./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:39:55,590 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:39:55,592 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:39:55,628 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:39:55,629 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:39:55,630 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:39:55,632 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:39:55,634 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:39:55,637 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:39:55,638 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:39:55,639 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:39:55,641 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:39:55,641 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:39:55,642 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:39:55,644 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:39:55,646 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:39:55,647 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:39:55,648 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:39:55,650 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:39:55,653 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:39:55,654 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:39:55,657 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:39:55,659 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:39:55,660 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:39:55,664 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:39:55,664 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:39:55,664 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:39:55,666 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:39:55,666 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:39:55,667 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:39:55,679 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:39:55,680 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:39:55,681 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:39:55,682 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:39:55,684 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:39:55,684 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:39:55,685 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:39:55,685 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:39:55,685 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:39:55,687 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:39:55,689 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:39:55,690 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2021-11-20 05:39:55,743 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:39:55,743 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:39:55,744 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:39:55,744 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:39:55,752 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:39:55,752 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:39:55,753 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:39:55,753 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:39:55,754 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:39:55,754 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:39:55,754 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:39:55,754 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:39:55,754 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:39:55,755 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:39:55,755 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:39:55,755 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:39:55,755 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:39:55,755 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:39:55,756 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:39:55,756 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:39:55,756 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:39:55,756 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:39:55,757 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:39:55,757 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:39:55,757 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:39:55,757 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:39:55,757 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:39:55,758 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:39:55,758 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 05:39:55,758 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 05:39:55,758 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:39:55,758 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-11-20 05:39:56,068 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:39:56,091 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:39:56,094 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:39:56,096 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:39:56,096 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:39:56,098 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-11-20 05:39:56,185 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/531c5b6f3/c3430eb6769d4cb4a204470697ecf49e/FLAG84a1d01ba [2021-11-20 05:39:56,791 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:39:56,791 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-11-20 05:39:56,825 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/531c5b6f3/c3430eb6769d4cb4a204470697ecf49e/FLAG84a1d01ba [2021-11-20 05:39:57,178 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/531c5b6f3/c3430eb6769d4cb4a204470697ecf49e [2021-11-20 05:39:57,181 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:39:57,182 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:39:57,184 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:39:57,184 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:39:57,190 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:39:57,191 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:57" (1/1) ... [2021-11-20 05:39:57,192 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@19e38553 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:57, skipping insertion in model container [2021-11-20 05:39:57,194 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:39:57" (1/1) ... [2021-11-20 05:39:57,201 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:39:57,243 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:39:57,647 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:39:57,665 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) [2021-11-20 05:39:57,665 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7b5619ef and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:39:57, skipping insertion in model container [2021-11-20 05:39:57,666 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:39:57,666 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2021-11-20 05:39:57,668 INFO L158 Benchmark]: Toolchain (without parser) took 484.57ms. Allocated memory is still 92.3MB. Free memory was 67.4MB in the beginning and 61.0MB in the end (delta: 6.3MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:39:57,669 INFO L158 Benchmark]: CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 65.0MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:39:57,669 INFO L158 Benchmark]: CACSL2BoogieTranslator took 482.07ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 61.0MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2021-11-20 05:39:57,674 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.36ms. Allocated memory is still 92.3MB. Free memory was 65.0MB in the beginning and 65.0MB in the end (delta: 41.0kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 482.07ms. Allocated memory is still 92.3MB. Free memory was 67.2MB in the beginning and 61.0MB in the end (delta: 6.1MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: - UnsupportedSyntaxResult [Line: 576]: Unsupported Syntax Found a cast between two array/pointer types where the value type is smaller than the cast-to type while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF --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 c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 05:39:59,889 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 05:39:59,891 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 05:39:59,964 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 05:39:59,964 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 05:39:59,969 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 05:39:59,971 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 05:39:59,977 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 05:39:59,981 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 05:39:59,987 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 05:39:59,988 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 05:39:59,990 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 05:39:59,991 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 05:39:59,994 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 05:39:59,996 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 05:40:00,000 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 05:40:00,002 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 05:40:00,003 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 05:40:00,006 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 05:40:00,014 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 05:40:00,016 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 05:40:00,017 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 05:40:00,020 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 05:40:00,022 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 05:40:00,031 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 05:40:00,031 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 05:40:00,032 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 05:40:00,034 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 05:40:00,034 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 05:40:00,036 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 05:40:00,036 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 05:40:00,037 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 05:40:00,039 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 05:40:00,040 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 05:40:00,041 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 05:40:00,042 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 05:40:00,043 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 05:40:00,043 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 05:40:00,043 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 05:40:00,045 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 05:40:00,046 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 05:40:00,047 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2021-11-20 05:40:00,093 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 05:40:00,093 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 05:40:00,094 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 05:40:00,094 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 05:40:00,095 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 05:40:00,095 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 05:40:00,096 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 05:40:00,096 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 05:40:00,096 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 05:40:00,097 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 05:40:00,097 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 05:40:00,097 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2021-11-20 05:40:00,097 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 05:40:00,097 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 05:40:00,098 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 05:40:00,098 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2021-11-20 05:40:00,098 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2021-11-20 05:40:00,098 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2021-11-20 05:40:00,099 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 05:40:00,099 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2021-11-20 05:40:00,099 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2021-11-20 05:40:00,099 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2021-11-20 05:40:00,100 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 05:40:00,100 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 05:40:00,100 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 05:40:00,100 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 05:40:00,100 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 05:40:00,101 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:40:00,101 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 05:40:00,101 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 05:40:00,101 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2021-11-20 05:40:00,102 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2021-11-20 05:40:00,102 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 05:40:00,102 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2021-11-20 05:40:00,102 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:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> c20063fdafbef5c00ec1f1fcfed63f5b6ab29c7a5ae9bd5cc27a6dcf474b9797 [2021-11-20 05:40:00,466 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 05:40:00,500 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 05:40:00,505 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 05:40:00,506 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 05:40:00,507 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 05:40:00,509 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-11-20 05:40:00,589 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/754310b8b/f10fe56ea43c490abd2323f82d2240ad/FLAGb3ada827e [2021-11-20 05:40:01,363 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 05:40:01,363 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/sv-benchmarks/c/ldv-memsafety/memleaks_test13_1.i [2021-11-20 05:40:01,381 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/754310b8b/f10fe56ea43c490abd2323f82d2240ad/FLAGb3ada827e [2021-11-20 05:40:01,563 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/data/754310b8b/f10fe56ea43c490abd2323f82d2240ad [2021-11-20 05:40:01,566 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 05:40:01,567 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 05:40:01,569 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 05:40:01,569 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 05:40:01,573 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 05:40:01,574 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:40:01" (1/1) ... [2021-11-20 05:40:01,575 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@63deb195 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:01, skipping insertion in model container [2021-11-20 05:40:01,576 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 05:40:01" (1/1) ... [2021-11-20 05:40:01,583 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 05:40:01,625 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:40:02,103 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:40:02,128 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2021-11-20 05:40:02,146 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 05:40:02,230 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:40:02,242 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 05:40:02,285 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 05:40:02,331 INFO L208 MainTranslator]: Completed translation [2021-11-20 05:40:02,332 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02 WrapperNode [2021-11-20 05:40:02,332 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 05:40:02,333 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 05:40:02,333 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 05:40:02,333 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 05:40:02,340 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,373 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,392 INFO L137 Inliner]: procedures = 166, calls = 74, calls flagged for inlining = 21, calls inlined = 4, statements flattened = 22 [2021-11-20 05:40:02,393 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 05:40:02,394 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 05:40:02,394 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 05:40:02,394 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 05:40:02,403 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,403 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,407 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,407 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,415 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,417 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,419 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,422 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 05:40:02,423 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 05:40:02,424 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 05:40:02,424 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 05:40:02,425 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (1/1) ... [2021-11-20 05:40:02,432 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 05:40:02,446 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 05:40:02,473 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 05:40:02,500 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 05:40:02,535 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2021-11-20 05:40:02,535 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2021-11-20 05:40:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure __ldv_list_add [2021-11-20 05:40:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure __ldv_list_add [2021-11-20 05:40:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2021-11-20 05:40:02,536 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2021-11-20 05:40:02,536 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_list_add [2021-11-20 05:40:02,537 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_list_add [2021-11-20 05:40:02,537 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2021-11-20 05:40:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 05:40:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2021-11-20 05:40:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2021-11-20 05:40:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2021-11-20 05:40:02,538 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 05:40:02,538 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 05:40:02,708 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 05:40:02,710 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 05:40:02,976 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 05:40:02,985 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 05:40:02,986 INFO L301 CfgBuilder]: Removed 0 assume(true) statements. [2021-11-20 05:40:02,989 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:02 BoogieIcfgContainer [2021-11-20 05:40:02,990 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 05:40:02,993 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 05:40:02,994 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 05:40:02,997 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 05:40:02,997 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 05:40:01" (1/3) ... [2021-11-20 05:40:02,998 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6dbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:40:02, skipping insertion in model container [2021-11-20 05:40:02,998 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 05:40:02" (2/3) ... [2021-11-20 05:40:02,999 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2cd6dbae and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 05:40:02, skipping insertion in model container [2021-11-20 05:40:02,999 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:02" (3/3) ... [2021-11-20 05:40:03,001 INFO L111 eAbstractionObserver]: Analyzing ICFG memleaks_test13_1.i [2021-11-20 05:40:03,012 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 05:40:03,012 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 15 error locations. [2021-11-20 05:40:03,073 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 05:40:03,081 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 05:40:03,082 INFO L340 AbstractCegarLoop]: Starting to check reachability of 15 error locations. [2021-11-20 05:40:03,112 INFO L276 IsEmpty]: Start isEmpty. Operand has 49 states, 25 states have (on average 1.68) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:40:03,120 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:40:03,120 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:03,121 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:03,122 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting ldv_list_addErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:03,128 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:03,129 INFO L85 PathProgramCache]: Analyzing trace with hash 1806778067, now seen corresponding path program 1 times [2021-11-20 05:40:03,141 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:03,142 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [65265801] [2021-11-20 05:40:03,142 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:03,143 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:03,143 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:03,150 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:03,191 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2021-11-20 05:40:03,283 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:03,287 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:40:03,293 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:03,595 INFO L354 Elim1Store]: treesize reduction 12, result has 40.0 percent of original size [2021-11-20 05:40:03,596 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 15 treesize of output 20 [2021-11-20 05:40:03,699 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:03,699 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:03,923 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:03,924 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:03,924 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [65265801] [2021-11-20 05:40:03,925 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [65265801] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:03,925 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:03,925 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 4] imperfect sequences [] total 9 [2021-11-20 05:40:03,927 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1311938919] [2021-11-20 05:40:03,928 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:03,932 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2021-11-20 05:40:03,932 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:03,959 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2021-11-20 05:40:03,960 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=26, Invalid=84, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:40:03,964 INFO L87 Difference]: Start difference. First operand has 49 states, 25 states have (on average 1.68) internal successors, (42), 41 states have internal predecessors, (42), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:04,373 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:04,373 INFO L93 Difference]: Finished difference Result 50 states and 51 transitions. [2021-11-20 05:40:04,375 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 05:40:04,376 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 05:40:04,377 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:04,385 INFO L225 Difference]: With dead ends: 50 [2021-11-20 05:40:04,385 INFO L226 Difference]: Without dead ends: 48 [2021-11-20 05:40:04,387 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 11 SyntacticMatches, 4 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 12 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=65, Invalid=145, Unknown=0, NotChecked=0, Total=210 [2021-11-20 05:40:04,391 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 114 mSDsluCounter, 43 mSDsCounter, 0 mSdLazyCounter, 127 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 116 SdHoareTripleChecker+Valid, 70 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 127 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 12 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:04,392 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [116 Valid, 70 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 127 Invalid, 0 Unknown, 12 Unchecked, 0.3s Time] [2021-11-20 05:40:04,421 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 48 states. [2021-11-20 05:40:04,435 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 48 to 46. [2021-11-20 05:40:04,437 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 24 states have (on average 1.625) internal successors, (39), 38 states have internal predecessors, (39), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:40:04,439 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 47 transitions. [2021-11-20 05:40:04,440 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 47 transitions. Word has length 12 [2021-11-20 05:40:04,440 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:04,441 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 47 transitions. [2021-11-20 05:40:04,441 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 10 states have (on average 1.8) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:04,441 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 47 transitions. [2021-11-20 05:40:04,442 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:40:04,442 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:04,442 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:04,458 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:04,654 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:04,654 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:04,655 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:04,655 INFO L85 PathProgramCache]: Analyzing trace with hash 1806778068, now seen corresponding path program 1 times [2021-11-20 05:40:04,656 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:04,656 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1226991667] [2021-11-20 05:40:04,656 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:04,656 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:04,656 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:04,661 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:04,703 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2021-11-20 05:40:04,748 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:04,752 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 15 conjunts are in the unsatisfiable core [2021-11-20 05:40:04,753 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:07,082 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:40:07,083 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 28 treesize of output 30 [2021-11-20 05:40:07,215 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:07,216 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:26,463 WARN L227 SmtUtils]: Spent 6.02s on a formula simplification that was a NOOP. DAG size: 36 (called from [L 360] de.uni_freiburg.informatik.ultimate.lib.modelcheckerutils.smt.predicates.PredicateUnifier.getOrConstructPredicate) [2021-11-20 05:40:26,645 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:26,645 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:26,646 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1226991667] [2021-11-20 05:40:26,646 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1226991667] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:26,646 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:26,646 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 6] imperfect sequences [] total 12 [2021-11-20 05:40:26,646 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1042736873] [2021-11-20 05:40:26,647 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:26,648 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:40:26,648 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:26,648 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:40:26,649 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=139, Unknown=5, NotChecked=0, Total=182 [2021-11-20 05:40:26,649 INFO L87 Difference]: Start difference. First operand 46 states and 47 transitions. Second operand has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:27,178 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:27,178 INFO L93 Difference]: Finished difference Result 59 states and 63 transitions. [2021-11-20 05:40:27,180 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:40:27,180 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 12 [2021-11-20 05:40:27,180 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:27,183 INFO L225 Difference]: With dead ends: 59 [2021-11-20 05:40:27,183 INFO L226 Difference]: Without dead ends: 59 [2021-11-20 05:40:27,183 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 13 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 20.8s TimeCoverageRelationStatistics Valid=44, Invalid=161, Unknown=5, NotChecked=0, Total=210 [2021-11-20 05:40:27,185 INFO L933 BasicCegarLoop]: 45 mSDtfsCounter, 22 mSDsluCounter, 116 mSDsCounter, 0 mSdLazyCounter, 115 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 161 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 115 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 90 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:27,185 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [23 Valid, 161 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 115 Invalid, 0 Unknown, 90 Unchecked, 0.5s Time] [2021-11-20 05:40:27,186 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2021-11-20 05:40:27,197 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 57. [2021-11-20 05:40:27,198 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 57 states, 31 states have (on average 1.5161290322580645) internal successors, (47), 46 states have internal predecessors, (47), 6 states have call successors, (6), 5 states have call predecessors, (6), 6 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2021-11-20 05:40:27,199 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 57 states to 57 states and 60 transitions. [2021-11-20 05:40:27,200 INFO L78 Accepts]: Start accepts. Automaton has 57 states and 60 transitions. Word has length 12 [2021-11-20 05:40:27,200 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:27,200 INFO L470 AbstractCegarLoop]: Abstraction has 57 states and 60 transitions. [2021-11-20 05:40:27,200 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 1.3846153846153846) internal successors, (18), 11 states have internal predecessors, (18), 4 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:27,201 INFO L276 IsEmpty]: Start isEmpty. Operand 57 states and 60 transitions. [2021-11-20 05:40:27,201 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2021-11-20 05:40:27,201 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:27,202 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:27,219 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:27,412 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:27,412 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:27,413 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:27,413 INFO L85 PathProgramCache]: Analyzing trace with hash -745378893, now seen corresponding path program 1 times [2021-11-20 05:40:27,413 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:27,414 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1742694933] [2021-11-20 05:40:27,414 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:27,414 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:27,414 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:27,415 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:27,417 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2021-11-20 05:40:27,462 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:27,464 INFO L263 TraceCheckSpWp]: Trace formula consists of 54 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:40:27,465 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:27,564 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:27,565 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:27,660 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:27,660 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:27,660 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1742694933] [2021-11-20 05:40:27,660 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1742694933] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:27,661 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:27,661 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:40:27,661 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2080564393] [2021-11-20 05:40:27,661 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:27,661 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:40:27,662 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:27,662 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:40:27,662 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:40:27,663 INFO L87 Difference]: Start difference. First operand 57 states and 60 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:27,682 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:27,683 INFO L93 Difference]: Finished difference Result 54 states and 55 transitions. [2021-11-20 05:40:27,683 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:40:27,683 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 12 [2021-11-20 05:40:27,684 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:27,685 INFO L225 Difference]: With dead ends: 54 [2021-11-20 05:40:27,685 INFO L226 Difference]: Without dead ends: 54 [2021-11-20 05:40:27,685 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 19 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:40:27,687 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 3 mSDsluCounter, 136 mSDsCounter, 0 mSdLazyCounter, 12 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4 SdHoareTripleChecker+Valid, 185 SdHoareTripleChecker+Invalid, 13 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 12 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:27,688 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4 Valid, 185 Invalid, 13 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 12 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:40:27,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-20 05:40:27,694 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-11-20 05:40:27,694 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.5185185185185186) internal successors, (41), 40 states have internal predecessors, (41), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:40:27,695 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 50 transitions. [2021-11-20 05:40:27,696 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 50 transitions. Word has length 12 [2021-11-20 05:40:27,696 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:27,696 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 50 transitions. [2021-11-20 05:40:27,696 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:27,697 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 50 transitions. [2021-11-20 05:40:27,697 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:40:27,697 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:27,698 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:27,711 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:27,911 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:27,911 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:27,912 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:27,912 INFO L85 PathProgramCache]: Analyzing trace with hash 177362515, now seen corresponding path program 1 times [2021-11-20 05:40:27,912 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:27,913 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1491968978] [2021-11-20 05:40:27,913 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:27,913 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:27,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:27,914 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:27,916 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2021-11-20 05:40:27,965 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:27,967 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:40:27,968 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:28,024 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:28,024 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:28,082 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:28,082 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:28,082 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1491968978] [2021-11-20 05:40:28,082 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1491968978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:28,082 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:28,082 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5, 5] imperfect sequences [] total 5 [2021-11-20 05:40:28,083 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1884629858] [2021-11-20 05:40:28,083 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:28,083 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:40:28,083 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:28,084 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:40:28,084 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:40:28,084 INFO L87 Difference]: Start difference. First operand 49 states and 50 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:28,104 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:28,105 INFO L93 Difference]: Finished difference Result 54 states and 54 transitions. [2021-11-20 05:40:28,106 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:40:28,106 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 13 [2021-11-20 05:40:28,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:28,107 INFO L225 Difference]: With dead ends: 54 [2021-11-20 05:40:28,107 INFO L226 Difference]: Without dead ends: 54 [2021-11-20 05:40:28,107 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 24 GetRequests, 21 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:40:28,109 INFO L933 BasicCegarLoop]: 49 mSDtfsCounter, 4 mSDsluCounter, 137 mSDsCounter, 0 mSdLazyCounter, 11 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 6 SdHoareTripleChecker+Valid, 186 SdHoareTripleChecker+Invalid, 11 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 11 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:28,110 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [6 Valid, 186 Invalid, 11 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 11 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 05:40:28,110 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 54 states. [2021-11-20 05:40:28,122 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 54 to 49. [2021-11-20 05:40:28,124 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 49 states, 27 states have (on average 1.4814814814814814) internal successors, (40), 40 states have internal predecessors, (40), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:40:28,125 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 49 states to 49 states and 49 transitions. [2021-11-20 05:40:28,126 INFO L78 Accepts]: Start accepts. Automaton has 49 states and 49 transitions. Word has length 13 [2021-11-20 05:40:28,126 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:28,127 INFO L470 AbstractCegarLoop]: Abstraction has 49 states and 49 transitions. [2021-11-20 05:40:28,129 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), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:28,129 INFO L276 IsEmpty]: Start isEmpty. Operand 49 states and 49 transitions. [2021-11-20 05:40:28,130 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:40:28,130 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:28,130 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:28,149 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:28,342 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:28,342 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:28,343 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:28,343 INFO L85 PathProgramCache]: Analyzing trace with hash -1630091948, now seen corresponding path program 1 times [2021-11-20 05:40:28,343 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:28,343 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1711108978] [2021-11-20 05:40:28,343 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:28,344 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:28,344 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:28,345 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:28,346 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2021-11-20 05:40:28,384 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:28,386 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 7 conjunts are in the unsatisfiable core [2021-11-20 05:40:28,387 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:28,588 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:28,588 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:28,728 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:28,728 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:28,728 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1711108978] [2021-11-20 05:40:28,728 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1711108978] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:28,728 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:28,728 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 05:40:28,729 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2070257483] [2021-11-20 05:40:28,729 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:28,729 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:40:28,729 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:28,730 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:40:28,730 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:40:28,730 INFO L87 Difference]: Start difference. First operand 49 states and 49 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:29,024 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:29,024 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-11-20 05:40:29,025 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 05:40:29,025 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-20 05:40:29,025 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:29,026 INFO L225 Difference]: With dead ends: 47 [2021-11-20 05:40:29,026 INFO L226 Difference]: Without dead ends: 47 [2021-11-20 05:40:29,026 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 15 SyntacticMatches, 1 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=50, Invalid=106, Unknown=0, NotChecked=0, Total=156 [2021-11-20 05:40:29,028 INFO L933 BasicCegarLoop]: 25 mSDtfsCounter, 108 mSDsluCounter, 33 mSDsCounter, 0 mSdLazyCounter, 120 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 110 SdHoareTripleChecker+Valid, 58 SdHoareTripleChecker+Invalid, 137 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 120 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:29,028 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [110 Valid, 58 Invalid, 137 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 120 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:40:29,029 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-20 05:40:29,033 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-20 05:40:29,033 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 27 states have (on average 1.4074074074074074) internal successors, (38), 38 states have internal predecessors, (38), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2021-11-20 05:40:29,034 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-20 05:40:29,035 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 13 [2021-11-20 05:40:29,035 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:29,035 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-20 05:40:29,036 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:29,036 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-20 05:40:29,036 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 14 [2021-11-20 05:40:29,037 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:29,037 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:29,047 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (6)] Ended with exit code 0 [2021-11-20 05:40:29,247 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:29,250 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:29,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:29,250 INFO L85 PathProgramCache]: Analyzing trace with hash -1630091947, now seen corresponding path program 1 times [2021-11-20 05:40:29,251 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:29,251 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [754828325] [2021-11-20 05:40:29,251 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:29,251 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:29,252 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:29,252 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:29,283 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2021-11-20 05:40:29,300 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:29,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 52 conjuncts, 10 conjunts are in the unsatisfiable core [2021-11-20 05:40:29,305 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:29,517 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:29,517 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:29,940 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:29,940 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:29,941 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [754828325] [2021-11-20 05:40:29,941 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [754828325] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:29,941 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:29,941 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 8 [2021-11-20 05:40:29,941 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [472260412] [2021-11-20 05:40:29,941 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:29,942 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2021-11-20 05:40:29,942 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:29,942 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2021-11-20 05:40:29,942 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=23, Invalid=67, Unknown=0, NotChecked=0, Total=90 [2021-11-20 05:40:29,943 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:30,617 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:30,618 INFO L93 Difference]: Finished difference Result 57 states and 56 transitions. [2021-11-20 05:40:30,619 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:40:30,619 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 13 [2021-11-20 05:40:30,619 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:30,620 INFO L225 Difference]: With dead ends: 57 [2021-11-20 05:40:30,620 INFO L226 Difference]: Without dead ends: 57 [2021-11-20 05:40:30,620 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 28 GetRequests, 16 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=55, Invalid=127, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:40:30,621 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 69 mSDsluCounter, 51 mSDsCounter, 0 mSdLazyCounter, 155 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 81 SdHoareTripleChecker+Invalid, 166 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 155 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:30,622 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [71 Valid, 81 Invalid, 166 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 155 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2021-11-20 05:40:30,623 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 57 states. [2021-11-20 05:40:30,627 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 57 to 54. [2021-11-20 05:40:30,627 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 54 states, 32 states have (on average 1.34375) internal successors, (43), 43 states have internal predecessors, (43), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:30,629 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 54 states to 54 states and 54 transitions. [2021-11-20 05:40:30,629 INFO L78 Accepts]: Start accepts. Automaton has 54 states and 54 transitions. Word has length 13 [2021-11-20 05:40:30,629 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:30,629 INFO L470 AbstractCegarLoop]: Abstraction has 54 states and 54 transitions. [2021-11-20 05:40:30,630 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.2222222222222223) internal successors, (20), 7 states have internal predecessors, (20), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:30,630 INFO L276 IsEmpty]: Start isEmpty. Operand 54 states and 54 transitions. [2021-11-20 05:40:30,630 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:40:30,631 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:30,631 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:30,642 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:30,831 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:30,832 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting __ldv_list_addErr0REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:30,832 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:30,832 INFO L85 PathProgramCache]: Analyzing trace with hash 1195264903, now seen corresponding path program 1 times [2021-11-20 05:40:30,832 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:30,833 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [247654044] [2021-11-20 05:40:30,833 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:30,833 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:30,833 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:30,834 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:30,835 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2021-11-20 05:40:30,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:30,888 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 12 conjunts are in the unsatisfiable core [2021-11-20 05:40:30,889 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:30,960 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 22 treesize of output 14 [2021-11-20 05:40:31,012 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:31,012 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:31,060 INFO L354 Elim1Store]: treesize reduction 5, result has 58.3 percent of original size [2021-11-20 05:40:31,061 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 21 treesize of output 20 [2021-11-20 05:40:31,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:31,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:31,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [247654044] [2021-11-20 05:40:31,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [247654044] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:31,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:31,103 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 7 [2021-11-20 05:40:31,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [568132754] [2021-11-20 05:40:31,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:31,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2021-11-20 05:40:31,104 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:31,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2021-11-20 05:40:31,105 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 05:40:31,105 INFO L87 Difference]: Start difference. First operand 54 states and 54 transitions. Second operand has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:31,441 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:31,441 INFO L93 Difference]: Finished difference Result 56 states and 55 transitions. [2021-11-20 05:40:31,442 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:40:31,443 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 15 [2021-11-20 05:40:31,443 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:31,444 INFO L225 Difference]: With dead ends: 56 [2021-11-20 05:40:31,444 INFO L226 Difference]: Without dead ends: 56 [2021-11-20 05:40:31,444 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 20 SyntacticMatches, 2 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=46, Invalid=136, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:40:31,445 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 40 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 99 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 40 SdHoareTripleChecker+Valid, 157 SdHoareTripleChecker+Invalid, 105 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 99 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:31,446 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [40 Valid, 157 Invalid, 105 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 99 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2021-11-20 05:40:31,446 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 56 states. [2021-11-20 05:40:31,450 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 56 to 53. [2021-11-20 05:40:31,450 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 53 states, 32 states have (on average 1.3125) internal successors, (42), 42 states have internal predecessors, (42), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:31,451 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 53 states to 53 states and 53 transitions. [2021-11-20 05:40:31,451 INFO L78 Accepts]: Start accepts. Automaton has 53 states and 53 transitions. Word has length 15 [2021-11-20 05:40:31,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:31,452 INFO L470 AbstractCegarLoop]: Abstraction has 53 states and 53 transitions. [2021-11-20 05:40:31,452 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 2.3333333333333335) internal successors, (14), 6 states have internal predecessors, (14), 2 states have call successors, (4), 4 states have call predecessors, (4), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:31,452 INFO L276 IsEmpty]: Start isEmpty. Operand 53 states and 53 transitions. [2021-11-20 05:40:31,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 16 [2021-11-20 05:40:31,453 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:31,453 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:31,480 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2021-11-20 05:40:31,664 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:31,665 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting __ldv_list_addErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:31,665 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:31,665 INFO L85 PathProgramCache]: Analyzing trace with hash 1195264904, now seen corresponding path program 1 times [2021-11-20 05:40:31,665 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:31,666 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [591903851] [2021-11-20 05:40:31,666 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:31,666 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:31,666 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:31,667 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:31,668 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2021-11-20 05:40:31,732 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:31,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 27 conjunts are in the unsatisfiable core [2021-11-20 05:40:31,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:34,079 INFO L354 Elim1Store]: treesize reduction 15, result has 25.0 percent of original size [2021-11-20 05:40:34,080 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 25 treesize of output 27 [2021-11-20 05:40:34,299 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 05:40:34,307 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2021-11-20 05:40:34,436 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:34,436 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:48,103 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:48,103 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:48,103 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [591903851] [2021-11-20 05:40:48,103 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [591903851] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:48,103 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:48,104 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 18 [2021-11-20 05:40:48,104 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [662415265] [2021-11-20 05:40:48,104 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:48,104 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 20 states [2021-11-20 05:40:48,105 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:48,105 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 20 interpolants. [2021-11-20 05:40:48,106 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=53, Invalid=321, Unknown=6, NotChecked=0, Total=380 [2021-11-20 05:40:48,106 INFO L87 Difference]: Start difference. First operand 53 states and 53 transitions. Second operand has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:53,352 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:53,352 INFO L93 Difference]: Finished difference Result 55 states and 54 transitions. [2021-11-20 05:40:53,353 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 05:40:53,353 INFO L78 Accepts]: Start accepts. Automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 15 [2021-11-20 05:40:53,353 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:53,354 INFO L225 Difference]: With dead ends: 55 [2021-11-20 05:40:53,354 INFO L226 Difference]: Without dead ends: 55 [2021-11-20 05:40:53,355 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 36 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 26 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 63 ImplicationChecksByTransitivity, 19.8s TimeCoverageRelationStatistics Valid=144, Invalid=604, Unknown=8, NotChecked=0, Total=756 [2021-11-20 05:40:53,355 INFO L933 BasicCegarLoop]: 26 mSDtfsCounter, 79 mSDsluCounter, 166 mSDsCounter, 0 mSdLazyCounter, 212 mSolverCounterSat, 35 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 79 SdHoareTripleChecker+Valid, 192 SdHoareTripleChecker+Invalid, 309 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 35 IncrementalHoareTripleChecker+Valid, 212 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 62 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:53,356 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [79 Valid, 192 Invalid, 309 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [35 Valid, 212 Invalid, 0 Unknown, 62 Unchecked, 0.7s Time] [2021-11-20 05:40:53,356 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 55 states. [2021-11-20 05:40:53,360 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 55 to 52. [2021-11-20 05:40:53,360 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 52 states, 32 states have (on average 1.28125) internal successors, (41), 41 states have internal predecessors, (41), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:53,361 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 52 states to 52 states and 52 transitions. [2021-11-20 05:40:53,362 INFO L78 Accepts]: Start accepts. Automaton has 52 states and 52 transitions. Word has length 15 [2021-11-20 05:40:53,362 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:53,362 INFO L470 AbstractCegarLoop]: Abstraction has 52 states and 52 transitions. [2021-11-20 05:40:53,362 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 20 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 15 states have internal predecessors, (22), 6 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:53,363 INFO L276 IsEmpty]: Start isEmpty. Operand 52 states and 52 transitions. [2021-11-20 05:40:53,363 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:40:53,363 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:53,364 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:53,372 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:53,568 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:53,568 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting __ldv_list_addErr2REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:53,569 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:53,569 INFO L85 PathProgramCache]: Analyzing trace with hash -1601493656, now seen corresponding path program 1 times [2021-11-20 05:40:53,569 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:53,569 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1147396942] [2021-11-20 05:40:53,569 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:53,569 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:53,569 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:53,570 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:53,571 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2021-11-20 05:40:53,627 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:53,630 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 8 conjunts are in the unsatisfiable core [2021-11-20 05:40:53,631 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:53,641 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 [2021-11-20 05:40:53,744 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:53,744 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:53,883 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:53,883 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:53,883 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1147396942] [2021-11-20 05:40:53,883 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1147396942] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:53,883 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:53,884 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8, 8] imperfect sequences [] total 8 [2021-11-20 05:40:53,884 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [609874775] [2021-11-20 05:40:53,884 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:53,884 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2021-11-20 05:40:53,884 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:53,885 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2021-11-20 05:40:53,885 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2021-11-20 05:40:53,885 INFO L87 Difference]: Start difference. First operand 52 states and 52 transitions. Second operand has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:54,167 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:54,167 INFO L93 Difference]: Finished difference Result 53 states and 52 transitions. [2021-11-20 05:40:54,169 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2021-11-20 05:40:54,169 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 16 [2021-11-20 05:40:54,170 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:54,170 INFO L225 Difference]: With dead ends: 53 [2021-11-20 05:40:54,170 INFO L226 Difference]: Without dead ends: 53 [2021-11-20 05:40:54,170 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 32 GetRequests, 18 SyntacticMatches, 5 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=23, Invalid=87, Unknown=0, NotChecked=0, Total=110 [2021-11-20 05:40:54,171 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 27 mSDsluCounter, 122 mSDsCounter, 0 mSdLazyCounter, 169 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 29 SdHoareTripleChecker+Valid, 152 SdHoareTripleChecker+Invalid, 172 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 169 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:54,172 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [29 Valid, 152 Invalid, 172 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 169 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2021-11-20 05:40:54,172 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 53 states. [2021-11-20 05:40:54,176 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 53 to 50. [2021-11-20 05:40:54,176 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 50 states, 32 states have (on average 1.21875) internal successors, (39), 39 states have internal predecessors, (39), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:54,177 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 50 states to 50 states and 50 transitions. [2021-11-20 05:40:54,177 INFO L78 Accepts]: Start accepts. Automaton has 50 states and 50 transitions. Word has length 16 [2021-11-20 05:40:54,177 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:54,178 INFO L470 AbstractCegarLoop]: Abstraction has 50 states and 50 transitions. [2021-11-20 05:40:54,178 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.5) internal successors, (12), 6 states have internal predecessors, (12), 3 states have call successors, (3), 3 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:54,178 INFO L276 IsEmpty]: Start isEmpty. Operand 50 states and 50 transitions. [2021-11-20 05:40:54,179 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2021-11-20 05:40:54,179 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:54,179 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:54,190 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:54,384 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:54,384 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting __ldv_list_addErr3REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:54,384 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:54,385 INFO L85 PathProgramCache]: Analyzing trace with hash -1601493655, now seen corresponding path program 1 times [2021-11-20 05:40:54,385 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:54,385 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1127047573] [2021-11-20 05:40:54,385 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:54,385 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:54,385 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:54,386 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:54,394 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2021-11-20 05:40:54,455 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:54,459 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 17 conjunts are in the unsatisfiable core [2021-11-20 05:40:54,461 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:54,489 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 [2021-11-20 05:40:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:54,709 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:55,515 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:55,516 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:55,516 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1127047573] [2021-11-20 05:40:55,516 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1127047573] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:55,516 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:55,516 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9, 9] imperfect sequences [] total 17 [2021-11-20 05:40:55,517 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [952198213] [2021-11-20 05:40:55,517 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:55,517 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2021-11-20 05:40:55,517 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:55,518 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2021-11-20 05:40:55,518 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=41, Invalid=265, Unknown=0, NotChecked=0, Total=306 [2021-11-20 05:40:55,518 INFO L87 Difference]: Start difference. First operand 50 states and 50 transitions. Second operand has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:56,388 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:56,388 INFO L93 Difference]: Finished difference Result 51 states and 50 transitions. [2021-11-20 05:40:56,389 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 05:40:56,389 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 16 [2021-11-20 05:40:56,389 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:56,390 INFO L225 Difference]: With dead ends: 51 [2021-11-20 05:40:56,390 INFO L226 Difference]: Without dead ends: 51 [2021-11-20 05:40:56,390 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 33 GetRequests, 14 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=59, Invalid=361, Unknown=0, NotChecked=0, Total=420 [2021-11-20 05:40:56,391 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 48 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 230 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 50 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 236 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 230 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:56,391 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [50 Valid, 237 Invalid, 236 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 230 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2021-11-20 05:40:56,392 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 51 states. [2021-11-20 05:40:56,395 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 51 to 48. [2021-11-20 05:40:56,395 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 48 states, 32 states have (on average 1.15625) internal successors, (37), 37 states have internal predecessors, (37), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:56,396 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 48 states to 48 states and 48 transitions. [2021-11-20 05:40:56,396 INFO L78 Accepts]: Start accepts. Automaton has 48 states and 48 transitions. Word has length 16 [2021-11-20 05:40:56,396 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:56,397 INFO L470 AbstractCegarLoop]: Abstraction has 48 states and 48 transitions. [2021-11-20 05:40:56,397 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 17 states have (on average 1.2941176470588236) internal successors, (22), 12 states have internal predecessors, (22), 5 states have call successors, (5), 5 states have call predecessors, (5), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:56,397 INFO L276 IsEmpty]: Start isEmpty. Operand 48 states and 48 transitions. [2021-11-20 05:40:56,398 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:40:56,398 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:56,398 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:56,413 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:56,606 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:56,609 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting __ldv_list_addErr6REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:56,609 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:56,610 INFO L85 PathProgramCache]: Analyzing trace with hash -1437110869, now seen corresponding path program 1 times [2021-11-20 05:40:56,610 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:56,610 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1282896415] [2021-11-20 05:40:56,610 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:56,610 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:56,610 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:56,611 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:56,612 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2021-11-20 05:40:56,674 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:56,678 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:40:56,679 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:56,741 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:56,741 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:56,792 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:56,793 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:56,793 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1282896415] [2021-11-20 05:40:56,793 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1282896415] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:56,793 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:56,793 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4, 4] imperfect sequences [] total 4 [2021-11-20 05:40:56,794 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1216927439] [2021-11-20 05:40:56,794 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:56,794 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 05:40:56,794 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:56,795 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 05:40:56,795 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 05:40:56,795 INFO L87 Difference]: Start difference. First operand 48 states and 48 transitions. Second operand has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:56,898 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:56,898 INFO L93 Difference]: Finished difference Result 47 states and 47 transitions. [2021-11-20 05:40:56,898 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2021-11-20 05:40:56,898 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2021-11-20 05:40:56,899 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:56,899 INFO L225 Difference]: With dead ends: 47 [2021-11-20 05:40:56,899 INFO L226 Difference]: Without dead ends: 47 [2021-11-20 05:40:56,900 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 29 SyntacticMatches, 2 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2021-11-20 05:40:56,900 INFO L933 BasicCegarLoop]: 30 mSDtfsCounter, 12 mSDsluCounter, 58 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 13 SdHoareTripleChecker+Valid, 88 SdHoareTripleChecker+Invalid, 41 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:56,901 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [13 Valid, 88 Invalid, 41 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:40:56,901 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 47 states. [2021-11-20 05:40:56,903 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 47 to 47. [2021-11-20 05:40:56,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 47 states, 32 states have (on average 1.125) internal successors, (36), 36 states have internal predecessors, (36), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:56,905 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 47 states to 47 states and 47 transitions. [2021-11-20 05:40:56,905 INFO L78 Accepts]: Start accepts. Automaton has 47 states and 47 transitions. Word has length 18 [2021-11-20 05:40:56,905 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:56,905 INFO L470 AbstractCegarLoop]: Abstraction has 47 states and 47 transitions. [2021-11-20 05:40:56,906 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 2 states have call successors, (3), 2 states have call predecessors, (3), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2021-11-20 05:40:56,906 INFO L276 IsEmpty]: Start isEmpty. Operand 47 states and 47 transitions. [2021-11-20 05:40:56,906 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:40:56,907 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:56,907 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:56,917 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (12)] Ended with exit code 0 [2021-11-20 05:40:57,108 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:57,108 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting __ldv_list_addErr7REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:57,108 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:57,109 INFO L85 PathProgramCache]: Analyzing trace with hash -1437110868, now seen corresponding path program 1 times [2021-11-20 05:40:57,109 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:57,109 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1287204716] [2021-11-20 05:40:57,109 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:57,109 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:57,109 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:57,110 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:57,121 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2021-11-20 05:40:57,183 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:57,187 INFO L263 TraceCheckSpWp]: Trace formula consists of 103 conjuncts, 9 conjunts are in the unsatisfiable core [2021-11-20 05:40:57,188 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:57,385 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:57,385 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:57,665 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:40:57,856 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:57,856 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:57,856 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1287204716] [2021-11-20 05:40:57,856 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1287204716] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:57,856 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:57,856 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 13 [2021-11-20 05:40:57,856 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1238508852] [2021-11-20 05:40:57,856 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:57,857 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:40:57,857 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:57,857 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:40:57,857 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:40:57,858 INFO L87 Difference]: Start difference. First operand 47 states and 47 transitions. Second operand has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:58,420 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:58,421 INFO L93 Difference]: Finished difference Result 46 states and 46 transitions. [2021-11-20 05:40:58,422 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:40:58,422 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 18 [2021-11-20 05:40:58,423 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:58,423 INFO L225 Difference]: With dead ends: 46 [2021-11-20 05:40:58,423 INFO L226 Difference]: Without dead ends: 46 [2021-11-20 05:40:58,424 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 32 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=76, Invalid=266, Unknown=0, NotChecked=0, Total=342 [2021-11-20 05:40:58,425 INFO L933 BasicCegarLoop]: 27 mSDtfsCounter, 63 mSDsluCounter, 210 mSDsCounter, 0 mSdLazyCounter, 103 mSolverCounterSat, 11 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 64 SdHoareTripleChecker+Valid, 237 SdHoareTripleChecker+Invalid, 114 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 11 IncrementalHoareTripleChecker+Valid, 103 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:58,425 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [64 Valid, 237 Invalid, 114 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [11 Valid, 103 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:40:58,426 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 46 states. [2021-11-20 05:40:58,428 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 46 to 46. [2021-11-20 05:40:58,428 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 46 states, 32 states have (on average 1.09375) internal successors, (35), 35 states have internal predecessors, (35), 5 states have call successors, (5), 5 states have call predecessors, (5), 6 states have return successors, (6), 5 states have call predecessors, (6), 5 states have call successors, (6) [2021-11-20 05:40:58,429 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 46 states to 46 states and 46 transitions. [2021-11-20 05:40:58,430 INFO L78 Accepts]: Start accepts. Automaton has 46 states and 46 transitions. Word has length 18 [2021-11-20 05:40:58,430 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:58,430 INFO L470 AbstractCegarLoop]: Abstraction has 46 states and 46 transitions. [2021-11-20 05:40:58,430 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 11 states have (on average 2.5454545454545454) internal successors, (28), 10 states have internal predecessors, (28), 4 states have call successors, (6), 6 states have call predecessors, (6), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2021-11-20 05:40:58,430 INFO L276 IsEmpty]: Start isEmpty. Operand 46 states and 46 transitions. [2021-11-20 05:40:58,431 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2021-11-20 05:40:58,431 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:58,431 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:58,456 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (13)] Ended with exit code 0 [2021-11-20 05:40:58,643 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:58,643 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:58,643 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:58,643 INFO L85 PathProgramCache]: Analyzing trace with hash -245688502, now seen corresponding path program 1 times [2021-11-20 05:40:58,644 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:58,644 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1252879300] [2021-11-20 05:40:58,644 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:58,644 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:58,644 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:58,645 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:58,646 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2021-11-20 05:40:58,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:58,697 INFO L263 TraceCheckSpWp]: Trace formula consists of 69 conjuncts, 4 conjunts are in the unsatisfiable core [2021-11-20 05:40:58,698 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:58,765 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:58,765 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:58,835 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:58,835 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:40:58,835 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1252879300] [2021-11-20 05:40:58,835 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1252879300] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:40:58,836 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:40:58,836 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3, 3] imperfect sequences [] total 3 [2021-11-20 05:40:58,836 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1768593265] [2021-11-20 05:40:58,836 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:40:58,836 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2021-11-20 05:40:58,836 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:40:58,837 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2021-11-20 05:40:58,837 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:40:58,837 INFO L87 Difference]: Start difference. First operand 46 states and 46 transitions. Second operand has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:58,992 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:40:58,992 INFO L93 Difference]: Finished difference Result 48 states and 47 transitions. [2021-11-20 05:40:58,992 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2021-11-20 05:40:58,993 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) Word has length 18 [2021-11-20 05:40:58,993 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:40:58,993 INFO L225 Difference]: With dead ends: 48 [2021-11-20 05:40:58,993 INFO L226 Difference]: Without dead ends: 35 [2021-11-20 05:40:58,994 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 32 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2021-11-20 05:40:58,994 INFO L933 BasicCegarLoop]: 29 mSDtfsCounter, 16 mSDsluCounter, 17 mSDsCounter, 0 mSdLazyCounter, 45 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 17 SdHoareTripleChecker+Valid, 46 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 45 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2021-11-20 05:40:58,995 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [17 Valid, 46 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 45 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2021-11-20 05:40:58,995 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 35 states. [2021-11-20 05:40:58,997 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 35 to 35. [2021-11-20 05:40:58,998 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 35 states, 24 states have (on average 1.0833333333333333) internal successors, (26), 26 states have internal predecessors, (26), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:40:58,999 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 35 states to 35 states and 34 transitions. [2021-11-20 05:40:58,999 INFO L78 Accepts]: Start accepts. Automaton has 35 states and 34 transitions. Word has length 18 [2021-11-20 05:40:58,999 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:40:58,999 INFO L470 AbstractCegarLoop]: Abstraction has 35 states and 34 transitions. [2021-11-20 05:40:58,999 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.666666666666667) internal successors, (14), 4 states have internal predecessors, (14), 1 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 1 states have call predecessors, (2), 1 states have call successors, (2) [2021-11-20 05:40:58,999 INFO L276 IsEmpty]: Start isEmpty. Operand 35 states and 34 transitions. [2021-11-20 05:40:59,011 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2021-11-20 05:40:59,012 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:40:59,012 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:40:59,025 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2021-11-20 05:40:59,212 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:40:59,212 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:40:59,213 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:40:59,213 INFO L85 PathProgramCache]: Analyzing trace with hash -1690332874, now seen corresponding path program 1 times [2021-11-20 05:40:59,213 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:40:59,213 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2110454022] [2021-11-20 05:40:59,214 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:40:59,214 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:40:59,214 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:40:59,217 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:40:59,260 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2021-11-20 05:40:59,316 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:40:59,322 INFO L263 TraceCheckSpWp]: Trace formula consists of 126 conjuncts, 11 conjunts are in the unsatisfiable core [2021-11-20 05:40:59,324 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:40:59,639 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:40:59,640 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:40:59,929 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 6 [2021-11-20 05:41:00,150 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:41:00,150 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 16 treesize of output 20 [2021-11-20 05:41:00,387 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:41:00,387 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:41:00,387 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2110454022] [2021-11-20 05:41:00,388 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2110454022] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:41:00,388 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:41:00,388 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6, 7] imperfect sequences [] total 13 [2021-11-20 05:41:00,388 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1816859264] [2021-11-20 05:41:00,388 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:41:00,389 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2021-11-20 05:41:00,389 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:41:00,389 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2021-11-20 05:41:00,389 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=38, Invalid=144, Unknown=0, NotChecked=0, Total=182 [2021-11-20 05:41:00,389 INFO L87 Difference]: Start difference. First operand 35 states and 34 transitions. Second operand has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:41:00,928 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:41:00,929 INFO L93 Difference]: Finished difference Result 34 states and 33 transitions. [2021-11-20 05:41:00,930 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2021-11-20 05:41:00,930 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 27 [2021-11-20 05:41:00,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:41:00,931 INFO L225 Difference]: With dead ends: 34 [2021-11-20 05:41:00,931 INFO L226 Difference]: Without dead ends: 34 [2021-11-20 05:41:00,932 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 55 GetRequests, 39 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.6s TimeCoverageRelationStatistics Valid=65, Invalid=207, Unknown=0, NotChecked=0, Total=272 [2021-11-20 05:41:00,932 INFO L933 BasicCegarLoop]: 23 mSDtfsCounter, 47 mSDsluCounter, 99 mSDsCounter, 0 mSdLazyCounter, 114 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 49 SdHoareTripleChecker+Valid, 122 SdHoareTripleChecker+Invalid, 121 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 114 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2021-11-20 05:41:00,933 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [49 Valid, 122 Invalid, 121 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 114 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2021-11-20 05:41:00,933 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 34 states. [2021-11-20 05:41:00,935 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 34 to 34. [2021-11-20 05:41:00,935 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 34 states, 24 states have (on average 1.0416666666666667) internal successors, (25), 25 states have internal predecessors, (25), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:41:00,936 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 34 states to 34 states and 33 transitions. [2021-11-20 05:41:00,936 INFO L78 Accepts]: Start accepts. Automaton has 34 states and 33 transitions. Word has length 27 [2021-11-20 05:41:00,936 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:41:00,937 INFO L470 AbstractCegarLoop]: Abstraction has 34 states and 33 transitions. [2021-11-20 05:41:00,937 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 13 states have (on average 3.076923076923077) internal successors, (40), 12 states have internal predecessors, (40), 6 states have call successors, (8), 4 states have call predecessors, (8), 4 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:41:00,937 INFO L276 IsEmpty]: Start isEmpty. Operand 34 states and 33 transitions. [2021-11-20 05:41:00,938 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2021-11-20 05:41:00,938 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:41:00,938 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:41:00,954 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2021-11-20 05:41:01,138 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:41:01,139 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:41:01,139 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:41:01,139 INFO L85 PathProgramCache]: Analyzing trace with hash -860711565, now seen corresponding path program 1 times [2021-11-20 05:41:01,139 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:41:01,139 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1935567991] [2021-11-20 05:41:01,140 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:41:01,140 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:41:01,140 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:41:01,141 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:41:01,144 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2021-11-20 05:41:01,247 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 05:41:01,253 INFO L263 TraceCheckSpWp]: Trace formula consists of 133 conjuncts, 23 conjunts are in the unsatisfiable core [2021-11-20 05:41:01,256 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 05:41:01,381 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 05:41:01,393 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 7 treesize of output 3 [2021-11-20 05:41:01,734 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 30 treesize of output 22 [2021-11-20 05:41:01,737 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 19 treesize of output 11 [2021-11-20 05:41:01,854 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:41:01,854 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2021-11-20 05:41:02,281 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:41:02,281 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 32 treesize of output 36 [2021-11-20 05:41:02,856 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:41:02,856 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 16 treesize of output 20 [2021-11-20 05:41:03,139 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 8 treesize of output 4 [2021-11-20 05:41:03,149 INFO L388 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 8 [2021-11-20 05:41:03,466 INFO L354 Elim1Store]: treesize reduction 0, result has 100.0 percent of original size [2021-11-20 05:41:03,467 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 16 treesize of output 20 [2021-11-20 05:41:04,287 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 05:41:04,288 INFO L139 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2021-11-20 05:41:04,288 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1935567991] [2021-11-20 05:41:04,288 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1935567991] provided 2 perfect and 0 imperfect interpolant sequences [2021-11-20 05:41:04,288 INFO L186 FreeRefinementEngine]: Found 2 perfect and 0 imperfect interpolant sequences. [2021-11-20 05:41:04,288 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11, 11] imperfect sequences [] total 22 [2021-11-20 05:41:04,288 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1556287137] [2021-11-20 05:41:04,288 INFO L85 oduleStraightlineAll]: Using 2 perfect interpolants to construct interpolant automaton [2021-11-20 05:41:04,289 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 23 states [2021-11-20 05:41:04,289 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2021-11-20 05:41:04,289 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 23 interpolants. [2021-11-20 05:41:04,290 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=69, Invalid=437, Unknown=0, NotChecked=0, Total=506 [2021-11-20 05:41:04,290 INFO L87 Difference]: Start difference. First operand 34 states and 33 transitions. Second operand has 23 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:41:05,633 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 05:41:05,633 INFO L93 Difference]: Finished difference Result 33 states and 32 transitions. [2021-11-20 05:41:05,633 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 16 states. [2021-11-20 05:41:05,634 INFO L78 Accepts]: Start accepts. Automaton has has 23 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) Word has length 28 [2021-11-20 05:41:05,634 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 05:41:05,634 INFO L225 Difference]: With dead ends: 33 [2021-11-20 05:41:05,634 INFO L226 Difference]: Without dead ends: 33 [2021-11-20 05:41:05,635 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 66 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 32 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 178 ImplicationChecksByTransitivity, 2.2s TimeCoverageRelationStatistics Valid=184, Invalid=938, Unknown=0, NotChecked=0, Total=1122 [2021-11-20 05:41:05,636 INFO L933 BasicCegarLoop]: 19 mSDtfsCounter, 55 mSDsluCounter, 135 mSDsCounter, 0 mSdLazyCounter, 231 mSolverCounterSat, 38 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 56 SdHoareTripleChecker+Valid, 154 SdHoareTripleChecker+Invalid, 269 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 38 IncrementalHoareTripleChecker+Valid, 231 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 05:41:05,636 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [56 Valid, 154 Invalid, 269 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [38 Valid, 231 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 05:41:05,637 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 33 states. [2021-11-20 05:41:05,638 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 33 to 33. [2021-11-20 05:41:05,638 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 33 states, 24 states have (on average 1.0) internal successors, (24), 24 states have internal predecessors, (24), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2021-11-20 05:41:05,639 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 33 states to 33 states and 32 transitions. [2021-11-20 05:41:05,639 INFO L78 Accepts]: Start accepts. Automaton has 33 states and 32 transitions. Word has length 28 [2021-11-20 05:41:05,639 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 05:41:05,640 INFO L470 AbstractCegarLoop]: Abstraction has 33 states and 32 transitions. [2021-11-20 05:41:05,640 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 23 states, 20 states have (on average 2.1) internal successors, (42), 18 states have internal predecessors, (42), 6 states have call successors, (8), 7 states have call predecessors, (8), 6 states have return successors, (6), 6 states have call predecessors, (6), 4 states have call successors, (6) [2021-11-20 05:41:05,640 INFO L276 IsEmpty]: Start isEmpty. Operand 33 states and 32 transitions. [2021-11-20 05:41:05,641 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 33 [2021-11-20 05:41:05,641 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 05:41:05,641 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:41:05,655 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2021-11-20 05:41:05,844 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:41:05,844 INFO L402 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK === [ldv_list_addErr0REQUIRES_VIOLATION, ldv_list_addErr1REQUIRES_VIOLATION, ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK, LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (and 11 more)] === [2021-11-20 05:41:05,844 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 05:41:05,844 INFO L85 PathProgramCache]: Analyzing trace with hash 1571524617, now seen corresponding path program 1 times [2021-11-20 05:41:05,845 INFO L121 FreeRefinementEngine]: Executing refinement strategy WOLF [2021-11-20 05:41:05,845 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1328341838] [2021-11-20 05:41:05,845 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 05:41:05,845 INFO L168 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2021-11-20 05:41:05,845 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat [2021-11-20 05:41:05,846 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2021-11-20 05:41:05,847 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2021-11-20 05:41:05,946 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:41:05,946 INFO L355 TraceCheck]: Trace is feasible, we will do another trace check, this time with branch encoders. [2021-11-20 05:41:06,032 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is sat [2021-11-20 05:41:06,085 INFO L133 FreeRefinementEngine]: Strategy WOLF found a feasible trace [2021-11-20 05:41:06,085 INFO L628 BasicCegarLoop]: Counterexample is feasible [2021-11-20 05:41:06,086 INFO L764 garLoopResultBuilder]: Registering result UNSAFE for location ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_LEAK (14 of 15 remaining) [2021-11-20 05:41:06,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr0REQUIRES_VIOLATION (13 of 15 remaining) [2021-11-20 05:41:06,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location ldv_list_addErr1REQUIRES_VIOLATION (12 of 15 remaining) [2021-11-20 05:41:06,088 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATION (11 of 15 remaining) [2021-11-20 05:41:06,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATION (10 of 15 remaining) [2021-11-20 05:41:06,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr2REQUIRES_VIOLATION (9 of 15 remaining) [2021-11-20 05:41:06,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location LDV_INIT_LIST_HEADErr3REQUIRES_VIOLATION (8 of 15 remaining) [2021-11-20 05:41:06,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr0REQUIRES_VIOLATION (7 of 15 remaining) [2021-11-20 05:41:06,089 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr1REQUIRES_VIOLATION (6 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr2REQUIRES_VIOLATION (5 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr3REQUIRES_VIOLATION (4 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr4REQUIRES_VIOLATION (3 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr5REQUIRES_VIOLATION (2 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr6REQUIRES_VIOLATION (1 of 15 remaining) [2021-11-20 05:41:06,090 INFO L764 garLoopResultBuilder]: Registering result UNKNOWN for location __ldv_list_addErr7REQUIRES_VIOLATION (0 of 15 remaining) [2021-11-20 05:41:06,116 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2021-11-20 05:41:06,291 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/mathsat -unsat_core_generation=3 [2021-11-20 05:41:06,294 INFO L732 BasicCegarLoop]: Path program histogram: [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 05:41:06,297 INFO L179 ceAbstractionStarter]: Computing trace abstraction results [2021-11-20 05:41:06,333 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction CFG 20.11 05:41:06 BoogieIcfgContainer [2021-11-20 05:41:06,333 INFO L132 PluginConnector]: ------------------------ END TraceAbstraction---------------------------- [2021-11-20 05:41:06,334 INFO L113 PluginConnector]: ------------------------Witness Printer---------------------------- [2021-11-20 05:41:06,334 INFO L271 PluginConnector]: Initializing Witness Printer... [2021-11-20 05:41:06,334 INFO L275 PluginConnector]: Witness Printer initialized [2021-11-20 05:41:06,335 INFO L185 PluginConnector]: Executing the observer RCFGCatcher from plugin Witness Printer for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 05:40:02" (3/4) ... [2021-11-20 05:41:06,337 INFO L140 WitnessPrinter]: No result that supports witness generation found [2021-11-20 05:41:06,338 INFO L132 PluginConnector]: ------------------------ END Witness Printer---------------------------- [2021-11-20 05:41:06,338 INFO L158 Benchmark]: Toolchain (without parser) took 64770.82ms. Allocated memory was 75.5MB in the beginning and 115.3MB in the end (delta: 39.8MB). Free memory was 56.8MB in the beginning and 77.1MB in the end (delta: -20.3MB). Peak memory consumption was 20.0MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,338 INFO L158 Benchmark]: CDTParser took 0.27ms. Allocated memory is still 75.5MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:41:06,339 INFO L158 Benchmark]: CACSL2BoogieTranslator took 763.46ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 40.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,339 INFO L158 Benchmark]: Boogie Procedure Inliner took 60.36ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 38.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,339 INFO L158 Benchmark]: Boogie Preprocessor took 28.96ms. Allocated memory is still 75.5MB. Free memory was 38.5MB in the beginning and 37.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,343 INFO L158 Benchmark]: RCFGBuilder took 566.32ms. Allocated memory was 75.5MB in the beginning and 115.3MB in the end (delta: 39.8MB). Free memory was 36.9MB in the beginning and 86.3MB in the end (delta: -49.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,344 INFO L158 Benchmark]: TraceAbstraction took 63340.11ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 77.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. [2021-11-20 05:41:06,344 INFO L158 Benchmark]: Witness Printer took 3.65ms. Allocated memory is still 115.3MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. [2021-11-20 05:41:06,348 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.27ms. Allocated memory is still 75.5MB. Free memory is still 56.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 763.46ms. Allocated memory is still 75.5MB. Free memory was 56.5MB in the beginning and 40.8MB in the end (delta: 15.7MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. * Boogie Procedure Inliner took 60.36ms. Allocated memory is still 75.5MB. Free memory was 40.8MB in the beginning and 38.5MB in the end (delta: 2.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * Boogie Preprocessor took 28.96ms. Allocated memory is still 75.5MB. Free memory was 38.5MB in the beginning and 37.2MB in the end (delta: 1.3MB). Peak memory consumption was 2.1MB. Max. memory is 16.1GB. * RCFGBuilder took 566.32ms. Allocated memory was 75.5MB in the beginning and 115.3MB in the end (delta: 39.8MB). Free memory was 36.9MB in the beginning and 86.3MB in the end (delta: -49.4MB). Peak memory consumption was 8.0MB. Max. memory is 16.1GB. * TraceAbstraction took 63340.11ms. Allocated memory is still 115.3MB. Free memory was 85.8MB in the beginning and 77.1MB in the end (delta: 8.8MB). Peak memory consumption was 8.8MB. Max. memory is 16.1GB. * Witness Printer took 3.65ms. Allocated memory is still 115.3MB. Free memory is still 77.1MB. There was no memory consumed. Max. memory is 16.1GB. * Results from de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction: - StatisticsResult: ErrorAutomatonStatistics NumberErrorTraces: 0, NumberStatementsAllTraces: 0, NumberRelevantStatements: 0, 0.0s ErrorAutomatonConstructionTimeTotal, 0.0s FaulLocalizationTime, NumberStatementsFirstTrace: -1, TraceLengthAvg: 0, 0.0s ErrorAutomatonConstructionTimeAvg, 0.0s ErrorAutomatonDifferenceTimeAvg, 0.0s ErrorAutomatonDifferenceTimeTotal, NumberOfNoEnhancement: 0, NumberOfFiniteEnhancement: 0, NumberOfInfiniteEnhancement: 0 - UnprovableResult [Line: 772]: Unable to prove that all allocated memory was freed Unable to prove that all allocated memory was freed Reason: overapproximation of memtrack at line 772. Possible FailurePath: [L569] struct ldv_list_head ldv_global_msg_list = { &(ldv_global_msg_list), &(ldv_global_msg_list) }; [L757] struct ldv_list_head global_list_13 = { &(global_list_13), &(global_list_13) }; VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L773] CALL entry_point() [L769] CALL alloc_13() [L763] CALL, EXPR ldv_malloc(sizeof(struct A13)) VAL [\old(size)=12, global_list_13={2:0}, ldv_global_msg_list={1:0}] [L526] COND TRUE __VERIFIER_nondet_int() [L527] return malloc(size); [L763] RET, EXPR ldv_malloc(sizeof(struct A13)) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, ldv_malloc(sizeof(struct A13))={6:0}] [L763] struct A13 *p = (struct A13 *)ldv_malloc(sizeof(struct A13)); [L764] COND TRUE \read(*p) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L765] CALL ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={2:0}, head={2:0}, ldv_global_msg_list={1:0}, new={6:4}] [L559] EXPR head->next VAL [global_list_13={2:0}, head={2:0}, head={2:0}, head->next={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}] [L559] CALL __ldv_list_add(new, head, head->next) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, next={2:0}, prev={2:0}] [L547] next->prev = new VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L548] new->next = next VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L549] new->prev = prev VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L550] prev->next = new VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}, next={2:0}, next={2:0}, prev={2:0}, prev={2:0}] [L559] RET __ldv_list_add(new, head, head->next) VAL [global_list_13={2:0}, head={2:0}, head={2:0}, head->next={2:0}, ldv_global_msg_list={1:0}, new={6:4}, new={6:4}] [L765] RET ldv_list_add(&p->list, &global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, p={6:0}] [L769] RET alloc_13() [L770] CALL LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}] [L540] list->next = list VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}, list={2:0}] [L541] list->prev = list VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}, list={2:0}, list={2:0}] [L770] RET LDV_INIT_LIST_HEAD(&global_list_13) VAL [global_list_13={2:0}, ldv_global_msg_list={1:0}] [L773] RET entry_point() - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 559]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 540]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 541]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 547]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 548]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 549]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - UnprovableResult [Line: 550]: Unable to prove that pointer dereference always succeeds Unable to prove that pointer dereference always succeeds Reason: Not analyzed. - StatisticsResult: Ultimate Automizer benchmark data CFG has 5 procedures, 49 locations, 15 error locations. Started 1 CEGAR loops. OverallTime: 63.2s, OverallIterations: 16, TraceHistogramMax: 1, PathProgramHistogramMax: 1, EmptinessCheckTime: 0.0s, AutomataDifference: 11.5s, DeadEndRemovalTime: 0.0s, HoareAnnotationTime: 0.0s, InitialAbstractionConstructionTime: 0.0s, PartialOrderReductionTime: 0.0s, HoareTripleCheckerStatistics: 0 mSolverCounterUnknown, 727 SdHoareTripleChecker+Valid, 5.1s IncrementalHoareTripleChecker+Time, 0 mSdLazyCounter, 707 mSDsluCounter, 2126 SdHoareTripleChecker+Invalid, 4.4s Time, 0 mProtectedAction, 0 SdHoareTripleChecker+Unchecked, 164 IncrementalHoareTripleChecker+Unchecked, 1658 mSDsCounter, 153 IncrementalHoareTripleChecker+Valid, 0 mProtectedPredicate, 1784 IncrementalHoareTripleChecker+Invalid, 2101 SdHoareTripleChecker+Unknown, 0 mSolverCounterNotChecked, 153 mSolverCounterUnsat, 468 mSDtfsCounter, 1784 mSolverCounterSat, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Unknown, PredicateUnifierStatistics: 0 DeclaredPredicates, 516 GetRequests, 310 SyntacticMatches, 15 SemanticMatches, 191 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 400 ImplicationChecksByTransitivity, 45.9s Time, 0.0s BasicInterpolantAutomatonTime, BiggestAbstraction: size=57occurred in iteration=2, InterpolantAutomatonStates: 124, traceCheckStatistics: No data available, InterpolantConsolidationStatistics: No data available, PathInvariantsStatistics: No data available, 0/0 InterpolantCoveringCapability, TotalInterpolationStatistics: No data available, 0.0s DumpTime, AutomataMinimizationStatistics: 0.1s AutomataMinimizationTime, 15 MinimizatonAttempts, 29 StatesRemovedByMinimization, 9 NontrivialMinimizations, HoareAnnotationStatistics: No data available, RefinementEngineStatistics: TRACE_CHECK: 0.2s SsaConstructionTime, 0.6s SatisfiabilityAnalysisTime, 46.8s InterpolantComputationTime, 278 NumberOfCodeBlocks, 278 NumberOfCodeBlocksAsserted, 16 NumberOfCheckSat, 462 ConstructedInterpolants, 18 QuantifiedInterpolants, 4983 SizeOfPredicates, 80 NumberOfNonLiveVariables, 1206 ConjunctsInSsa, 166 ConjunctsInUnsatCore, 30 InterpolantComputations, 30 PerfectInterpolantSequences, 0/0 InterpolantCoveringCapability, INVARIANT_SYNTHESIS: No data available, INTERPOLANT_CONSOLIDATION: No data available, ABSTRACT_INTERPRETATION: No data available, PDR: No data available, ACCELERATED_INTERPOLATION: No data available, SIFA: No data available, ReuseStatistics: No data available RESULT: Ultimate could not prove your program: unable to determine feasibility of some traces [2021-11-20 05:41:06,384 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_0cfb66ae-bb5a-40a3-9360-400511e4d831/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Forceful destruction successful, exit code 0 Received shutdown request... --- End real Ultimate output --- Execution finished normally Writing output log to file Ultimate.log Result: UNKNOWN: Overapproximated counterexample