./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 5fbdf5bf Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.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 9988836ddee06b99001d03a87a3e72125eac1288 ................................................................................................................................... Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/config -Xmx15G -Xms4m -jar /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data -tc /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/AutomizerMemDerefMemtrack.xml -i ../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.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 9988836ddee06b99001d03a87a3e72125eac1288 ....................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:31,763 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:31,765 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:31,797 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:31,797 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:31,800 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:31,801 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:31,811 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:31,813 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:31,817 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:31,818 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:31,820 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:31,821 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:31,823 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:31,824 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:31,826 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:31,827 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:31,828 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:31,829 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:31,834 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:31,835 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:31,836 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:31,837 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:31,838 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:31,842 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:31,843 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:31,843 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:31,844 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:31,844 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:31,845 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:31,845 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:31,846 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:31,847 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:31,847 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:31,848 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:31,848 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:31,849 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:31,849 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:31,849 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:31,850 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:31,850 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:31,851 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-30 17:54:31,883 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:31,883 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:31,884 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:31,884 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:31,885 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:31,885 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:31,885 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:31,886 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:31,886 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:31,886 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:31,886 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:31,887 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:31,887 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:31,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:31,888 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:31,888 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:31,888 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-30 17:54:31,888 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-30 17:54:31,888 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:31,888 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9988836ddee06b99001d03a87a3e72125eac1288 [2021-08-30 17:54:32,140 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:32,161 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:32,163 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:32,165 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:32,165 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:32,166 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-08-30 17:54:32,225 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f837bf/6424255af4384d3297d16252c13eea23/FLAGb21094470 [2021-08-30 17:54:32,627 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:32,627 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-08-30 17:54:32,641 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f837bf/6424255af4384d3297d16252c13eea23/FLAGb21094470 [2021-08-30 17:54:32,650 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/4e1f837bf/6424255af4384d3297d16252c13eea23 [2021-08-30 17:54:32,652 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:32,653 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:32,654 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:32,654 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:32,656 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:32,656 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:32" (1/1) ... [2021-08-30 17:54:32,657 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@50a80164 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:32, skipping insertion in model container [2021-08-30 17:54:32,657 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:32" (1/1) ... [2021-08-30 17:54:32,661 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:32,683 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:32,960 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:32,976 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2021-08-30 17:54:32,977 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@1615e237 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:32, skipping insertion in model container [2021-08-30 17:54:32,977 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:32,978 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-30 17:54:32,980 INFO L158 Benchmark]: Toolchain (without parser) took 325.76ms. Allocated memory is still 58.7MB. Free memory was 34.9MB in the beginning and 38.2MB in the end (delta: -3.2MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:54:32,981 INFO L158 Benchmark]: CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 39.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:54:32,981 INFO L158 Benchmark]: CACSL2BoogieTranslator took 323.87ms. Allocated memory is still 58.7MB. Free memory was 34.8MB in the beginning and 38.2MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. [2021-08-30 17:54:32,983 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.11ms. Allocated memory is still 58.7MB. Free memory was 39.9MB in the beginning and 39.8MB in the end (delta: 44.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 323.87ms. Allocated memory is still 58.7MB. Free memory was 34.8MB in the beginning and 38.2MB in the end (delta: -3.4MB). Peak memory consumption was 12.6MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... ### Bit-precise run ### This is Ultimate 0.2.1-wip.dd.seqcomp-5fbdf5b [2021-08-30 17:54:34,275 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-30 17:54:34,276 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-30 17:54:34,296 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-30 17:54:34,296 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-30 17:54:34,297 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-30 17:54:34,298 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-30 17:54:34,299 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-30 17:54:34,301 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-30 17:54:34,301 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-30 17:54:34,302 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-30 17:54:34,303 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-30 17:54:34,303 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-30 17:54:34,304 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-30 17:54:34,305 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-30 17:54:34,306 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-30 17:54:34,306 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-30 17:54:34,307 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-30 17:54:34,308 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-30 17:54:34,309 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-30 17:54:34,310 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-30 17:54:34,317 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-30 17:54:34,317 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-30 17:54:34,318 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-30 17:54:34,321 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-30 17:54:34,324 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-30 17:54:34,326 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-30 17:54:34,327 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-30 17:54:34,328 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-30 17:54:34,329 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-30 17:54:34,329 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-30 17:54:34,330 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-30 17:54:34,331 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-30 17:54:34,332 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-30 17:54:34,333 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-30 17:54:34,334 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-30 17:54:34,334 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-30 17:54:34,335 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-30 17:54:34,335 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-30 17:54:34,335 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-30 17:54:34,336 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-30 17:54:34,337 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-30 17:54:34,372 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-30 17:54:34,374 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-30 17:54:34,374 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-30 17:54:34,374 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-30 17:54:34,376 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-30 17:54:34,376 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-30 17:54:34,376 INFO L138 SettingsManager]: * Use SBE=true [2021-08-30 17:54:34,376 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-30 17:54:34,376 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-30 17:54:34,377 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-30 17:54:34,377 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-30 17:54:34,377 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-30 17:54:34,377 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-30 17:54:34,378 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-30 17:54:34,379 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-30 17:54:34,379 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-30 17:54:34,379 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-30 17:54:34,379 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-30 17:54:34,379 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:34,379 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-30 17:54:34,379 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-30 17:54:34,380 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-30 17:54:34,380 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-30 17:54:34,380 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-30 17:54:34,380 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-30 17:54:34,380 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9988836ddee06b99001d03a87a3e72125eac1288 [2021-08-30 17:54:34,613 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-30 17:54:34,639 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-30 17:54:34,641 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-30 17:54:34,642 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-30 17:54:34,643 INFO L275 PluginConnector]: CDTParser initialized [2021-08-30 17:54:34,644 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-08-30 17:54:34,698 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715c0ed38/dbcd3337f70a48b0b93abb75bdc0203f/FLAG1f695ba78 [2021-08-30 17:54:35,097 INFO L306 CDTParser]: Found 1 translation units. [2021-08-30 17:54:35,097 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test6_3.i [2021-08-30 17:54:35,108 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715c0ed38/dbcd3337f70a48b0b93abb75bdc0203f/FLAG1f695ba78 [2021-08-30 17:54:35,485 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/715c0ed38/dbcd3337f70a48b0b93abb75bdc0203f [2021-08-30 17:54:35,486 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-30 17:54:35,487 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-30 17:54:35,488 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:35,488 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-30 17:54:35,495 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-30 17:54:35,495 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,496 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@45365fc0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35, skipping insertion in model container [2021-08-30 17:54:35,496 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,501 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-30 17:54:35,532 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:35,773 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:35,785 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-30 17:54:35,790 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-30 17:54:35,830 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:35,856 INFO L203 MainTranslator]: Completed pre-run [2021-08-30 17:54:35,900 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-30 17:54:35,928 INFO L208 MainTranslator]: Completed translation [2021-08-30 17:54:35,928 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35 WrapperNode [2021-08-30 17:54:35,928 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-30 17:54:35,929 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-30 17:54:35,929 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-30 17:54:35,929 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-30 17:54:35,937 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,937 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,960 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,960 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:35,998 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:36,002 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:36,006 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:36,012 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-30 17:54:36,012 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-30 17:54:36,013 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-30 17:54:36,013 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-30 17:54:36,013 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (1/1) ... [2021-08-30 17:54:36,021 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-30 17:54:36,033 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:54:36,044 INFO L229 MonitoredProcess]: Starting monitored process 1 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-08-30 17:54:36,052 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-08-30 17:54:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-30 17:54:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-30 17:54:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:36,075 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-30 17:54:36,076 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-30 17:54:36,077 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-30 17:54:36,078 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-30 17:54:36,079 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-30 17:54:36,080 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure f6 [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure g6 [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure probe1_6 [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure disconnect_2_6 [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-30 17:54:36,081 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-30 17:54:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-30 17:54:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-30 17:54:36,082 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-30 17:54:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-30 17:54:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-30 17:54:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-30 17:54:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-30 17:54:36,082 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-30 17:54:36,083 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-30 17:54:36,084 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-30 17:54:36,085 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-30 17:54:36,086 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-30 17:54:36,087 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-30 17:54:36,088 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-30 17:54:36,089 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-30 17:54:36,090 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-30 17:54:36,091 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-30 17:54:36,092 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-30 17:54:36,093 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-30 17:54:36,094 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-30 17:54:36,095 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-30 17:54:36,096 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-30 17:54:36,097 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-30 17:54:36,098 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-30 17:54:36,099 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure f6 [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure g6 [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure probe1_6 [2021-08-30 17:54:36,100 INFO L130 BoogieDeclarations]: Found specification of procedure disconnect_2_6 [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-30 17:54:36,101 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-30 17:54:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-30 17:54:36,102 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-30 17:54:36,402 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:36,495 WARN L804 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-30 17:54:36,564 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-30 17:54:36,564 INFO L299 CfgBuilder]: Removed 1 assume(true) statements. [2021-08-30 17:54:36,567 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:36 BoogieIcfgContainer [2021-08-30 17:54:36,567 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-30 17:54:36,569 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-30 17:54:36,570 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-30 17:54:36,572 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-30 17:54:36,572 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 30.08 05:54:35" (1/3) ... [2021-08-30 17:54:36,573 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794d31c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:36, skipping insertion in model container [2021-08-30 17:54:36,573 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 30.08 05:54:35" (2/3) ... [2021-08-30 17:54:36,574 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@794d31c8 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 30.08 05:54:36, skipping insertion in model container [2021-08-30 17:54:36,574 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:36" (3/3) ... [2021-08-30 17:54:36,575 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test6_3.i [2021-08-30 17:54:36,579 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-30 17:54:36,580 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 78 error locations. [2021-08-30 17:54:36,618 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-30 17:54:36,624 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-08-30 17:54:36,624 INFO L340 AbstractCegarLoop]: Starting to check reachability of 78 error locations. [2021-08-30 17:54:36,637 INFO L276 IsEmpty]: Start isEmpty. Operand has 125 states, 70 states have (on average 1.5) internal successors, (105), 96 states have internal predecessors, (105), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) [2021-08-30 17:54:36,643 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:36,643 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:36,643 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:36,644 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:36,647 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:36,647 INFO L82 PathProgramCache]: Analyzing trace with hash 24886788, now seen corresponding path program 1 times [2021-08-30 17:54:36,655 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:36,656 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1676955101] [2021-08-30 17:54:36,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:36,656 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:36,657 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:36,662 INFO L229 MonitoredProcess]: Starting monitored process 2 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:36,668 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-30 17:54:36,817 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:36,820 INFO L263 TraceCheckSpWp]: Trace formula consists of 106 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:36,824 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:37,003 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,003 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:37,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,126 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:37,129 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1676955101] [2021-08-30 17:54:37,130 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1676955101] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:37,130 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:37,130 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:37,132 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1117988045] [2021-08-30 17:54:37,135 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:37,136 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:37,158 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:37,158 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:37,165 INFO L87 Difference]: Start difference. First operand has 125 states, 70 states have (on average 1.5) internal successors, (105), 96 states have internal predecessors, (105), 15 states have call successors, (15), 14 states have call predecessors, (15), 14 states have return successors, (15), 15 states have call predecessors, (15), 15 states have call successors, (15) Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:37,333 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:37,333 INFO L93 Difference]: Finished difference Result 76 states and 85 transitions. [2021-08-30 17:54:37,336 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:37,337 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 20 [2021-08-30 17:54:37,337 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:37,348 INFO L225 Difference]: With dead ends: 76 [2021-08-30 17:54:37,348 INFO L226 Difference]: Without dead ends: 73 [2021-08-30 17:54:37,349 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 36 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 17.58ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:37,351 INFO L928 BasicCegarLoop]: 19 mSDtfsCounter, 18 mSDsluCounter, 162 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.74ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 20 SdHoareTripleChecker+Valid, 74 SdHoareTripleChecker+Invalid, 174 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 7.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 122.41ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:37,352 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [20 Valid, 74 Invalid, 174 Unknown, 0 Unchecked, 7.17ms Time], IncrementalHoareTripleChecker [1 Valid, 173 Invalid, 0 Unknown, 0 Unchecked, 122.41ms Time] [2021-08-30 17:54:37,362 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 73 states. [2021-08-30 17:54:37,381 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 73 to 56. [2021-08-30 17:54:37,381 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 32 states have (on average 1.375) internal successors, (44), 40 states have internal predecessors, (44), 8 states have call successors, (8), 8 states have call predecessors, (8), 8 states have return successors, (8), 8 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:54:37,382 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-08-30 17:54:37,383 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 20 [2021-08-30 17:54:37,383 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:37,383 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-08-30 17:54:37,384 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-30 17:54:37,384 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-08-30 17:54:37,384 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:37,384 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:37,384 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:37,393 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:37,591 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:37,591 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:37,591 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:37,591 INFO L82 PathProgramCache]: Analyzing trace with hash -171626717, now seen corresponding path program 1 times [2021-08-30 17:54:37,592 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:37,592 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1937696958] [2021-08-30 17:54:37,592 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:37,592 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:37,592 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:37,593 INFO L229 MonitoredProcess]: Starting monitored process 3 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:37,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-30 17:54:37,702 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:37,704 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 10 conjunts are in the unsatisfiable core [2021-08-30 17:54:37,706 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:37,753 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:37,754 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:37,824 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-08-30 17:54:37,860 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,860 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:37,938 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 10 treesize of output 8 [2021-08-30 17:54:37,985 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:37,985 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:37,986 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1937696958] [2021-08-30 17:54:37,986 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1937696958] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:37,986 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:37,986 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 4 [2021-08-30 17:54:37,986 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2011345101] [2021-08-30 17:54:37,987 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:37,987 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:37,987 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:37,988 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:37,988 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:38,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:38,171 INFO L93 Difference]: Finished difference Result 92 states and 102 transitions. [2021-08-30 17:54:38,171 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:38,172 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) Word has length 20 [2021-08-30 17:54:38,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:38,173 INFO L225 Difference]: With dead ends: 92 [2021-08-30 17:54:38,173 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 17:54:38,173 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 30 SyntacticMatches, 6 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 38.87ms TimeCoverageRelationStatistics Valid=14, Invalid=16, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:38,174 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 96 mSDsluCounter, 32 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 113.66ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 99 SdHoareTripleChecker+Valid, 14 SdHoareTripleChecker+Invalid, 160 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 3.31ms SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 146.27ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:38,174 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [99 Valid, 14 Invalid, 160 Unknown, 0 Unchecked, 3.31ms Time], IncrementalHoareTripleChecker [31 Valid, 129 Invalid, 0 Unknown, 0 Unchecked, 146.27ms Time] [2021-08-30 17:54:38,175 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 17:54:38,179 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 79. [2021-08-30 17:54:38,180 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 48 states have (on average 1.3958333333333333) internal successors, (67), 58 states have internal predecessors, (67), 12 states have call successors, (12), 9 states have call predecessors, (12), 11 states have return successors, (14), 14 states have call predecessors, (14), 11 states have call successors, (14) [2021-08-30 17:54:38,185 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 93 transitions. [2021-08-30 17:54:38,185 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 93 transitions. Word has length 20 [2021-08-30 17:54:38,186 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:38,186 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 93 transitions. [2021-08-30 17:54:38,186 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 4 states have call successors, (7), 4 states have call predecessors, (7), 3 states have return successors, (5), 3 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-30 17:54:38,186 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 93 transitions. [2021-08-30 17:54:38,187 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2021-08-30 17:54:38,187 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:38,187 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:38,196 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Ended with exit code 0 [2021-08-30 17:54:38,387 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,388 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:38,388 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:38,388 INFO L82 PathProgramCache]: Analyzing trace with hash -171626716, now seen corresponding path program 1 times [2021-08-30 17:54:38,389 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:38,389 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1181361407] [2021-08-30 17:54:38,389 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:38,389 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:38,389 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:38,390 INFO L229 MonitoredProcess]: Starting monitored process 4 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:38,419 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-30 17:54:38,500 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:38,502 INFO L263 TraceCheckSpWp]: Trace formula consists of 102 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-30 17:54:38,503 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:38,522 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:38,523 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:38,566 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-08-30 17:54:38,628 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,628 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:38,809 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-08-30 17:54:38,938 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:38,938 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:38,938 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1181361407] [2021-08-30 17:54:38,938 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1181361407] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:38,938 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:38,939 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 5 [2021-08-30 17:54:38,939 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [155794338] [2021-08-30 17:54:38,939 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:38,939 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:38,939 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:38,939 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=17, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:38,939 INFO L87 Difference]: Start difference. First operand 79 states and 93 transitions. Second operand has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:39,213 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:39,213 INFO L93 Difference]: Finished difference Result 110 states and 118 transitions. [2021-08-30 17:54:39,214 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:39,214 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) Word has length 20 [2021-08-30 17:54:39,214 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:39,215 INFO L225 Difference]: With dead ends: 110 [2021-08-30 17:54:39,215 INFO L226 Difference]: Without dead ends: 100 [2021-08-30 17:54:39,215 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 40 GetRequests, 35 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 52.96ms TimeCoverageRelationStatistics Valid=19, Invalid=23, Unknown=0, NotChecked=0, Total=42 [2021-08-30 17:54:39,216 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 107 mSDsluCounter, 73 mSDsCounter, 0 mSdLazyCounter, 195 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 200.63ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 107 SdHoareTripleChecker+Valid, 19 SdHoareTripleChecker+Invalid, 231 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 2.26ms SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 195 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 253.38ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:39,216 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [107 Valid, 19 Invalid, 231 Unknown, 0 Unchecked, 2.26ms Time], IncrementalHoareTripleChecker [36 Valid, 195 Invalid, 0 Unknown, 0 Unchecked, 253.38ms Time] [2021-08-30 17:54:39,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2021-08-30 17:54:39,223 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 90. [2021-08-30 17:54:39,224 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 56 states have (on average 1.375) internal successors, (77), 66 states have internal predecessors, (77), 12 states have call successors, (12), 12 states have call predecessors, (12), 14 states have return successors, (14), 14 states have call predecessors, (14), 11 states have call successors, (14) [2021-08-30 17:54:39,228 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 103 transitions. [2021-08-30 17:54:39,228 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 103 transitions. Word has length 20 [2021-08-30 17:54:39,228 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:39,229 INFO L470 AbstractCegarLoop]: Abstraction has 90 states and 103 transitions. [2021-08-30 17:54:39,229 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.8) internal successors, (24), 5 states have internal predecessors, (24), 5 states have call successors, (9), 5 states have call predecessors, (9), 4 states have return successors, (6), 4 states have call predecessors, (6), 5 states have call successors, (6) [2021-08-30 17:54:39,229 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 103 transitions. [2021-08-30 17:54:39,229 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-30 17:54:39,230 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:39,230 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:39,256 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:39,430 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,430 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:39,431 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:39,431 INFO L82 PathProgramCache]: Analyzing trace with hash 2076107592, now seen corresponding path program 1 times [2021-08-30 17:54:39,431 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:39,431 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [515231440] [2021-08-30 17:54:39,431 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:39,431 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,431 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:39,432 INFO L229 MonitoredProcess]: Starting monitored process 5 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:39,433 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-30 17:54:39,538 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:39,540 INFO L263 TraceCheckSpWp]: Trace formula consists of 108 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:39,541 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:39,576 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,577 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:39,620 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:39,620 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:39,621 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [515231440] [2021-08-30 17:54:39,621 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [515231440] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:39,621 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:39,621 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-30 17:54:39,621 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [262228117] [2021-08-30 17:54:39,621 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:39,621 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:39,621 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:39,622 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:39,622 INFO L87 Difference]: Start difference. First operand 90 states and 103 transitions. Second operand has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:39,727 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:39,727 INFO L93 Difference]: Finished difference Result 89 states and 101 transitions. [2021-08-30 17:54:39,727 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:39,727 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) Word has length 22 [2021-08-30 17:54:39,727 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:39,728 INFO L225 Difference]: With dead ends: 89 [2021-08-30 17:54:39,728 INFO L226 Difference]: Without dead ends: 89 [2021-08-30 17:54:39,728 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 40 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 6.01ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:39,729 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 14 mSDsluCounter, 130 mSDsCounter, 0 mSdLazyCounter, 135 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 82.70ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 57 SdHoareTripleChecker+Invalid, 136 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.17ms SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 135 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 98.40ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:39,729 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 57 Invalid, 136 Unknown, 0 Unchecked, 1.17ms Time], IncrementalHoareTripleChecker [1 Valid, 135 Invalid, 0 Unknown, 0 Unchecked, 98.40ms Time] [2021-08-30 17:54:39,730 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2021-08-30 17:54:39,734 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 89. [2021-08-30 17:54:39,734 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 89 states, 56 states have (on average 1.3392857142857142) internal successors, (75), 65 states have internal predecessors, (75), 12 states have call successors, (12), 12 states have call predecessors, (12), 14 states have return successors, (14), 14 states have call predecessors, (14), 11 states have call successors, (14) [2021-08-30 17:54:39,735 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 89 states to 89 states and 101 transitions. [2021-08-30 17:54:39,735 INFO L78 Accepts]: Start accepts. Automaton has 89 states and 101 transitions. Word has length 22 [2021-08-30 17:54:39,735 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:39,735 INFO L470 AbstractCegarLoop]: Abstraction has 89 states and 101 transitions. [2021-08-30 17:54:39,735 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.25) internal successors, (13), 4 states have internal predecessors, (13), 2 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 3 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-30 17:54:39,735 INFO L276 IsEmpty]: Start isEmpty. Operand 89 states and 101 transitions. [2021-08-30 17:54:39,736 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2021-08-30 17:54:39,736 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:39,736 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:39,752 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:39,936 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,936 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:39,937 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:39,937 INFO L82 PathProgramCache]: Analyzing trace with hash -65173633, now seen corresponding path program 1 times [2021-08-30 17:54:39,937 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:39,937 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2015774493] [2021-08-30 17:54:39,937 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:39,937 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:39,937 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:39,938 INFO L229 MonitoredProcess]: Starting monitored process 6 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:39,940 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-30 17:54:40,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:40,046 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-30 17:54:40,047 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:40,203 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,204 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:40,299 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,300 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:40,300 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2015774493] [2021-08-30 17:54:40,300 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2015774493] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:40,300 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:40,300 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 4] imperfect sequences [] total 9 [2021-08-30 17:54:40,300 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1413774739] [2021-08-30 17:54:40,300 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:54:40,301 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:40,301 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:54:40,301 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:40,301 INFO L87 Difference]: Start difference. First operand 89 states and 101 transitions. Second operand has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,499 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:40,500 INFO L93 Difference]: Finished difference Result 90 states and 99 transitions. [2021-08-30 17:54:40,500 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-30 17:54:40,500 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 23 [2021-08-30 17:54:40,500 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:40,501 INFO L225 Difference]: With dead ends: 90 [2021-08-30 17:54:40,501 INFO L226 Difference]: Without dead ends: 90 [2021-08-30 17:54:40,501 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 36 SyntacticMatches, 1 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 67.77ms TimeCoverageRelationStatistics Valid=30, Invalid=60, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:54:40,502 INFO L928 BasicCegarLoop]: 14 mSDtfsCounter, 72 mSDsluCounter, 144 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 148.19ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 78 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 296 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.96ms SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 56 IncrementalHoareTripleChecker+Unchecked, 186.84ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:40,502 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [78 Valid, 16 Invalid, 296 Unknown, 0 Unchecked, 1.96ms Time], IncrementalHoareTripleChecker [9 Valid, 231 Invalid, 0 Unknown, 56 Unchecked, 186.84ms Time] [2021-08-30 17:54:40,503 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-30 17:54:40,506 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2021-08-30 17:54:40,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.3035714285714286) internal successors, (73), 64 states have internal predecessors, (73), 12 states have call successors, (12), 12 states have call predecessors, (12), 14 states have return successors, (14), 14 states have call predecessors, (14), 11 states have call successors, (14) [2021-08-30 17:54:40,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 99 transitions. [2021-08-30 17:54:40,507 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 99 transitions. Word has length 23 [2021-08-30 17:54:40,507 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:40,507 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 99 transitions. [2021-08-30 17:54:40,507 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 3.111111111111111) internal successors, (28), 8 states have internal predecessors, (28), 4 states have call successors, (11), 3 states have call predecessors, (11), 5 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-08-30 17:54:40,507 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 99 transitions. [2021-08-30 17:54:40,508 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:40,508 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:40,508 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:40,520 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:40,708 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,708 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:40,709 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:40,709 INFO L82 PathProgramCache]: Analyzing trace with hash -2020382166, now seen corresponding path program 1 times [2021-08-30 17:54:40,709 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:40,709 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1238144481] [2021-08-30 17:54:40,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:40,709 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:40,709 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:40,710 INFO L229 MonitoredProcess]: Starting monitored process 7 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:40,711 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-30 17:54:40,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:40,812 INFO L263 TraceCheckSpWp]: Trace formula consists of 111 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-30 17:54:40,813 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:40,830 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:54:40,887 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,888 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:40,953 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:40,953 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:40,953 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1238144481] [2021-08-30 17:54:40,953 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1238144481] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:40,953 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:40,953 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 5 [2021-08-30 17:54:40,953 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1035412315] [2021-08-30 17:54:40,954 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-30 17:54:40,954 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:40,954 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-30 17:54:40,954 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:40,954 INFO L87 Difference]: Start difference. First operand 88 states and 99 transitions. Second operand has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:41,083 INFO L93 Difference]: Finished difference Result 90 states and 98 transitions. [2021-08-30 17:54:41,083 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-30 17:54:41,084 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-08-30 17:54:41,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:41,084 INFO L225 Difference]: With dead ends: 90 [2021-08-30 17:54:41,085 INFO L226 Difference]: Without dead ends: 90 [2021-08-30 17:54:41,085 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 41 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 4 ImplicationChecksByTransitivity, 18.91ms TimeCoverageRelationStatistics Valid=12, Invalid=18, Unknown=0, NotChecked=0, Total=30 [2021-08-30 17:54:41,085 INFO L928 BasicCegarLoop]: 17 mSDtfsCounter, 15 mSDsluCounter, 95 mSDsCounter, 0 mSdLazyCounter, 107 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 96.67ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 16 SdHoareTripleChecker+Valid, 43 SdHoareTripleChecker+Invalid, 149 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.21ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 107 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 42 IncrementalHoareTripleChecker+Unchecked, 117.25ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:41,086 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [16 Valid, 43 Invalid, 149 Unknown, 0 Unchecked, 1.21ms Time], IncrementalHoareTripleChecker [0 Valid, 107 Invalid, 0 Unknown, 42 Unchecked, 117.25ms Time] [2021-08-30 17:54:41,086 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 90 states. [2021-08-30 17:54:41,089 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 90 to 88. [2021-08-30 17:54:41,090 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 88 states, 56 states have (on average 1.2857142857142858) internal successors, (72), 64 states have internal predecessors, (72), 12 states have call successors, (12), 12 states have call predecessors, (12), 14 states have return successors, (14), 14 states have call predecessors, (14), 11 states have call successors, (14) [2021-08-30 17:54:41,090 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 88 states to 88 states and 98 transitions. [2021-08-30 17:54:41,090 INFO L78 Accepts]: Start accepts. Automaton has 88 states and 98 transitions. Word has length 24 [2021-08-30 17:54:41,091 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:41,091 INFO L470 AbstractCegarLoop]: Abstraction has 88 states and 98 transitions. [2021-08-30 17:54:41,091 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 3.4) internal successors, (17), 5 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,091 INFO L276 IsEmpty]: Start isEmpty. Operand 88 states and 98 transitions. [2021-08-30 17:54:41,091 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 25 [2021-08-30 17:54:41,091 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:41,092 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:41,108 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:41,298 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,298 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:41,299 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:41,299 INFO L82 PathProgramCache]: Analyzing trace with hash 1769026505, now seen corresponding path program 1 times [2021-08-30 17:54:41,299 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:41,299 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1093886748] [2021-08-30 17:54:41,299 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:41,299 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,299 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:41,300 INFO L229 MonitoredProcess]: Starting monitored process 8 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:41,300 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-30 17:54:41,390 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:41,392 INFO L263 TraceCheckSpWp]: Trace formula consists of 107 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-30 17:54:41,393 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,454 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,454 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:41,527 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:41,527 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:41,527 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1093886748] [2021-08-30 17:54:41,527 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1093886748] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:41,527 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:41,528 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-30 17:54:41,528 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [260708396] [2021-08-30 17:54:41,528 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-30 17:54:41,528 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:41,528 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-30 17:54:41,529 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:41,529 INFO L87 Difference]: Start difference. First operand 88 states and 98 transitions. Second operand has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,614 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:41,614 INFO L93 Difference]: Finished difference Result 62 states and 66 transitions. [2021-08-30 17:54:41,615 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-30 17:54:41,615 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 24 [2021-08-30 17:54:41,615 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:41,615 INFO L225 Difference]: With dead ends: 62 [2021-08-30 17:54:41,615 INFO L226 Difference]: Without dead ends: 58 [2021-08-30 17:54:41,616 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 14.59ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-30 17:54:41,616 INFO L928 BasicCegarLoop]: 16 mSDtfsCounter, 0 mSDsluCounter, 151 mSDsCounter, 0 mSdLazyCounter, 153 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 66.72ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 63 SdHoareTripleChecker+Invalid, 153 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.96ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 153 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 81.21ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:41,616 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [0 Valid, 63 Invalid, 153 Unknown, 0 Unchecked, 0.96ms Time], IncrementalHoareTripleChecker [0 Valid, 153 Invalid, 0 Unknown, 0 Unchecked, 81.21ms Time] [2021-08-30 17:54:41,617 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-30 17:54:41,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 58. [2021-08-30 17:54:41,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 35 states have (on average 1.2571428571428571) internal successors, (44), 41 states have internal predecessors, (44), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-30 17:54:41,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 62 transitions. [2021-08-30 17:54:41,620 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 62 transitions. Word has length 24 [2021-08-30 17:54:41,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:41,620 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 62 transitions. [2021-08-30 17:54:41,620 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 3.4) internal successors, (17), 4 states have internal predecessors, (17), 2 states have call successors, (7), 2 states have call predecessors, (7), 3 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-30 17:54:41,620 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 62 transitions. [2021-08-30 17:54:41,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:41,621 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:41,621 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:41,632 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:41,821 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,822 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting probe1_6Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:41,822 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:41,822 INFO L82 PathProgramCache]: Analyzing trace with hash -292940866, now seen corresponding path program 1 times [2021-08-30 17:54:41,822 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:41,822 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [385356374] [2021-08-30 17:54:41,822 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:41,822 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:41,823 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:41,823 INFO L229 MonitoredProcess]: Starting monitored process 9 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:41,824 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-30 17:54:41,910 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:41,912 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:54:41,913 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:41,942 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:41,942 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:42,048 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-30 17:54:42,048 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-08-30 17:54:42,132 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:42,133 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:42,260 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:42,261 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:42,261 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [385356374] [2021-08-30 17:54:42,261 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [385356374] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:42,261 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:42,261 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 5] imperfect sequences [] total 8 [2021-08-30 17:54:42,261 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [837074278] [2021-08-30 17:54:42,261 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-08-30 17:54:42,261 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:42,261 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-08-30 17:54:42,261 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2021-08-30 17:54:42,261 INFO L87 Difference]: Start difference. First operand 58 states and 62 transitions. Second operand has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:42,374 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:42,375 INFO L93 Difference]: Finished difference Result 57 states and 61 transitions. [2021-08-30 17:54:42,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-30 17:54:42,375 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 28 [2021-08-30 17:54:42,375 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:42,376 INFO L225 Difference]: With dead ends: 57 [2021-08-30 17:54:42,376 INFO L226 Difference]: Without dead ends: 57 [2021-08-30 17:54:42,376 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 38 SyntacticMatches, 10 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 16 ImplicationChecksByTransitivity, 119.74ms TimeCoverageRelationStatistics Valid=53, Invalid=103, Unknown=0, NotChecked=0, Total=156 [2021-08-30 17:54:42,376 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 27 mSDsluCounter, 66 mSDsCounter, 0 mSdLazyCounter, 97 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 54.69ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 27 SdHoareTripleChecker+Valid, 16 SdHoareTripleChecker+Invalid, 151 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.75ms SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 97 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 47 IncrementalHoareTripleChecker+Unchecked, 77.12ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:42,376 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [27 Valid, 16 Invalid, 151 Unknown, 0 Unchecked, 0.75ms Time], IncrementalHoareTripleChecker [7 Valid, 97 Invalid, 0 Unknown, 47 Unchecked, 77.12ms Time] [2021-08-30 17:54:42,377 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-08-30 17:54:42,378 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 57. [2021-08-30 17:54:42,379 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 35 states have (on average 1.2285714285714286) internal successors, (43), 40 states have internal predecessors, (43), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-30 17:54:42,379 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 61 transitions. [2021-08-30 17:54:42,379 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 61 transitions. Word has length 28 [2021-08-30 17:54:42,379 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:42,379 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 61 transitions. [2021-08-30 17:54:42,379 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.0) internal successors, (24), 8 states have internal predecessors, (24), 3 states have call successors, (10), 6 states have call predecessors, (10), 5 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:54:42,379 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 61 transitions. [2021-08-30 17:54:42,380 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-08-30 17:54:42,380 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:42,380 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:42,389 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:42,580 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,580 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting probe1_6Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:42,581 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:42,581 INFO L82 PathProgramCache]: Analyzing trace with hash -292940865, now seen corresponding path program 1 times [2021-08-30 17:54:42,581 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:42,581 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431842581] [2021-08-30 17:54:42,581 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:42,581 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:42,581 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:42,582 INFO L229 MonitoredProcess]: Starting monitored process 10 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:42,584 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-30 17:54:42,669 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:42,671 INFO L263 TraceCheckSpWp]: Trace formula consists of 116 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-30 17:54:42,672 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:42,684 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:42,685 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:46,832 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:54:46,832 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:54:46,936 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:46,936 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:48,119 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:48,120 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:48,120 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431842581] [2021-08-30 17:54:48,120 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431842581] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:48,120 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:48,120 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 7] imperfect sequences [] total 14 [2021-08-30 17:54:48,120 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [627295111] [2021-08-30 17:54:48,120 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 15 states [2021-08-30 17:54:48,121 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:48,121 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 15 interpolants. [2021-08-30 17:54:48,121 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=167, Unknown=2, NotChecked=0, Total=210 [2021-08-30 17:54:48,121 INFO L87 Difference]: Start difference. First operand 57 states and 61 transitions. Second operand has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,357 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:48,357 INFO L93 Difference]: Finished difference Result 56 states and 60 transitions. [2021-08-30 17:54:48,358 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:54:48,358 INFO L78 Accepts]: Start accepts. Automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) Word has length 28 [2021-08-30 17:54:48,358 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:48,358 INFO L225 Difference]: With dead ends: 56 [2021-08-30 17:54:48,358 INFO L226 Difference]: Without dead ends: 56 [2021-08-30 17:54:48,359 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 38 SyntacticMatches, 5 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 60 ImplicationChecksByTransitivity, 4826.00ms TimeCoverageRelationStatistics Valid=91, Invalid=287, Unknown=2, NotChecked=0, Total=380 [2021-08-30 17:54:48,359 INFO L928 BasicCegarLoop]: 12 mSDtfsCounter, 44 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 105.03ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 44 SdHoareTripleChecker+Valid, 31 SdHoareTripleChecker+Invalid, 340 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.42ms SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 166 IncrementalHoareTripleChecker+Unchecked, 132.04ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:48,359 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [44 Valid, 31 Invalid, 340 Unknown, 0 Unchecked, 1.42ms Time], IncrementalHoareTripleChecker [10 Valid, 164 Invalid, 0 Unknown, 166 Unchecked, 132.04ms Time] [2021-08-30 17:54:48,360 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-08-30 17:54:48,361 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 56. [2021-08-30 17:54:48,362 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.2) internal successors, (42), 39 states have internal predecessors, (42), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-30 17:54:48,362 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-08-30 17:54:48,362 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 28 [2021-08-30 17:54:48,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:48,362 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-08-30 17:54:48,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 15 states, 13 states have (on average 2.6153846153846154) internal successors, (34), 12 states have internal predecessors, (34), 6 states have call successors, (13), 8 states have call predecessors, (13), 6 states have return successors, (8), 4 states have call predecessors, (8), 4 states have call successors, (8) [2021-08-30 17:54:48,363 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-08-30 17:54:48,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:48,363 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:48,363 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:48,372 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:48,574 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:48,574 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:48,575 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:48,575 INFO L82 PathProgramCache]: Analyzing trace with hash 2144040275, now seen corresponding path program 1 times [2021-08-30 17:54:48,575 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:48,575 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1277276603] [2021-08-30 17:54:48,575 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:48,575 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:48,575 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:48,580 INFO L229 MonitoredProcess]: Starting monitored process 11 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:48,583 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-30 17:54:48,668 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:48,670 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:54:48,671 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:48,694 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:54:48,694 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:54:48,749 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 5 [2021-08-30 17:54:48,810 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-08-30 17:54:48,914 INFO L354 Elim1Store]: treesize reduction 20, result has 28.6 percent of original size [2021-08-30 17:54:48,915 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 2 case distinctions, treesize of input 25 treesize of output 28 [2021-08-30 17:54:48,943 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:48,943 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:54:49,156 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 9 treesize of output 7 [2021-08-30 17:54:49,227 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:54:49,227 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:54:49,227 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1277276603] [2021-08-30 17:54:49,228 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1277276603] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:54:49,228 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:54:49,228 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 6] imperfect sequences [] total 13 [2021-08-30 17:54:49,228 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [840993516] [2021-08-30 17:54:49,228 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:54:49,228 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:54:49,228 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:54:49,228 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=45, Invalid=137, Unknown=0, NotChecked=0, Total=182 [2021-08-30 17:54:49,228 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:54:59,577 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:54:59,578 INFO L93 Difference]: Finished difference Result 58 states and 64 transitions. [2021-08-30 17:54:59,578 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 12 states. [2021-08-30 17:54:59,578 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) Word has length 29 [2021-08-30 17:54:59,578 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:54:59,579 INFO L225 Difference]: With dead ends: 58 [2021-08-30 17:54:59,579 INFO L226 Difference]: Without dead ends: 58 [2021-08-30 17:54:59,579 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 41 SyntacticMatches, 7 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 10266.81ms TimeCoverageRelationStatistics Valid=86, Invalid=289, Unknown=5, NotChecked=0, Total=380 [2021-08-30 17:54:59,580 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 36 mSDsluCounter, 85 mSDsCounter, 0 mSdLazyCounter, 289 mSolverCounterSat, 23 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 184.62ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 18 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.85ms SdHoareTripleChecker+Time, 23 IncrementalHoareTripleChecker+Valid, 289 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 77 IncrementalHoareTripleChecker+Unchecked, 223.50ms IncrementalHoareTripleChecker+Time [2021-08-30 17:54:59,580 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [36 Valid, 18 Invalid, 389 Unknown, 0 Unchecked, 1.85ms Time], IncrementalHoareTripleChecker [23 Valid, 289 Invalid, 0 Unknown, 77 Unchecked, 223.50ms Time] [2021-08-30 17:54:59,580 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 58 states. [2021-08-30 17:54:59,582 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 58 to 56. [2021-08-30 17:54:59,582 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 56 states, 35 states have (on average 1.2) internal successors, (42), 38 states have internal predecessors, (42), 9 states have call successors, (9), 9 states have call predecessors, (9), 9 states have return successors, (9), 9 states have call predecessors, (9), 8 states have call successors, (9) [2021-08-30 17:54:59,582 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 56 states to 56 states and 60 transitions. [2021-08-30 17:54:59,583 INFO L78 Accepts]: Start accepts. Automaton has 56 states and 60 transitions. Word has length 29 [2021-08-30 17:54:59,583 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:54:59,583 INFO L470 AbstractCegarLoop]: Abstraction has 56 states and 60 transitions. [2021-08-30 17:54:59,583 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.769230769230769) internal successors, (36), 12 states have internal predecessors, (36), 6 states have call successors, (9), 5 states have call predecessors, (9), 7 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-30 17:54:59,583 INFO L276 IsEmpty]: Start isEmpty. Operand 56 states and 60 transitions. [2021-08-30 17:54:59,583 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 30 [2021-08-30 17:54:59,584 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:54:59,584 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:54:59,595 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-30 17:54:59,790 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:54:59,790 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:54:59,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:54:59,791 INFO L82 PathProgramCache]: Analyzing trace with hash 2144040276, now seen corresponding path program 1 times [2021-08-30 17:54:59,791 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:54:59,791 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [160253419] [2021-08-30 17:54:59,791 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:54:59,791 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:54:59,792 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:54:59,792 INFO L229 MonitoredProcess]: Starting monitored process 12 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:54:59,793 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-30 17:54:59,877 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:54:59,879 INFO L263 TraceCheckSpWp]: Trace formula consists of 117 conjuncts, 14 conjunts are in the unsatisfiable core [2021-08-30 17:54:59,883 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:54:59,906 INFO L354 Elim1Store]: treesize reduction 11, result has 45.0 percent of original size [2021-08-30 17:54:59,906 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 1 case distinctions, treesize of input 9 treesize of output 15 [2021-08-30 17:54:59,941 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 5 treesize of output 3 [2021-08-30 17:55:04,051 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2021-08-30 17:55:04,134 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-30 17:55:04,134 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 12 treesize of output 14 [2021-08-30 17:55:04,149 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:04,150 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:05,126 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:05,127 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:05,127 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [160253419] [2021-08-30 17:55:05,127 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [160253419] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:55:05,127 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:05,127 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-30 17:55:05,127 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1160770361] [2021-08-30 17:55:05,127 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-30 17:55:05,127 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:55:05,127 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-30 17:55:05,128 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=55, Invalid=124, Unknown=3, NotChecked=0, Total=182 [2021-08-30 17:55:05,128 INFO L87 Difference]: Start difference. First operand 56 states and 60 transitions. Second operand has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:09,308 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:09,309 INFO L93 Difference]: Finished difference Result 74 states and 78 transitions. [2021-08-30 17:55:09,309 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-08-30 17:55:09,309 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) Word has length 29 [2021-08-30 17:55:09,309 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:09,310 INFO L225 Difference]: With dead ends: 74 [2021-08-30 17:55:09,310 INFO L226 Difference]: Without dead ends: 74 [2021-08-30 17:55:09,310 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 4 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 40 ImplicationChecksByTransitivity, 8690.55ms TimeCoverageRelationStatistics Valid=80, Invalid=156, Unknown=4, NotChecked=0, Total=240 [2021-08-30 17:55:09,310 INFO L928 BasicCegarLoop]: 11 mSDtfsCounter, 38 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 77 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 85.45ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 33 SdHoareTripleChecker+Invalid, 279 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.38ms SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 77 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 187 IncrementalHoareTripleChecker+Unchecked, 98.70ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:09,311 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [39 Valid, 33 Invalid, 279 Unknown, 0 Unchecked, 1.38ms Time], IncrementalHoareTripleChecker [15 Valid, 77 Invalid, 0 Unknown, 187 Unchecked, 98.70ms Time] [2021-08-30 17:55:09,311 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2021-08-30 17:55:09,313 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 69. [2021-08-30 17:55:09,313 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.2) internal successors, (54), 48 states have internal predecessors, (54), 10 states have call successors, (10), 10 states have call predecessors, (10), 11 states have return successors, (11), 11 states have call predecessors, (11), 9 states have call successors, (11) [2021-08-30 17:55:09,313 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 75 transitions. [2021-08-30 17:55:09,313 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 75 transitions. Word has length 29 [2021-08-30 17:55:09,314 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:09,314 INFO L470 AbstractCegarLoop]: Abstraction has 69 states and 75 transitions. [2021-08-30 17:55:09,314 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 2.923076923076923) internal successors, (38), 14 states have internal predecessors, (38), 7 states have call successors, (11), 7 states have call predecessors, (11), 8 states have return successors, (8), 5 states have call predecessors, (8), 7 states have call successors, (8) [2021-08-30 17:55:09,314 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 75 transitions. [2021-08-30 17:55:09,314 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 34 [2021-08-30 17:55:09,314 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:09,315 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:55:09,323 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:09,521 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:09,521 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting entry_pointErr0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:55:09,522 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:09,522 INFO L82 PathProgramCache]: Analyzing trace with hash 417037590, now seen corresponding path program 1 times [2021-08-30 17:55:09,522 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:09,522 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [226202053] [2021-08-30 17:55:09,522 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:09,522 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:09,522 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:09,523 INFO L229 MonitoredProcess]: Starting monitored process 13 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:55:09,524 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-30 17:55:09,611 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:09,613 INFO L263 TraceCheckSpWp]: Trace formula consists of 125 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-30 17:55:09,613 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:09,681 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:09,681 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:09,812 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:09,812 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:09,812 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [226202053] [2021-08-30 17:55:09,812 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [226202053] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-30 17:55:09,812 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:09,813 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 10 [2021-08-30 17:55:09,813 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [326450782] [2021-08-30 17:55:09,813 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-30 17:55:09,813 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-30 17:55:09,813 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-30 17:55:09,813 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=69, Unknown=0, NotChecked=0, Total=90 [2021-08-30 17:55:09,813 INFO L87 Difference]: Start difference. First operand 69 states and 75 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:55:09,966 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-30 17:55:09,966 INFO L93 Difference]: Finished difference Result 66 states and 68 transitions. [2021-08-30 17:55:09,966 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-08-30 17:55:09,966 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) Word has length 33 [2021-08-30 17:55:09,966 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-30 17:55:09,967 INFO L225 Difference]: With dead ends: 66 [2021-08-30 17:55:09,967 INFO L226 Difference]: Without dead ends: 66 [2021-08-30 17:55:09,967 INFO L927 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 57 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 75.87ms TimeCoverageRelationStatistics Valid=27, Invalid=83, Unknown=0, NotChecked=0, Total=110 [2021-08-30 17:55:09,967 INFO L928 BasicCegarLoop]: 15 mSDtfsCounter, 13 mSDsluCounter, 260 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 117.88ms Time, 0 mProtectedPredicate, 0 mProtectedAction, 15 SdHoareTripleChecker+Valid, 103 SdHoareTripleChecker+Invalid, 235 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 1.16ms SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 139.63ms IncrementalHoareTripleChecker+Time [2021-08-30 17:55:09,967 INFO L929 BasicCegarLoop]: SdHoareTripleChecker [15 Valid, 103 Invalid, 235 Unknown, 0 Unchecked, 1.16ms Time], IncrementalHoareTripleChecker [4 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 139.63ms Time] [2021-08-30 17:55:09,968 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 66 states. [2021-08-30 17:55:09,969 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 66 to 58. [2021-08-30 17:55:09,969 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 58 states, 39 states have (on average 1.1025641025641026) internal successors, (43), 41 states have internal predecessors, (43), 8 states have call successors, (8), 8 states have call predecessors, (8), 9 states have return successors, (9), 9 states have call predecessors, (9), 7 states have call successors, (9) [2021-08-30 17:55:09,972 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 58 states to 58 states and 60 transitions. [2021-08-30 17:55:09,972 INFO L78 Accepts]: Start accepts. Automaton has 58 states and 60 transitions. Word has length 33 [2021-08-30 17:55:09,972 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-30 17:55:09,972 INFO L470 AbstractCegarLoop]: Abstraction has 58 states and 60 transitions. [2021-08-30 17:55:09,972 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 8 states have internal predecessors, (30), 2 states have call successors, (8), 2 states have call predecessors, (8), 4 states have return successors, (7), 4 states have call predecessors, (7), 2 states have call successors, (7) [2021-08-30 17:55:09,972 INFO L276 IsEmpty]: Start isEmpty. Operand 58 states and 60 transitions. [2021-08-30 17:55:09,973 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-08-30 17:55:09,973 INFO L505 BasicCegarLoop]: Found error trace [2021-08-30 17:55:09,973 INFO L513 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-30 17:55:09,980 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:10,179 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-30 17:55:10,180 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 74 more)] === [2021-08-30 17:55:10,180 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-30 17:55:10,180 INFO L82 PathProgramCache]: Analyzing trace with hash -1649451748, now seen corresponding path program 1 times [2021-08-30 17:55:10,180 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-30 17:55:10,180 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [732827032] [2021-08-30 17:55:10,180 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:10,181 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-30 17:55:10,181 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-30 17:55:10,181 INFO L229 MonitoredProcess]: Starting monitored process 14 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-30 17:55:10,182 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-30 17:55:10,274 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:10,276 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 15 conjunts are in the unsatisfiable core [2021-08-30 17:55:10,277 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:10,304 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:10,305 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 2 case distinctions, treesize of input 12 treesize of output 26 [2021-08-30 17:55:10,653 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 20 treesize of output 17 [2021-08-30 17:55:15,057 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:15,058 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:19,190 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-30 17:55:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [732827032] [2021-08-30 17:55:19,191 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:19,191 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1004913824] [2021-08-30 17:55:19,191 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:19,191 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-30 17:55:19,192 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-30 17:55:19,193 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-30 17:55:19,194 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2021-08-30 17:55:19,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:19,367 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 16 conjunts are in the unsatisfiable core [2021-08-30 17:55:19,368 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:19,412 INFO L354 Elim1Store]: treesize reduction 34, result has 38.2 percent of original size [2021-08-30 17:55:19,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 3 case distinctions, treesize of input 28 treesize of output 39 [2021-08-30 17:55:19,750 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 17 treesize of output 14 [2021-08-30 17:55:24,117 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:24,117 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:28,222 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:28,223 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [213722947] [2021-08-30 17:55:28,223 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-30 17:55:28,223 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:28,223 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-30 17:55:28,232 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-30 17:55:28,260 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Waiting until timeout for monitored process [2021-08-30 17:55:28,341 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-30 17:55:28,343 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-30 17:55:28,344 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-30 17:55:28,412 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 18 treesize of output 15 [2021-08-30 17:55:30,714 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-30 17:55:30,714 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-30 17:55:34,818 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-30 17:55:34,819 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-30 17:55:34,819 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-30 17:55:34,819 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-30 17:55:34,819 INFO L627 BasicCegarLoop]: Counterexample might be feasible [2021-08-30 17:55:34,822 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK (77 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION (76 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION (75 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION (74 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION (73 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION (72 of 78 remaining) [2021-08-30 17:55:34,823 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION (71 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION (70 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION (69 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (68 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (67 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (66 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (65 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (64 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (63 of 78 remaining) [2021-08-30 17:55:34,824 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (62 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (61 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (60 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (59 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (58 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (57 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION (56 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION (55 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION (54 of 78 remaining) [2021-08-30 17:55:34,825 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION (53 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION (52 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION (51 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION (50 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION (49 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION (48 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION (47 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (46 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (45 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION (44 of 78 remaining) [2021-08-30 17:55:34,826 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION (43 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION (42 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION (41 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION (40 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION (39 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION (38 of 78 remaining) [2021-08-30 17:55:34,827 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION (37 of 78 remaining) [2021-08-30 17:55:34,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION (36 of 78 remaining) [2021-08-30 17:55:34,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION (35 of 78 remaining) [2021-08-30 17:55:34,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE (34 of 78 remaining) [2021-08-30 17:55:34,837 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE (33 of 78 remaining) [2021-08-30 17:55:34,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE (32 of 78 remaining) [2021-08-30 17:55:34,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE (31 of 78 remaining) [2021-08-30 17:55:34,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE (30 of 78 remaining) [2021-08-30 17:55:34,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE (29 of 78 remaining) [2021-08-30 17:55:34,838 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION (28 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION (27 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION (26 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION (25 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION (24 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION (23 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION (22 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION (21 of 78 remaining) [2021-08-30 17:55:34,839 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE (20 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE (19 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE (18 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE (17 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE (16 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE (15 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION (14 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION (13 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION (12 of 78 remaining) [2021-08-30 17:55:34,840 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION (11 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION (10 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION (9 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION (8 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION (7 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION (6 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION (5 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err0REQUIRES_VIOLATION (4 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err1REQUIRES_VIOLATION (3 of 78 remaining) [2021-08-30 17:55:34,841 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err2ASSERT_VIOLATIONMEMORY_FREE (2 of 78 remaining) [2021-08-30 17:55:34,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err3ASSERT_VIOLATIONMEMORY_FREE (1 of 78 remaining) [2021-08-30 17:55:34,842 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location probe1_6Err4ASSERT_VIOLATIONMEMORY_FREE (0 of 78 remaining) [2021-08-30 17:55:34,848 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:35,052 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Ended with exit code 0 [2021-08-30 17:55:35,263 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (16)] Forceful destruction successful, exit code 0 [2021-08-30 17:55:35,446 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-30 17:55:35,460 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-30 17:55:35,462 WARN L418 cessorBacktranslator]: Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) [2021-08-30 17:55:35,468 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 30.08 05:55:35 BoogieIcfgContainer [2021-08-30 17:55:35,468 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-30 17:55:35,469 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-30 17:55:35,469 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-30 17:55:35,469 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-30 17:55:35,469 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 30.08 05:54:36" (3/4) ... [2021-08-30 17:55:35,471 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-30 17:55:35,471 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-30 17:55:35,472 INFO L158 Benchmark]: Toolchain (without parser) took 59984.53ms. Allocated memory was 71.3MB in the beginning and 125.8MB in the end (delta: 54.5MB). Free memory was 51.9MB in the beginning and 93.5MB in the end (delta: -41.6MB). Peak memory consumption was 13.9MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,472 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 71.3MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 94.6kB). There was no memory consumed. Max. memory is 16.1GB. [2021-08-30 17:55:35,473 INFO L158 Benchmark]: CACSL2BoogieTranslator took 440.57ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 35.2MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,473 INFO L158 Benchmark]: Boogie Preprocessor took 82.79ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 51.0MB in the end (delta: -15.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,473 INFO L158 Benchmark]: RCFGBuilder took 554.66ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 51.0MB in the beginning and 68.9MB in the end (delta: -17.9MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,474 INFO L158 Benchmark]: TraceAbstraction took 58899.14ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 94.6MB in the end (delta: -26.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,474 INFO L158 Benchmark]: Witness Printer took 2.54ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-08-30 17:55:35,476 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 71.3MB. Free memory was 52.3MB in the beginning and 52.2MB in the end (delta: 94.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 440.57ms. Allocated memory is still 71.3MB. Free memory was 51.6MB in the beginning and 35.2MB in the end (delta: 16.4MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Preprocessor took 82.79ms. Allocated memory is still 71.3MB. Free memory was 35.2MB in the beginning and 51.0MB in the end (delta: -15.8MB). Peak memory consumption was 8.7MB. Max. memory is 16.1GB. * RCFGBuilder took 554.66ms. Allocated memory was 71.3MB in the beginning and 104.9MB in the end (delta: 33.6MB). Free memory was 51.0MB in the beginning and 68.9MB in the end (delta: -17.9MB). Peak memory consumption was 25.4MB. Max. memory is 16.1GB. * TraceAbstraction took 58899.14ms. Allocated memory was 104.9MB in the beginning and 125.8MB in the end (delta: 21.0MB). Free memory was 68.4MB in the beginning and 94.6MB in the end (delta: -26.2MB). Peak memory consumption was 62.4MB. Max. memory is 16.1GB. * Witness Printer took 2.54ms. Allocated memory is still 125.8MB. Free memory was 94.6MB in the beginning and 93.5MB in the end (delta: 1.1MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.boogie.preprocessor: - GenericResult: Unfinished Backtranslation Generated EnsuresSpecification ensures #valid == old(#valid); is not ensure(true) * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.00ms ErrorAutomatonConstructionTimeTotal, 0.00ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.00ms ErrorAutomatonConstructionTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeAvg, 0.00ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 790]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: unable to decide satisfiability of path constraint, overapproximation of memtrack at line 790. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L782] struct A a6; [L791] CALL entry_point() [L784] CALL, EXPR probe1_6(&a6) [L764] int ret = - -3; [L765] CALL, EXPR ldv_malloc(sizeof(int)) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L765] RET, EXPR ldv_malloc(sizeof(int)) [L765] int *p = (int *)ldv_malloc(sizeof(int)); [L766] COND FALSE !(p==0) [L768] CALL, EXPR f6() [L758] return __VERIFIER_nondet_int(); [L768] RET, EXPR f6() [L768] ret = f6() [L769] COND TRUE ret<0 [L777] free(p) [L777] free(p) [L777] free(p) [L778] return ret; [L784] RET, EXPR probe1_6(&a6) [L784] int ret = probe1_6(&a6); [L785] COND FALSE !(ret==0) [L788] a6.p = 0 [L791] RET entry_point() - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 578]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 682]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 658]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 660]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 623]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 554]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 555]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 666]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 668]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 607]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 619]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 593]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 594]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 587]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 588]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 699]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 700]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 702]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 744]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 567]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 563]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 788]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 774]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - UnprovableResult [Line: 777]: Unable to prove that free always succeeds Unable to prove that free always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 51 procedures, 365 locations, 78 error locations. Started 1 CEGAR loops. OverallTime: 58835.28ms, OverallIterations: 13, TraceHistogramMax: 1, EmptinessCheckTime: 15.31ms, AutomataDifference: 16260.15ms, DeadEndRemovalTime: 0.00ms, HoareAnnotationTime: 0.00ms, InitialAbstractionConstructionTime: 9.72ms, PartialOrderReductionTime: 0.00ms, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 496 SdHoareTripleChecker+Valid, 1676.75ms IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 480 mSDsluCounter, 487 SdHoareTripleChecker+Invalid, 1352.98ms Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 575 IncrementalHoareTripleChecker+Unchecked, 1485 mSDsCounter, 137 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1981 IncrementalHoareTripleChecker+Invalid, 2693 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 137 mSolverCounterUnsat, 169 mSDtfsCounter, 1981 mSolverCounterSat, 24.60ms SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 614 GetRequests, 479 SyntacticMatches, 35 SemanticMatches, 100 ConstructedPredicates, 0 IntricatePredicates, 1 DeprecatedPredicates, 199 ImplicationChecksByTransitivity, 24195.65ms Time, 0.00ms BasicInterpolantAutomatonTime, BiggestAbstraction: size=125occurred in iteration=0, InterpolantAutomatonStates: 94, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.00ms DumpTime, AutomataMinimizationStatistics: 73.15ms AutomataMinimizationTime, 12 MinimizatonAttempts, 56 StatesRemovedByMinimization, 8 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 87.87ms SsaConstructionTime, 203.66ms SatisfiabilityAnalysisTime, 13460.61ms InterpolantComputationTime, 300 NumberOfCodeBlocks, 300 NumberOfCodeBlocksAsserted, 12 NumberOfCheckSat, 576 ConstructedInterpolants, 81 QuantifiedInterpolants, 4106 SizeOfPredicates, 37 NumberOfNonLiveVariables, 1336 ConjunctsInSsa, 111 ConjunctsInUnsatCore, 24 InterpolantComputations, 24 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-08-30 17:55:35,526 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...