecker+Invalid, 9 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 8 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:22,481 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 13 Invalid, 9 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 8 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:22,481 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-18 22:33:22,483 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 12. [2021-12-18 22:33:22,483 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 12 states, 10 states have (on average 1.3) internal successors, (13), 11 states have internal predecessors, (13), 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 22:33:22,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 12 states to 12 states and 13 transitions. [2021-12-18 22:33:22,483 INFO L78 Accepts]: Start accepts. Automaton has 12 states and 13 transitions. Word has length 4 [2021-12-18 22:33:22,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:22,483 INFO L470 AbstractCegarLoop]: Abstraction has 12 states and 13 transitions. [2021-12-18 22:33:22,483 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 2.0) internal successors, (4), 3 states have internal predecessors, (4), 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 22:33:22,484 INFO L276 IsEmpty]: Start isEmpty. Operand 12 states and 13 transitions. [2021-12-18 22:33:22,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-18 22:33:22,484 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:22,484 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:22,505 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-12-18 22:33:22,690 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 22:33:22,691 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:22,691 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:22,691 INFO L85 PathProgramCache]: Analyzing trace with hash 1810601999, now seen corresponding path program 1 times [2021-12-18 22:33:22,692 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:22,692 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [791913402] [2021-12-18 22:33:22,692 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:22,692 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:22,692 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:22,693 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 22:33:22,695 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 22:33:22,723 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:22,724 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 9 conjunts are in the unsatisfiable core [2021-12-18 22:33:22,726 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:22,793 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 22:33:22,793 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-12-18 22:33:22,809 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 22:33:22,810 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-12-18 22:33:22,810 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 22:33:22,810 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [791913402] [2021-12-18 22:33:22,810 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [791913402] provided 1 perfect and 0 imperfect interpolant sequences [2021-12-18 22:33:22,810 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-12-18 22:33:22,811 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2021-12-18 22:33:22,811 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [563522620] [2021-12-18 22:33:22,811 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-12-18 22:33:22,811 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-12-18 22:33:22,811 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 22:33:22,812 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-12-18 22:33:22,812 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-12-18 22:33:22,812 INFO L87 Difference]: Start difference. First operand 12 states and 13 transitions. Second operand has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 22:33:22,836 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:22,836 INFO L93 Difference]: Finished difference Result 13 states and 14 transitions. [2021-12-18 22:33:22,837 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-12-18 22:33:22,837 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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) Word has length 7 [2021-12-18 22:33:22,837 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:22,838 INFO L225 Difference]: With dead ends: 13 [2021-12-18 22:33:22,838 INFO L226 Difference]: Without dead ends: 13 [2021-12-18 22:33:22,838 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 7 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-12-18 22:33:22,839 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 1 mSDsluCounter, 11 mSDsCounter, 0 mSdLazyCounter, 6 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 1 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 6 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 5 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:22,839 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [1 Valid, 19 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 6 Invalid, 0 Unknown, 5 Unchecked, 0.0s Time] [2021-12-18 22:33:22,840 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 13 states. [2021-12-18 22:33:22,840 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 13 to 13. [2021-12-18 22:33:22,841 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13 states, 11 states have (on average 1.2727272727272727) internal successors, (14), 12 states have internal predecessors, (14), 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 22:33:22,841 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13 states to 13 states and 14 transitions. [2021-12-18 22:33:22,841 INFO L78 Accepts]: Start accepts. Automaton has 13 states and 14 transitions. Word has length 7 [2021-12-18 22:33:22,841 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:22,841 INFO L470 AbstractCegarLoop]: Abstraction has 13 states and 14 transitions. [2021-12-18 22:33:22,842 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 1.75) internal successors, (7), 4 states have internal predecessors, (7), 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 22:33:22,842 INFO L276 IsEmpty]: Start isEmpty. Operand 13 states and 14 transitions. [2021-12-18 22:33:22,842 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2021-12-18 22:33:22,842 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:22,842 INFO L514 BasicCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1] [2021-12-18 22:33:22,861 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 22:33:23,048 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 22:33:23,051 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:23,051 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:23,051 INFO L85 PathProgramCache]: Analyzing trace with hash 1810603474, now seen corresponding path program 1 times [2021-12-18 22:33:23,052 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:23,052 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [721012084] [2021-12-18 22:33:23,052 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:23,052 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:23,052 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:23,053 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 22:33:23,054 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 22:33:23,084 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:23,092 INFO L263 TraceCheckSpWp]: Trace formula consists of 40 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 22:33:23,093 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:23,106 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 22:33:23,160 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:23,160 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:23,377 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:23,377 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 22:33:23,377 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [721012084] [2021-12-18 22:33:23,377 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [721012084] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:23,377 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 22:33:23,377 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [3, 3] total 5 [2021-12-18 22:33:23,378 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [598554719] [2021-12-18 22:33:23,378 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:23,378 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-12-18 22:33:23,378 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 22:33:23,378 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-12-18 22:33:23,378 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:33:23,378 INFO L87 Difference]: Start difference. First operand 13 states and 14 transitions. Second operand has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 22:33:23,422 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:23,422 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2021-12-18 22:33:23,423 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-12-18 22:33:23,423 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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) Word has length 7 [2021-12-18 22:33:23,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:23,424 INFO L225 Difference]: With dead ends: 22 [2021-12-18 22:33:23,424 INFO L226 Difference]: Without dead ends: 22 [2021-12-18 22:33:23,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-12-18 22:33:23,424 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 12 mSDsluCounter, 12 mSDsCounter, 0 mSdLazyCounter, 19 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 12 SdHoareTripleChecker+Valid, 20 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 19 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:23,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [12 Valid, 20 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 19 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-12-18 22:33:23,425 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2021-12-18 22:33:23,426 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 15. [2021-12-18 22:33:23,426 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 15 states, 13 states have (on average 1.2307692307692308) internal successors, (16), 14 states have internal predecessors, (16), 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 22:33:23,426 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 15 states to 15 states and 16 transitions. [2021-12-18 22:33:23,427 INFO L78 Accepts]: Start accepts. Automaton has 15 states and 16 transitions. Word has length 7 [2021-12-18 22:33:23,427 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:23,427 INFO L470 AbstractCegarLoop]: Abstraction has 15 states and 16 transitions. [2021-12-18 22:33:23,427 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 2.6) internal successors, (13), 6 states have internal predecessors, (13), 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 22:33:23,427 INFO L276 IsEmpty]: Start isEmpty. Operand 15 states and 16 transitions. [2021-12-18 22:33:23,427 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 22:33:23,427 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:23,427 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 1, 1, 1, 1, 1, 1] [2021-12-18 22:33:23,435 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 22:33:23,633 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 22:33:23,633 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:23,634 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:23,635 INFO L85 PathProgramCache]: Analyzing trace with hash -806218973, now seen corresponding path program 1 times [2021-12-18 22:33:23,635 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:23,636 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [458403872] [2021-12-18 22:33:23,636 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-12-18 22:33:23,636 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:23,636 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:23,637 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 22:33:23,638 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 22:33:23,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-12-18 22:33:23,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 51 conjuncts, 10 conjunts are in the unsatisfiable core [2021-12-18 22:33:23,669 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-12-18 22:33:23,745 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-12-18 22:33:23,745 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 4 select indices, 4 select index equivalence classes, 6 disjoint index pairs (out of 6 index pairs), introduced 4 new quantified variables, introduced 6 case distinctions, treesize of input 33 treesize of output 13 [2021-12-18 22:33:23,759 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:23,759 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-12-18 22:33:23,871 INFO L134 CoverageAnalysis]: Checked inductivity of 3 backedges. 0 proven. 3 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-12-18 22:33:23,872 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-12-18 22:33:23,872 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [458403872] [2021-12-18 22:33:23,872 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [458403872] provided 0 perfect and 2 imperfect interpolant sequences [2021-12-18 22:33:23,872 INFO L186 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2021-12-18 22:33:23,872 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2021-12-18 22:33:23,872 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1050406350] [2021-12-18 22:33:23,872 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2021-12-18 22:33:23,873 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-12-18 22:33:23,873 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-12-18 22:33:23,873 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-12-18 22:33:23,873 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=40, Unknown=0, NotChecked=0, Total=56 [2021-12-18 22:33:23,873 INFO L87 Difference]: Start difference. First operand 15 states and 16 transitions. Second operand has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 22:33:23,960 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-12-18 22:33:23,960 INFO L93 Difference]: Finished difference Result 16 states and 17 transitions. [2021-12-18 22:33:23,960 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-12-18 22:33:23,960 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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) Word has length 10 [2021-12-18 22:33:23,961 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-12-18 22:33:23,961 INFO L225 Difference]: With dead ends: 16 [2021-12-18 22:33:23,961 INFO L226 Difference]: Without dead ends: 16 [2021-12-18 22:33:23,961 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=34, Invalid=76, Unknown=0, NotChecked=0, Total=110 [2021-12-18 22:33:23,962 INFO L933 BasicCegarLoop]: 8 mSDtfsCounter, 3 mSDsluCounter, 16 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 3 SdHoareTripleChecker+Valid, 24 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 2 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-12-18 22:33:23,962 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [3 Valid, 24 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 23 Invalid, 0 Unknown, 2 Unchecked, 0.0s Time] [2021-12-18 22:33:23,962 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16 states. [2021-12-18 22:33:23,963 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16 to 16. [2021-12-18 22:33:23,963 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 16 states, 14 states have (on average 1.2142857142857142) internal successors, (17), 15 states have internal predecessors, (17), 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 22:33:23,963 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 16 states to 16 states and 17 transitions. [2021-12-18 22:33:23,963 INFO L78 Accepts]: Start accepts. Automaton has 16 states and 17 transitions. Word has length 10 [2021-12-18 22:33:23,964 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-12-18 22:33:23,964 INFO L470 AbstractCegarLoop]: Abstraction has 16 states and 17 transitions. [2021-12-18 22:33:23,964 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.125) internal successors, (17), 8 states have internal predecessors, (17), 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 22:33:23,964 INFO L276 IsEmpty]: Start isEmpty. Operand 16 states and 17 transitions. [2021-12-18 22:33:23,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2021-12-18 22:33:23,964 INFO L506 BasicCegarLoop]: Found error trace [2021-12-18 22:33:23,964 INFO L514 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1] [2021-12-18 22:33:23,985 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 22:33:24,167 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 22:33:24,168 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATION === [ULTIMATE.startErr0REQUIRES_VIOLATION, ULTIMATE.startErr1REQUIRES_VIOLATION, ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK] === [2021-12-18 22:33:24,168 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-12-18 22:33:24,168 INFO L85 PathProgramCache]: Analyzing trace with hash -806217498, now seen corresponding path program 2 times [2021-12-18 22:33:24,168 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-12-18 22:33:24,168 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1119466228] [2021-12-18 22:33:24,168 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-12-18 22:33:24,169 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-12-18 22:33:24,169 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-12-18 22:33:24,169 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 22:33:24,171 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 22:33:24,244 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-12-18 22:33:24,245 INFO L229 tOrderPrioritization]: Conjunction of SSA is sat [2021-12-18 22:33:24,245 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-12-18 22:33:24,266 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-12-18 22:33:24,298 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-12-18 22:33:24,299 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-12-18 22:33:24,299 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATION (2 of 3 remaining) [2021-12-18 22:33:24,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATION (1 of 3 remaining) [2021-12-18 22:33:24,301 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2ASSERT_VIOLATIONMEMORY_LEAK (0 of 3 remaining) [2021-12-18 22:33:24,333 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 22:33:24,502 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 22:33:24,504 INFO L732 BasicCegarLoop]: Path program histogram: [2, 1, 1, 1, 1] [2021-12-18 22:33:24,507 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-12-18 22:33:24,521 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 18.12 10:33:24 BoogieIcfgContainer [2021-12-18 22:33:24,522 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-12-18 22:33:24,522 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-12-18 22:33:24,522 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-12-18 22:33:24,522 INFO L275 PluginConnector]: Witness Printer initialized [2021-12-18 22:33:24,522 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 18.12 10:33:21" (3/4) ... [2021-12-18 22:33:24,524 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2021-12-18 22:33:24,544 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2021-12-18 22:33:24,544 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-12-18 22:33:24,545 INFO L158 Benchmark]: Toolchain (without parser) took 3253.30ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 35.4MB in the beginning and 29.3MB in the end (delta: 6.1MB). Peak memory consumption was 17.9MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,545 INFO L158 Benchmark]: CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-12-18 22:33:24,545 INFO L158 Benchmark]: CACSL2BoogieTranslator took 148.31ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 24.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,545 INFO L158 Benchmark]: Boogie Procedure Inliner took 53.56ms. Allocated memory is still 56.6MB. Free memory was 24.9MB in the beginning and 40.0MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,545 INFO L158 Benchmark]: Boogie Preprocessor took 15.16ms. Allocated memory is still 56.6MB. Free memory was 40.0MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,545 INFO L158 Benchmark]: RCFGBuilder took 244.38ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 29.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,546 INFO L158 Benchmark]: TraceAbstraction took 2763.29ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.8MB in the beginning and 31.3MB in the end (delta: -2.5MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,546 INFO L158 Benchmark]: Witness Printer took 22.29ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 29.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-12-18 22:33:24,547 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.21ms. Allocated memory is still 56.6MB. Free memory was 38.9MB in the beginning and 38.8MB in the end (delta: 42.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 148.31ms. Allocated memory is still 56.6MB. Free memory was 35.3MB in the beginning and 24.9MB in the end (delta: 10.4MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 53.56ms. Allocated memory is still 56.6MB. Free memory was 24.9MB in the beginning and 40.0MB in the end (delta: -15.0MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. * Boogie Preprocessor took 15.16ms. Allocated memory is still 56.6MB. Free memory was 40.0MB in the beginning and 38.7MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 244.38ms. Allocated memory is still 56.6MB. Free memory was 38.7MB in the beginning and 29.3MB in the end (delta: 9.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * TraceAbstraction took 2763.29ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.8MB in the beginning and 31.3MB in the end (delta: -2.5MB). Peak memory consumption was 8.6MB. Max. memory is 16.1GB. * Witness Printer took 22.29ms. Allocated memory is still 69.2MB. Free memory was 31.3MB in the beginning and 29.3MB in the end (delta: 2.0MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - CounterExampleResult [Line: 4]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L13] char numbers[] = {0,1,2,3,4,5,6,7,8,9}; [L15] CALL areNatural((int*) numbers) [L2] int i = 0; VAL [i=0, numbers={-2147483648:0}, numbers={-2147483648:0}] [L3] COND TRUE i < 10 VAL [i=0, numbers={-2147483648:0}, numbers={-2147483648:0}] [L4] EXPR numbers[i] VAL [i=0, numbers={-2147483648:0}, numbers={-2147483648:0}, numbers[i]=50462976] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=1, numbers={-2147483648:0}, numbers={-2147483648:0}] [L3] COND TRUE i < 10 VAL [i=1, numbers={-2147483648:0}, numbers={-2147483648:0}] [L4] EXPR numbers[i] VAL [i=1, numbers={-2147483648:0}, numbers={-2147483648:0}, numbers[i]=117835012] [L4] COND FALSE !(numbers[i] <= 0) [L7] i++ VAL [i=2, numbers={-2147483648:0}, numbers={-2147483648:0}] [L3] COND TRUE i < 10 VAL [i=2, numbers={-2147483648:0}, numbers={-2147483648:0}] [L4] numbers[i] - UnprovableResult [Line: 4]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 12]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 1 procedures, 13 locations, 3 error locations. Started 1 CEGAR loops. OverallTime: 2.7s, OverallIterations: 6, TraceHistogramMax: 3, PathProgramHistogramMax: 2, EmptinessCheckTime: 0.0s, AutomataDifference: 0.3s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 26 SdHoareTripleChecker+Valid, 0.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 26 mSDsluCounter, 87 SdHoareTripleChecker+Invalid, 0.1s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 7 IncrementalHoareTripleChecker+Unchecked, 45 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 63 IncrementalHoareTripleChecker+Invalid, 75 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 42 mSDtfsCounter, 63 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 46 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.3s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=16occurred in iteration=5, InterpolantAutomatonStates: 21, 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, 5 MinimizatonAttempts, 11 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.7s InterpolantComputationTime, 42 NumberOfCodeBlocks, 42 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 42 ConstructedInterpolants, 2 QuantifiedInterpolants, 595 SizeOfPredicates, 27 NumberOfNonLiveVariables, 198 ConjunctsInSsa, 43 ConjunctsInUnsatCore, 7 InterpolantComputations, 3 PerfectInterpolantSequences, 0/10 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2021-12-18 22:33:24,570 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Writing human readable error path to file UltimateCounterExample.errorpath Result: FALSE(valid-deref)