./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version dbf71c69 Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ --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 bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:36:05,776 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:36:05,784 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:36:05,841 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:36:05,842 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:36:05,843 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:36:05,845 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:36:05,848 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:36:05,851 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:36:05,852 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:36:05,854 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:36:05,855 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:36:05,856 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:36:05,858 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:36:05,860 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:36:05,861 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:36:05,863 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:36:05,864 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:36:05,867 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:36:05,873 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:36:05,876 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:36:05,889 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:36:05,891 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:36:05,892 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:36:05,899 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:36:05,904 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:36:05,905 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:36:05,907 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:36:05,909 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:36:05,910 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:36:05,911 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:36:05,912 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:36:05,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:36:05,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:36:05,918 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:36:05,919 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:36:05,920 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:36:05,920 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:36:05,920 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:36:05,922 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:36:05,922 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:36:05,923 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:36:05,976 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:36:05,976 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:36:05,977 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:36:05,977 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:36:05,978 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:36:05,978 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:36:05,979 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:36:05,979 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:36:05,979 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:36:05,980 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:36:05,980 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:36:05,980 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:36:05,980 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:36:05,981 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:36:05,981 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:36:05,981 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:36:05,982 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:36:05,982 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:36:05,982 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:36:05,982 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:36:05,983 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:36:05,983 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:36:05,983 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:36:05,983 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:36:05,984 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:36:05,984 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:05,984 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:36:05,985 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:36:05,985 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:36:05,985 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:36:05,985 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_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 [2022-10-17 10:36:06,270 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:36:06,307 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:36:06,312 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:36:06,314 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:36:06,315 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:36:06,316 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2022-10-17 10:36:06,409 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/e3bd7256e/57f8992e7088441c86608838448e6693/FLAG1102d0229 [2022-10-17 10:36:07,137 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:36:07,137 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2022-10-17 10:36:07,169 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/e3bd7256e/57f8992e7088441c86608838448e6693/FLAG1102d0229 [2022-10-17 10:36:07,379 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/e3bd7256e/57f8992e7088441c86608838448e6693 [2022-10-17 10:36:07,382 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:36:07,383 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:36:07,385 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:07,386 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:36:07,389 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:36:07,390 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:07" (1/1) ... [2022-10-17 10:36:07,392 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1f6c67e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:07, skipping insertion in model container [2022-10-17 10:36:07,392 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:07" (1/1) ... [2022-10-17 10:36:07,400 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:36:07,450 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:07,943 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:07,962 ERROR L326 MainTranslator]: Unsupported Syntax: Found a cast between two array/pointer types of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) [2022-10-17 10:36:07,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@9ed62cf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:07, skipping insertion in model container [2022-10-17 10:36:07,963 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:07,963 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:36:07,966 INFO L158 Benchmark]: Toolchain (without parser) took 580.88ms. Allocated memory is still 98.6MB. Free memory was 63.2MB in the beginning and 67.6MB in the end (delta: -4.4MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:36:07,967 INFO L158 Benchmark]: CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:36:07,968 INFO L158 Benchmark]: CACSL2BoogieTranslator took 577.88ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 67.6MB in the end (delta: -4.6MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:36:07,970 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.32ms. Allocated memory is still 98.6MB. Free memory was 53.4MB in the beginning and 53.3MB in the end (delta: 43.6kB). There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 577.88ms. Allocated memory is still 98.6MB. Free memory was 63.0MB in the beginning and 67.6MB in the end (delta: -4.6MB). 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 of different sizes while using memory model HoenickeLindenmann_Original (while Not using bitvector translation) RESULT: Ultimate could not prove your program: Toolchain returned no result. Received shutdown request... --- End real Ultimate output --- Execution finished normally Using bit-precise analysis Retrying with bit-precise analysis ### Bit-precise run ### Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ --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 bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 --- Real Ultimate output --- [0.001s][warning][os,container] Duplicate cpuset controllers detected. Picking /sys/fs/cgroup/cpuset, skipping /sys/fs/cgroup/cpuset. This is Ultimate 0.2.2-dev-dbf71c6-m [2022-10-17 10:36:10,502 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:36:10,506 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:36:10,568 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:36:10,569 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:36:10,574 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:36:10,577 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:36:10,585 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:36:10,594 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:36:10,600 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:36:10,601 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:36:10,604 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:36:10,605 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:36:10,608 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:36:10,610 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:36:10,612 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:36:10,614 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:36:10,616 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:36:10,619 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:36:10,627 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:36:10,629 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:36:10,631 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:36:10,634 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:36:10,637 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:36:10,649 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:36:10,650 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:36:10,650 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:36:10,653 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:36:10,653 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:36:10,655 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:36:10,655 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:36:10,657 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:36:10,659 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:36:10,660 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:36:10,661 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:36:10,662 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:36:10,663 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:36:10,663 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:36:10,664 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:36:10,666 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:36:10,667 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:36:10,668 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:36:10,719 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:36:10,719 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:36:10,720 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:36:10,720 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:36:10,721 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:36:10,721 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:36:10,723 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:36:10,723 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:36:10,724 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:36:10,724 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:36:10,725 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:36:10,726 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:36:10,726 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:36:10,726 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:36:10,727 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:36:10,727 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:36:10,727 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:36:10,727 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:36:10,728 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:36:10,728 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:36:10,728 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:36:10,728 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:36:10,729 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:36:10,729 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:36:10,729 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:36:10,730 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:36:10,730 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:36:10,730 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:10,731 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:36:10,731 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:36:10,731 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:36:10,732 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:36:10,732 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:36:10,732 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_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> bb0a504b43b0de742fcc89ebbe9d313056bb1824edece6c56238a649b6f48626 [2022-10-17 10:36:11,189 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:36:11,216 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:36:11,220 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:36:11,221 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:36:11,226 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:36:11,228 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2022-10-17 10:36:11,305 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/6095e2137/4582dc065df64408ac7bf61f5d1e83af/FLAG84d83a97f [2022-10-17 10:36:11,939 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:36:11,940 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/sv-benchmarks/c/ldv-memsafety/memleaks_test17_2-2.i [2022-10-17 10:36:11,961 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/6095e2137/4582dc065df64408ac7bf61f5d1e83af/FLAG84d83a97f [2022-10-17 10:36:12,218 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/data/6095e2137/4582dc065df64408ac7bf61f5d1e83af [2022-10-17 10:36:12,220 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:36:12,223 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:36:12,225 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:12,225 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:36:12,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:36:12,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:12" (1/1) ... [2022-10-17 10:36:12,246 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1ade518b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:12, skipping insertion in model container [2022-10-17 10:36:12,247 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:36:12" (1/1) ... [2022-10-17 10:36:12,255 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:36:12,337 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:13,054 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:13,084 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:36:13,106 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:36:13,162 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:13,176 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:36:13,271 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:36:13,350 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:36:13,351 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13 WrapperNode [2022-10-17 10:36:13,352 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:36:13,353 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:13,354 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:36:13,354 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:36:13,362 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,408 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,462 INFO L138 Inliner]: procedures = 167, calls = 80, calls flagged for inlining = 24, calls inlined = 6, statements flattened = 99 [2022-10-17 10:36:13,462 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:36:13,463 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:36:13,463 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:36:13,464 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:36:13,474 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,474 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,491 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,492 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,501 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,506 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,509 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,511 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,516 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:36:13,517 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:36:13,517 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:36:13,517 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:36:13,518 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (1/1) ... [2022-10-17 10:36:13,525 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:36:13,542 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:36:13,568 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:36:13,584 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:36:13,626 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:36:13,627 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:36:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:36:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:36:13,627 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:36:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:36:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:36:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:36:13,628 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:36:13,629 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:36:13,872 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:36:13,874 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:36:14,324 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:36:14,332 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:36:14,332 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-10-17 10:36:14,335 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:14 BoogieIcfgContainer [2022-10-17 10:36:14,335 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:36:14,338 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:36:14,338 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:36:14,341 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:36:14,342 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:36:12" (1/3) ... [2022-10-17 10:36:14,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4533fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:14, skipping insertion in model container [2022-10-17 10:36:14,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:36:13" (2/3) ... [2022-10-17 10:36:14,343 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@4533fa8b and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:36:14, skipping insertion in model container [2022-10-17 10:36:14,343 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:36:14" (3/3) ... [2022-10-17 10:36:14,345 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_2-2.i [2022-10-17 10:36:14,367 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:36:14,367 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 20 error locations. [2022-10-17 10:36:14,423 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:36:14,441 INFO L357 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=false, mAutomataTypeConcurrency=FINITE_AUTOMATA, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=All, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mPorIndependenceSettings=[Lde.uni_freiburg.informatik.ultimate.lib.tracecheckerutils.partialorder.independence.IndependenceSettings;@e1efd6a, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:36:14,441 INFO L358 AbstractCegarLoop]: Starting to check reachability of 20 error locations. [2022-10-17 10:36:14,446 INFO L276 IsEmpty]: Start isEmpty. Operand has 67 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 63 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:36:14,455 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:14,455 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:14,456 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:14,456 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:14,463 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:14,463 INFO L85 PathProgramCache]: Analyzing trace with hash 858994893, now seen corresponding path program 1 times [2022-10-17 10:36:14,478 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:14,478 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [282447604] [2022-10-17 10:36:14,479 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:14,479 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:14,480 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:14,484 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:14,526 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:36:14,632 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:14,635 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 1 conjunts are in the unsatisfiable core [2022-10-17 10:36:14,646 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:14,677 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:14,677 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:14,678 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:14,679 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [282447604] [2022-10-17 10:36:14,680 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [282447604] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:14,680 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:14,681 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [] total 2 [2022-10-17 10:36:14,683 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [828392831] [2022-10-17 10:36:14,686 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:14,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 2 states [2022-10-17 10:36:14,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:14,731 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 2 interpolants. [2022-10-17 10:36:14,732 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:36:14,734 INFO L87 Difference]: Start difference. First operand has 67 states, 43 states have (on average 1.7674418604651163) internal successors, (76), 63 states have internal predecessors, (76), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:14,756 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:14,756 INFO L93 Difference]: Finished difference Result 67 states and 75 transitions. [2022-10-17 10:36:14,757 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 2 states. [2022-10-17 10:36:14,759 INFO L78 Accepts]: Start accepts. Automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:14,759 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:14,767 INFO L225 Difference]: With dead ends: 67 [2022-10-17 10:36:14,767 INFO L226 Difference]: Without dead ends: 65 [2022-10-17 10:36:14,769 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 0 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=1, Invalid=1, Unknown=0, NotChecked=0, Total=2 [2022-10-17 10:36:14,774 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 0 mSDsluCounter, 0 mSDsCounter, 0 mSdLazyCounter, 0 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 75 SdHoareTripleChecker+Invalid, 0 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 0 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:14,776 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 75 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 0 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:36:14,797 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 65 states. [2022-10-17 10:36:14,819 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 65 to 65. [2022-10-17 10:36:14,820 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 65 states, 42 states have (on average 1.6428571428571428) internal successors, (69), 61 states have internal predecessors, (69), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:36:14,823 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 65 states to 65 states and 73 transitions. [2022-10-17 10:36:14,824 INFO L78 Accepts]: Start accepts. Automaton has 65 states and 73 transitions. Word has length 14 [2022-10-17 10:36:14,825 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:14,825 INFO L495 AbstractCegarLoop]: Abstraction has 65 states and 73 transitions. [2022-10-17 10:36:14,825 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 2 states, 2 states have (on average 6.0) internal successors, (12), 2 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:14,826 INFO L276 IsEmpty]: Start isEmpty. Operand 65 states and 73 transitions. [2022-10-17 10:36:14,827 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:14,827 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:14,828 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:14,846 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:15,041 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:15,042 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:15,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:15,043 INFO L85 PathProgramCache]: Analyzing trace with hash 465967883, now seen corresponding path program 1 times [2022-10-17 10:36:15,043 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:15,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1173377775] [2022-10-17 10:36:15,044 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:15,044 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:15,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:15,046 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:15,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:36:15,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:15,130 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:36:15,133 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:15,216 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:15,217 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:15,218 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:15,219 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1173377775] [2022-10-17 10:36:15,220 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1173377775] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:15,220 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:15,220 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:36:15,220 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1225961976] [2022-10-17 10:36:15,221 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:15,222 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:36:15,223 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:15,224 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:36:15,224 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:15,225 INFO L87 Difference]: Start difference. First operand 65 states and 73 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:15,410 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:15,411 INFO L93 Difference]: Finished difference Result 121 states and 137 transitions. [2022-10-17 10:36:15,411 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:36:15,412 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:15,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:15,416 INFO L225 Difference]: With dead ends: 121 [2022-10-17 10:36:15,418 INFO L226 Difference]: Without dead ends: 121 [2022-10-17 10:36:15,419 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:15,424 INFO L413 NwaCegarLoop]: 65 mSDtfsCounter, 57 mSDsluCounter, 184 mSDsCounter, 0 mSdLazyCounter, 50 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 59 SdHoareTripleChecker+Valid, 249 SdHoareTripleChecker+Invalid, 51 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 50 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:15,428 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [59 Valid, 249 Invalid, 51 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 50 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:36:15,429 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 121 states. [2022-10-17 10:36:15,441 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 121 to 69. [2022-10-17 10:36:15,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 69 states, 45 states have (on average 1.6) internal successors, (72), 64 states have internal predecessors, (72), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:36:15,450 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 69 states to 69 states and 78 transitions. [2022-10-17 10:36:15,451 INFO L78 Accepts]: Start accepts. Automaton has 69 states and 78 transitions. Word has length 14 [2022-10-17 10:36:15,451 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:15,451 INFO L495 AbstractCegarLoop]: Abstraction has 69 states and 78 transitions. [2022-10-17 10:36:15,452 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:15,452 INFO L276 IsEmpty]: Start isEmpty. Operand 69 states and 78 transitions. [2022-10-17 10:36:15,453 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:15,453 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:15,453 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:15,477 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:15,668 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:15,668 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:15,669 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:15,669 INFO L85 PathProgramCache]: Analyzing trace with hash 465866789, now seen corresponding path program 1 times [2022-10-17 10:36:15,669 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:15,670 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1786644731] [2022-10-17 10:36:15,670 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:15,670 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:15,670 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:15,671 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:15,686 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:36:15,752 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:15,755 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 5 conjunts are in the unsatisfiable core [2022-10-17 10:36:15,759 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:15,803 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:36:15,857 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:15,858 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:15,858 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:15,858 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1786644731] [2022-10-17 10:36:15,858 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1786644731] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:15,859 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:15,859 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:36:15,859 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1177253905] [2022-10-17 10:36:15,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:15,860 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:36:15,860 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:15,861 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:36:15,861 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:15,861 INFO L87 Difference]: Start difference. First operand 69 states and 78 transitions. Second operand has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:16,105 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:16,105 INFO L93 Difference]: Finished difference Result 93 states and 107 transitions. [2022-10-17 10:36:16,105 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:36:16,106 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:16,106 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:16,107 INFO L225 Difference]: With dead ends: 93 [2022-10-17 10:36:16,107 INFO L226 Difference]: Without dead ends: 93 [2022-10-17 10:36:16,108 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:16,109 INFO L413 NwaCegarLoop]: 61 mSDtfsCounter, 24 mSDsluCounter, 127 mSDsCounter, 0 mSdLazyCounter, 105 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 24 SdHoareTripleChecker+Valid, 188 SdHoareTripleChecker+Invalid, 107 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 105 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:16,109 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [24 Valid, 188 Invalid, 107 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 105 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:36:16,111 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 93 states. [2022-10-17 10:36:16,118 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 93 to 80. [2022-10-17 10:36:16,118 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 56 states have (on average 1.5892857142857142) internal successors, (89), 75 states have internal predecessors, (89), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:36:16,120 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 95 transitions. [2022-10-17 10:36:16,120 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 95 transitions. Word has length 14 [2022-10-17 10:36:16,120 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:16,121 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 95 transitions. [2022-10-17 10:36:16,121 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 3.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:16,121 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 95 transitions. [2022-10-17 10:36:16,122 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:16,122 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:16,122 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:16,140 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:16,333 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:16,333 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:16,334 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:16,334 INFO L85 PathProgramCache]: Analyzing trace with hash 465866790, now seen corresponding path program 1 times [2022-10-17 10:36:16,334 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:16,334 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1919183226] [2022-10-17 10:36:16,334 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:16,335 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:16,335 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:16,338 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:16,340 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:36:16,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:16,396 INFO L263 TraceCheckSpWp]: Trace formula consists of 44 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:36:16,399 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:16,462 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:36:16,767 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:16,768 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:16,768 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:16,768 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1919183226] [2022-10-17 10:36:16,768 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1919183226] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:16,769 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:16,769 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:36:16,769 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [593115663] [2022-10-17 10:36:16,769 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:16,770 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 11 states [2022-10-17 10:36:16,770 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:16,770 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 11 interpolants. [2022-10-17 10:36:16,771 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=28, Invalid=82, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:36:16,771 INFO L87 Difference]: Start difference. First operand 80 states and 95 transitions. Second operand has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:17,508 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:17,508 INFO L93 Difference]: Finished difference Result 117 states and 138 transitions. [2022-10-17 10:36:17,509 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:36:17,509 INFO L78 Accepts]: Start accepts. Automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:17,509 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:17,511 INFO L225 Difference]: With dead ends: 117 [2022-10-17 10:36:17,511 INFO L226 Difference]: Without dead ends: 117 [2022-10-17 10:36:17,511 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 22 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=69, Invalid=203, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:36:17,513 INFO L413 NwaCegarLoop]: 77 mSDtfsCounter, 221 mSDsluCounter, 352 mSDsCounter, 0 mSdLazyCounter, 207 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 221 SdHoareTripleChecker+Valid, 429 SdHoareTripleChecker+Invalid, 273 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 207 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 39 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:17,513 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [221 Valid, 429 Invalid, 273 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 207 Invalid, 0 Unknown, 39 Unchecked, 0.6s Time] [2022-10-17 10:36:17,518 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-10-17 10:36:17,529 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 100. [2022-10-17 10:36:17,530 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.5657894736842106) internal successors, (119), 95 states have internal predecessors, (119), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:36:17,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 125 transitions. [2022-10-17 10:36:17,532 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 125 transitions. Word has length 14 [2022-10-17 10:36:17,533 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:17,533 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 125 transitions. [2022-10-17 10:36:17,533 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 11 states, 9 states have (on average 1.3333333333333333) internal successors, (12), 10 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:17,533 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 125 transitions. [2022-10-17 10:36:17,534 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:17,534 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:17,535 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:17,555 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:17,748 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:17,749 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr19ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:17,749 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:17,750 INFO L85 PathProgramCache]: Analyzing trace with hash 1353471564, now seen corresponding path program 1 times [2022-10-17 10:36:17,750 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:17,750 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [881819471] [2022-10-17 10:36:17,751 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:17,751 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:17,751 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:17,753 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:17,759 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:36:17,809 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:17,811 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:36:17,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:17,877 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:17,878 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:17,878 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:17,878 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [881819471] [2022-10-17 10:36:17,879 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [881819471] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:17,879 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:17,879 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:36:17,879 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [374207246] [2022-10-17 10:36:17,880 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:17,880 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:36:17,880 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:17,881 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:36:17,881 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:36:17,881 INFO L87 Difference]: Start difference. First operand 100 states and 125 transitions. Second operand has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:18,076 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:18,077 INFO L93 Difference]: Finished difference Result 144 states and 174 transitions. [2022-10-17 10:36:18,077 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:36:18,078 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:18,078 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:18,080 INFO L225 Difference]: With dead ends: 144 [2022-10-17 10:36:18,080 INFO L226 Difference]: Without dead ends: 142 [2022-10-17 10:36:18,080 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:36:18,082 INFO L413 NwaCegarLoop]: 86 mSDtfsCounter, 48 mSDsluCounter, 114 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 48 SdHoareTripleChecker+Valid, 200 SdHoareTripleChecker+Invalid, 74 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 71 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:18,082 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [48 Valid, 200 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:36:18,083 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-17 10:36:18,093 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 100. [2022-10-17 10:36:18,093 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 76 states have (on average 1.5526315789473684) internal successors, (118), 95 states have internal predecessors, (118), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-10-17 10:36:18,097 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 124 transitions. [2022-10-17 10:36:18,102 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 124 transitions. Word has length 14 [2022-10-17 10:36:18,102 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:18,103 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 124 transitions. [2022-10-17 10:36:18,103 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 4.0) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:18,103 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 124 transitions. [2022-10-17 10:36:18,104 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-10-17 10:36:18,105 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:18,105 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:18,120 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:18,316 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:18,317 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:18,317 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:18,318 INFO L85 PathProgramCache]: Analyzing trace with hash 1353370470, now seen corresponding path program 1 times [2022-10-17 10:36:18,318 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:18,318 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1198035028] [2022-10-17 10:36:18,318 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:18,319 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:18,319 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:18,321 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:18,323 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:36:18,373 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:18,375 INFO L263 TraceCheckSpWp]: Trace formula consists of 38 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:36:18,377 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:18,434 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:18,434 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:18,435 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:18,435 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1198035028] [2022-10-17 10:36:18,435 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1198035028] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:18,435 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:18,435 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:36:18,436 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [951006275] [2022-10-17 10:36:18,436 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:18,436 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:36:18,437 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:18,437 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:36:18,437 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:18,438 INFO L87 Difference]: Start difference. First operand 100 states and 124 transitions. Second operand has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:18,494 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:18,495 INFO L93 Difference]: Finished difference Result 86 states and 102 transitions. [2022-10-17 10:36:18,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:36:18,496 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 14 [2022-10-17 10:36:18,496 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:18,497 INFO L225 Difference]: With dead ends: 86 [2022-10-17 10:36:18,497 INFO L226 Difference]: Without dead ends: 84 [2022-10-17 10:36:18,497 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 13 GetRequests, 10 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:36:18,498 INFO L413 NwaCegarLoop]: 74 mSDtfsCounter, 0 mSDsluCounter, 201 mSDsCounter, 0 mSdLazyCounter, 21 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 275 SdHoareTripleChecker+Invalid, 21 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 21 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:18,499 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 275 Invalid, 21 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 21 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:36:18,500 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 84 states. [2022-10-17 10:36:18,505 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 84 to 84. [2022-10-17 10:36:18,506 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 84 states, 61 states have (on average 1.5573770491803278) internal successors, (95), 80 states have internal predecessors, (95), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:36:18,507 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 84 states to 84 states and 100 transitions. [2022-10-17 10:36:18,507 INFO L78 Accepts]: Start accepts. Automaton has 84 states and 100 transitions. Word has length 14 [2022-10-17 10:36:18,508 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:18,508 INFO L495 AbstractCegarLoop]: Abstraction has 84 states and 100 transitions. [2022-10-17 10:36:18,508 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.4) internal successors, (12), 4 states have internal predecessors, (12), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:18,508 INFO L276 IsEmpty]: Start isEmpty. Operand 84 states and 100 transitions. [2022-10-17 10:36:18,509 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:36:18,509 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:18,509 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:18,526 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:18,722 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:18,723 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:18,723 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:18,723 INFO L85 PathProgramCache]: Analyzing trace with hash 1598186502, now seen corresponding path program 1 times [2022-10-17 10:36:18,724 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:18,724 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1991972166] [2022-10-17 10:36:18,724 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:18,724 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:18,724 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:18,725 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:18,727 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:36:18,794 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:18,797 INFO L263 TraceCheckSpWp]: Trace formula consists of 59 conjuncts, 18 conjunts are in the unsatisfiable core [2022-10-17 10:36:18,801 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:18,872 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:36:19,269 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:19,269 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:36:21,365 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:21,365 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:21,366 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1991972166] [2022-10-17 10:36:21,366 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1991972166] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:36:21,366 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:36:21,366 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [11, 10] total 20 [2022-10-17 10:36:21,367 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [699442924] [2022-10-17 10:36:21,367 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:36:21,367 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 21 states [2022-10-17 10:36:21,368 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:21,368 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 21 interpolants. [2022-10-17 10:36:21,369 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=73, Invalid=347, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:36:21,369 INFO L87 Difference]: Start difference. First operand 84 states and 100 transitions. Second operand has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:36:23,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:23,841 INFO L93 Difference]: Finished difference Result 180 states and 204 transitions. [2022-10-17 10:36:23,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 17 states. [2022-10-17 10:36:23,842 INFO L78 Accepts]: Start accepts. Automaton has has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 17 [2022-10-17 10:36:23,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:23,843 INFO L225 Difference]: With dead ends: 180 [2022-10-17 10:36:23,843 INFO L226 Difference]: Without dead ends: 180 [2022-10-17 10:36:23,844 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 42 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 136 ImplicationChecksByTransitivity, 2.7s TimeCoverageRelationStatistics Valid=186, Invalid=744, Unknown=0, NotChecked=0, Total=930 [2022-10-17 10:36:23,847 INFO L413 NwaCegarLoop]: 51 mSDtfsCounter, 390 mSDsluCounter, 615 mSDsCounter, 0 mSdLazyCounter, 314 mSolverCounterSat, 27 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 390 SdHoareTripleChecker+Valid, 666 SdHoareTripleChecker+Invalid, 473 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 27 IncrementalHoareTripleChecker+Valid, 314 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 132 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:23,847 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [390 Valid, 666 Invalid, 473 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [27 Valid, 314 Invalid, 0 Unknown, 132 Unchecked, 1.5s Time] [2022-10-17 10:36:23,848 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 180 states. [2022-10-17 10:36:23,853 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 180 to 90. [2022-10-17 10:36:23,854 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 90 states, 67 states have (on average 1.537313432835821) internal successors, (103), 86 states have internal predecessors, (103), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:36:23,855 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 90 states to 90 states and 108 transitions. [2022-10-17 10:36:23,855 INFO L78 Accepts]: Start accepts. Automaton has 90 states and 108 transitions. Word has length 17 [2022-10-17 10:36:23,855 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:23,855 INFO L495 AbstractCegarLoop]: Abstraction has 90 states and 108 transitions. [2022-10-17 10:36:23,856 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 21 states, 18 states have (on average 1.5555555555555556) internal successors, (28), 19 states have internal predecessors, (28), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:36:23,856 INFO L276 IsEmpty]: Start isEmpty. Operand 90 states and 108 transitions. [2022-10-17 10:36:23,857 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:36:23,857 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:23,857 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:23,871 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:24,071 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:24,071 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:24,072 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:24,072 INFO L85 PathProgramCache]: Analyzing trace with hash 740047555, now seen corresponding path program 1 times [2022-10-17 10:36:24,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:24,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [753449495] [2022-10-17 10:36:24,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:24,073 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:24,073 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:24,077 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:24,079 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:36:24,137 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:24,139 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:36:24,141 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:24,147 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 7 [2022-10-17 10:36:24,202 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 1 trivial. 0 not checked. [2022-10-17 10:36:24,202 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:36:24,202 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:24,202 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [753449495] [2022-10-17 10:36:24,202 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [753449495] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:36:24,203 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:36:24,203 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:36:24,203 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1369880757] [2022-10-17 10:36:24,203 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:24,203 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:36:24,204 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:24,204 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:36:24,204 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:36:24,204 INFO L87 Difference]: Start difference. First operand 90 states and 108 transitions. Second operand has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:24,377 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:24,377 INFO L93 Difference]: Finished difference Result 100 states and 119 transitions. [2022-10-17 10:36:24,378 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:36:24,378 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-10-17 10:36:24,378 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:24,379 INFO L225 Difference]: With dead ends: 100 [2022-10-17 10:36:24,379 INFO L226 Difference]: Without dead ends: 100 [2022-10-17 10:36:24,379 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 17 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:36:24,380 INFO L413 NwaCegarLoop]: 59 mSDtfsCounter, 33 mSDsluCounter, 159 mSDsCounter, 0 mSdLazyCounter, 126 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 33 SdHoareTripleChecker+Valid, 218 SdHoareTripleChecker+Invalid, 127 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 126 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:24,380 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [33 Valid, 218 Invalid, 127 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 126 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:36:24,381 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-17 10:36:24,387 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 91. [2022-10-17 10:36:24,388 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.5441176470588236) internal successors, (105), 87 states have internal predecessors, (105), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:36:24,389 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 110 transitions. [2022-10-17 10:36:24,389 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 110 transitions. Word has length 22 [2022-10-17 10:36:24,389 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:24,389 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 110 transitions. [2022-10-17 10:36:24,390 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 4.0) internal successors, (20), 5 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:24,390 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 110 transitions. [2022-10-17 10:36:24,391 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-10-17 10:36:24,391 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:24,391 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:24,402 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:24,601 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:24,601 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:24,602 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:24,602 INFO L85 PathProgramCache]: Analyzing trace with hash 740047556, now seen corresponding path program 1 times [2022-10-17 10:36:24,602 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:24,602 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1009225167] [2022-10-17 10:36:24,602 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:24,603 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:24,603 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:24,603 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:24,604 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:36:24,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:24,683 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-17 10:36:24,687 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:24,742 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:36:25,190 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:25,190 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:36:26,400 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 1 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:26,400 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:26,400 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1009225167] [2022-10-17 10:36:26,401 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1009225167] provided 1 perfect and 1 imperfect interpolant sequences [2022-10-17 10:36:26,401 INFO L184 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2022-10-17 10:36:26,401 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [10] total 16 [2022-10-17 10:36:26,401 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [789496406] [2022-10-17 10:36:26,401 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:36:26,402 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:36:26,402 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:26,402 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:36:26,403 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=44, Invalid=228, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:36:26,403 INFO L87 Difference]: Start difference. First operand 91 states and 110 transitions. Second operand has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:27,715 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:27,715 INFO L93 Difference]: Finished difference Result 108 states and 120 transitions. [2022-10-17 10:36:27,716 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:36:27,717 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 22 [2022-10-17 10:36:27,717 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:27,718 INFO L225 Difference]: With dead ends: 108 [2022-10-17 10:36:27,718 INFO L226 Difference]: Without dead ends: 108 [2022-10-17 10:36:27,719 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 44 GetRequests, 26 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 41 ImplicationChecksByTransitivity, 1.4s TimeCoverageRelationStatistics Valid=58, Invalid=284, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:36:27,719 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 138 mSDsluCounter, 203 mSDsCounter, 0 mSdLazyCounter, 111 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.8s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 256 SdHoareTripleChecker+Invalid, 155 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 111 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 38 IncrementalHoareTripleChecker+Unchecked, 0.9s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:27,720 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 256 Invalid, 155 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 111 Invalid, 0 Unknown, 38 Unchecked, 0.9s Time] [2022-10-17 10:36:27,723 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 108 states. [2022-10-17 10:36:27,727 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 108 to 91. [2022-10-17 10:36:27,727 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 68 states have (on average 1.5294117647058822) internal successors, (104), 87 states have internal predecessors, (104), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-10-17 10:36:27,729 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 109 transitions. [2022-10-17 10:36:27,729 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 109 transitions. Word has length 22 [2022-10-17 10:36:27,729 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:27,729 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 109 transitions. [2022-10-17 10:36:27,730 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.857142857142857) internal successors, (20), 7 states have internal predecessors, (20), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:27,730 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 109 transitions. [2022-10-17 10:36:27,731 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:36:27,733 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:27,733 INFO L195 NwaCegarLoop]: 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] [2022-10-17 10:36:27,749 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:27,945 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:27,945 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:27,946 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:27,946 INFO L85 PathProgramCache]: Analyzing trace with hash 1466637803, now seen corresponding path program 1 times [2022-10-17 10:36:27,946 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:27,946 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [589251715] [2022-10-17 10:36:27,946 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:36:27,946 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:27,946 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:27,947 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:27,950 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:36:28,040 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:36:28,045 INFO L263 TraceCheckSpWp]: Trace formula consists of 82 conjuncts, 11 conjunts are in the unsatisfiable core [2022-10-17 10:36:28,050 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:28,071 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 11 treesize of output 7 [2022-10-17 10:36:28,133 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-10-17 10:36:28,145 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:28,145 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:36:28,210 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 14 treesize of output 12 [2022-10-17 10:36:28,215 INFO L390 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 18 treesize of output 16 [2022-10-17 10:36:28,255 INFO L134 CoverageAnalysis]: Checked inductivity of 1 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:28,255 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:28,255 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [589251715] [2022-10-17 10:36:28,255 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [589251715] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:36:28,255 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:36:28,255 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 7 [2022-10-17 10:36:28,256 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1194471156] [2022-10-17 10:36:28,256 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:36:28,256 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:36:28,256 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:28,257 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:36:28,257 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=41, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:36:28,257 INFO L87 Difference]: Start difference. First operand 91 states and 109 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:28,675 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:36:28,675 INFO L93 Difference]: Finished difference Result 159 states and 183 transitions. [2022-10-17 10:36:28,676 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:36:28,677 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 23 [2022-10-17 10:36:28,677 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:36:28,678 INFO L225 Difference]: With dead ends: 159 [2022-10-17 10:36:28,679 INFO L226 Difference]: Without dead ends: 159 [2022-10-17 10:36:28,679 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 48 GetRequests, 38 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 6 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=37, Invalid=95, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:36:28,680 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 92 mSDsluCounter, 246 mSDsCounter, 0 mSdLazyCounter, 141 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 299 SdHoareTripleChecker+Invalid, 146 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 141 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:36:28,680 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 299 Invalid, 146 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 141 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:36:28,681 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 159 states. [2022-10-17 10:36:28,686 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 159 to 108. [2022-10-17 10:36:28,686 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 84 states have (on average 1.5714285714285714) internal successors, (132), 103 states have internal predecessors, (132), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-10-17 10:36:28,688 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 140 transitions. [2022-10-17 10:36:28,688 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 140 transitions. Word has length 23 [2022-10-17 10:36:28,688 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:36:28,689 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 140 transitions. [2022-10-17 10:36:28,689 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 8 states have internal predecessors, (27), 1 states have call successors, (1), 1 states have call predecessors, (1), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:36:28,689 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 140 transitions. [2022-10-17 10:36:28,690 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-10-17 10:36:28,690 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:36:28,691 INFO L195 NwaCegarLoop]: trace histogram [4, 3, 3, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:36:28,704 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:36:28,903 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:36:28,904 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 17 more)] === [2022-10-17 10:36:28,904 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:36:28,904 INFO L85 PathProgramCache]: Analyzing trace with hash 1828515846, now seen corresponding path program 2 times [2022-10-17 10:36:28,904 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:36:28,904 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [773821457] [2022-10-17 10:36:28,905 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:36:28,905 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:36:28,905 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:36:28,905 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:36:28,907 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_5cce1417-09a1-43f3-83ef-41262e9954c3/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:36:29,021 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-10-17 10:36:29,021 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:36:29,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 89 conjuncts, 21 conjunts are in the unsatisfiable core [2022-10-17 10:36:29,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:36:29,111 INFO L390 Elim1Store]: Elim1 did not use preprocessing eliminated variable of array dimension 1, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 6 treesize of output 5 [2022-10-17 10:36:30,011 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:30,011 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:36:33,946 INFO L134 CoverageAnalysis]: Checked inductivity of 15 backedges. 0 proven. 15 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:36:33,946 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:36:33,947 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [773821457] [2022-10-17 10:36:33,947 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [773821457] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:36:33,947 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:36:33,947 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [15, 13] total 27 [2022-10-17 10:36:33,947 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1931208230] [2022-10-17 10:36:33,948 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:36:33,948 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 28 states [2022-10-17 10:36:33,948 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:36:33,949 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 28 interpolants. [2022-10-17 10:36:33,949 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=142, Invalid=614, Unknown=0, NotChecked=0, Total=756 [2022-10-17 10:36:33,950 INFO L87 Difference]: Start difference. First operand 108 states and 140 transitions. Second operand has 28 states, 25 states have (on average 1.6) internal successors, (40), 26 states have internal predecessors, (40), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:36:39,586 WARN L539 Checker$ProtectedHtc]: IncrementalHoareTripleChecker took 2.00s for a HTC check with result UNKNOWN. Formula has sorts [Array, Bool, BitVec], hasArrays=true, hasNonlinArith=false, quantifiers []