./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 791161d1 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/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 06:43:05,796 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 06:43:05,799 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 06:43:05,836 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 06:43:05,837 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 06:43:05,838 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 06:43:05,841 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 06:43:05,845 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 06:43:05,849 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 06:43:05,849 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 06:43:05,850 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 06:43:05,851 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 06:43:05,852 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 06:43:05,856 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 06:43:05,857 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 06:43:05,858 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 06:43:05,860 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 06:43:05,861 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 06:43:05,863 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 06:43:05,866 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 06:43:05,869 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 06:43:05,870 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 06:43:05,871 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 06:43:05,872 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 06:43:05,874 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 06:43:05,878 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 06:43:05,882 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 06:43:05,882 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 06:43:05,883 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 06:43:05,883 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 06:43:05,884 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 06:43:05,884 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 06:43:05,885 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 06:43:05,885 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 06:43:05,886 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 06:43:05,887 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 06:43:05,887 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 06:43:05,888 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 06:43:05,888 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 06:43:05,888 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 06:43:05,889 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 06:43:05,890 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 06:43:05,891 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-07-23 06:43:05,911 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 06:43:05,912 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 06:43:05,913 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 06:43:05,913 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 06:43:05,914 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 06:43:05,914 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 06:43:05,914 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 06:43:05,915 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 06:43:05,915 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 06:43:05,916 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 06:43:05,916 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 06:43:05,916 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 06:43:05,916 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 06:43:05,916 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 06:43:05,917 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 06:43:05,917 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 06:43:05,917 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 06:43:05,917 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 06:43:05,917 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 06:43:05,918 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 06:43:05,919 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 06:43:05,919 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 06:43:05,919 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 06:43:05,920 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 06:43:05,920 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 06:43:05,920 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:43:05,920 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 06:43:05,920 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 06:43:05,921 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-07-23 06:43:05,921 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-07-23 06:43:05,921 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2022-07-23 06:43:06,151 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 06:43:06,170 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 06:43:06,173 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 06:43:06,175 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 06:43:06,175 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 06:43:06,176 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-07-23 06:43:06,241 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b3bcb81/297ba823ab6c4cb8a14ff71d03a7febf/FLAG7b393280e [2022-07-23 06:43:06,622 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 06:43:06,623 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-07-23 06:43:06,634 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b3bcb81/297ba823ab6c4cb8a14ff71d03a7febf/FLAG7b393280e [2022-07-23 06:43:06,996 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/b2b3bcb81/297ba823ab6c4cb8a14ff71d03a7febf [2022-07-23 06:43:06,998 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 06:43:06,999 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 06:43:07,001 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 06:43:07,003 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 06:43:07,006 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 06:43:07,007 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:43:06" (1/1) ... [2022-07-23 06:43:07,008 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2f0619e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:07, skipping insertion in model container [2022-07-23 06:43:07,008 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:43:06" (1/1) ... [2022-07-23 06:43:07,014 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 06:43:07,058 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:43:07,314 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:43:07,322 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) [2022-07-23 06:43:07,323 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@2572f9a4 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:07, skipping insertion in model container [2022-07-23 06:43:07,323 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 06:43:07,323 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-07-23 06:43:07,325 INFO L158 Benchmark]: Toolchain (without parser) took 325.14ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.2MB in the beginning and 81.6MB in the end (delta: -29.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 06:43:07,326 INFO L158 Benchmark]: CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 06:43:07,327 INFO L158 Benchmark]: CACSL2BoogieTranslator took 321.96ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 81.6MB in the end (delta: -29.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. [2022-07-23 06:43:07,328 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.17ms. Allocated memory is still 88.1MB. Free memory was 58.2MB in the beginning and 58.2MB in the end (delta: 26.7kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 321.96ms. Allocated memory was 88.1MB in the beginning and 107.0MB in the end (delta: 18.9MB). Free memory was 52.0MB in the beginning and 81.6MB in the end (delta: -29.6MB). Peak memory consumption was 10.5MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 562]: 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/list-ext3-properties/sll_shallow_copy-2.i -s /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 --- Real Ultimate output --- This is Ultimate 0.2.2-?-791161d [2022-07-23 06:43:09,139 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-07-23 06:43:09,142 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-07-23 06:43:09,187 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-07-23 06:43:09,188 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-07-23 06:43:09,189 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-07-23 06:43:09,193 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-07-23 06:43:09,195 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-07-23 06:43:09,198 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-07-23 06:43:09,202 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-07-23 06:43:09,203 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-07-23 06:43:09,205 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-07-23 06:43:09,206 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-07-23 06:43:09,208 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-07-23 06:43:09,209 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-07-23 06:43:09,214 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-07-23 06:43:09,215 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-07-23 06:43:09,216 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-07-23 06:43:09,217 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-07-23 06:43:09,223 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-07-23 06:43:09,224 INFO L181 SettingsManager]: Resetting HornVerifier preferences to default values [2022-07-23 06:43:09,225 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-07-23 06:43:09,227 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-07-23 06:43:09,228 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-07-23 06:43:09,229 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-07-23 06:43:09,236 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-07-23 06:43:09,236 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-07-23 06:43:09,237 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-07-23 06:43:09,238 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-07-23 06:43:09,238 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-07-23 06:43:09,239 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-07-23 06:43:09,239 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-07-23 06:43:09,241 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-07-23 06:43:09,241 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-07-23 06:43:09,243 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-07-23 06:43:09,243 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-07-23 06:43:09,244 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-07-23 06:43:09,244 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-07-23 06:43:09,244 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-07-23 06:43:09,245 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-07-23 06:43:09,245 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-07-23 06:43:09,247 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-07-23 06:43:09,254 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-07-23 06:43:09,287 INFO L113 SettingsManager]: Loading preferences was successful [2022-07-23 06:43:09,288 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-07-23 06:43:09,288 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-07-23 06:43:09,288 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-07-23 06:43:09,289 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-07-23 06:43:09,290 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-07-23 06:43:09,290 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-07-23 06:43:09,291 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-07-23 06:43:09,291 INFO L138 SettingsManager]: * Use SBE=true [2022-07-23 06:43:09,292 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-07-23 06:43:09,292 INFO L138 SettingsManager]: * sizeof long=4 [2022-07-23 06:43:09,292 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-07-23 06:43:09,292 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-07-23 06:43:09,292 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-07-23 06:43:09,293 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-07-23 06:43:09,293 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-07-23 06:43:09,293 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-07-23 06:43:09,293 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-07-23 06:43:09,294 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-07-23 06:43:09,294 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-07-23 06:43:09,294 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-07-23 06:43:09,294 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-07-23 06:43:09,295 INFO L138 SettingsManager]: * sizeof long double=12 [2022-07-23 06:43:09,295 INFO L138 SettingsManager]: * Use constant arrays=true [2022-07-23 06:43:09,295 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-07-23 06:43:09,295 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-07-23 06:43:09,296 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-07-23 06:43:09,296 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:43:09,296 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-07-23 06:43:09,296 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-07-23 06:43:09,297 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-07-23 06:43:09,297 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-07-23 06:43:09,297 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-07-23 06:43:09,297 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 6b0035e4df062aac8021cee981905a3c98f2d4e312e33b913ded157af60b9640 [2022-07-23 06:43:09,662 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-07-23 06:43:09,689 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-07-23 06:43:09,692 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-07-23 06:43:09,693 INFO L271 PluginConnector]: Initializing CDTParser... [2022-07-23 06:43:09,693 INFO L275 PluginConnector]: CDTParser initialized [2022-07-23 06:43:09,695 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-07-23 06:43:09,755 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70169787c/6f746d50c1fc42b9a700588527fbfd45/FLAGc4591a855 [2022-07-23 06:43:10,265 INFO L306 CDTParser]: Found 1 translation units. [2022-07-23 06:43:10,268 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/list-ext3-properties/sll_shallow_copy-2.i [2022-07-23 06:43:10,280 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70169787c/6f746d50c1fc42b9a700588527fbfd45/FLAGc4591a855 [2022-07-23 06:43:10,587 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/70169787c/6f746d50c1fc42b9a700588527fbfd45 [2022-07-23 06:43:10,590 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-07-23 06:43:10,591 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-07-23 06:43:10,594 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-07-23 06:43:10,594 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-07-23 06:43:10,597 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-07-23 06:43:10,598 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:43:10" (1/1) ... [2022-07-23 06:43:10,599 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@101cfaeb and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:10, skipping insertion in model container [2022-07-23 06:43:10,599 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 23.07 06:43:10" (1/1) ... [2022-07-23 06:43:10,605 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-07-23 06:43:10,648 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:43:10,913 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:43:10,919 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-07-23 06:43:10,924 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-07-23 06:43:10,950 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:43:10,951 INFO L203 MainTranslator]: Completed pre-run [2022-07-23 06:43:11,003 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-07-23 06:43:11,030 INFO L208 MainTranslator]: Completed translation [2022-07-23 06:43:11,031 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11 WrapperNode [2022-07-23 06:43:11,031 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-07-23 06:43:11,032 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-07-23 06:43:11,033 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-07-23 06:43:11,033 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-07-23 06:43:11,040 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,053 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,068 INFO L137 Inliner]: procedures = 115, calls = 11, calls flagged for inlining = 3, calls inlined = 3, statements flattened = 33 [2022-07-23 06:43:11,069 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-07-23 06:43:11,070 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-07-23 06:43:11,070 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-07-23 06:43:11,070 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-07-23 06:43:11,076 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,077 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,079 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,080 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,086 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,088 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,089 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,092 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-07-23 06:43:11,093 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-07-23 06:43:11,093 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-07-23 06:43:11,093 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-07-23 06:43:11,094 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (1/1) ... [2022-07-23 06:43:11,100 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-07-23 06:43:11,111 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2022-07-23 06:43:11,125 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) [2022-07-23 06:43:11,149 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 [2022-07-23 06:43:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_node [2022-07-23 06:43:11,171 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_node [2022-07-23 06:43:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-07-23 06:43:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-07-23 06:43:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-07-23 06:43:11,171 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-07-23 06:43:11,172 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-07-23 06:43:11,172 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-07-23 06:43:11,261 INFO L234 CfgBuilder]: Building ICFG [2022-07-23 06:43:11,263 INFO L260 CfgBuilder]: Building CFG for each procedure with an implementation [2022-07-23 06:43:11,424 INFO L275 CfgBuilder]: Performing block encoding [2022-07-23 06:43:11,430 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-07-23 06:43:11,430 INFO L299 CfgBuilder]: Removed 0 assume(true) statements. [2022-07-23 06:43:11,432 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:43:11 BoogieIcfgContainer [2022-07-23 06:43:11,432 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-07-23 06:43:11,434 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-07-23 06:43:11,434 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-07-23 06:43:11,436 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-07-23 06:43:11,437 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 23.07 06:43:10" (1/3) ... [2022-07-23 06:43:11,437 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a0584a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:43:11, skipping insertion in model container [2022-07-23 06:43:11,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 23.07 06:43:11" (2/3) ... [2022-07-23 06:43:11,438 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@70a0584a and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 23.07 06:43:11, skipping insertion in model container [2022-07-23 06:43:11,438 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:43:11" (3/3) ... [2022-07-23 06:43:11,439 INFO L111 eAbstractionObserver]: Analyzing ICFG sll_shallow_copy-2.i [2022-07-23 06:43:11,452 INFO L201 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-07-23 06:43:11,464 INFO L160 ceAbstractionStarter]: Applying trace abstraction to program that has 12 error locations. [2022-07-23 06:43:11,530 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-07-23 06:43:11,542 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@3ca710d9, mLbeIndependenceSettings=de.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings@358e8cb6 [2022-07-23 06:43:11,543 INFO L358 AbstractCegarLoop]: Starting to check reachability of 12 error locations. [2022-07-23 06:43:11,549 INFO L276 IsEmpty]: Start isEmpty. Operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:11,556 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 06:43:11,557 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:11,557 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:11,558 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:11,567 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:11,568 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625018, now seen corresponding path program 1 times [2022-07-23 06:43:11,579 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:11,580 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [163114099] [2022-07-23 06:43:11,580 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:11,581 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:11,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:11,587 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) [2022-07-23 06:43:11,627 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-07-23 06:43:11,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:11,706 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 10 conjunts are in the unsatisfiable core [2022-07-23 06:43:11,711 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:11,790 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:11,970 INFO L356 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2022-07-23 06:43:11,971 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 17 [2022-07-23 06:43:11,995 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:43:11,995 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:43:12,236 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:43:12,237 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:43:12,237 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [163114099] [2022-07-23 06:43:12,238 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [163114099] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:43:12,238 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:43:12,238 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-07-23 06:43:12,240 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1218121486] [2022-07-23 06:43:12,240 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:43:12,244 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:43:12,244 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:43:12,278 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:43:12,279 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=55, Unknown=0, NotChecked=0, Total=72 [2022-07-23 06:43:12,281 INFO L87 Difference]: Start difference. First operand has 35 states, 19 states have (on average 1.6842105263157894) internal successors, (32), 31 states have internal predecessors, (32), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:43:12,444 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:43:12,444 INFO L93 Difference]: Finished difference Result 31 states and 32 transitions. [2022-07-23 06:43:12,446 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-07-23 06:43:12,447 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 16 [2022-07-23 06:43:12,447 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:43:12,451 INFO L225 Difference]: With dead ends: 31 [2022-07-23 06:43:12,451 INFO L226 Difference]: Without dead ends: 28 [2022-07-23 06:43:12,453 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 20 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2022-07-23 06:43:12,456 INFO L413 NwaCegarLoop]: 15 mSDtfsCounter, 15 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 90 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 67 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 90 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 27 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:43:12,457 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [15 Valid, 67 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 90 Invalid, 0 Unknown, 27 Unchecked, 0.1s Time] [2022-07-23 06:43:12,468 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 28 states. [2022-07-23 06:43:12,480 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 28 to 28. [2022-07-23 06:43:12,481 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 28 states, 17 states have (on average 1.411764705882353) internal successors, (24), 24 states have internal predecessors, (24), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:12,482 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 28 states to 28 states and 28 transitions. [2022-07-23 06:43:12,483 INFO L78 Accepts]: Start accepts. Automaton has 28 states and 28 transitions. Word has length 16 [2022-07-23 06:43:12,484 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:43:12,484 INFO L495 AbstractCegarLoop]: Abstraction has 28 states and 28 transitions. [2022-07-23 06:43:12,484 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.0) internal successors, (16), 7 states have internal predecessors, (16), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-07-23 06:43:12,484 INFO L276 IsEmpty]: Start isEmpty. Operand 28 states and 28 transitions. [2022-07-23 06:43:12,485 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-07-23 06:43:12,485 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:12,486 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:12,495 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2022-07-23 06:43:12,695 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:43:12,695 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:12,696 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:12,696 INFO L85 PathProgramCache]: Analyzing trace with hash -1794625017, now seen corresponding path program 1 times [2022-07-23 06:43:12,696 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:12,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1867555000] [2022-07-23 06:43:12,697 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:12,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:12,697 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:12,699 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) [2022-07-23 06:43:12,701 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-07-23 06:43:12,746 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:12,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 06:43:12,751 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:12,772 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:12,779 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:13,004 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:43:13,006 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 06:43:13,016 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 06:43:13,017 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 11 treesize of output 11 [2022-07-23 06:43:13,043 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:43:13,043 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:43:13,549 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:43:13,549 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1867555000] [2022-07-23 06:43:13,550 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1867555000] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:43:13,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1057693831] [2022-07-23 06:43:13,550 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:13,550 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-07-23 06:43:13,550 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2022-07-23 06:43:13,557 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-07-23 06:43:13,565 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Waiting until timeout for monitored process [2022-07-23 06:43:13,628 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:13,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 49 conjuncts, 18 conjunts are in the unsatisfiable core [2022-07-23 06:43:13,632 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:13,644 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:13,650 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:15,823 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-07-23 06:43:15,824 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-07-23 06:43:15,836 INFO L356 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2022-07-23 06:43:15,836 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 11 treesize of output 11 [2022-07-23 06:43:15,843 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:43:15,843 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:43:18,885 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1057693831] provided 0 perfect and 1 imperfect interpolant sequences [2022-07-23 06:43:18,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:43:18,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 8 [2022-07-23 06:43:18,887 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [920369866] [2022-07-23 06:43:18,887 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:43:18,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-07-23 06:43:18,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:43:18,888 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-07-23 06:43:18,888 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2022-07-23 06:43:18,888 INFO L87 Difference]: Start difference. First operand 28 states and 28 transitions. Second operand has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:19,061 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:43:19,061 INFO L93 Difference]: Finished difference Result 24 states and 24 transitions. [2022-07-23 06:43:19,062 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 06:43:19,062 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 16 [2022-07-23 06:43:19,062 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:43:19,063 INFO L225 Difference]: With dead ends: 24 [2022-07-23 06:43:19,063 INFO L226 Difference]: Without dead ends: 24 [2022-07-23 06:43:19,063 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 23 SyntacticMatches, 2 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 5.5s TimeCoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-07-23 06:43:19,064 INFO L413 NwaCegarLoop]: 9 mSDtfsCounter, 22 mSDsluCounter, 22 mSDsCounter, 0 mSdLazyCounter, 79 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 79 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 21 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:43:19,064 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 31 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 79 Invalid, 0 Unknown, 21 Unchecked, 0.1s Time] [2022-07-23 06:43:19,065 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24 states. [2022-07-23 06:43:19,067 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24 to 24. [2022-07-23 06:43:19,067 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 24 states, 17 states have (on average 1.1764705882352942) internal successors, (20), 20 states have internal predecessors, (20), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:19,068 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 24 states to 24 states and 24 transitions. [2022-07-23 06:43:19,068 INFO L78 Accepts]: Start accepts. Automaton has 24 states and 24 transitions. Word has length 16 [2022-07-23 06:43:19,068 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:43:19,068 INFO L495 AbstractCegarLoop]: Abstraction has 24 states and 24 transitions. [2022-07-23 06:43:19,069 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 7 states have (on average 1.7142857142857142) internal successors, (12), 6 states have internal predecessors, (12), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:19,069 INFO L276 IsEmpty]: Start isEmpty. Operand 24 states and 24 transitions. [2022-07-23 06:43:19,069 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 06:43:19,070 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:19,070 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:19,078 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-07-23 06:43:19,283 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (4)] Forceful destruction successful, exit code 0 [2022-07-23 06:43:19,478 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt [2022-07-23 06:43:19,479 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:19,479 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:19,480 INFO L85 PathProgramCache]: Analyzing trace with hash 78968552, now seen corresponding path program 1 times [2022-07-23 06:43:19,480 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:19,480 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1089092007] [2022-07-23 06:43:19,480 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:19,480 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:19,481 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:19,482 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:43:19,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-07-23 06:43:19,523 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:19,526 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 9 conjunts are in the unsatisfiable core [2022-07-23 06:43:19,528 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:19,532 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:19,570 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 06:43:19,587 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-23 06:43:19,598 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:43:19,599 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:43:19,599 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:43:19,599 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1089092007] [2022-07-23 06:43:19,599 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1089092007] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:43:19,599 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:43:19,599 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:43:19,599 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [936131487] [2022-07-23 06:43:19,600 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:43:19,600 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:43:19,600 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:43:19,600 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:43:19,601 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:43:19,601 INFO L87 Difference]: Start difference. First operand 24 states and 24 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 06:43:19,713 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:43:19,713 INFO L93 Difference]: Finished difference Result 23 states and 23 transitions. [2022-07-23 06:43:19,714 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:43:19,714 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-23 06:43:19,715 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:43:19,715 INFO L225 Difference]: With dead ends: 23 [2022-07-23 06:43:19,715 INFO L226 Difference]: Without dead ends: 23 [2022-07-23 06:43:19,716 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:43:19,717 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 8 mSDsluCounter, 36 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 8 SdHoareTripleChecker+Valid, 52 SdHoareTripleChecker+Invalid, 70 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:43:19,717 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [8 Valid, 52 Invalid, 70 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 69 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:43:19,718 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 23 states. [2022-07-23 06:43:19,720 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 23 to 23. [2022-07-23 06:43:19,720 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 23 states, 17 states have (on average 1.1176470588235294) internal successors, (19), 19 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:19,721 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 23 states to 23 states and 23 transitions. [2022-07-23 06:43:19,721 INFO L78 Accepts]: Start accepts. Automaton has 23 states and 23 transitions. Word has length 19 [2022-07-23 06:43:19,721 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:43:19,721 INFO L495 AbstractCegarLoop]: Abstraction has 23 states and 23 transitions. [2022-07-23 06:43:19,722 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 06:43:19,722 INFO L276 IsEmpty]: Start isEmpty. Operand 23 states and 23 transitions. [2022-07-23 06:43:19,722 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 20 [2022-07-23 06:43:19,723 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:19,723 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:19,737 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-07-23 06:43:19,931 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:43:19,932 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:19,932 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:19,932 INFO L85 PathProgramCache]: Analyzing trace with hash 78968553, now seen corresponding path program 1 times [2022-07-23 06:43:19,933 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:19,933 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [894485154] [2022-07-23 06:43:19,933 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:19,933 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:19,933 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:19,935 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:43:19,937 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-07-23 06:43:19,986 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:19,988 INFO L263 TraceCheckSpWp]: Trace formula consists of 66 conjuncts, 16 conjunts are in the unsatisfiable core [2022-07-23 06:43:19,990 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:19,995 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-07-23 06:43:20,053 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 06:43:20,062 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-07-23 06:43:20,095 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-07-23 06:43:20,101 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 9 [2022-07-23 06:43:20,125 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 4 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:43:20,126 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-07-23 06:43:20,128 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:43:20,129 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [894485154] [2022-07-23 06:43:20,130 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [894485154] provided 1 perfect and 0 imperfect interpolant sequences [2022-07-23 06:43:20,130 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-07-23 06:43:20,130 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-07-23 06:43:20,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2069496391] [2022-07-23 06:43:20,134 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-07-23 06:43:20,134 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-07-23 06:43:20,134 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:43:20,135 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-07-23 06:43:20,136 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-07-23 06:43:20,136 INFO L87 Difference]: Start difference. First operand 23 states and 23 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 06:43:20,275 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:43:20,275 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-07-23 06:43:20,278 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-07-23 06:43:20,278 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 19 [2022-07-23 06:43:20,279 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:43:20,279 INFO L225 Difference]: With dead ends: 22 [2022-07-23 06:43:20,279 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 06:43:20,279 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2022-07-23 06:43:20,280 INFO L413 NwaCegarLoop]: 16 mSDtfsCounter, 6 mSDsluCounter, 52 mSDsCounter, 0 mSdLazyCounter, 49 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 68 SdHoareTripleChecker+Invalid, 50 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 49 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:43:20,281 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [6 Valid, 68 Invalid, 50 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 49 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-07-23 06:43:20,281 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 06:43:20,283 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 22. [2022-07-23 06:43:20,283 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 22 states, 17 states have (on average 1.0588235294117647) internal successors, (18), 18 states have internal predecessors, (18), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:20,284 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 22 states to 22 states and 22 transitions. [2022-07-23 06:43:20,284 INFO L78 Accepts]: Start accepts. Automaton has 22 states and 22 transitions. Word has length 19 [2022-07-23 06:43:20,284 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:43:20,284 INFO L495 AbstractCegarLoop]: Abstraction has 22 states and 22 transitions. [2022-07-23 06:43:20,284 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-07-23 06:43:20,284 INFO L276 IsEmpty]: Start isEmpty. Operand 22 states and 22 transitions. [2022-07-23 06:43:20,285 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-07-23 06:43:20,285 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:20,285 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:20,302 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-07-23 06:43:20,493 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:43:20,494 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:20,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:20,494 INFO L85 PathProgramCache]: Analyzing trace with hash 570997579, now seen corresponding path program 1 times [2022-07-23 06:43:20,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:20,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298189745] [2022-07-23 06:43:20,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:20,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:20,495 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:20,496 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) [2022-07-23 06:43:20,497 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-07-23 06:43:20,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-07-23 06:43:20,560 INFO L263 TraceCheckSpWp]: Trace formula consists of 84 conjuncts, 7 conjunts are in the unsatisfiable core [2022-07-23 06:43:20,561 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-07-23 06:43:20,760 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 1 proven. 4 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-07-23 06:43:20,760 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-07-23 06:43:20,885 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 4 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-07-23 06:43:20,886 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-07-23 06:43:20,886 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298189745] [2022-07-23 06:43:20,886 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298189745] provided 0 perfect and 2 imperfect interpolant sequences [2022-07-23 06:43:20,886 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-07-23 06:43:20,886 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 5] total 11 [2022-07-23 06:43:20,886 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [532351535] [2022-07-23 06:43:20,886 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-07-23 06:43:20,887 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-07-23 06:43:20,887 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-07-23 06:43:20,887 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-07-23 06:43:20,887 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=94, Unknown=0, NotChecked=0, Total=132 [2022-07-23 06:43:20,888 INFO L87 Difference]: Start difference. First operand 22 states and 22 transitions. Second operand has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 06:43:21,002 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-07-23 06:43:21,002 INFO L93 Difference]: Finished difference Result 22 states and 22 transitions. [2022-07-23 06:43:21,003 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-07-23 06:43:21,003 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 23 [2022-07-23 06:43:21,004 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-07-23 06:43:21,004 INFO L225 Difference]: With dead ends: 22 [2022-07-23 06:43:21,004 INFO L226 Difference]: Without dead ends: 22 [2022-07-23 06:43:21,004 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 33 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=110, Unknown=0, NotChecked=0, Total=156 [2022-07-23 06:43:21,005 INFO L413 NwaCegarLoop]: 11 mSDtfsCounter, 22 mSDsluCounter, 26 mSDsCounter, 0 mSdLazyCounter, 69 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 37 SdHoareTripleChecker+Invalid, 84 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 69 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-07-23 06:43:21,005 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 37 Invalid, 84 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 69 Invalid, 0 Unknown, 12 Unchecked, 0.1s Time] [2022-07-23 06:43:21,006 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 22 states. [2022-07-23 06:43:21,007 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 22 to 21. [2022-07-23 06:43:21,008 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 21 states, 17 states have (on average 1.0) internal successors, (17), 17 states have internal predecessors, (17), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-07-23 06:43:21,008 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 21 states to 21 states and 21 transitions. [2022-07-23 06:43:21,008 INFO L78 Accepts]: Start accepts. Automaton has 21 states and 21 transitions. Word has length 23 [2022-07-23 06:43:21,008 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-07-23 06:43:21,008 INFO L495 AbstractCegarLoop]: Abstraction has 21 states and 21 transitions. [2022-07-23 06:43:21,009 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 11 states have (on average 3.4545454545454546) internal successors, (38), 10 states have internal predecessors, (38), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-07-23 06:43:21,009 INFO L276 IsEmpty]: Start isEmpty. Operand 21 states and 21 transitions. [2022-07-23 06:43:21,009 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 26 [2022-07-23 06:43:21,009 INFO L187 NwaCegarLoop]: Found error trace [2022-07-23 06:43:21,009 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-07-23 06:43:21,025 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-07-23 06:43:21,223 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:43:21,224 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 9 more)] === [2022-07-23 06:43:21,224 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-07-23 06:43:21,225 INFO L85 PathProgramCache]: Analyzing trace with hash -1027138706, now seen corresponding path program 1 times [2022-07-23 06:43:21,225 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-07-23 06:43:21,225 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1842890236] [2022-07-23 06:43:21,225 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-07-23 06:43:21,225 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-07-23 06:43:21,225 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2022-07-23 06:43:21,226 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-07-23 06:43:21,227 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-07-23 06:43:21,301 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 06:43:21,301 INFO L352 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2022-07-23 06:43:21,332 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2022-07-23 06:43:21,376 INFO L130 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2022-07-23 06:43:21,377 INFO L271 BasicCegarLoop]: Counterexample is feasible [2022-07-23 06:43:21,378 INFO L805 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr11ASSERT_VIOLATIONMEMORY_LEAK (11 of 12 remaining) [2022-07-23 06:43:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE (10 of 12 remaining) [2022-07-23 06:43:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE (9 of 12 remaining) [2022-07-23 06:43:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (8 of 12 remaining) [2022-07-23 06:43:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE (7 of 12 remaining) [2022-07-23 06:43:21,380 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE (6 of 12 remaining) [2022-07-23 06:43:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE (5 of 12 remaining) [2022-07-23 06:43:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr6REQUIRES_VIOLATIONMEMORY_DEREFERENCE (4 of 12 remaining) [2022-07-23 06:43:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr7REQUIRES_VIOLATIONMEMORY_DEREFERENCE (3 of 12 remaining) [2022-07-23 06:43:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_FREE (2 of 12 remaining) [2022-07-23 06:43:21,381 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr9ASSERT_VIOLATIONMEMORY_FREE (1 of 12 remaining) [2022-07-23 06:43:21,382 INFO L805 garLoopResultBuilder]: Registering result UNKNOWN for location ULTIMATE.startErr10ASSERT_VIOLATIONMEMORY_FREE (0 of 12 remaining) [2022-07-23 06:43:21,406 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-07-23 06:43:21,582 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2022-07-23 06:43:21,585 INFO L356 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1] [2022-07-23 06:43:21,587 INFO L176 ceAbstractionStarter]: Computing trace abstraction results [2022-07-23 06:43:21,608 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 23.07 06:43:21 BoogieIcfgContainer [2022-07-23 06:43:21,608 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2022-07-23 06:43:21,609 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2022-07-23 06:43:21,609 INFO L271 PluginConnector]: Initializing Witness Printer... [2022-07-23 06:43:21,609 INFO L275 PluginConnector]: Witness Printer initialized [2022-07-23 06:43:21,609 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 23.07 06:43:11" (3/4) ... [2022-07-23 06:43:21,612 INFO L140 WitnessPrinter]: No result that supports witness generation found [2022-07-23 06:43:21,612 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2022-07-23 06:43:21,614 INFO L158 Benchmark]: Toolchain (without parser) took 11021.55ms. Allocated memory was 56.6MB in the beginning and 86.0MB in the end (delta: 29.4MB). Free memory was 33.7MB in the beginning and 58.0MB in the end (delta: -24.3MB). Peak memory consumption was 4.2MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,614 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 06:43:21,614 INFO L158 Benchmark]: CACSL2BoogieTranslator took 437.91ms. Allocated memory is still 56.6MB. Free memory was 33.5MB in the beginning and 31.3MB in the end (delta: 2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,614 INFO L158 Benchmark]: Boogie Procedure Inliner took 36.66ms. Allocated memory is still 56.6MB. Free memory was 31.3MB in the beginning and 29.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,615 INFO L158 Benchmark]: Boogie Preprocessor took 22.37ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 28.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,618 INFO L158 Benchmark]: RCFGBuilder took 339.49ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 44.7MB in the end (delta: -16.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,619 INFO L158 Benchmark]: TraceAbstraction took 10174.64ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 44.2MB in the beginning and 58.6MB in the end (delta: -14.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. [2022-07-23 06:43:21,619 INFO L158 Benchmark]: Witness Printer took 3.38ms. Allocated memory is still 86.0MB. Free memory was 58.6MB in the beginning and 58.0MB in the end (delta: 632.1kB). There was no memory consumed. Max. memory is 16.1GB. [2022-07-23 06:43:21,621 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 56.6MB. Free memory was 38.5MB in the beginning and 38.4MB in the end (delta: 47.2kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 437.91ms. Allocated memory is still 56.6MB. Free memory was 33.5MB in the beginning and 31.3MB in the end (delta: 2.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 36.66ms. Allocated memory is still 56.6MB. Free memory was 31.3MB in the beginning and 29.4MB in the end (delta: 1.9MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 22.37ms. Allocated memory is still 56.6MB. Free memory was 29.4MB in the beginning and 28.3MB in the end (delta: 1.2MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 339.49ms. Allocated memory was 56.6MB in the beginning and 69.2MB in the end (delta: 12.6MB). Free memory was 28.1MB in the beginning and 44.7MB in the end (delta: -16.6MB). Peak memory consumption was 7.8MB. Max. memory is 16.1GB. * TraceAbstraction took 10174.64ms. Allocated memory was 69.2MB in the beginning and 86.0MB in the end (delta: 16.8MB). Free memory was 44.2MB in the beginning and 58.6MB in the end (delta: -14.4MB). Peak memory consumption was 3.2MB. Max. memory is 16.1GB. * Witness Printer took 3.38ms. Allocated memory is still 86.0MB. Free memory was 58.6MB in the beginning and 58.0MB in the end (delta: 632.1kB). There was no memory consumed. 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 - UnprovableResult [Line: 568]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 568. Possible FailurePath: [L569] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={1:0}] [L566] return temp; VAL [\result={1:0}, temp={1:0}] [L569] RET, EXPR alloc_node() VAL [alloc_node()={1:0}] [L569] struct node* s = alloc_node(); [L570] CALL, EXPR alloc_node() [L562] struct node* temp = (struct node*) malloc(sizeof(struct node)); [L563] COND FALSE !(((void *)0) == temp) VAL [temp={2:0}] [L566] return temp; VAL [\result={2:0}, temp={2:0}] [L570] RET, EXPR alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L570] s->next = alloc_node() VAL [alloc_node()={2:0}, s={1:0}] [L571] EXPR s->next VAL [s={1:0}, s->next={2:0}] [L571] *s = *(s->next) VAL [*s = *(s->next)={0:0}, s={1:0}, s->next={2:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) VAL [s={1:0}] [L572] free(s) [L573] return 0; VAL [\result=0, s={1:0}] - 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: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 572]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 2 procedures, 35 locations, 12 error locations. Started 1 CEGAR loops. OverallTime: 10.1s, OverallIterations: 6, TraceHistogramMax: 2, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 0.8s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 74 SdHoareTripleChecker+Valid, 0.5s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 73 mSDsluCounter, 255 SdHoareTripleChecker+Invalid, 0.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 60 IncrementalHoareTripleChecker+Unchecked, 188 mSDsCounter, 16 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 356 IncrementalHoareTripleChecker+Invalid, 432 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 16 mSolverCounterUnsat, 67 mSDtfsCounter, 356 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 155 GetRequests, 102 SyntacticMatches, 6 SemanticMatches, 47 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 6.0s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=35occurred in iteration=0, InterpolantAutomatonStates: 41, 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, 1 StatesRemovedByMinimization, 1 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.1s SsaConstructionTime, 0.1s SatisfiabilityAnalysisTime, 7.1s InterpolantComputationTime, 134 NumberOfCodeBlocks, 134 NumberOfCodeBlocksAsserted, 7 NumberOfCheckSat, 140 ConstructedInterpolants, 22 QuantifiedInterpolants, 862 SizeOfPredicates, 22 NumberOfNonLiveVariables, 363 ConjunctsInSsa, 78 ConjunctsInUnsatCore, 8 InterpolantComputations, 2 PerfectInterpolantSequences, 16/40 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2022-07-23 06:43:21,641 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample