./Ultimate.py --spec ../sv-benchmarks/c/properties/valid-memsafety.prp --file ../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 20ed64ec 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_test17_1-1.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 9de0b0c743a2720b24a0366af33371eca52f31f7 ................................................................................................................................... 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_test17_1-1.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 9de0b0c743a2720b24a0366af33371eca52f31f7 ..................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................... Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN --- Real Ultimate output --- This is Ultimate 0.2.1-dev-20ed64e [2021-08-27 06:11:22,022 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:11:22,024 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:11:22,056 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:11:22,056 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:11:22,059 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:11:22,060 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:11:22,064 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:11:22,065 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:11:22,068 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:11:22,069 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:11:22,072 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:11:22,072 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:11:22,074 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:11:22,075 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:11:22,078 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:11:22,079 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:11:22,079 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:11:22,082 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:11:22,087 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:11:22,088 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:11:22,089 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:11:22,090 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:11:22,091 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:11:22,101 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:11:22,102 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:11:22,102 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:11:22,103 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:11:22,104 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:11:22,104 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:11:22,104 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:11:22,105 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:11:22,106 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:11:22,106 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:11:22,107 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:11:22,107 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:11:22,108 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:11:22,108 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:11:22,108 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:11:22,109 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:11:22,110 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:11:22,113 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-08-27 06:11:22,134 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:11:22,135 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:11:22,135 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:11:22,136 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:11:22,137 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:11:22,137 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:11:22,137 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:11:22,138 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:11:22,138 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:11:22,138 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:11:22,139 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:11:22,140 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:11:22,140 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:22,141 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:11:22,141 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:11:22,141 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-08-27 06:11:22,141 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-08-27 06:11:22,141 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:11:22,141 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9de0b0c743a2720b24a0366af33371eca52f31f7 [2021-08-27 06:11:22,359 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:11:22,377 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:11:22,378 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:11:22,380 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:11:22,380 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:11:22,381 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-08-27 06:11:22,430 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977616042/9d948a0b3e254073aff91584972a5cbe/FLAG22235c32e [2021-08-27 06:11:22,867 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:11:22,867 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-08-27 06:11:22,879 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977616042/9d948a0b3e254073aff91584972a5cbe/FLAG22235c32e [2021-08-27 06:11:22,891 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/977616042/9d948a0b3e254073aff91584972a5cbe [2021-08-27 06:11:22,894 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:11:22,895 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:11:22,897 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:22,897 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:11:22,900 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:11:22,900 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:22" (1/1) ... [2021-08-27 06:11:22,901 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@5b6cb2ea and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:22, skipping insertion in model container [2021-08-27 06:11:22,901 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:22" (1/1) ... [2021-08-27 06:11:22,906 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:11:22,946 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:23,217 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:23,234 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) [2021-08-27 06:11:23,234 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@691bade0 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:23, skipping insertion in model container [2021-08-27 06:11:23,234 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:23,235 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.preprocessor [2021-08-27 06:11:23,237 INFO L168 Benchmark]: Toolchain (without parser) took 340.99 ms. Allocated memory is still 58.7 MB. Free memory was 35.6 MB in the beginning and 38.2 MB in the end (delta: -2.6 MB). Peak memory consumption was 9.8 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:23,238 INFO L168 Benchmark]: CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:11:23,239 INFO L168 Benchmark]: CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 38.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. [2021-08-27 06:11:23,240 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.15 ms. Allocated memory is still 58.7 MB. Free memory was 39.5 MB in the beginning and 39.4 MB in the end (delta: 42.6 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 337.92 ms. Allocated memory is still 58.7 MB. Free memory was 35.4 MB in the beginning and 38.2 MB in the end (delta: -2.8 MB). Peak memory consumption was 7.7 MB. Max. memory is 16.1 GB. * 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-dev-20ed64e [2021-08-27 06:11:24,553 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-08-27 06:11:24,555 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-08-27 06:11:24,585 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-08-27 06:11:24,586 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-08-27 06:11:24,589 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-08-27 06:11:24,590 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-08-27 06:11:24,601 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-08-27 06:11:24,603 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-08-27 06:11:24,606 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-08-27 06:11:24,607 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-08-27 06:11:24,610 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-08-27 06:11:24,610 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-08-27 06:11:24,612 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-08-27 06:11:24,613 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-08-27 06:11:24,616 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-08-27 06:11:24,617 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-08-27 06:11:24,617 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-08-27 06:11:24,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-08-27 06:11:24,623 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-08-27 06:11:24,624 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-08-27 06:11:24,625 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-08-27 06:11:24,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-08-27 06:11:24,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-08-27 06:11:24,635 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-08-27 06:11:24,635 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-08-27 06:11:24,635 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-08-27 06:11:24,637 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-08-27 06:11:24,637 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-08-27 06:11:24,637 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-08-27 06:11:24,638 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-08-27 06:11:24,638 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-08-27 06:11:24,639 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-08-27 06:11:24,640 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-08-27 06:11:24,641 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-08-27 06:11:24,641 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-08-27 06:11:24,642 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-08-27 06:11:24,642 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-08-27 06:11:24,642 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-08-27 06:11:24,643 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-08-27 06:11:24,644 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-08-27 06:11:24,647 INFO L101 SettingsManager]: Beginning loading settings from /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-08-27 06:11:24,673 INFO L113 SettingsManager]: Loading preferences was successful [2021-08-27 06:11:24,674 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-08-27 06:11:24,674 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-08-27 06:11:24,675 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-08-27 06:11:24,676 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-08-27 06:11:24,676 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-08-27 06:11:24,676 INFO L138 SettingsManager]: * Use SBE=true [2021-08-27 06:11:24,676 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-08-27 06:11:24,676 INFO L138 SettingsManager]: * sizeof long=4 [2021-08-27 06:11:24,677 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-08-27 06:11:24,677 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-08-27 06:11:24,677 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-08-27 06:11:24,677 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-08-27 06:11:24,678 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * sizeof long double=12 [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * Use constant arrays=true [2021-08-27 06:11:24,679 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-08-27 06:11:24,679 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:24,680 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-08-27 06:11:24,680 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-08-27 06:11:24,680 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-08-27 06:11:24,680 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-08-27 06:11:24,680 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-08-27 06:11:24,680 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-08-27 06:11:24,681 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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 9de0b0c743a2720b24a0366af33371eca52f31f7 [2021-08-27 06:11:24,932 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-08-27 06:11:24,952 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-08-27 06:11:24,954 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-08-27 06:11:24,955 INFO L271 PluginConnector]: Initializing CDTParser... [2021-08-27 06:11:24,956 INFO L275 PluginConnector]: CDTParser initialized [2021-08-27 06:11:24,958 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-08-27 06:11:25,003 INFO L220 CDTParser]: Created temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61d40a19/9b9bc09a7f7a40dcaa601d99e12970a0/FLAGc6fa1222a [2021-08-27 06:11:25,384 INFO L306 CDTParser]: Found 1 translation units. [2021-08-27 06:11:25,384 INFO L160 CDTParser]: Scanning /storage/repos/ultimate/releaseScripts/default/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2021-08-27 06:11:25,397 INFO L349 CDTParser]: About to delete temporary CDT project at /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61d40a19/9b9bc09a7f7a40dcaa601d99e12970a0/FLAGc6fa1222a [2021-08-27 06:11:25,773 INFO L357 CDTParser]: Successfully deleted /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/data/f61d40a19/9b9bc09a7f7a40dcaa601d99e12970a0 [2021-08-27 06:11:25,774 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-08-27 06:11:25,775 INFO L131 ToolchainWalker]: Walking toolchain with 5 elements. [2021-08-27 06:11:25,777 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:25,778 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-08-27 06:11:25,781 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-08-27 06:11:25,783 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:25" (1/1) ... [2021-08-27 06:11:25,783 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1d8b1a54 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:25, skipping insertion in model container [2021-08-27 06:11:25,784 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 27.08 06:11:25" (1/1) ... [2021-08-27 06:11:25,788 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-08-27 06:11:25,824 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:26,081 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:26,091 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-08-27 06:11:26,096 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-08-27 06:11:26,120 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:26,136 INFO L203 MainTranslator]: Completed pre-run [2021-08-27 06:11:26,188 INFO L206 PostProcessor]: Analyzing one entry point: main [2021-08-27 06:11:26,233 INFO L208 MainTranslator]: Completed translation [2021-08-27 06:11:26,233 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26 WrapperNode [2021-08-27 06:11:26,233 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-08-27 06:11:26,234 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-08-27 06:11:26,234 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-08-27 06:11:26,234 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-08-27 06:11:26,243 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,243 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,276 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,276 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,323 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,329 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,334 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,344 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-08-27 06:11:26,345 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-08-27 06:11:26,345 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-08-27 06:11:26,345 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-08-27 06:11:26,346 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (1/1) ... [2021-08-27 06:11:26,350 INFO L170 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-08-27 06:11:26,357 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:11:26,366 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) [2021-08-27 06:11:26,373 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 [2021-08-27 06:11:26,395 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.init [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_32 [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __bswap_64 [2021-08-27 06:11:26,396 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint16_identity [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint32_identity [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure __uint64_identity [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_nonpositive [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_positive [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_zalloc [2021-08-27 06:11:26,397 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_del [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add_tail [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_del [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_alloc [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_fill [2021-08-27 06:11:26,398 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_msg_free [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_submit_msg [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_destroy_msgs [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_get_drvdata [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_dev_set_drvdata [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_add_return [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_atomic_sub_return [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_sub [2021-08-27 06:11:26,399 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_init [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_get [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kref_put [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_del [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_cleanup [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_release [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_get [2021-08-27 06:11:26,400 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init_internal [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_init [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_create [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure f [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure g [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure alloc_17 [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure free_17 [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure entry_point [2021-08-27 06:11:26,401 INFO L138 BoogieDeclarations]: Found implementation of procedure main [2021-08-27 06:11:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memset [2021-08-27 06:11:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.meminit [2021-08-27 06:11:26,402 INFO L138 BoogieDeclarations]: Found implementation of procedure #Ultimate.C_memcpy [2021-08-27 06:11:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure __ctype_get_mb_cur_max [2021-08-27 06:11:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure atof [2021-08-27 06:11:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure atoi [2021-08-27 06:11:26,402 INFO L130 BoogieDeclarations]: Found specification of procedure atol [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure atoll [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtod [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtof [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtold [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtol [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoul [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtoq [2021-08-27 06:11:26,403 INFO L130 BoogieDeclarations]: Found specification of procedure strtouq [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoll [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure strtoull [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure l64a [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure a64l [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_32 [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure __bswap_64 [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint16_identity [2021-08-27 06:11:26,404 INFO L130 BoogieDeclarations]: Found specification of procedure __uint32_identity [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure __uint64_identity [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure select [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure pselect [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_major [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_minor [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure gnu_dev_makedev [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure random [2021-08-27 06:11:26,405 INFO L130 BoogieDeclarations]: Found specification of procedure srandom [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure random_r [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure srandom_r [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure initstate_r [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure setstate_r [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure rand [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure srand [2021-08-27 06:11:26,406 INFO L130 BoogieDeclarations]: Found specification of procedure rand_r [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure drand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure erand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure srand48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure seed48 [2021-08-27 06:11:26,407 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48 [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure drand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure erand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure lrand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure nrand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure mrand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure jrand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure srand48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure seed48_r [2021-08-27 06:11:26,408 INFO L130 BoogieDeclarations]: Found specification of procedure lcong48_r [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure malloc [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure calloc [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure realloc [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure free [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure alloca [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure valloc [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure posix_memalign [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure aligned_alloc [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure abort [2021-08-27 06:11:26,409 INFO L130 BoogieDeclarations]: Found specification of procedure atexit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure at_quick_exit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure on_exit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure exit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure quick_exit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure _Exit [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure getenv [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure putenv [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure setenv [2021-08-27 06:11:26,410 INFO L130 BoogieDeclarations]: Found specification of procedure unsetenv [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure clearenv [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure mktemp [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemp [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure mkstemps [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure mkdtemp [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure system [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure realpath [2021-08-27 06:11:26,411 INFO L130 BoogieDeclarations]: Found specification of procedure bsearch [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure qsort [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure abs [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure labs [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure llabs [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure div [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure ldiv [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure lldiv [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt [2021-08-27 06:11:26,412 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure gcvt [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure qgcvt [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure ecvt_r [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure fcvt_r [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure qecvt_r [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure qfcvt_r [2021-08-27 06:11:26,413 INFO L130 BoogieDeclarations]: Found specification of procedure mblen [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbtowc [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure wctomb [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure mbstowcs [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure wcstombs [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure rpmatch [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure getsubopt [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure getloadavg [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure kfree [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure __VERIFIER_nondet_int [2021-08-27 06:11:26,414 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_nonpositive [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_positive [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure memcpy [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure memset [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_zalloc [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.meminit [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-08-27 06:11:26,415 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_del [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add_tail [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_del [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_alloc [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_fill [2021-08-27 06:11:26,416 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memcpy [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_msg_free [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_submit_msg [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_destroy_msgs [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_get_drvdata [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_dev_set_drvdata [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_add_return [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2021-08-27 06:11:26,417 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_atomic_sub_return [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_sub [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ##fun~$Pointer$~TO~VOID [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_init [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_get [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kref_put [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_del [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_cleanup [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_release [2021-08-27 06:11:26,418 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_get [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init_internal [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_init [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_create [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.C_memset [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure f [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure g [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure alloc_17 [2021-08-27 06:11:26,419 INFO L130 BoogieDeclarations]: Found specification of procedure free_17 [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure entry_point [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure main [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.init [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnStack [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.setCurrentRoundingMode [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~intINTTYPE4 [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~intINTTYPE4 [2021-08-27 06:11:26,420 INFO L130 BoogieDeclarations]: Found specification of procedure write~unchecked~$Pointer$ [2021-08-27 06:11:26,421 INFO L130 BoogieDeclarations]: Found specification of procedure read~unchecked~$Pointer$ [2021-08-27 06:11:26,883 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:11:27,076 WARN L805 $ProcedureCfgBuilder]: Label in the middle of a codeblock. [2021-08-27 06:11:27,363 INFO L294 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-08-27 06:11:27,368 INFO L299 CfgBuilder]: Removed 5 assume(true) statements. [2021-08-27 06:11:27,371 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:27 BoogieIcfgContainer [2021-08-27 06:11:27,371 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-08-27 06:11:27,373 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-08-27 06:11:27,373 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-08-27 06:11:27,375 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-08-27 06:11:27,375 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 27.08 06:11:25" (1/3) ... [2021-08-27 06:11:27,376 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b177dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:11:27, skipping insertion in model container [2021-08-27 06:11:27,376 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 27.08 06:11:26" (2/3) ... [2021-08-27 06:11:27,377 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@36b177dc and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 27.08 06:11:27, skipping insertion in model container [2021-08-27 06:11:27,377 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:27" (3/3) ... [2021-08-27 06:11:27,378 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2021-08-27 06:11:27,381 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-08-27 06:11:27,381 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 87 error locations. [2021-08-27 06:11:27,417 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-08-27 06:11:27,421 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 [2021-08-27 06:11:27,421 INFO L340 AbstractCegarLoop]: Starting to check reachability of 87 error locations. [2021-08-27 06:11:27,431 INFO L276 IsEmpty]: Start isEmpty. Operand has 141 states, 80 states have (on average 1.625) internal successors, (130), 115 states have internal predecessors, (130), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) [2021-08-27 06:11:27,441 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:27,442 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:27,442 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:27,443 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:27,446 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:27,446 INFO L82 PathProgramCache]: Analyzing trace with hash -200276895, now seen corresponding path program 1 times [2021-08-27 06:11:27,453 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:27,453 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1780249932] [2021-08-27 06:11:27,453 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:27,454 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:27,454 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:27,455 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) [2021-08-27 06:11:27,483 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-08-27 06:11:27,631 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:27,634 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:27,640 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:27,764 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 [2021-08-27 06:11:27,896 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:27,897 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:28,438 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:28,439 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:28,440 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1780249932] [2021-08-27 06:11:28,440 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1780249932] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:28,440 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:28,444 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7, 7] imperfect sequences [] total 13 [2021-08-27 06:11:28,445 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [914056018] [2021-08-27 06:11:28,450 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-08-27 06:11:28,450 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:28,459 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-08-27 06:11:28,460 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=149, Unknown=0, NotChecked=0, Total=182 [2021-08-27 06:11:28,463 INFO L87 Difference]: Start difference. First operand has 141 states, 80 states have (on average 1.625) internal successors, (130), 115 states have internal predecessors, (130), 14 states have call successors, (14), 12 states have call predecessors, (14), 12 states have return successors, (14), 14 states have call predecessors, (14), 14 states have call successors, (14) Second operand has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:29,108 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:29,109 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-08-27 06:11:29,109 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-08-27 06:11:29,110 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 16 [2021-08-27 06:11:29,110 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:29,116 INFO L225 Difference]: With dead ends: 91 [2021-08-27 06:11:29,116 INFO L226 Difference]: Without dead ends: 88 [2021-08-27 06:11:29,117 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 18 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 487.5ms TimeCoverageRelationStatistics Valid=76, Invalid=304, Unknown=0, NotChecked=0, Total=380 [2021-08-27 06:11:29,127 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 88 states. [2021-08-27 06:11:29,140 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 88 to 77. [2021-08-27 06:11:29,141 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 77 states, 47 states have (on average 1.574468085106383) internal successors, (74), 64 states have internal predecessors, (74), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:29,142 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 77 states to 77 states and 89 transitions. [2021-08-27 06:11:29,143 INFO L78 Accepts]: Start accepts. Automaton has 77 states and 89 transitions. Word has length 16 [2021-08-27 06:11:29,143 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:29,144 INFO L470 AbstractCegarLoop]: Abstraction has 77 states and 89 transitions. [2021-08-27 06:11:29,144 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 1.6363636363636365) internal successors, (18), 12 states have internal predecessors, (18), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:29,144 INFO L276 IsEmpty]: Start isEmpty. Operand 77 states and 89 transitions. [2021-08-27 06:11:29,145 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:29,145 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:29,145 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:29,152 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (2)] Ended with exit code 0 [2021-08-27 06:11:29,352 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:29,353 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 83 more)] === [2021-08-27 06:11:29,353 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:29,353 INFO L82 PathProgramCache]: Analyzing trace with hash -200276896, now seen corresponding path program 1 times [2021-08-27 06:11:29,354 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:29,354 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [910229144] [2021-08-27 06:11:29,354 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:29,354 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:29,354 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:29,356 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) [2021-08-27 06:11:29,357 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-08-27 06:11:29,510 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:29,512 INFO L263 TraceCheckSpWp]: Trace formula consists of 78 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:29,513 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:29,539 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 [2021-08-27 06:11:29,567 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:29,568 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:29,644 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:29,644 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:29,647 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [910229144] [2021-08-27 06:11:29,648 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [910229144] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:29,648 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:29,648 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-08-27 06:11:29,648 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [351947406] [2021-08-27 06:11:29,649 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:29,649 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:29,650 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:29,651 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:29,651 INFO L87 Difference]: Start difference. First operand 77 states and 89 transitions. Second operand has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:29,783 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:29,784 INFO L93 Difference]: Finished difference Result 83 states and 95 transitions. [2021-08-27 06:11:29,784 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:29,784 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:11:29,784 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:29,785 INFO L225 Difference]: With dead ends: 83 [2021-08-27 06:11:29,785 INFO L226 Difference]: Without dead ends: 83 [2021-08-27 06:11:29,786 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 27 SyntacticMatches, 1 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 12.4ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:29,786 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 83 states. [2021-08-27 06:11:29,789 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 83 to 79. [2021-08-27 06:11:29,790 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 79 states, 49 states have (on average 1.5510204081632653) internal successors, (76), 66 states have internal predecessors, (76), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:29,791 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 79 states to 79 states and 91 transitions. [2021-08-27 06:11:29,791 INFO L78 Accepts]: Start accepts. Automaton has 79 states and 91 transitions. Word has length 16 [2021-08-27 06:11:29,791 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:29,791 INFO L470 AbstractCegarLoop]: Abstraction has 79 states and 91 transitions. [2021-08-27 06:11:29,791 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:29,791 INFO L276 IsEmpty]: Start isEmpty. Operand 79 states and 91 transitions. [2021-08-27 06:11:29,791 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-08-27 06:11:29,791 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:29,792 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:29,800 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:29,992 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:29,992 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 83 more)] === [2021-08-27 06:11:29,993 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:29,993 INFO L82 PathProgramCache]: Analyzing trace with hash 687226786, now seen corresponding path program 1 times [2021-08-27 06:11:29,993 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:29,993 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2143700367] [2021-08-27 06:11:29,993 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:29,993 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:29,993 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:29,994 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) [2021-08-27 06:11:29,995 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-08-27 06:11:30,164 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:30,174 INFO L263 TraceCheckSpWp]: Trace formula consists of 74 conjuncts, 7 conjunts are in the unsatisfiable core [2021-08-27 06:11:30,175 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:30,254 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:30,255 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:30,334 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:30,334 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:30,334 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2143700367] [2021-08-27 06:11:30,335 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2143700367] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:30,335 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:30,335 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:30,335 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [685292086] [2021-08-27 06:11:30,335 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:30,335 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:30,336 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:30,336 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:30,336 INFO L87 Difference]: Start difference. First operand 79 states and 91 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:30,370 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:30,370 INFO L93 Difference]: Finished difference Result 78 states and 87 transitions. [2021-08-27 06:11:30,371 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:30,371 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-08-27 06:11:30,371 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:30,372 INFO L225 Difference]: With dead ends: 78 [2021-08-27 06:11:30,372 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 06:11:30,372 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 31 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 15.3ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:30,373 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 06:11:30,376 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-08-27 06:11:30,376 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.4893617021276595) internal successors, (70), 63 states have internal predecessors, (70), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:30,377 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 85 transitions. [2021-08-27 06:11:30,377 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 85 transitions. Word has length 16 [2021-08-27 06:11:30,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:30,377 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 85 transitions. [2021-08-27 06:11:30,378 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-08-27 06:11:30,378 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 85 transitions. [2021-08-27 06:11:30,378 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:11:30,378 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:30,378 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:30,389 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (4)] Ended with exit code 0 [2021-08-27 06:11:30,585 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:30,585 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:30,586 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:30,586 INFO L82 PathProgramCache]: Analyzing trace with hash -1913632700, now seen corresponding path program 1 times [2021-08-27 06:11:30,586 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:30,586 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1431810630] [2021-08-27 06:11:30,586 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:30,586 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:30,586 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:30,587 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) [2021-08-27 06:11:30,595 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-08-27 06:11:30,747 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:30,748 INFO L263 TraceCheckSpWp]: Trace formula consists of 79 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:11:30,749 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:30,798 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:30,798 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:30,873 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:30,874 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:30,874 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1431810630] [2021-08-27 06:11:30,874 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1431810630] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:30,874 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:30,874 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:11:30,874 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [396021201] [2021-08-27 06:11:30,875 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:11:30,875 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:30,875 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:11:30,875 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:30,875 INFO L87 Difference]: Start difference. First operand 76 states and 85 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:30,897 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:30,897 INFO L93 Difference]: Finished difference Result 78 states and 86 transitions. [2021-08-27 06:11:30,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:11:30,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) Word has length 17 [2021-08-27 06:11:30,898 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:30,899 INFO L225 Difference]: With dead ends: 78 [2021-08-27 06:11:30,899 INFO L226 Difference]: Without dead ends: 78 [2021-08-27 06:11:30,899 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 7.9ms TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:11:30,899 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 78 states. [2021-08-27 06:11:30,902 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 78 to 76. [2021-08-27 06:11:30,905 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 76 states, 47 states have (on average 1.4680851063829787) internal successors, (69), 63 states have internal predecessors, (69), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (8), 7 states have call predecessors, (8), 6 states have call successors, (8) [2021-08-27 06:11:30,907 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 76 states to 76 states and 84 transitions. [2021-08-27 06:11:30,908 INFO L78 Accepts]: Start accepts. Automaton has 76 states and 84 transitions. Word has length 17 [2021-08-27 06:11:30,908 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:30,908 INFO L470 AbstractCegarLoop]: Abstraction has 76 states and 84 transitions. [2021-08-27 06:11:30,908 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (4), 1 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:11:30,908 INFO L276 IsEmpty]: Start isEmpty. Operand 76 states and 84 transitions. [2021-08-27 06:11:30,909 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2021-08-27 06:11:30,909 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:30,909 INFO L512 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:30,919 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:31,115 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:31,116 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting mainErr0ENSURES_VIOLATIONMEMORY_LEAK === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:31,116 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:31,116 INFO L82 PathProgramCache]: Analyzing trace with hash -170822365, now seen corresponding path program 1 times [2021-08-27 06:11:31,116 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:31,116 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1298348645] [2021-08-27 06:11:31,116 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:31,117 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:31,117 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:31,117 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) [2021-08-27 06:11:31,118 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-08-27 06:11:31,278 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:31,280 INFO L263 TraceCheckSpWp]: Trace formula consists of 75 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:11:31,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:31,331 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:31,331 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:31,407 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:31,407 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:31,407 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1298348645] [2021-08-27 06:11:31,407 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1298348645] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:31,407 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:31,408 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2, 2] imperfect sequences [] total 2 [2021-08-27 06:11:31,408 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [626728560] [2021-08-27 06:11:31,408 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-08-27 06:11:31,408 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:31,408 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-08-27 06:11:31,409 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:11:31,409 INFO L87 Difference]: Start difference. First operand 76 states and 84 transitions. Second operand has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:11:31,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:31,494 INFO L93 Difference]: Finished difference Result 114 states and 127 transitions. [2021-08-27 06:11:31,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-08-27 06:11:31,495 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 17 [2021-08-27 06:11:31,495 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:31,496 INFO L225 Difference]: With dead ends: 114 [2021-08-27 06:11:31,496 INFO L226 Difference]: Without dead ends: 109 [2021-08-27 06:11:31,496 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 1 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 1.8ms TimeCoverageRelationStatistics Valid=3, Invalid=3, Unknown=0, NotChecked=0, Total=6 [2021-08-27 06:11:31,501 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 109 states. [2021-08-27 06:11:31,511 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 109 to 74. [2021-08-27 06:11:31,513 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 74 states, 45 states have (on average 1.488888888888889) internal successors, (67), 61 states have internal predecessors, (67), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:31,514 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 74 states to 74 states and 81 transitions. [2021-08-27 06:11:31,515 INFO L78 Accepts]: Start accepts. Automaton has 74 states and 81 transitions. Word has length 17 [2021-08-27 06:11:31,515 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:31,515 INFO L470 AbstractCegarLoop]: Abstraction has 74 states and 81 transitions. [2021-08-27 06:11:31,516 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 2 states have (on average 5.0) internal successors, (10), 3 states have internal predecessors, (10), 2 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2021-08-27 06:11:31,516 INFO L276 IsEmpty]: Start isEmpty. Operand 74 states and 81 transitions. [2021-08-27 06:11:31,516 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2021-08-27 06:11:31,517 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:31,517 INFO L512 BasicCegarLoop]: trace histogram [3, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:31,526 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:31,724 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:31,724 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:31,724 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:31,725 INFO L82 PathProgramCache]: Analyzing trace with hash -73256383, now seen corresponding path program 1 times [2021-08-27 06:11:31,725 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:31,725 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [378250064] [2021-08-27 06:11:31,725 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:31,725 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:31,725 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:31,728 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) [2021-08-27 06:11:31,729 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-08-27 06:11:31,904 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:31,907 INFO L263 TraceCheckSpWp]: Trace formula consists of 96 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:11:31,908 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:31,959 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 [2021-08-27 06:11:32,173 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:32,174 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:33,053 INFO L134 CoverageAnalysis]: Checked inductivity of 7 backedges. 0 proven. 7 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:33,053 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:33,054 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [378250064] [2021-08-27 06:11:33,054 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [378250064] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:33,054 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:33,054 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [9, 9] total 17 [2021-08-27 06:11:33,054 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [156268145] [2021-08-27 06:11:33,054 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-08-27 06:11:33,054 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:33,055 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-08-27 06:11:33,055 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=253, Unknown=0, NotChecked=0, Total=306 [2021-08-27 06:11:33,055 INFO L87 Difference]: Start difference. First operand 74 states and 81 transitions. Second operand has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:34,286 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:34,286 INFO L93 Difference]: Finished difference Result 91 states and 104 transitions. [2021-08-27 06:11:34,287 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:11:34,287 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 22 [2021-08-27 06:11:34,287 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:34,288 INFO L225 Difference]: With dead ends: 91 [2021-08-27 06:11:34,288 INFO L226 Difference]: Without dead ends: 91 [2021-08-27 06:11:34,288 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 54 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 27 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 109 ImplicationChecksByTransitivity, 1172.9ms TimeCoverageRelationStatistics Valid=155, Invalid=657, Unknown=0, NotChecked=0, Total=812 [2021-08-27 06:11:34,288 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 91 states. [2021-08-27 06:11:34,291 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 91 to 86. [2021-08-27 06:11:34,292 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 57 states have (on average 1.4210526315789473) internal successors, (81), 73 states have internal predecessors, (81), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:34,292 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 95 transitions. [2021-08-27 06:11:34,292 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 95 transitions. Word has length 22 [2021-08-27 06:11:34,293 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:34,293 INFO L470 AbstractCegarLoop]: Abstraction has 86 states and 95 transitions. [2021-08-27 06:11:34,293 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 15 states have (on average 2.0) internal successors, (30), 16 states have internal predecessors, (30), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:34,293 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 95 transitions. [2021-08-27 06:11:34,294 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 36 [2021-08-27 06:11:34,294 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:34,294 INFO L512 BasicCegarLoop]: trace histogram [3, 3, 3, 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] [2021-08-27 06:11:34,305 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:34,505 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:34,505 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:34,505 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:34,506 INFO L82 PathProgramCache]: Analyzing trace with hash -1067902475, now seen corresponding path program 1 times [2021-08-27 06:11:34,506 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:34,506 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [900244916] [2021-08-27 06:11:34,506 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:34,506 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:34,506 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:34,507 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) [2021-08-27 06:11:34,509 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-08-27 06:11:34,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:34,719 INFO L263 TraceCheckSpWp]: Trace formula consists of 137 conjuncts, 6 conjunts are in the unsatisfiable core [2021-08-27 06:11:34,720 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:34,855 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:34,855 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:35,044 INFO L134 CoverageAnalysis]: Checked inductivity of 12 backedges. 0 proven. 12 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:35,044 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:35,045 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [900244916] [2021-08-27 06:11:35,046 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [900244916] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:35,046 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:35,046 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 7] total 12 [2021-08-27 06:11:35,046 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1234354967] [2021-08-27 06:11:35,047 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2021-08-27 06:11:35,047 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:35,048 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2021-08-27 06:11:35,048 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=46, Invalid=86, Unknown=0, NotChecked=0, Total=132 [2021-08-27 06:11:35,048 INFO L87 Difference]: Start difference. First operand 86 states and 95 transitions. Second operand has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:35,251 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:35,252 INFO L93 Difference]: Finished difference Result 92 states and 98 transitions. [2021-08-27 06:11:35,252 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2021-08-27 06:11:35,252 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 35 [2021-08-27 06:11:35,252 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:35,253 INFO L225 Difference]: With dead ends: 92 [2021-08-27 06:11:35,253 INFO L226 Difference]: Without dead ends: 92 [2021-08-27 06:11:35,253 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 73 GetRequests, 59 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 30 ImplicationChecksByTransitivity, 177.8ms TimeCoverageRelationStatistics Valid=94, Invalid=146, Unknown=0, NotChecked=0, Total=240 [2021-08-27 06:11:35,253 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 92 states. [2021-08-27 06:11:35,256 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 92 to 91. [2021-08-27 06:11:35,256 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 62 states have (on average 1.3548387096774193) internal successors, (84), 78 states have internal predecessors, (84), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:35,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 98 transitions. [2021-08-27 06:11:35,256 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 98 transitions. Word has length 35 [2021-08-27 06:11:35,257 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:35,257 INFO L470 AbstractCegarLoop]: Abstraction has 91 states and 98 transitions. [2021-08-27 06:11:35,257 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 12 states have (on average 3.5833333333333335) internal successors, (43), 12 states have internal predecessors, (43), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:35,257 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 98 transitions. [2021-08-27 06:11:35,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2021-08-27 06:11:35,257 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:35,258 INFO L512 BasicCegarLoop]: trace histogram [7, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:35,267 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:35,466 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:35,469 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:35,469 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:35,469 INFO L82 PathProgramCache]: Analyzing trace with hash 1190057473, now seen corresponding path program 2 times [2021-08-27 06:11:35,469 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:35,469 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [215524528] [2021-08-27 06:11:35,469 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:11:35,469 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:35,470 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:35,470 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) [2021-08-27 06:11:35,471 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-08-27 06:11:35,704 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:11:35,704 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:11:35,708 INFO L263 TraceCheckSpWp]: Trace formula consists of 132 conjuncts, 18 conjunts are in the unsatisfiable core [2021-08-27 06:11:35,710 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:35,744 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 [2021-08-27 06:11:36,247 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:36,248 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:38,297 INFO L134 CoverageAnalysis]: Checked inductivity of 57 backedges. 0 proven. 57 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:38,297 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:38,298 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [215524528] [2021-08-27 06:11:38,298 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [215524528] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:38,298 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:38,298 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 27 [2021-08-27 06:11:38,298 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [330712200] [2021-08-27 06:11:38,298 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2021-08-27 06:11:38,298 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:38,298 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2021-08-27 06:11:38,299 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=154, Invalid=602, Unknown=0, NotChecked=0, Total=756 [2021-08-27 06:11:38,299 INFO L87 Difference]: Start difference. First operand 91 states and 98 transitions. Second operand has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:42,171 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:42,171 INFO L93 Difference]: Finished difference Result 112 states and 125 transitions. [2021-08-27 06:11:42,172 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 30 states. [2021-08-27 06:11:42,172 INFO L78 Accepts]: Start accepts. Automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 34 [2021-08-27 06:11:42,172 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:42,173 INFO L225 Difference]: With dead ends: 112 [2021-08-27 06:11:42,173 INFO L226 Difference]: Without dead ends: 112 [2021-08-27 06:11:42,174 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 41 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 377 ImplicationChecksByTransitivity, 4024.1ms TimeCoverageRelationStatistics Valid=487, Invalid=1493, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 06:11:42,174 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2021-08-27 06:11:42,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 110. [2021-08-27 06:11:42,177 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 110 states, 81 states have (on average 1.3333333333333333) internal successors, (108), 97 states have internal predecessors, (108), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:42,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 110 states to 110 states and 122 transitions. [2021-08-27 06:11:42,177 INFO L78 Accepts]: Start accepts. Automaton has 110 states and 122 transitions. Word has length 34 [2021-08-27 06:11:42,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:42,177 INFO L470 AbstractCegarLoop]: Abstraction has 110 states and 122 transitions. [2021-08-27 06:11:42,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 28 states, 25 states have (on average 2.16) internal successors, (54), 26 states have internal predecessors, (54), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:11:42,178 INFO L276 IsEmpty]: Start isEmpty. Operand 110 states and 122 transitions. [2021-08-27 06:11:42,178 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 06:11:42,179 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:42,179 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 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] [2021-08-27 06:11:42,189 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:42,386 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:42,386 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:42,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:42,386 INFO L82 PathProgramCache]: Analyzing trace with hash -321692208, now seen corresponding path program 2 times [2021-08-27 06:11:42,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:42,387 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [674821351] [2021-08-27 06:11:42,387 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:11:42,387 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:42,387 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:42,388 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) [2021-08-27 06:11:42,388 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-08-27 06:11:42,664 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2021-08-27 06:11:42,664 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:11:42,667 INFO L263 TraceCheckSpWp]: Trace formula consists of 110 conjuncts, 5 conjunts are in the unsatisfiable core [2021-08-27 06:11:42,668 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:42,821 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:11:42,821 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:42,996 INFO L134 CoverageAnalysis]: Checked inductivity of 92 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 92 trivial. 0 not checked. [2021-08-27 06:11:42,996 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:42,996 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [674821351] [2021-08-27 06:11:42,996 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [674821351] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:11:42,996 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:11:42,996 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 7 [2021-08-27 06:11:42,997 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1619678181] [2021-08-27 06:11:42,997 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-08-27 06:11:42,997 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:42,997 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-08-27 06:11:42,997 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=28, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:11:42,998 INFO L87 Difference]: Start difference. First operand 110 states and 122 transitions. Second operand has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:11:43,066 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:43,066 INFO L93 Difference]: Finished difference Result 141 states and 157 transitions. [2021-08-27 06:11:43,067 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:11:43,067 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) Word has length 50 [2021-08-27 06:11:43,067 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:43,068 INFO L225 Difference]: With dead ends: 141 [2021-08-27 06:11:43,068 INFO L226 Difference]: Without dead ends: 138 [2021-08-27 06:11:43,068 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 33.2ms TimeCoverageRelationStatistics Valid=19, Invalid=37, Unknown=0, NotChecked=0, Total=56 [2021-08-27 06:11:43,069 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 138 states. [2021-08-27 06:11:43,070 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 138 to 111. [2021-08-27 06:11:43,071 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.329268292682927) internal successors, (109), 98 states have internal predecessors, (109), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:43,071 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 123 transitions. [2021-08-27 06:11:43,071 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 123 transitions. Word has length 50 [2021-08-27 06:11:43,071 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:43,072 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 123 transitions. [2021-08-27 06:11:43,072 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.142857142857143) internal successors, (29), 7 states have internal predecessors, (29), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 3 states have call successors, (5) [2021-08-27 06:11:43,072 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 123 transitions. [2021-08-27 06:11:43,073 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2021-08-27 06:11:43,073 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:43,073 INFO L512 BasicCegarLoop]: trace histogram [8, 8, 8, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:43,081 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:43,279 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:43,280 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:43,280 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:43,280 INFO L82 PathProgramCache]: Analyzing trace with hash 115614506, now seen corresponding path program 1 times [2021-08-27 06:11:43,280 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:43,280 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1970452908] [2021-08-27 06:11:43,281 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:43,281 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:43,281 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:43,281 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) [2021-08-27 06:11:43,282 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-08-27 06:11:43,630 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:43,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 187 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:43,637 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:43,935 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 4 proven. 92 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:11:43,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:44,345 INFO L134 CoverageAnalysis]: Checked inductivity of 96 backedges. 0 proven. 92 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2021-08-27 06:11:44,345 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:44,345 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1970452908] [2021-08-27 06:11:44,346 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1970452908] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:44,346 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:44,346 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 22 [2021-08-27 06:11:44,346 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [277753890] [2021-08-27 06:11:44,346 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:11:44,346 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:44,347 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:11:44,347 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=349, Unknown=0, NotChecked=0, Total=462 [2021-08-27 06:11:44,347 INFO L87 Difference]: Start difference. First operand 111 states and 123 transitions. Second operand has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:44,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:44,665 INFO L93 Difference]: Finished difference Result 111 states and 121 transitions. [2021-08-27 06:11:44,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2021-08-27 06:11:44,665 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) Word has length 50 [2021-08-27 06:11:44,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:44,667 INFO L225 Difference]: With dead ends: 111 [2021-08-27 06:11:44,667 INFO L226 Difference]: Without dead ends: 111 [2021-08-27 06:11:44,667 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 79 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 134 ImplicationChecksByTransitivity, 328.3ms TimeCoverageRelationStatistics Valid=127, Invalid=379, Unknown=0, NotChecked=0, Total=506 [2021-08-27 06:11:44,667 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2021-08-27 06:11:44,670 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 111. [2021-08-27 06:11:44,670 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 82 states have (on average 1.3048780487804879) internal successors, (107), 98 states have internal predecessors, (107), 7 states have call successors, (7), 6 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:44,670 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-08-27 06:11:44,671 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 50 [2021-08-27 06:11:44,671 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:44,671 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-08-27 06:11:44,671 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 22 states have (on average 3.1363636363636362) internal successors, (69), 22 states have internal predecessors, (69), 4 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (5), 4 states have call predecessors, (5), 4 states have call successors, (5) [2021-08-27 06:11:44,671 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-08-27 06:11:44,673 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:11:44,673 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:44,673 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:44,687 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-08-27 06:11:44,873 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:44,873 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting alloc_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:44,874 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:44,874 INFO L82 PathProgramCache]: Analyzing trace with hash -1051535094, now seen corresponding path program 2 times [2021-08-27 06:11:44,874 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:44,874 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1406293387] [2021-08-27 06:11:44,874 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2021-08-27 06:11:44,874 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:44,874 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:44,875 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) [2021-08-27 06:11:44,876 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-08-27 06:11:45,266 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2021-08-27 06:11:45,266 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:11:45,272 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 11 conjunts are in the unsatisfiable core [2021-08-27 06:11:45,274 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:45,300 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 [2021-08-27 06:11:45,509 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-08-27 06:11:45,510 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 16 treesize of output 21 [2021-08-27 06:11:45,535 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:11:45,535 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:11:45,835 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:11:45,837 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:11:45,838 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1406293387] [2021-08-27 06:11:45,838 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1406293387] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:11:45,838 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:11:45,838 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 7] total 9 [2021-08-27 06:11:45,838 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1459276201] [2021-08-27 06:11:45,838 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-08-27 06:11:45,839 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:11:45,840 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-08-27 06:11:45,840 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=19, Invalid=71, Unknown=0, NotChecked=0, Total=90 [2021-08-27 06:11:45,840 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:11:46,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:11:46,398 INFO L93 Difference]: Finished difference Result 198 states and 222 transitions. [2021-08-27 06:11:46,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-08-27 06:11:46,398 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) Word has length 56 [2021-08-27 06:11:46,398 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:11:46,399 INFO L225 Difference]: With dead ends: 198 [2021-08-27 06:11:46,399 INFO L226 Difference]: Without dead ends: 196 [2021-08-27 06:11:46,400 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 121 GetRequests, 96 SyntacticMatches, 8 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 36 ImplicationChecksByTransitivity, 230.3ms TimeCoverageRelationStatistics Valid=74, Invalid=268, Unknown=0, NotChecked=0, Total=342 [2021-08-27 06:11:46,400 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 196 states. [2021-08-27 06:11:46,405 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 196 to 111. [2021-08-27 06:11:46,406 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 111 states, 84 states have (on average 1.2738095238095237) internal successors, (107), 97 states have internal predecessors, (107), 7 states have call successors, (7), 7 states have call predecessors, (7), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-08-27 06:11:46,406 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 111 states to 111 states and 121 transitions. [2021-08-27 06:11:46,406 INFO L78 Accepts]: Start accepts. Automaton has 111 states and 121 transitions. Word has length 56 [2021-08-27 06:11:46,406 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:11:46,407 INFO L470 AbstractCegarLoop]: Abstraction has 111 states and 121 transitions. [2021-08-27 06:11:46,407 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.5555555555555554) internal successors, (23), 8 states have internal predecessors, (23), 3 states have call successors, (7), 4 states have call predecessors, (7), 4 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2021-08-27 06:11:46,407 INFO L276 IsEmpty]: Start isEmpty. Operand 111 states and 121 transitions. [2021-08-27 06:11:46,407 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2021-08-27 06:11:46,407 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:11:46,408 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:11:46,416 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-08-27 06:11:46,615 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:11:46,616 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting alloc_17Err1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:11:46,616 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:11:46,616 INFO L82 PathProgramCache]: Analyzing trace with hash -1051535093, now seen corresponding path program 1 times [2021-08-27 06:11:46,616 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:11:46,616 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1826647750] [2021-08-27 06:11:46,617 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:11:46,617 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:11:46,617 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:11:46,617 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) [2021-08-27 06:11:46,636 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-08-27 06:11:47,050 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:11:47,057 INFO L263 TraceCheckSpWp]: Trace formula consists of 205 conjuncts, 26 conjunts are in the unsatisfiable core [2021-08-27 06:11:47,059 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:11:47,092 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 [2021-08-27 06:11:47,097 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 [2021-08-27 06:11:49,687 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-08-27 06:11:49,687 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 33 treesize of output 35 [2021-08-27 06:11:49,695 INFO L354 Elim1Store]: treesize reduction 4, result has 50.0 percent of original size [2021-08-27 06:11:49,695 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 27 treesize of output 27 [2021-08-27 06:11:49,747 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:11:49,747 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:12:08,155 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 33 treesize of output 31 [2021-08-27 06:12:08,574 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 31 treesize of output 29 [2021-08-27 06:12:08,713 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:12:08,714 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:12:08,714 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1826647750] [2021-08-27 06:12:08,714 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1826647750] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:12:08,714 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:12:08,714 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 11] total 21 [2021-08-27 06:12:08,714 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1898817332] [2021-08-27 06:12:08,714 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 22 states [2021-08-27 06:12:08,714 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:12:08,715 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 22 interpolants. [2021-08-27 06:12:08,715 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=403, Unknown=6, NotChecked=0, Total=462 [2021-08-27 06:12:08,715 INFO L87 Difference]: Start difference. First operand 111 states and 121 transitions. Second operand has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:15:13,086 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:15:13,086 INFO L93 Difference]: Finished difference Result 206 states and 235 transitions. [2021-08-27 06:15:13,087 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 06:15:13,087 INFO L78 Accepts]: Start accepts. Automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) Word has length 56 [2021-08-27 06:15:13,088 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:15:13,088 INFO L225 Difference]: With dead ends: 206 [2021-08-27 06:15:13,088 INFO L226 Difference]: Without dead ends: 206 [2021-08-27 06:15:13,089 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 122 GetRequests, 91 SyntacticMatches, 0 SemanticMatches, 31 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 108 ImplicationChecksByTransitivity, 46651.9ms TimeCoverageRelationStatistics Valid=148, Invalid=892, Unknown=16, NotChecked=0, Total=1056 [2021-08-27 06:15:13,089 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 206 states. [2021-08-27 06:15:13,091 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 206 to 121. [2021-08-27 06:15:13,091 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 121 states, 92 states have (on average 1.2826086956521738) internal successors, (118), 105 states have internal predecessors, (118), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (11), 8 states have call predecessors, (11), 8 states have call successors, (11) [2021-08-27 06:15:13,092 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 121 states to 121 states and 138 transitions. [2021-08-27 06:15:13,092 INFO L78 Accepts]: Start accepts. Automaton has 121 states and 138 transitions. Word has length 56 [2021-08-27 06:15:13,092 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:15:13,092 INFO L470 AbstractCegarLoop]: Abstraction has 121 states and 138 transitions. [2021-08-27 06:15:13,093 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 22 states, 19 states have (on average 2.0) internal successors, (38), 18 states have internal predecessors, (38), 7 states have call successors, (9), 5 states have call predecessors, (9), 5 states have return successors, (5), 5 states have call predecessors, (5), 5 states have call successors, (5) [2021-08-27 06:15:13,093 INFO L276 IsEmpty]: Start isEmpty. Operand 121 states and 138 transitions. [2021-08-27 06:15:13,093 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:15:13,093 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:15:13,093 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:15:13,105 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:13,294 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:15:13,294 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:15:13,294 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:15:13,294 INFO L82 PathProgramCache]: Analyzing trace with hash -1207954601, now seen corresponding path program 1 times [2021-08-27 06:15:13,295 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:15:13,295 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1445287458] [2021-08-27 06:15:13,295 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:15:13,295 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:15:13,295 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:15:13,295 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) [2021-08-27 06:15:13,296 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-08-27 06:15:13,784 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:15:13,790 INFO L263 TraceCheckSpWp]: Trace formula consists of 208 conjuncts, 4 conjunts are in the unsatisfiable core [2021-08-27 06:15:13,791 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:13,919 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:15:13,919 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:14,040 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2021-08-27 06:15:14,040 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:15:14,040 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1445287458] [2021-08-27 06:15:14,040 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1445287458] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:15:14,040 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:15:14,040 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-08-27 06:15:14,041 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [343131671] [2021-08-27 06:15:14,041 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-08-27 06:15:14,041 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:15:14,041 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-08-27 06:15:14,041 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-08-27 06:15:14,042 INFO L87 Difference]: Start difference. First operand 121 states and 138 transitions. Second operand has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:15:14,100 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:15:14,100 INFO L93 Difference]: Finished difference Result 140 states and 162 transitions. [2021-08-27 06:15:14,100 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-08-27 06:15:14,101 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) Word has length 58 [2021-08-27 06:15:14,101 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:15:14,101 INFO L225 Difference]: With dead ends: 140 [2021-08-27 06:15:14,101 INFO L226 Difference]: Without dead ends: 140 [2021-08-27 06:15:14,102 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 112 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 20.8ms TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:15:14,102 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 140 states. [2021-08-27 06:15:14,104 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 140 to 125. [2021-08-27 06:15:14,104 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 125 states, 96 states have (on average 1.2604166666666667) internal successors, (121), 107 states have internal predecessors, (121), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2021-08-27 06:15:14,104 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 125 states to 125 states and 141 transitions. [2021-08-27 06:15:14,105 INFO L78 Accepts]: Start accepts. Automaton has 125 states and 141 transitions. Word has length 58 [2021-08-27 06:15:14,105 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:15:14,105 INFO L470 AbstractCegarLoop]: Abstraction has 125 states and 141 transitions. [2021-08-27 06:15:14,105 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.2) internal successors, (21), 4 states have internal predecessors, (21), 1 states have call successors, (6), 1 states have call predecessors, (6), 2 states have return successors, (3), 2 states have call predecessors, (3), 1 states have call successors, (3) [2021-08-27 06:15:14,105 INFO L276 IsEmpty]: Start isEmpty. Operand 125 states and 141 transitions. [2021-08-27 06:15:14,105 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:15:14,105 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:15:14,106 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:15:14,114 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:14,314 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:15:14,314 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting alloc_17Err3REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:15:14,314 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:15:14,315 INFO L82 PathProgramCache]: Analyzing trace with hash 534855734, now seen corresponding path program 1 times [2021-08-27 06:15:14,315 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:15:14,315 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [159181325] [2021-08-27 06:15:14,315 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:15:14,315 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:15:14,315 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:15:14,316 INFO L229 MonitoredProcess]: Starting monitored process 15 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:15:14,317 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-08-27 06:15:14,827 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:15:14,833 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 3 conjunts are in the unsatisfiable core [2021-08-27 06:15:14,834 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:14,962 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:15:14,962 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:15,093 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2021-08-27 06:15:15,094 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:15:15,094 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [159181325] [2021-08-27 06:15:15,094 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [159181325] provided 2 perfect and 0 imperfect interpolant sequences [2021-08-27 06:15:15,094 INFO L186 FreeRefinementEngine]: Constructing automaton from 2 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:15:15,094 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 6 [2021-08-27 06:15:15,094 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1179416061] [2021-08-27 06:15:15,094 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-08-27 06:15:15,094 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:15:15,095 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-08-27 06:15:15,095 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-08-27 06:15:15,095 INFO L87 Difference]: Start difference. First operand 125 states and 141 transitions. Second operand has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:15:15,203 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:15:15,203 INFO L93 Difference]: Finished difference Result 132 states and 148 transitions. [2021-08-27 06:15:15,204 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-08-27 06:15:15,204 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 58 [2021-08-27 06:15:15,204 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:15:15,204 INFO L225 Difference]: With dead ends: 132 [2021-08-27 06:15:15,205 INFO L226 Difference]: Without dead ends: 132 [2021-08-27 06:15:15,205 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 116 GetRequests, 111 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 30.2ms TimeCoverageRelationStatistics Valid=17, Invalid=25, Unknown=0, NotChecked=0, Total=42 [2021-08-27 06:15:15,205 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 132 states. [2021-08-27 06:15:15,207 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 132 to 127. [2021-08-27 06:15:15,207 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 127 states, 98 states have (on average 1.2551020408163265) internal successors, (123), 109 states have internal predecessors, (123), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2021-08-27 06:15:15,208 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 127 states to 127 states and 143 transitions. [2021-08-27 06:15:15,208 INFO L78 Accepts]: Start accepts. Automaton has 127 states and 143 transitions. Word has length 58 [2021-08-27 06:15:15,208 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:15:15,208 INFO L470 AbstractCegarLoop]: Abstraction has 127 states and 143 transitions. [2021-08-27 06:15:15,209 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 4.333333333333333) internal successors, (26), 6 states have internal predecessors, (26), 3 states have call successors, (7), 1 states have call predecessors, (7), 1 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2021-08-27 06:15:15,209 INFO L276 IsEmpty]: Start isEmpty. Operand 127 states and 143 transitions. [2021-08-27 06:15:15,209 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 59 [2021-08-27 06:15:15,209 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:15:15,209 INFO L512 BasicCegarLoop]: trace histogram [15, 14, 14, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-08-27 06:15:15,220 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:15,418 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:15:15,418 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting entry_pointErr1REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:15:15,419 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:15:15,419 INFO L82 PathProgramCache]: Analyzing trace with hash 1546730881, now seen corresponding path program 3 times [2021-08-27 06:15:15,419 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:15:15,419 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1725843530] [2021-08-27 06:15:15,419 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2021-08-27 06:15:15,419 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:15:15,419 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:15:15,420 INFO L229 MonitoredProcess]: Starting monitored process 16 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:15:15,421 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-08-27 06:15:16,154 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 15 check-sat command(s) [2021-08-27 06:15:16,154 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2021-08-27 06:15:16,161 INFO L263 TraceCheckSpWp]: Trace formula consists of 204 conjuncts, 28 conjunts are in the unsatisfiable core [2021-08-27 06:15:16,162 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:16,207 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 [2021-08-27 06:15:17,653 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 41 proven. 260 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:15:17,653 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:27,900 INFO L134 CoverageAnalysis]: Checked inductivity of 301 backedges. 0 proven. 301 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-08-27 06:15:27,900 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:15:27,900 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1725843530] [2021-08-27 06:15:27,900 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1725843530] provided 0 perfect and 2 imperfect interpolant sequences [2021-08-27 06:15:27,900 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 2 imperfect interpolant sequences. [2021-08-27 06:15:27,900 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [21, 23] total 43 [2021-08-27 06:15:27,900 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [827072683] [2021-08-27 06:15:27,901 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 43 states [2021-08-27 06:15:27,901 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-08-27 06:15:27,901 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 43 interpolants. [2021-08-27 06:15:27,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=402, Invalid=1404, Unknown=0, NotChecked=0, Total=1806 [2021-08-27 06:15:27,902 INFO L87 Difference]: Start difference. First operand 127 states and 143 transitions. Second operand has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:15:36,414 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-08-27 06:15:36,414 INFO L93 Difference]: Finished difference Result 113 states and 124 transitions. [2021-08-27 06:15:36,416 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2021-08-27 06:15:36,416 INFO L78 Accepts]: Start accepts. Automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 58 [2021-08-27 06:15:36,416 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-08-27 06:15:36,417 INFO L225 Difference]: With dead ends: 113 [2021-08-27 06:15:36,417 INFO L226 Difference]: Without dead ends: 113 [2021-08-27 06:15:36,417 INFO L781 BasicCegarLoop]: 0 DeclaredPredicates, 117 GetRequests, 74 SyntacticMatches, 0 SemanticMatches, 43 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 506 ImplicationChecksByTransitivity, 11238.0ms TimeCoverageRelationStatistics Valid=444, Invalid=1536, Unknown=0, NotChecked=0, Total=1980 [2021-08-27 06:15:36,417 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2021-08-27 06:15:36,419 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 113. [2021-08-27 06:15:36,419 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 85 states have (on average 1.223529411764706) internal successors, (104), 95 states have internal predecessors, (104), 9 states have call successors, (9), 7 states have call predecessors, (9), 6 states have return successors, (11), 10 states have call predecessors, (11), 8 states have call successors, (11) [2021-08-27 06:15:36,420 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 124 transitions. [2021-08-27 06:15:36,420 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 124 transitions. Word has length 58 [2021-08-27 06:15:36,420 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-08-27 06:15:36,420 INFO L470 AbstractCegarLoop]: Abstraction has 113 states and 124 transitions. [2021-08-27 06:15:36,420 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 43 states, 41 states have (on average 2.4878048780487805) internal successors, (102), 41 states have internal predecessors, (102), 3 states have call successors, (5), 1 states have call predecessors, (5), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2021-08-27 06:15:36,420 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 124 transitions. [2021-08-27 06:15:36,421 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2021-08-27 06:15:36,421 INFO L504 BasicCegarLoop]: Found error trace [2021-08-27 06:15:36,421 INFO L512 BasicCegarLoop]: trace histogram [10, 10, 10, 2, 2, 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] [2021-08-27 06:15:36,436 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:36,621 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 [2021-08-27 06:15:36,622 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting free_17Err0REQUIRES_VIOLATION === [ldv_msg_allocErr0REQUIRES_VIOLATION, ldv_msg_allocErr1REQUIRES_VIOLATION, ldv_kref_initErr0REQUIRES_VIOLATION, ldv_kref_initErr1REQUIRES_VIOLATION (and 83 more)] === [2021-08-27 06:15:36,622 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-08-27 06:15:36,622 INFO L82 PathProgramCache]: Analyzing trace with hash 926469409, now seen corresponding path program 1 times [2021-08-27 06:15:36,622 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-08-27 06:15:36,622 INFO L332 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [477317572] [2021-08-27 06:15:36,622 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:15:36,622 INFO L170 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-08-27 06:15:36,622 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat [2021-08-27 06:15:36,623 INFO L229 MonitoredProcess]: Starting monitored process 17 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-08-27 06:15:36,624 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-08-27 06:15:37,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:15:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:15:37,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:37,312 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 [2021-08-27 06:15:37,584 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:15:37,584 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:37,804 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-08-27 06:15:37,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [477317572] [2021-08-27 06:15:37,805 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:15:37,805 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [2014595564] [2021-08-27 06:15:37,805 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:15:37,805 INFO L170 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2021-08-27 06:15:37,805 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 [2021-08-27 06:15:37,807 INFO L229 MonitoredProcess]: Starting monitored process 18 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2021-08-27 06:15:37,807 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Waiting until timeout for monitored process [2021-08-27 06:15:38,829 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:15:38,832 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 13 conjunts are in the unsatisfiable core [2021-08-27 06:15:38,833 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:38,854 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 [2021-08-27 06:15:39,130 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:15:39,130 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:39,349 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:15:39,349 INFO L332 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [936365774] [2021-08-27 06:15:39,349 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-08-27 06:15:39,349 INFO L170 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:15:39,349 INFO L189 MonitoredProcess]: No working directory specified, using /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 [2021-08-27 06:15:39,364 INFO L229 MonitoredProcess]: Starting monitored process 19 with /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-08-27 06:15:39,380 INFO L327 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Waiting until timeout for monitored process [2021-08-27 06:15:40,190 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-08-27 06:15:40,195 INFO L263 TraceCheckSpWp]: Trace formula consists of 218 conjuncts, 12 conjunts are in the unsatisfiable core [2021-08-27 06:15:40,197 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-08-27 06:15:40,217 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 [2021-08-27 06:15:40,438 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2021-08-27 06:15:40,438 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-08-27 06:15:40,656 WARN L311 FreeRefinementEngine]: Interpolation failed due to KNOWN_DEPENDING: Alternating quantifiers not yet supported [2021-08-27 06:15:40,656 INFO L186 FreeRefinementEngine]: Constructing automaton from 0 perfect and 0 imperfect interpolant sequences. [2021-08-27 06:15:40,656 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [] total 0 [2021-08-27 06:15:40,656 ERROR L172 FreeRefinementEngine]: Strategy WOLF failed to provide any proof altough trace is infeasible [2021-08-27 06:15:40,656 INFO L626 BasicCegarLoop]: Counterexample might be feasible [2021-08-27 06:15:40,659 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err0REQUIRES_VIOLATION [2021-08-27 06:15:40,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_allocErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,660 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kref_initErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_add_returnErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION [2021-08-27 06:15:40,661 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_set_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_atomic_sub_returnErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr4REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_destroy_msgsErr5REQUIRES_VIOLATION [2021-08-27 06:15:40,662 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err0REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err1REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err2REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err3REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err7REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location alloc_17Err8REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_dev_get_drvdataErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,663 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_freeErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location mainErr0ENSURES_VIOLATIONMEMORY_LEAK [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr4REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_msg_fillErr5REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr5ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr6ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_cleanupErr7ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,664 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_kobject_createErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr2REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_delErr3REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_add_tailErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err1REQUIRES_VIOLATION [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err2ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,665 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err3ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location free_17Err4ASSERT_VIOLATIONMEMORY_FREE [2021-08-27 06:15:40,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr0REQUIRES_VIOLATION [2021-08-27 06:15:40,666 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location entry_pointErr1REQUIRES_VIOLATION [2021-08-27 06:15:40,677 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:40,871 INFO L540 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt (18)] Forceful destruction successful, exit code 0 [2021-08-27 06:15:41,087 INFO L552 MonitoredProcess]: [MP /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true (19)] Ended with exit code 0 [2021-08-27 06:15:41,266 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/mathsat -unsat_core_generation=3,18 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/cvc4 --incremental --print-success --lang smt,19 /storage/repos/ultimate/releaseScripts/default/UAutomizer-linux/z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-08-27 06:15:41,271 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-08-27 06:15:41,282 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 27.08 06:15:41 BoogieIcfgContainer [2021-08-27 06:15:41,282 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-08-27 06:15:41,282 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-08-27 06:15:41,282 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-08-27 06:15:41,282 INFO L275 PluginConnector]: Witness Printer initialized [2021-08-27 06:15:41,283 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 27.08 06:11:27" (3/4) ... [2021-08-27 06:15:41,284 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-08-27 06:15:41,284 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-08-27 06:15:41,285 INFO L168 Benchmark]: Toolchain (without parser) took 255509.63 ms. Allocated memory was 56.6 MB in the beginning and 146.8 MB in the end (delta: 90.2 MB). Free memory was 33.4 MB in the beginning and 89.7 MB in the end (delta: -56.3 MB). Peak memory consumption was 34.9 MB. Max. memory is 16.1 GB. [2021-08-27 06:15:41,285 INFO L168 Benchmark]: CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:15:41,286 INFO L168 Benchmark]: CACSL2BoogieTranslator took 456.01 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 48.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:15:41,286 INFO L168 Benchmark]: Boogie Preprocessor took 110.48 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 43.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. [2021-08-27 06:15:41,286 INFO L168 Benchmark]: RCFGBuilder took 1026.35 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 43.6 MB in the beginning and 49.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:15:41,286 INFO L168 Benchmark]: TraceAbstraction took 253909.36 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 49.0 MB in the beginning and 90.7 MB in the end (delta: -41.7 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. [2021-08-27 06:15:41,286 INFO L168 Benchmark]: Witness Printer took 2.20 ms. Allocated memory is still 146.8 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. [2021-08-27 06:15:41,287 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.16 ms. Allocated memory is still 56.6 MB. Free memory was 38.2 MB in the beginning and 38.1 MB in the end (delta: 73.4 kB). There was no memory consumed. Max. memory is 16.1 GB. * CACSL2BoogieTranslator took 456.01 ms. Allocated memory was 56.6 MB in the beginning and 69.2 MB in the end (delta: 12.6 MB). Free memory was 33.2 MB in the beginning and 48.5 MB in the end (delta: -15.3 MB). Peak memory consumption was 14.6 MB. Max. memory is 16.1 GB. * Boogie Preprocessor took 110.48 ms. Allocated memory is still 69.2 MB. Free memory was 48.5 MB in the beginning and 43.6 MB in the end (delta: 4.9 MB). Peak memory consumption was 6.3 MB. Max. memory is 16.1 GB. * RCFGBuilder took 1026.35 ms. Allocated memory was 69.2 MB in the beginning and 83.9 MB in the end (delta: 14.7 MB). Free memory was 43.6 MB in the beginning and 49.0 MB in the end (delta: -5.4 MB). Peak memory consumption was 23.6 MB. Max. memory is 16.1 GB. * TraceAbstraction took 253909.36 ms. Allocated memory was 83.9 MB in the beginning and 146.8 MB in the end (delta: 62.9 MB). Free memory was 49.0 MB in the beginning and 90.7 MB in the end (delta: -41.7 MB). Peak memory consumption was 87.6 MB. Max. memory is 16.1 GB. * Witness Printer took 2.20 ms. Allocated memory is still 146.8 MB. Free memory is still 89.7 MB. There was no memory consumed. Max. memory is 16.1 GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0ms ErrorAutomatonConstructionTimeTotal, 0.0ms FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0ms ErrorAutomatonConstructionTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeAvg, 0.0ms ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 780]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: unable to decide satisfiability of path constraint. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L795] CALL entry_point() [L784] int i; [L785] int len = 10; [L786] CALL, EXPR ldv_malloc(sizeof(struct A17*)*len) [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L786] RET, EXPR ldv_malloc(sizeof(struct A17*)*len) [L786] struct A17 **array = (struct A17 **)ldv_malloc(sizeof(struct A17*)*len); [L787] COND FALSE !(!array) [L788] i=0 [L788] COND TRUE i=0) [L775] return - -3; [L791] RET alloc_17(array, len) [L792] CALL free_17(array, len) [L778] int i; [L779] i=0 [L779] COND TRUE i