./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 6c24879c 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/array-memsafety/knapsack_alloca_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 18:22:04,249 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:22:04,252 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:22:04,279 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:22:04,280 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:22:04,281 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:22:04,282 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:22:04,286 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:22:04,287 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:22:04,290 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:22:04,291 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:22:04,293 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:22:04,293 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:22:04,295 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:22:04,296 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:22:04,298 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:22:04,299 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:22:04,300 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:22:04,301 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:22:04,305 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:22:04,306 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:22:04,307 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:22:04,308 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:22:04,308 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:22:04,310 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:22:04,314 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:22:04,315 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:22:04,316 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:22:04,316 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:22:04,317 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:22:04,317 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:22:04,318 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:22:04,319 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:22:04,319 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:22:04,320 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:22:04,321 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:22:04,321 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:22:04,321 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:22:04,322 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:22:04,322 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:22:04,322 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:22:04,324 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:22:04,325 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-12 18:22:04,351 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:22:04,352 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:22:04,352 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:22:04,352 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:22:04,353 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:22:04,353 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:22:04,353 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:22:04,353 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:22:04,354 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:22:04,354 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:22:04,354 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:22:04,355 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:22:04,356 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:22:04,356 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:22:04,356 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:22:04,356 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:22:04,356 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:22:04,356 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:22:04,357 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:22:04,357 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:22:04,357 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:22:04,357 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:22:04,357 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:22:04,357 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-12 18:22:04,358 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-12 18:22:04,358 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2022-07-12 18:22:04,560 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:22:04,578 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:22:04,580 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:22:04,580 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:22:04,581 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:22:04,582 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-12 18:22:04,645 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800afef97/83d1fbd619404291a876aac66ccd0f7c/FLAG03830ce9a [2022-07-12 18:22:05,078 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:22:05,079 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-12 18:22:05,094 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800afef97/83d1fbd619404291a876aac66ccd0f7c/FLAG03830ce9a [2022-07-12 18:22:05,106 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/800afef97/83d1fbd619404291a876aac66ccd0f7c [2022-07-12 18:22:05,108 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:22:05,109 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:22:05,111 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:22:05,111 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:22:05,114 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:22:05,114 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:22:05" (1/1) ... [2022-07-12 18:22:05,115 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@64c9dc1e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:05, skipping insertion in model container [2022-07-12 18:22:05,115 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:22:05" (1/1) ... [2022-07-12 18:22:05,120 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:22:05,155 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:22:05,404 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:22:05,410 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-07-12 18:22:05,412 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@3b5fcff7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:05, skipping insertion in model container [2022-07-12 18:22:05,412 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:22:05,412 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-12 18:22:05,413 INFO L158 Benchmark]: Toolchain (without parser) took 303.72ms. Allocated memory is still 115.3MB. Free memory was 81.4MB in the beginning and 87.7MB in the end (delta: -6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 18:22:05,414 INFO L158 Benchmark]: CDTParser took 0.14ms. Allocated memory is still 81.8MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:22:05,415 INFO L158 Benchmark]: CACSL2BoogieTranslator took 300.74ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 87.7MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-07-12 18:22:05,416 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 81.8MB. Free memory is still 45.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 300.74ms. Allocated memory is still 115.3MB. Free memory was 81.2MB in the beginning and 87.7MB in the end (delta: -6.5MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 535]: Unsupported Syntax Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 --- Real Ultimate output --- This is Ultimate 0.2.2-?-6c24879 [2022-07-12 18:22:06,888 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-12 18:22:06,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-12 18:22:06,922 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-12 18:22:06,922 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-12 18:22:06,924 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-12 18:22:06,927 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-12 18:22:06,929 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-12 18:22:06,930 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-12 18:22:06,956 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-12 18:22:06,957 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-12 18:22:06,958 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-12 18:22:06,959 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-12 18:22:06,960 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-12 18:22:06,961 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-12 18:22:06,965 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-12 18:22:06,966 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-12 18:22:06,967 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-12 18:22:06,968 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-12 18:22:06,972 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-12 18:22:06,973 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-12 18:22:06,974 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-12 18:22:06,975 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-12 18:22:06,976 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-12 18:22:06,977 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-12 18:22:06,981 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-12 18:22:06,981 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-12 18:22:06,981 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-12 18:22:06,982 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-12 18:22:06,982 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-12 18:22:06,983 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-12 18:22:06,983 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-12 18:22:06,984 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-12 18:22:06,985 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-12 18:22:06,986 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-12 18:22:06,986 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-12 18:22:06,987 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-12 18:22:06,987 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-12 18:22:06,987 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-12 18:22:06,987 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-12 18:22:06,988 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-12 18:22:06,989 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-12 18:22:06,995 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-12 18:22:07,020 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-12 18:22:07,021 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-12 18:22:07,021 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-12 18:22:07,022 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-12 18:22:07,022 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-12 18:22:07,022 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-12 18:22:07,023 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-12 18:22:07,023 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-12 18:22:07,023 INFO L138 SettingsManager]: * Use SBE=true [2022-07-12 18:22:07,024 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-12 18:22:07,024 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-12 18:22:07,024 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-12 18:22:07,024 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-12 18:22:07,024 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-12 18:22:07,025 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-12 18:22:07,026 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-12 18:22:07,026 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-12 18:22:07,026 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-12 18:22:07,026 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-12 18:22:07,026 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-12 18:22:07,026 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-12 18:22:07,027 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-12 18:22:07,027 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:22:07,027 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-12 18:22:07,027 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-12 18:22:07,027 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-12 18:22:07,027 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-12 18:22:07,028 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-12 18:22:07,028 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> e4298ca4b283086df2e0e2f17b814348cf7ca285d4c19f0d8a4923f1c5d9a834 [2022-07-12 18:22:07,296 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-12 18:22:07,310 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-12 18:22:07,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-12 18:22:07,313 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-12 18:22:07,313 INFO L275 PluginConnector]: CDTParser initialized [2022-07-12 18:22:07,314 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-12 18:22:07,360 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12377affe/94fe1c916efb4458adfe375d03c2d61d/FLAG180516869 [2022-07-12 18:22:07,797 INFO L306 CDTParser]: Found 1 translation units. [2022-07-12 18:22:07,803 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/array-memsafety/knapsack_alloca_unsafe.i [2022-07-12 18:22:07,812 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12377affe/94fe1c916efb4458adfe375d03c2d61d/FLAG180516869 [2022-07-12 18:22:07,824 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/12377affe/94fe1c916efb4458adfe375d03c2d61d [2022-07-12 18:22:07,826 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-12 18:22:07,827 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-12 18:22:07,829 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-12 18:22:07,829 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-12 18:22:07,831 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-12 18:22:07,832 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:22:07" (1/1) ... [2022-07-12 18:22:07,832 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@21dac4bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:07, skipping insertion in model container [2022-07-12 18:22:07,833 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 12.07 06:22:07" (1/1) ... [2022-07-12 18:22:07,838 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-12 18:22:07,873 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:22:08,149 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:22:08,157 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-12 18:22:08,165 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-12 18:22:08,197 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:22:08,203 INFO L203 MainTranslator]: Completed pre-run [2022-07-12 18:22:08,231 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-12 18:22:08,258 INFO L208 MainTranslator]: Completed translation [2022-07-12 18:22:08,258 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08 WrapperNode [2022-07-12 18:22:08,259 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-12 18:22:08,260 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-12 18:22:08,260 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-12 18:22:08,260 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-12 18:22:08,265 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,285 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,303 INFO L137 Inliner]: procedures = 117, calls = 28, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 112 [2022-07-12 18:22:08,304 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-12 18:22:08,304 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-12 18:22:08,304 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-12 18:22:08,304 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-12 18:22:08,310 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,310 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,312 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,312 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,318 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,321 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,329 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,336 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-12 18:22:08,337 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-12 18:22:08,338 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-12 18:22:08,338 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-12 18:22:08,338 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (1/1) ... [2022-07-12 18:22:08,344 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-12 18:22:08,355 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-12 18:22:08,364 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-07-12 18:22:08,381 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-07-12 18:22:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-07-12 18:22:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2022-07-12 18:22:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-12 18:22:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-07-12 18:22:08,401 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-12 18:22:08,402 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-12 18:22:08,485 INFO L234 CfgBuilder]: Building ICFG [2022-07-12 18:22:08,486 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-12 18:22:08,891 INFO L275 CfgBuilder]: Performing block encoding [2022-07-12 18:22:08,895 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-12 18:22:08,896 INFO L299 CfgBuilder]: Removed 4 assume(true) statements. [2022-07-12 18:22:08,898 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:22:08 BoogieIcfgContainer [2022-07-12 18:22:08,898 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-12 18:22:08,904 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-12 18:22:08,904 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-12 18:22:08,906 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-12 18:22:08,906 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 12.07 06:22:07" (1/3) ... [2022-07-12 18:22:08,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6460dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:22:08, skipping insertion in model container [2022-07-12 18:22:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 12.07 06:22:08" (2/3) ... [2022-07-12 18:22:08,907 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@6460dc7f and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 12.07 06:22:08, skipping insertion in model container [2022-07-12 18:22:08,907 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:22:08" (3/3) ... [2022-07-12 18:22:08,908 INFO L111 eAbstractionObserver]: Analyzing ICFG knapsack_alloca_unsafe.i [2022-07-12 18:22:08,918 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-12 18:22:08,919 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 27 error locations. [2022-07-12 18:22:08,953 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-12 18:22:08,958 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@6dfba127, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@3555a211 [2022-07-12 18:22:08,958 INFO L358 AbstractCegarLoop]: Starting to check reachability of 27 error locations. [2022-07-12 18:22:08,961 INFO L276 IsEmpty]: Start isEmpty. Operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 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) [2022-07-12 18:22:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 18:22:08,965 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:22:08,965 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:22:08,966 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-12 18:22:08,969 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:22:08,969 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029096, now seen corresponding path program 1 times [2022-07-12 18:22:08,978 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:22:08,979 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1898284652] [2022-07-12 18:22:08,980 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:22:08,980 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:22:08,980 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:22:08,982 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:22:08,983 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-12 18:22:09,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:22:09,082 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 15 conjunts are in the unsatisfiable core [2022-07-12 18:22:09,086 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:22:09,217 INFO L356 Elim1Store]: treesize reduction 94, result has 19.7 percent of original size [2022-07-12 18:22:09,218 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 6 case distinctions, treesize of input 39 treesize of output 47 [2022-07-12 18:22:09,333 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:22:09,334 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:22:09,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:22:09,335 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1898284652] [2022-07-12 18:22:09,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1898284652] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:22:09,335 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:22:09,335 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-07-12 18:22:09,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2010768030] [2022-07-12 18:22:09,337 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:22:09,340 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2022-07-12 18:22:09,341 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:22:09,356 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2022-07-12 18:22:09,357 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:22:09,358 INFO L87 Difference]: Start difference. First operand has 65 states, 37 states have (on average 2.054054054054054) internal successors, (76), 64 states have internal predecessors, (76), 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 3.5) internal successors, (7), 3 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) [2022-07-12 18:22:09,372 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:22:09,372 INFO L93 Difference]: Finished difference Result 72 states and 83 transitions. [2022-07-12 18:22:09,373 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2022-07-12 18:22:09,374 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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 [2022-07-12 18:22:09,374 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:22:09,378 INFO L225 Difference]: With dead ends: 72 [2022-07-12 18:22:09,379 INFO L226 Difference]: Without dead ends: 70 [2022-07-12 18:22:09,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 6 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2022-07-12 18:22:09,382 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 5 mSDsluCounter, 38 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 5 SdHoareTripleChecker+Valid, 105 SdHoareTripleChecker+Invalid, 33 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 33 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-07-12 18:22:09,382 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [5 Valid, 105 Invalid, 33 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 33 Unchecked, 0.0s Time] [2022-07-12 18:22:09,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70 states. [2022-07-12 18:22:09,400 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70 to 65. [2022-07-12 18:22:09,401 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 38 states have (on average 1.9473684210526316) internal successors, (74), 64 states have internal predecessors, (74), 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) [2022-07-12 18:22:09,403 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 74 transitions. [2022-07-12 18:22:09,403 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 74 transitions. Word has length 7 [2022-07-12 18:22:09,404 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:22:09,404 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 74 transitions. [2022-07-12 18:22:09,404 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 3.5) internal successors, (7), 3 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) [2022-07-12 18:22:09,404 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 74 transitions. [2022-07-12 18:22:09,404 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 18:22:09,404 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:22:09,404 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:22:09,411 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-12 18:22:09,605 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:22:09,605 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-12 18:22:09,606 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:22:09,606 INFO L85 PathProgramCache]: Analyzing trace with hash 1805029097, now seen corresponding path program 1 times [2022-07-12 18:22:09,606 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:22:09,606 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1593035317] [2022-07-12 18:22:09,606 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:22:09,607 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:22:09,607 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:22:09,608 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:22:09,609 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-12 18:22:09,672 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-12 18:22:09,675 INFO L263 TraceCheckSpWp]: Trace formula consists of 55 conjuncts, 17 conjunts are in the unsatisfiable core [2022-07-12 18:22:09,677 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-12 18:22:09,726 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:22:09,727 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:22:09,728 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-12 18:22:09,782 INFO L356 Elim1Store]: treesize reduction 34, result has 41.4 percent of original size [2022-07-12 18:22:09,783 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 3 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 3 case distinctions, treesize of input 15 treesize of output 29 [2022-07-12 18:22:09,799 INFO L356 Elim1Store]: treesize reduction 7, result has 12.5 percent of original size [2022-07-12 18:22:09,799 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 24 treesize of output 20 [2022-07-12 18:22:09,849 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-12 18:22:09,850 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-12 18:22:09,850 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-12 18:22:09,850 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1593035317] [2022-07-12 18:22:09,850 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1593035317] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-12 18:22:09,850 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-12 18:22:09,851 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-07-12 18:22:09,851 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1586160935] [2022-07-12 18:22:09,851 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-12 18:22:09,852 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-07-12 18:22:09,852 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-12 18:22:09,852 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-07-12 18:22:09,853 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=8, Invalid=12, Unknown=0, NotChecked=0, Total=20 [2022-07-12 18:22:09,853 INFO L87 Difference]: Start difference. First operand 65 states and 74 transitions. Second operand has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-07-12 18:22:10,312 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-12 18:22:10,312 INFO L93 Difference]: Finished difference Result 200 states and 220 transitions. [2022-07-12 18:22:10,313 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-07-12 18:22:10,313 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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 [2022-07-12 18:22:10,314 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-12 18:22:10,315 INFO L225 Difference]: With dead ends: 200 [2022-07-12 18:22:10,315 INFO L226 Difference]: Without dead ends: 200 [2022-07-12 18:22:10,316 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 8 GetRequests, 3 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=18, Invalid=24, Unknown=0, NotChecked=0, Total=42 [2022-07-12 18:22:10,316 INFO L413 NwaCegarLoop]: 114 mSDtfsCounter, 156 mSDsluCounter, 235 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 156 SdHoareTripleChecker+Valid, 349 SdHoareTripleChecker+Invalid, 104 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-07-12 18:22:10,317 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [156 Valid, 349 Invalid, 104 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-07-12 18:22:10,318 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 200 states. [2022-07-12 18:22:10,323 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 200 to 69. [2022-07-12 18:22:10,323 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 42 states have (on average 1.880952380952381) internal successors, (79), 68 states have internal predecessors, (79), 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) [2022-07-12 18:22:10,324 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 79 transitions. [2022-07-12 18:22:10,324 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 79 transitions. Word has length 7 [2022-07-12 18:22:10,324 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-12 18:22:10,325 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 79 transitions. [2022-07-12 18:22:10,325 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 1.75) internal successors, (7), 5 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) [2022-07-12 18:22:10,325 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 79 transitions. [2022-07-12 18:22:10,325 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 8 [2022-07-12 18:22:10,325 INFO L187 NwaCegarLoop]: Found error trace [2022-07-12 18:22:10,325 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1] [2022-07-12 18:22:10,334 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-12 18:22:10,532 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:22:10,532 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 24 more)] === [2022-07-12 18:22:10,533 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-12 18:22:10,533 INFO L85 PathProgramCache]: Analyzing trace with hash 1806876139, now seen corresponding path program 1 times [2022-07-12 18:22:10,533 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-12 18:22:10,534 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214530782] [2022-07-12 18:22:10,534 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-12 18:22:10,534 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-12 18:22:10,534 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-12 18:22:10,535 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-12 18:22:10,537 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-07-12 18:22:10,590 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:22:10,591 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-12 18:22:10,614 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-12 18:22:10,630 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-12 18:22:10,630 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-12 18:22:10,631 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (26 of 27 remaining) [2022-07-12 18:22:10,632 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (25 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (24 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (23 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (22 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (21 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (20 of 27 remaining) [2022-07-12 18:22:10,633 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (19 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8REQUIRES_VIOLATIONMEMORY_DEREFERENCE (18 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9REQUIRES_VIOLATIONMEMORY_DEREFERENCE (17 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10REQUIRES_VIOLATIONMEMORY_DEREFERENCE (16 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE (15 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE (14 of 27 remaining) [2022-07-12 18:22:10,634 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr13REQUIRES_VIOLATIONMEMORY_DEREFERENCE (13 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr14REQUIRES_VIOLATIONMEMORY_DEREFERENCE (12 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr15REQUIRES_VIOLATIONMEMORY_DEREFERENCE (11 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr16REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr17REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr18REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 27 remaining) [2022-07-12 18:22:10,635 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr19REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr20REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr21REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr22REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr23REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr24REQUIRES_VIOLATIONMEMORY_DEREFERENCE (2 of 27 remaining) [2022-07-12 18:22:10,636 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr25REQUIRES_VIOLATIONMEMORY_DEREFERENCE (1 of 27 remaining) [2022-07-12 18:22:10,637 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr26ASSERT_VIOLATIONMEMORY_LEAK (0 of 27 remaining) [2022-07-12 18:22:10,645 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-07-12 18:22:10,837 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-12 18:22:10,840 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1] [2022-07-12 18:22:10,842 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-12 18:22:10,860 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 12.07 06:22:10 BoogieIcfgContainer [2022-07-12 18:22:10,860 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-12 18:22:10,861 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-12 18:22:10,861 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-12 18:22:10,861 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-12 18:22:10,862 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 12.07 06:22:08" (3/4) ... [2022-07-12 18:22:10,867 INFO L131 WitnessPrinter]: Generating witness for reachability counterexample [2022-07-12 18:22:10,887 INFO L141 WitnessManager]: Wrote witness to /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/witness.graphml [2022-07-12 18:22:10,887 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-12 18:22:10,888 INFO L158 Benchmark]: Toolchain (without parser) took 3060.89ms. Allocated memory was 54.5MB in the beginning and 88.1MB in the end (delta: 33.6MB). Free memory was 30.9MB in the beginning and 66.8MB in the end (delta: -35.8MB). Peak memory consumption was 27.5MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,888 INFO L158 Benchmark]: CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-12 18:22:10,888 INFO L158 Benchmark]: CACSL2BoogieTranslator took 430.27ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.7MB in the beginning and 45.9MB in the end (delta: -15.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,889 INFO L158 Benchmark]: Boogie Procedure Inliner took 44.10ms. Allocated memory is still 73.4MB. Free memory was 45.7MB in the beginning and 43.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,889 INFO L158 Benchmark]: Boogie Preprocessor took 32.48ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 41.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,889 INFO L158 Benchmark]: RCFGBuilder took 560.82ms. Allocated memory is still 73.4MB. Free memory was 41.8MB in the beginning and 35.7MB in the end (delta: 6.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,889 INFO L158 Benchmark]: TraceAbstraction took 1957.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 54.3MB in the beginning and 38.9MB in the end (delta: 15.4MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,890 INFO L158 Benchmark]: Witness Printer took 26.49ms. Allocated memory is still 88.1MB. Free memory was 38.9MB in the beginning and 66.8MB in the end (delta: -27.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-12 18:22:10,892 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.18ms. Allocated memory is still 54.5MB. Free memory was 35.7MB in the beginning and 35.6MB in the end (delta: 46.3kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 430.27ms. Allocated memory was 54.5MB in the beginning and 73.4MB in the end (delta: 18.9MB). Free memory was 30.7MB in the beginning and 45.9MB in the end (delta: -15.2MB). Peak memory consumption was 5.9MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 44.10ms. Allocated memory is still 73.4MB. Free memory was 45.7MB in the beginning and 43.7MB in the end (delta: 2.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 32.48ms. Allocated memory is still 73.4MB. Free memory was 43.7MB in the beginning and 41.8MB in the end (delta: 1.8MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 560.82ms. Allocated memory is still 73.4MB. Free memory was 41.8MB in the beginning and 35.7MB in the end (delta: 6.1MB). Peak memory consumption was 8.1MB. Max. memory is 16.1GB. * TraceAbstraction took 1957.00ms. Allocated memory was 73.4MB in the beginning and 88.1MB in the end (delta: 14.7MB). Free memory was 54.3MB in the beginning and 38.9MB in the end (delta: 15.4MB). Peak memory consumption was 28.4MB. Max. memory is 16.1GB. * Witness Printer took 26.49ms. Allocated memory is still 88.1MB. Free memory was 38.9MB in the beginning and 66.8MB in the end (delta: -27.8MB). 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: -1]: pointer dereference may fail pointer dereference may fail We found a FailurePath: [L527] int N = __VERIFIER_nondet_int(); [L528] int M = __VERIFIER_nondet_int(); [L529] COND FALSE !(N < 1) VAL [N=1073741824] [L532] COND TRUE M < 1 [L533] M = 1 VAL [M=1, N=1073741824] [L535] int *size = (int*) __builtin_alloca (N * sizeof(int)); [L536] int *val = (int*) __builtin_alloca (N * sizeof(int)); [L537] int *cost = (int*) __builtin_alloca (M * sizeof(int)); [L538] int *best = (int*) __builtin_alloca (M * sizeof(int)); [L540] int i = 0; VAL [__builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (M * sizeof(int))={11:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={11:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L540] COND TRUE i < N VAL [__builtin_alloca (M * sizeof(int))={5:0}, __builtin_alloca (M * sizeof(int))={11:0}, __builtin_alloca (N * sizeof(int))={7:0}, __builtin_alloca (N * sizeof(int))={3:0}, best={5:0}, cost={11:0}, i=0, M=1, N=1073741824, size={3:0}, val={7:0}] [L542] size[i] = __VERIFIER_nondet_int() - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: -1]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 526]: 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, 65 locations, 27 error locations. Started 1 CEGAR loops. OverallTime: 1.9s, OverallIterations: 3, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 161 SdHoareTripleChecker+Valid, 0.4s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 161 mSDsluCounter, 454 SdHoareTripleChecker+Invalid, 0.3s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 33 IncrementalHoareTripleChecker+Unchecked, 273 mSDsCounter, 5 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 99 IncrementalHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 5 mSolverCounterUnsat, 181 mSDtfsCounter, 99 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 14 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=69occurred in iteration=2, InterpolantAutomatonStates: 9, 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, 2 MinimizatonAttempts, 136 StatesRemovedByMinimization, 2 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.0s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 0.4s InterpolantComputationTime, 21 NumberOfCodeBlocks, 21 NumberOfCodeBlocksAsserted, 3 NumberOfCheckSat, 12 ConstructedInterpolants, 2 QuantifiedInterpolants, 116 SizeOfPredicates, 11 NumberOfNonLiveVariables, 110 ConjunctsInSsa, 32 ConjunctsInUnsatCore, 2 InterpolantComputations, 2 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate proved your program to be incorrect! [2022-07-12 18:22:10,919 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Ended with 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)