./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- 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 10:15:27,667 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:27,669 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:27,719 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:27,720 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:27,726 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:27,729 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:27,733 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:27,736 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:27,742 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:27,743 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:27,745 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:27,746 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:27,749 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:27,751 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:27,753 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:27,755 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:27,756 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:27,758 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:27,767 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:27,769 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:27,770 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:27,774 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:27,776 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:27,786 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:27,787 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:27,787 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:27,789 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:27,790 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:27,791 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:27,793 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:27,795 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:27,797 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:27,799 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:27,800 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:27,800 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:27,801 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:27,801 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:27,801 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:27,802 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:27,803 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:27,804 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-10-17 10:15:27,855 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:27,855 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:27,855 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:27,856 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:27,857 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:27,857 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:27,858 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:27,858 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:27,858 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:27,858 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:27,859 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:27,860 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:15:27,860 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:27,860 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:27,860 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:27,860 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:15:27,861 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:15:27,861 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:15:27,861 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:27,861 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:15:27,861 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:27,862 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:27,862 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:27,862 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:27,862 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:27,863 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:27,863 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:27,863 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-10-17 10:15:27,863 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-10-17 10:15:27,864 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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-10-17 10:15:28,244 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:28,281 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:28,285 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:28,287 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:28,288 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:28,289 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-10-17 10:15:28,363 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0c3e47c5d/e5675406197943a8aa38ab6a39dee5da/FLAG32981acae [2022-10-17 10:15:28,990 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:28,991 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-10-17 10:15:29,010 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0c3e47c5d/e5675406197943a8aa38ab6a39dee5da/FLAG32981acae [2022-10-17 10:15:29,226 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0c3e47c5d/e5675406197943a8aa38ab6a39dee5da [2022-10-17 10:15:29,232 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:29,234 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:29,241 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:29,241 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:29,244 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:29,245 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:29" (1/1) ... [2022-10-17 10:15:29,247 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@491272b6 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:29, skipping insertion in model container [2022-10-17 10:15:29,249 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:29" (1/1) ... [2022-10-17 10:15:29,257 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:29,323 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:29,914 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:29,943 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 10:15:29,943 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@7bae31e7 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:29, skipping insertion in model container [2022-10-17 10:15:29,944 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:29,945 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-10-17 10:15:29,948 INFO L158 Benchmark]: Toolchain (without parser) took 711.73ms. Allocated memory is still 100.7MB. Free memory was 61.7MB in the beginning and 69.9MB in the end (delta: -8.2MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:15:29,949 INFO L158 Benchmark]: CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. [2022-10-17 10:15:29,951 INFO L158 Benchmark]: CACSL2BoogieTranslator took 704.10ms. Allocated memory is still 100.7MB. Free memory was 61.5MB in the beginning and 70.1MB in the end (delta: -8.7MB). Peak memory consumption was 8.4MB. Max. memory is 16.1GB. [2022-10-17 10:15:29,953 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.31ms. Allocated memory is still 100.7MB. Free memory is still 79.4MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 704.10ms. Allocated memory is still 100.7MB. Free memory was 61.5MB in the beginning and 70.1MB in the end (delta: -8.7MB). 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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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 cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 --- 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 10:15:32,409 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-10-17 10:15:32,412 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-10-17 10:15:32,449 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-10-17 10:15:32,450 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-10-17 10:15:32,451 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-10-17 10:15:32,453 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-10-17 10:15:32,456 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-10-17 10:15:32,459 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-10-17 10:15:32,460 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-10-17 10:15:32,461 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-10-17 10:15:32,463 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-10-17 10:15:32,464 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-10-17 10:15:32,465 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-10-17 10:15:32,466 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-10-17 10:15:32,468 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-10-17 10:15:32,469 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-10-17 10:15:32,470 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-10-17 10:15:32,473 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-10-17 10:15:32,476 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-10-17 10:15:32,481 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-10-17 10:15:32,489 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-10-17 10:15:32,491 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-10-17 10:15:32,492 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-10-17 10:15:32,503 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-10-17 10:15:32,505 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-10-17 10:15:32,509 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-10-17 10:15:32,511 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-10-17 10:15:32,511 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-10-17 10:15:32,513 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-10-17 10:15:32,514 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-10-17 10:15:32,515 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-10-17 10:15:32,517 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-10-17 10:15:32,518 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-10-17 10:15:32,519 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-10-17 10:15:32,520 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-10-17 10:15:32,521 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-10-17 10:15:32,522 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-10-17 10:15:32,522 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-10-17 10:15:32,523 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-10-17 10:15:32,525 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-10-17 10:15:32,526 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-10-17 10:15:32,592 INFO L113 SettingsManager]: Loading preferences was successful [2022-10-17 10:15:32,593 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-10-17 10:15:32,594 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-10-17 10:15:32,594 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-10-17 10:15:32,595 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-10-17 10:15:32,596 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-10-17 10:15:32,597 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-10-17 10:15:32,597 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-10-17 10:15:32,598 INFO L138 SettingsManager]: * Use SBE=true [2022-10-17 10:15:32,598 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-10-17 10:15:32,599 INFO L138 SettingsManager]: * sizeof long=4 [2022-10-17 10:15:32,599 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-10-17 10:15:32,600 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-10-17 10:15:32,600 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-10-17 10:15:32,600 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-10-17 10:15:32,601 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-10-17 10:15:32,601 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-10-17 10:15:32,601 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-10-17 10:15:32,601 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-10-17 10:15:32,601 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-10-17 10:15:32,602 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-10-17 10:15:32,602 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-10-17 10:15:32,602 INFO L138 SettingsManager]: * sizeof long double=12 [2022-10-17 10:15:32,602 INFO L138 SettingsManager]: * Use constant arrays=true [2022-10-17 10:15:32,603 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-10-17 10:15:32,603 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-10-17 10:15:32,603 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-10-17 10:15:32,603 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:32,604 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-10-17 10:15:32,604 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-10-17 10:15:32,604 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-10-17 10:15:32,604 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-10-17 10:15:32,605 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-10-17 10:15:32,605 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_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> cac2372de612a50e6cea0e2672ab51101a6ffa3bb2603a06b5c5aa59090db116 [2022-10-17 10:15:33,003 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-10-17 10:15:33,025 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-10-17 10:15:33,028 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-10-17 10:15:33,029 INFO L271 PluginConnector]: Initializing CDTParser... [2022-10-17 10:15:33,031 INFO L275 PluginConnector]: CDTParser initialized [2022-10-17 10:15:33,032 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/../../sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-10-17 10:15:33,106 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0da8f4fc2/f90a5f4f9cc9489b96467d57c3dd5322/FLAG523ad0170 [2022-10-17 10:15:33,742 INFO L306 CDTParser]: Found 1 translation units. [2022-10-17 10:15:33,743 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/sv-benchmarks/c/ldv-memsafety/memleaks_test22_3-1.i [2022-10-17 10:15:33,767 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0da8f4fc2/f90a5f4f9cc9489b96467d57c3dd5322/FLAG523ad0170 [2022-10-17 10:15:33,947 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/data/0da8f4fc2/f90a5f4f9cc9489b96467d57c3dd5322 [2022-10-17 10:15:33,950 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-10-17 10:15:33,954 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-10-17 10:15:33,957 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:33,957 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-10-17 10:15:33,961 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-10-17 10:15:33,962 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:33" (1/1) ... [2022-10-17 10:15:33,963 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@746fdc2c and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:33, skipping insertion in model container [2022-10-17 10:15:33,963 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 17.10 10:15:33" (1/1) ... [2022-10-17 10:15:33,970 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-10-17 10:15:34,022 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:34,505 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:34,524 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-10-17 10:15:34,534 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-10-17 10:15:34,574 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:34,587 INFO L203 MainTranslator]: Completed pre-run [2022-10-17 10:15:34,690 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-10-17 10:15:34,742 INFO L208 MainTranslator]: Completed translation [2022-10-17 10:15:34,743 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34 WrapperNode [2022-10-17 10:15:34,743 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-10-17 10:15:34,746 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:34,746 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-10-17 10:15:34,746 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-10-17 10:15:34,754 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,789 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,825 INFO L138 Inliner]: procedures = 167, calls = 73, calls flagged for inlining = 25, calls inlined = 19, statements flattened = 124 [2022-10-17 10:15:34,825 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-10-17 10:15:34,826 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-10-17 10:15:34,826 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-10-17 10:15:34,826 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-10-17 10:15:34,836 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,836 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,842 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,842 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,867 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,871 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,874 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,876 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,881 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-10-17 10:15:34,882 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-10-17 10:15:34,882 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-10-17 10:15:34,882 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-10-17 10:15:34,883 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (1/1) ... [2022-10-17 10:15:34,889 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-10-17 10:15:34,913 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/z3 [2022-10-17 10:15:34,929 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-10-17 10:15:34,943 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-10-17 10:15:34,977 INFO L130 BoogieDeclarations]: Found specification of procedure read~intINTTYPE4 [2022-10-17 10:15:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure LDV_INIT_LIST_HEAD [2022-10-17 10:15:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure LDV_INIT_LIST_HEAD [2022-10-17 10:15:34,978 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-10-17 10:15:34,978 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-10-17 10:15:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_kobject_put [2022-10-17 10:15:34,979 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_kobject_put [2022-10-17 10:15:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-10-17 10:15:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-10-17 10:15:34,979 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-10-17 10:15:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-10-17 10:15:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~intINTTYPE4 [2022-10-17 10:15:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-10-17 10:15:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-10-17 10:15:34,980 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-10-17 10:15:34,980 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-10-17 10:15:35,257 INFO L235 CfgBuilder]: Building ICFG [2022-10-17 10:15:35,259 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-10-17 10:15:35,846 INFO L276 CfgBuilder]: Performing block encoding [2022-10-17 10:15:35,858 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-10-17 10:15:35,858 INFO L300 CfgBuilder]: Removed 0 assume(true) statements. [2022-10-17 10:15:35,861 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:35 BoogieIcfgContainer [2022-10-17 10:15:35,861 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-10-17 10:15:35,864 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-10-17 10:15:35,865 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-10-17 10:15:35,868 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-10-17 10:15:35,868 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 17.10 10:15:33" (1/3) ... [2022-10-17 10:15:35,869 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9d1ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:35, skipping insertion in model container [2022-10-17 10:15:35,870 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 17.10 10:15:34" (2/3) ... [2022-10-17 10:15:35,871 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@2f9d1ea1 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 17.10 10:15:35, skipping insertion in model container [2022-10-17 10:15:35,871 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 17.10 10:15:35" (3/3) ... [2022-10-17 10:15:35,875 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test22_3-1.i [2022-10-17 10:15:35,895 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-10-17 10:15:35,895 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 25 error locations. [2022-10-17 10:15:35,971 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-10-17 10:15:35,978 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;@54b5398e, mLbeIndependenceSettings=[IndependenceType=SEMANTIC, AbstractionType=NONE, UseConditional=false, UseSemiCommutativity=true, Solver=Z3, SolverTimeout=1000ms] [2022-10-17 10:15:35,979 INFO L358 AbstractCegarLoop]: Starting to check reachability of 25 error locations. [2022-10-17 10:15:35,988 INFO L276 IsEmpty]: Start isEmpty. Operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:35,996 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:15:35,996 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:35,997 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:35,997 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:36,003 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:36,003 INFO L85 PathProgramCache]: Analyzing trace with hash 886333963, now seen corresponding path program 1 times [2022-10-17 10:15:36,018 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:36,018 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [201164202] [2022-10-17 10:15:36,018 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:36,019 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:36,019 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:36,022 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:36,034 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-10-17 10:15:36,149 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:36,153 INFO L263 TraceCheckSpWp]: Trace formula consists of 42 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:36,161 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:36,245 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 10:15:36,332 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 10:15:36,333 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:36,334 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:36,334 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [201164202] [2022-10-17 10:15:36,335 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [201164202] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:36,336 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:36,336 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:15:36,337 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1467359217] [2022-10-17 10:15:36,339 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:36,344 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:36,345 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:36,383 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:36,383 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:36,386 INFO L87 Difference]: Start difference. First operand has 92 states, 59 states have (on average 1.576271186440678) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Second operand has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10:15:36,927 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:36,927 INFO L93 Difference]: Finished difference Result 158 states and 178 transitions. [2022-10-17 10:15:36,929 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:36,930 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10 [2022-10-17 10:15:36,931 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:36,943 INFO L225 Difference]: With dead ends: 158 [2022-10-17 10:15:36,943 INFO L226 Difference]: Without dead ends: 156 [2022-10-17 10:15:36,945 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 5 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=29, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:36,949 INFO L413 NwaCegarLoop]: 103 mSDtfsCounter, 97 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 187 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 387 SdHoareTripleChecker+Invalid, 190 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 187 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:36,951 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 387 Invalid, 190 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 187 Invalid, 0 Unknown, 0 Unchecked, 0.4s Time] [2022-10-17 10:15:36,971 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 156 states. [2022-10-17 10:15:36,996 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 156 to 95. [2022-10-17 10:15:36,997 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 62 states have (on average 1.5483870967741935) internal successors, (96), 87 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:37,000 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 105 transitions. [2022-10-17 10:15:37,002 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 105 transitions. Word has length 10 [2022-10-17 10:15:37,002 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:37,002 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 105 transitions. [2022-10-17 10:15:37,003 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 5 states have (on average 1.6) internal successors, (8), 5 states have internal predecessors, (8), 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 10:15:37,003 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 105 transitions. [2022-10-17 10:15:37,004 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 11 [2022-10-17 10:15:37,004 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:37,004 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:37,024 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:37,224 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:37,225 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:37,225 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:37,225 INFO L85 PathProgramCache]: Analyzing trace with hash 914963114, now seen corresponding path program 1 times [2022-10-17 10:15:37,226 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:37,226 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [736889795] [2022-10-17 10:15:37,227 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:37,227 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:37,227 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:37,231 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:37,234 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-10-17 10:15:37,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:37,289 INFO L263 TraceCheckSpWp]: Trace formula consists of 36 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:37,290 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:37,357 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 10:15:37,357 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:37,357 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:37,357 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [736889795] [2022-10-17 10:15:37,358 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [736889795] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:37,358 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:37,358 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:15:37,359 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [9711569] [2022-10-17 10:15:37,359 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:37,360 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:15:37,360 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:37,361 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:15:37,361 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:37,362 INFO L87 Difference]: Start difference. First operand 95 states and 105 transitions. Second operand has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10:15:37,397 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:37,397 INFO L93 Difference]: Finished difference Result 114 states and 125 transitions. [2022-10-17 10:15:37,398 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:37,398 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10 [2022-10-17 10:15:37,399 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:37,400 INFO L225 Difference]: With dead ends: 114 [2022-10-17 10:15:37,400 INFO L226 Difference]: Without dead ends: 114 [2022-10-17 10:15:37,401 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 9 GetRequests, 6 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 10:15:37,402 INFO L413 NwaCegarLoop]: 102 mSDtfsCounter, 19 mSDsluCounter, 291 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 393 SdHoareTripleChecker+Invalid, 16 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:37,403 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 393 Invalid, 16 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:37,405 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 114 states. [2022-10-17 10:15:37,412 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 114 to 93. [2022-10-17 10:15:37,413 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 61 states have (on average 1.5245901639344261) internal successors, (93), 85 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:37,415 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 102 transitions. [2022-10-17 10:15:37,415 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 102 transitions. Word has length 10 [2022-10-17 10:15:37,416 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:37,416 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 102 transitions. [2022-10-17 10:15:37,416 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.6) internal successors, (8), 4 states have internal predecessors, (8), 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 10:15:37,416 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 102 transitions. [2022-10-17 10:15:37,417 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-10-17 10:15:37,417 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:37,417 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:37,433 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (3)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:37,629 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:37,629 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:37,630 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:37,630 INFO L85 PathProgramCache]: Analyzing trace with hash 1706549126, now seen corresponding path program 1 times [2022-10-17 10:15:37,630 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:37,631 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [756896187] [2022-10-17 10:15:37,631 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:37,631 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:37,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:37,632 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:37,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-10-17 10:15:37,711 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:37,713 INFO L263 TraceCheckSpWp]: Trace formula consists of 43 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:37,715 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:37,759 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 10:15:37,898 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 10:15:37,899 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:37,899 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:37,899 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [756896187] [2022-10-17 10:15:37,899 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [756896187] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:37,899 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:37,899 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:37,900 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2055780176] [2022-10-17 10:15:37,900 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:37,900 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:37,900 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:37,902 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:37,902 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:37,902 INFO L87 Difference]: Start difference. First operand 93 states and 102 transitions. Second operand has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 10:15:38,511 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:38,511 INFO L93 Difference]: Finished difference Result 134 states and 147 transitions. [2022-10-17 10:15:38,513 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:38,513 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 11 [2022-10-17 10:15:38,513 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:38,514 INFO L225 Difference]: With dead ends: 134 [2022-10-17 10:15:38,515 INFO L226 Difference]: Without dead ends: 134 [2022-10-17 10:15:38,515 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 5 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=19, Invalid=53, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:38,518 INFO L413 NwaCegarLoop]: 101 mSDtfsCounter, 73 mSDsluCounter, 368 mSDsCounter, 0 mSdLazyCounter, 180 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 469 SdHoareTripleChecker+Invalid, 186 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 180 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:38,519 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 469 Invalid, 186 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 180 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:15:38,520 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 134 states. [2022-10-17 10:15:38,528 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 134 to 92. [2022-10-17 10:15:38,528 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.5081967213114753) internal successors, (92), 84 states have internal predecessors, (92), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:38,530 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 101 transitions. [2022-10-17 10:15:38,531 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 101 transitions. Word has length 11 [2022-10-17 10:15:38,531 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:38,531 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 101 transitions. [2022-10-17 10:15:38,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 1.5) internal successors, (9), 6 states have internal predecessors, (9), 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 10:15:38,532 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 101 transitions. [2022-10-17 10:15:38,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:15:38,533 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:38,533 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:38,547 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (4)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:38,744 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:38,744 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:38,745 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:38,745 INFO L85 PathProgramCache]: Analyzing trace with hash 1363388625, now seen corresponding path program 1 times [2022-10-17 10:15:38,745 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:38,745 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [144526400] [2022-10-17 10:15:38,746 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:38,746 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:38,746 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:38,748 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:38,756 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-10-17 10:15:38,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:38,824 INFO L263 TraceCheckSpWp]: Trace formula consists of 62 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:15:38,826 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:38,861 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 10:15:38,861 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:38,861 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:38,862 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [144526400] [2022-10-17 10:15:38,862 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [144526400] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:38,862 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:38,863 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-10-17 10:15:38,863 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [32290733] [2022-10-17 10:15:38,863 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:38,863 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-10-17 10:15:38,864 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:38,864 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-10-17 10:15:38,864 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:38,865 INFO L87 Difference]: Start difference. First operand 92 states and 101 transitions. Second operand has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 10:15:38,900 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:38,900 INFO L93 Difference]: Finished difference Result 113 states and 123 transitions. [2022-10-17 10:15:38,901 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:38,901 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 12 [2022-10-17 10:15:38,901 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:38,902 INFO L225 Difference]: With dead ends: 113 [2022-10-17 10:15:38,902 INFO L226 Difference]: Without dead ends: 113 [2022-10-17 10:15:38,903 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 11 GetRequests, 8 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 10:15:38,911 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 35 mSDsluCounter, 307 mSDsCounter, 0 mSdLazyCounter, 18 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 38 SdHoareTripleChecker+Valid, 423 SdHoareTripleChecker+Invalid, 18 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 18 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:38,913 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [38 Valid, 423 Invalid, 18 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 18 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:38,925 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-17 10:15:38,936 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 92. [2022-10-17 10:15:38,941 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 92 states, 61 states have (on average 1.4918032786885247) internal successors, (91), 84 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:38,945 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 92 states to 92 states and 100 transitions. [2022-10-17 10:15:38,949 INFO L78 Accepts]: Start accepts. Automaton has 92 states and 100 transitions. Word has length 12 [2022-10-17 10:15:38,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:38,950 INFO L495 AbstractCegarLoop]: Abstraction has 92 states and 100 transitions. [2022-10-17 10:15:38,950 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 2.0) internal successors, (10), 4 states have internal predecessors, (10), 1 states have call successors, (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 10:15:38,950 INFO L276 IsEmpty]: Start isEmpty. Operand 92 states and 100 transitions. [2022-10-17 10:15:38,951 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 13 [2022-10-17 10:15:38,954 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:38,955 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:38,983 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (5)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:39,173 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,173 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:39,173 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:39,173 INFO L85 PathProgramCache]: Analyzing trace with hash -1188768336, now seen corresponding path program 1 times [2022-10-17 10:15:39,174 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:39,174 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [121954085] [2022-10-17 10:15:39,174 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:39,174 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,174 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:39,183 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:39,187 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-10-17 10:15:39,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:39,270 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:39,271 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:39,307 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 10:15:39,307 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:39,307 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:39,307 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [121954085] [2022-10-17 10:15:39,307 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [121954085] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:39,307 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:39,308 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:15:39,308 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [368421865] [2022-10-17 10:15:39,308 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:39,308 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:39,308 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:39,309 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:39,309 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:39,309 INFO L87 Difference]: Start difference. First operand 92 states and 100 transitions. Second operand has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:15:39,353 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:39,353 INFO L93 Difference]: Finished difference Result 112 states and 122 transitions. [2022-10-17 10:15:39,354 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-10-17 10:15:39,354 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 12 [2022-10-17 10:15:39,354 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:39,355 INFO L225 Difference]: With dead ends: 112 [2022-10-17 10:15:39,355 INFO L226 Difference]: Without dead ends: 112 [2022-10-17 10:15:39,357 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 12 GetRequests, 9 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-10-17 10:15:39,359 INFO L413 NwaCegarLoop]: 98 mSDtfsCounter, 21 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 5 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 23 SdHoareTripleChecker+Valid, 288 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 5 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:39,361 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [23 Valid, 288 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [5 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:39,361 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 112 states. [2022-10-17 10:15:39,368 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 112 to 94. [2022-10-17 10:15:39,373 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 63 states have (on average 1.4761904761904763) internal successors, (93), 86 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:39,376 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 102 transitions. [2022-10-17 10:15:39,377 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 102 transitions. Word has length 12 [2022-10-17 10:15:39,377 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:39,378 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 102 transitions. [2022-10-17 10:15:39,378 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 2.5) internal successors, (10), 4 states have internal predecessors, (10), 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 10:15:39,378 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 102 transitions. [2022-10-17 10:15:39,379 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 17 [2022-10-17 10:15:39,379 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:39,379 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:39,399 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (6)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:39,589 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,589 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:39,589 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:39,589 INFO L85 PathProgramCache]: Analyzing trace with hash 86428473, now seen corresponding path program 1 times [2022-10-17 10:15:39,590 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:39,590 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1444422150] [2022-10-17 10:15:39,590 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:39,590 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,590 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:39,593 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:39,594 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-10-17 10:15:39,657 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:39,660 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 3 conjunts are in the unsatisfiable core [2022-10-17 10:15:39,662 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:39,689 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 10:15:39,689 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:39,689 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:39,689 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1444422150] [2022-10-17 10:15:39,690 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1444422150] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:39,690 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:39,690 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-10-17 10:15:39,690 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [935438255] [2022-10-17 10:15:39,690 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:39,691 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:39,691 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:39,691 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:39,692 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:39,692 INFO L87 Difference]: Start difference. First operand 94 states and 102 transitions. Second operand has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 10:15:39,724 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:39,724 INFO L93 Difference]: Finished difference Result 104 states and 113 transitions. [2022-10-17 10:15:39,725 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:39,725 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 16 [2022-10-17 10:15:39,725 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:39,726 INFO L225 Difference]: With dead ends: 104 [2022-10-17 10:15:39,727 INFO L226 Difference]: Without dead ends: 104 [2022-10-17 10:15:39,727 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 15 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=6, Invalid=6, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:39,728 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 33 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 9 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 36 SdHoareTripleChecker+Valid, 208 SdHoareTripleChecker+Invalid, 10 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 9 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:39,728 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [36 Valid, 208 Invalid, 10 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 9 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:39,729 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 104 states. [2022-10-17 10:15:39,735 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 104 to 95. [2022-10-17 10:15:39,735 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 95 states, 64 states have (on average 1.46875) internal successors, (94), 87 states have internal predecessors, (94), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:39,736 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 95 states to 95 states and 103 transitions. [2022-10-17 10:15:39,737 INFO L78 Accepts]: Start accepts. Automaton has 95 states and 103 transitions. Word has length 16 [2022-10-17 10:15:39,737 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:39,737 INFO L495 AbstractCegarLoop]: Abstraction has 95 states and 103 transitions. [2022-10-17 10:15:39,737 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 3.5) internal successors, (14), 4 states have internal predecessors, (14), 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 10:15:39,737 INFO L276 IsEmpty]: Start isEmpty. Operand 95 states and 103 transitions. [2022-10-17 10:15:39,738 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 18 [2022-10-17 10:15:39,738 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:39,738 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:39,755 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (7)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:39,957 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,957 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:39,957 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:39,958 INFO L85 PathProgramCache]: Analyzing trace with hash -1674943760, now seen corresponding path program 1 times [2022-10-17 10:15:39,958 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:39,958 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [382356687] [2022-10-17 10:15:39,958 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:39,958 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:39,958 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:39,959 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:39,960 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-10-17 10:15:40,030 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:40,033 INFO L263 TraceCheckSpWp]: Trace formula consists of 76 conjuncts, 4 conjunts are in the unsatisfiable core [2022-10-17 10:15:40,034 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:40,078 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 10:15:40,078 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:40,145 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 10:15:40,147 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:40,147 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [382356687] [2022-10-17 10:15:40,148 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [382356687] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:40,148 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:40,148 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-10-17 10:15:40,148 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [503916445] [2022-10-17 10:15:40,149 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:40,149 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:15:40,149 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:40,150 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:15:40,150 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:15:40,150 INFO L87 Difference]: Start difference. First operand 95 states and 103 transitions. Second operand has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 10:15:40,260 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:40,261 INFO L93 Difference]: Finished difference Result 107 states and 116 transitions. [2022-10-17 10:15:40,261 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:40,264 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 17 [2022-10-17 10:15:40,264 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:40,266 INFO L225 Difference]: With dead ends: 107 [2022-10-17 10:15:40,267 INFO L226 Difference]: Without dead ends: 107 [2022-10-17 10:15:40,268 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 9 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=38, Invalid=52, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:40,269 INFO L413 NwaCegarLoop]: 106 mSDtfsCounter, 66 mSDsluCounter, 275 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 14 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 69 SdHoareTripleChecker+Valid, 381 SdHoareTripleChecker+Invalid, 34 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 14 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:40,269 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [69 Valid, 381 Invalid, 34 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [14 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:40,270 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-17 10:15:40,285 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 98. [2022-10-17 10:15:40,286 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 67 states have (on average 1.4477611940298507) internal successors, (97), 90 states have internal predecessors, (97), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (5), 5 states have call predecessors, (5), 4 states have call successors, (5) [2022-10-17 10:15:40,290 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 106 transitions. [2022-10-17 10:15:40,290 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 106 transitions. Word has length 17 [2022-10-17 10:15:40,290 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:40,291 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 106 transitions. [2022-10-17 10:15:40,291 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 2.5) internal successors, (20), 8 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 10:15:40,291 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 106 transitions. [2022-10-17 10:15:40,292 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 19 [2022-10-17 10:15:40,292 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:40,292 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:40,300 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-10-17 10:15:40,492 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:40,493 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:40,493 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:40,493 INFO L85 PathProgramCache]: Analyzing trace with hash 1276371002, now seen corresponding path program 1 times [2022-10-17 10:15:40,494 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:40,494 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [240891860] [2022-10-17 10:15:40,494 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:40,494 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:40,495 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:40,495 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:40,498 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-10-17 10:15:40,573 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:40,576 INFO L263 TraceCheckSpWp]: Trace formula consists of 91 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:40,578 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:40,707 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 10:15:40,707 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:40,707 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:40,707 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [240891860] [2022-10-17 10:15:40,707 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [240891860] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:40,707 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:40,707 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:40,708 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1739174842] [2022-10-17 10:15:40,708 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:40,708 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:40,708 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:40,708 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:40,709 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:40,709 INFO L87 Difference]: Start difference. First operand 98 states and 106 transitions. Second operand has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:40,829 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:40,829 INFO L93 Difference]: Finished difference Result 113 states and 122 transitions. [2022-10-17 10:15:40,830 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:40,830 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 18 [2022-10-17 10:15:40,830 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:40,831 INFO L225 Difference]: With dead ends: 113 [2022-10-17 10:15:40,831 INFO L226 Difference]: Without dead ends: 113 [2022-10-17 10:15:40,832 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=25, Invalid=65, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:40,832 INFO L413 NwaCegarLoop]: 93 mSDtfsCounter, 21 mSDsluCounter, 452 mSDsCounter, 0 mSdLazyCounter, 41 mSolverCounterSat, 8 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 21 SdHoareTripleChecker+Valid, 545 SdHoareTripleChecker+Invalid, 49 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 8 IncrementalHoareTripleChecker+Valid, 41 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:40,833 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [21 Valid, 545 Invalid, 49 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [8 Valid, 41 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:40,833 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 113 states. [2022-10-17 10:15:40,837 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 113 to 108. [2022-10-17 10:15:40,838 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 108 states, 74 states have (on average 1.4054054054054055) internal successors, (104), 98 states have internal predecessors, (104), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-10-17 10:15:40,839 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 108 states to 108 states and 117 transitions. [2022-10-17 10:15:40,839 INFO L78 Accepts]: Start accepts. Automaton has 108 states and 117 transitions. Word has length 18 [2022-10-17 10:15:40,839 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:40,840 INFO L495 AbstractCegarLoop]: Abstraction has 108 states and 117 transitions. [2022-10-17 10:15:40,840 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 6 states have (on average 2.5) internal successors, (15), 6 states have internal predecessors, (15), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:40,840 INFO L276 IsEmpty]: Start isEmpty. Operand 108 states and 117 transitions. [2022-10-17 10:15:40,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:15:40,841 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:40,841 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:40,858 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (9)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:41,044 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:41,045 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:41,045 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:41,045 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719801, now seen corresponding path program 2 times [2022-10-17 10:15:41,045 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:41,045 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [131556341] [2022-10-17 10:15:41,045 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:41,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:41,046 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:41,046 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:41,047 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-10-17 10:15:41,131 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:15:41,131 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:41,134 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:15:41,138 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:41,150 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 10:15:41,288 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 10 trivial. 0 not checked. [2022-10-17 10:15:41,288 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:41,289 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:41,289 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [131556341] [2022-10-17 10:15:41,289 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [131556341] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:41,289 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:41,289 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:41,291 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2020708801] [2022-10-17 10:15:41,291 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:41,292 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-10-17 10:15:41,292 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:41,293 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-10-17 10:15:41,293 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2022-10-17 10:15:41,294 INFO L87 Difference]: Start difference. First operand 108 states and 117 transitions. Second operand has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10:15:41,857 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:41,857 INFO L93 Difference]: Finished difference Result 142 states and 155 transitions. [2022-10-17 10:15:41,858 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-10-17 10:15:41,858 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 20 [2022-10-17 10:15:41,858 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:41,860 INFO L225 Difference]: With dead ends: 142 [2022-10-17 10:15:41,860 INFO L226 Difference]: Without dead ends: 142 [2022-10-17 10:15:41,860 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 22 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=31, Invalid=79, Unknown=0, NotChecked=0, Total=110 [2022-10-17 10:15:41,861 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 95 mSDsluCounter, 421 mSDsCounter, 0 mSdLazyCounter, 261 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 95 SdHoareTripleChecker+Valid, 537 SdHoareTripleChecker+Invalid, 265 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 261 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:41,862 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [95 Valid, 537 Invalid, 265 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 261 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:15:41,862 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 142 states. [2022-10-17 10:15:41,867 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 142 to 107. [2022-10-17 10:15:41,867 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 74 states have (on average 1.3918918918918919) internal successors, (103), 97 states have internal predecessors, (103), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-10-17 10:15:41,868 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 116 transitions. [2022-10-17 10:15:41,868 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 116 transitions. Word has length 20 [2022-10-17 10:15:41,869 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:41,869 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 116 transitions. [2022-10-17 10:15:41,869 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 2.142857142857143) internal successors, (15), 7 states have internal predecessors, (15), 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 10:15:41,869 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 116 transitions. [2022-10-17 10:15:41,870 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 21 [2022-10-17 10:15:41,870 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:41,870 INFO L195 NwaCegarLoop]: trace histogram [4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:41,887 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:42,070 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:42,071 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:42,071 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:42,071 INFO L85 PathProgramCache]: Analyzing trace with hash 1965719802, now seen corresponding path program 1 times [2022-10-17 10:15:42,072 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:42,072 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1811227494] [2022-10-17 10:15:42,072 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:42,072 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:42,072 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:42,078 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:42,083 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-10-17 10:15:42,176 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:42,182 INFO L263 TraceCheckSpWp]: Trace formula consists of 109 conjuncts, 7 conjunts are in the unsatisfiable core [2022-10-17 10:15:42,184 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:42,291 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:42,291 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:42,523 INFO L134 CoverageAnalysis]: Checked inductivity of 10 backedges. 0 proven. 10 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:42,523 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:42,523 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1811227494] [2022-10-17 10:15:42,524 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1811227494] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:42,524 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:42,524 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 14 [2022-10-17 10:15:42,524 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [741196511] [2022-10-17 10:15:42,524 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:42,525 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:15:42,525 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:42,525 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:15:42,525 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=61, Invalid=121, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:15:42,526 INFO L87 Difference]: Start difference. First operand 107 states and 116 transitions. Second operand has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 10:15:42,917 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:42,917 INFO L93 Difference]: Finished difference Result 116 states and 124 transitions. [2022-10-17 10:15:42,918 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:42,918 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 20 [2022-10-17 10:15:42,918 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:42,919 INFO L225 Difference]: With dead ends: 116 [2022-10-17 10:15:42,919 INFO L226 Difference]: Without dead ends: 116 [2022-10-17 10:15:42,920 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 43 GetRequests, 26 SyntacticMatches, 0 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=131, Invalid=211, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:15:42,921 INFO L413 NwaCegarLoop]: 105 mSDtfsCounter, 64 mSDsluCounter, 677 mSDsCounter, 0 mSdLazyCounter, 67 mSolverCounterSat, 32 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 67 SdHoareTripleChecker+Valid, 782 SdHoareTripleChecker+Invalid, 99 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 32 IncrementalHoareTripleChecker+Valid, 67 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:42,921 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [67 Valid, 782 Invalid, 99 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [32 Valid, 67 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:15:42,922 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-17 10:15:42,926 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 113. [2022-10-17 10:15:42,926 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 113 states, 80 states have (on average 1.3625) internal successors, (109), 103 states have internal predecessors, (109), 6 states have call successors, (6), 4 states have call predecessors, (6), 5 states have return successors, (7), 6 states have call predecessors, (7), 6 states have call successors, (7) [2022-10-17 10:15:42,927 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 113 states to 113 states and 122 transitions. [2022-10-17 10:15:42,927 INFO L78 Accepts]: Start accepts. Automaton has 113 states and 122 transitions. Word has length 20 [2022-10-17 10:15:42,928 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:42,928 INFO L495 AbstractCegarLoop]: Abstraction has 113 states and 122 transitions. [2022-10-17 10:15:42,928 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 14 states have (on average 1.8571428571428572) internal successors, (26), 14 states have internal predecessors, (26), 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 10:15:42,928 INFO L276 IsEmpty]: Start isEmpty. Operand 113 states and 122 transitions. [2022-10-17 10:15:42,929 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 28 [2022-10-17 10:15:42,929 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:42,929 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:42,947 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (11)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:43,143 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:43,143 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr8ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:43,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:43,144 INFO L85 PathProgramCache]: Analyzing trace with hash 1184735654, now seen corresponding path program 1 times [2022-10-17 10:15:43,144 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:43,144 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1288296544] [2022-10-17 10:15:43,144 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:43,144 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:43,144 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:43,145 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:43,146 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-10-17 10:15:43,228 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:43,231 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:15:43,233 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:43,302 INFO L134 CoverageAnalysis]: Checked inductivity of 4 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-10-17 10:15:43,302 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:43,302 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:43,302 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1288296544] [2022-10-17 10:15:43,303 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1288296544] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:43,303 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:43,303 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-10-17 10:15:43,303 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1261722399] [2022-10-17 10:15:43,303 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:43,304 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-10-17 10:15:43,304 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:43,305 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-10-17 10:15:43,305 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-10-17 10:15:43,305 INFO L87 Difference]: Start difference. First operand 113 states and 122 transitions. Second operand has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:15:43,474 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:43,475 INFO L93 Difference]: Finished difference Result 119 states and 128 transitions. [2022-10-17 10:15:43,475 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-10-17 10:15:43,475 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) Word has length 27 [2022-10-17 10:15:43,476 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:43,477 INFO L225 Difference]: With dead ends: 119 [2022-10-17 10:15:43,477 INFO L226 Difference]: Without dead ends: 101 [2022-10-17 10:15:43,477 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 26 GetRequests, 24 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 10:15:43,478 INFO L413 NwaCegarLoop]: 85 mSDtfsCounter, 31 mSDsluCounter, 103 mSDsCounter, 0 mSdLazyCounter, 71 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 31 SdHoareTripleChecker+Valid, 188 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 10:15:43,478 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [31 Valid, 188 Invalid, 74 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 71 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-10-17 10:15:43,479 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-10-17 10:15:43,482 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 97. [2022-10-17 10:15:43,482 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 97 states, 68 states have (on average 1.411764705882353) internal successors, (96), 90 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:43,483 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 97 states to 97 states and 104 transitions. [2022-10-17 10:15:43,483 INFO L78 Accepts]: Start accepts. Automaton has 97 states and 104 transitions. Word has length 27 [2022-10-17 10:15:43,483 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:43,483 INFO L495 AbstractCegarLoop]: Abstraction has 97 states and 104 transitions. [2022-10-17 10:15:43,483 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 6.0) internal successors, (18), 4 states have internal predecessors, (18), 1 states have call successors, (3), 1 states have call predecessors, (3), 1 states have return successors, (3), 1 states have call predecessors, (3), 1 states have call successors, (3) [2022-10-17 10:15:43,484 INFO L276 IsEmpty]: Start isEmpty. Operand 97 states and 104 transitions. [2022-10-17 10:15:43,484 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 27 [2022-10-17 10:15:43,484 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:43,484 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:43,499 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (12)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:43,696 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:43,696 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:43,697 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:43,697 INFO L85 PathProgramCache]: Analyzing trace with hash -103060070, now seen corresponding path program 2 times [2022-10-17 10:15:43,697 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:43,697 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [936422210] [2022-10-17 10:15:43,697 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:43,697 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:43,698 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:43,699 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:43,708 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-10-17 10:15:43,793 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:15:43,793 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:43,795 INFO L263 TraceCheckSpWp]: Trace formula consists of 65 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 10:15:43,797 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:43,815 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 10:15:44,075 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 55 trivial. 0 not checked. [2022-10-17 10:15:44,075 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:44,075 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:44,075 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [936422210] [2022-10-17 10:15:44,075 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [936422210] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:44,075 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:44,076 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:15:44,076 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1142952664] [2022-10-17 10:15:44,076 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:44,076 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:15:44,076 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:44,077 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:15:44,077 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:44,077 INFO L87 Difference]: Start difference. First operand 97 states and 104 transitions. Second operand has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 10:15:44,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:44,804 INFO L93 Difference]: Finished difference Result 141 states and 152 transitions. [2022-10-17 10:15:44,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:44,805 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 26 [2022-10-17 10:15:44,805 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:44,806 INFO L225 Difference]: With dead ends: 141 [2022-10-17 10:15:44,806 INFO L226 Difference]: Without dead ends: 141 [2022-10-17 10:15:44,807 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 29 GetRequests, 18 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=37, Invalid=119, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:15:44,807 INFO L413 NwaCegarLoop]: 116 mSDtfsCounter, 105 mSDsluCounter, 504 mSDsCounter, 0 mSdLazyCounter, 273 mSolverCounterSat, 22 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 105 SdHoareTripleChecker+Valid, 620 SdHoareTripleChecker+Invalid, 295 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 22 IncrementalHoareTripleChecker+Valid, 273 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:44,808 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [105 Valid, 620 Invalid, 295 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [22 Valid, 273 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2022-10-17 10:15:44,808 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 141 states. [2022-10-17 10:15:44,811 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 141 to 96. [2022-10-17 10:15:44,812 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 68 states have (on average 1.3970588235294117) internal successors, (95), 89 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:44,813 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 103 transitions. [2022-10-17 10:15:44,813 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 103 transitions. Word has length 26 [2022-10-17 10:15:44,813 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:44,814 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 103 transitions. [2022-10-17 10:15:44,814 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 1.875) internal successors, (15), 8 states have internal predecessors, (15), 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 10:15:44,814 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 103 transitions. [2022-10-17 10:15:44,815 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 29 [2022-10-17 10:15:44,815 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:44,815 INFO L195 NwaCegarLoop]: trace histogram [10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:44,831 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (13)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:45,027 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:45,027 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:45,028 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:45,028 INFO L85 PathProgramCache]: Analyzing trace with hash -257987495, now seen corresponding path program 1 times [2022-10-17 10:15:45,028 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:45,028 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [403013345] [2022-10-17 10:15:45,028 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:45,029 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:45,029 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:45,030 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:45,037 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-10-17 10:15:45,160 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:45,165 INFO L263 TraceCheckSpWp]: Trace formula consists of 190 conjuncts, 13 conjunts are in the unsatisfiable core [2022-10-17 10:15:45,168 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:45,418 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:45,418 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-10-17 10:15:45,892 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 55 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-10-17 10:15:45,893 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:45,893 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [403013345] [2022-10-17 10:15:45,893 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [403013345] provided 0 perfect and 2 imperfect interpolant sequences [2022-10-17 10:15:45,893 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-10-17 10:15:45,893 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [14, 14] total 26 [2022-10-17 10:15:45,893 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [760466011] [2022-10-17 10:15:45,894 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-10-17 10:15:45,894 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 26 states [2022-10-17 10:15:45,894 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:45,895 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 26 interpolants. [2022-10-17 10:15:45,895 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=178, Invalid=472, Unknown=0, NotChecked=0, Total=650 [2022-10-17 10:15:45,896 INFO L87 Difference]: Start difference. First operand 96 states and 103 transitions. Second operand has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 10:15:46,402 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:46,408 INFO L93 Difference]: Finished difference Result 102 states and 109 transitions. [2022-10-17 10:15:46,409 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 19 states. [2022-10-17 10:15:46,410 INFO L78 Accepts]: Start accepts. Automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 28 [2022-10-17 10:15:46,410 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:46,411 INFO L225 Difference]: With dead ends: 102 [2022-10-17 10:15:46,411 INFO L226 Difference]: Without dead ends: 102 [2022-10-17 10:15:46,412 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 59 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 29 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 193 ImplicationChecksByTransitivity, 0.8s TimeCoverageRelationStatistics Valid=278, Invalid=652, Unknown=0, NotChecked=0, Total=930 [2022-10-17 10:15:46,412 INFO L413 NwaCegarLoop]: 90 mSDtfsCounter, 31 mSDsluCounter, 1146 mSDsCounter, 0 mSdLazyCounter, 179 mSolverCounterSat, 31 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 34 SdHoareTripleChecker+Valid, 1236 SdHoareTripleChecker+Invalid, 210 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 31 IncrementalHoareTripleChecker+Valid, 179 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:46,413 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [34 Valid, 1236 Invalid, 210 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [31 Valid, 179 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:15:46,413 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-17 10:15:46,415 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-10-17 10:15:46,416 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.364864864864865) internal successors, (101), 95 states have internal predecessors, (101), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:46,417 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 109 transitions. [2022-10-17 10:15:46,417 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 109 transitions. Word has length 28 [2022-10-17 10:15:46,418 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:46,418 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 109 transitions. [2022-10-17 10:15:46,418 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 26 states, 26 states have (on average 1.5384615384615385) internal successors, (40), 26 states have internal predecessors, (40), 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 10:15:46,418 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 109 transitions. [2022-10-17 10:15:46,419 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-10-17 10:15:46,419 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:46,419 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:46,436 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:46,631 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:46,631 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:46,631 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:46,631 INFO L85 PathProgramCache]: Analyzing trace with hash -2039891719, now seen corresponding path program 2 times [2022-10-17 10:15:46,632 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:46,632 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [245310233] [2022-10-17 10:15:46,632 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-10-17 10:15:46,632 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:46,632 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:46,633 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:46,636 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Waiting until timeout for monitored process [2022-10-17 10:15:46,733 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-10-17 10:15:46,733 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-10-17 10:15:46,736 INFO L263 TraceCheckSpWp]: Trace formula consists of 80 conjuncts, 6 conjunts are in the unsatisfiable core [2022-10-17 10:15:46,738 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:46,811 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:46,811 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:46,812 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:46,812 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [245310233] [2022-10-17 10:15:46,812 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [245310233] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:46,812 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:46,812 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2022-10-17 10:15:46,812 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [63495367] [2022-10-17 10:15:46,813 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:46,813 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2022-10-17 10:15:46,813 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:46,814 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2022-10-17 10:15:46,814 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2022-10-17 10:15:46,814 INFO L87 Difference]: Start difference. First operand 102 states and 109 transitions. Second operand has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 10:15:46,856 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:46,856 INFO L93 Difference]: Finished difference Result 102 states and 108 transitions. [2022-10-17 10:15:46,856 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-10-17 10:15:46,856 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 34 [2022-10-17 10:15:46,857 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:46,858 INFO L225 Difference]: With dead ends: 102 [2022-10-17 10:15:46,858 INFO L226 Difference]: Without dead ends: 102 [2022-10-17 10:15:46,858 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 29 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 10:15:46,859 INFO L413 NwaCegarLoop]: 87 mSDtfsCounter, 53 mSDsluCounter, 284 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 53 SdHoareTripleChecker+Valid, 371 SdHoareTripleChecker+Invalid, 26 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:46,859 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [53 Valid, 371 Invalid, 26 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:46,860 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 102 states. [2022-10-17 10:15:46,862 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 102 to 102. [2022-10-17 10:15:46,862 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 102 states, 74 states have (on average 1.3513513513513513) internal successors, (100), 95 states have internal predecessors, (100), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:46,863 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 102 states to 102 states and 108 transitions. [2022-10-17 10:15:46,864 INFO L78 Accepts]: Start accepts. Automaton has 102 states and 108 transitions. Word has length 34 [2022-10-17 10:15:46,864 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:46,864 INFO L495 AbstractCegarLoop]: Abstraction has 102 states and 108 transitions. [2022-10-17 10:15:46,864 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 2.8333333333333335) internal successors, (17), 5 states have internal predecessors, (17), 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 10:15:46,864 INFO L276 IsEmpty]: Start isEmpty. Operand 102 states and 108 transitions. [2022-10-17 10:15:46,865 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:15:46,865 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:46,865 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:46,880 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (15)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:47,065 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:47,066 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting LDV_INIT_LIST_HEADErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:47,066 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:47,066 INFO L85 PathProgramCache]: Analyzing trace with hash -382086172, now seen corresponding path program 1 times [2022-10-17 10:15:47,067 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:47,067 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [200888714] [2022-10-17 10:15:47,067 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:47,067 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:47,067 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:47,068 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:47,073 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-10-17 10:15:47,267 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:47,279 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 12 conjunts are in the unsatisfiable core [2022-10-17 10:15:47,282 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:47,289 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 10:15:47,423 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:47,423 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:47,424 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:47,424 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [200888714] [2022-10-17 10:15:47,424 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [200888714] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:47,424 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:47,424 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:15:47,424 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1658429896] [2022-10-17 10:15:47,424 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:47,425 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:15:47,425 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:47,425 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:15:47,426 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=15, Invalid=57, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:47,426 INFO L87 Difference]: Start difference. First operand 102 states and 108 transitions. Second operand has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:47,820 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:47,820 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-10-17 10:15:47,820 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:47,821 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-10-17 10:15:47,821 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:47,822 INFO L225 Difference]: With dead ends: 100 [2022-10-17 10:15:47,822 INFO L226 Difference]: Without dead ends: 100 [2022-10-17 10:15:47,822 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 38 GetRequests, 28 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 2 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=29, Invalid=103, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:15:47,823 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 77 mSDsluCounter, 321 mSDsCounter, 0 mSdLazyCounter, 233 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 77 SdHoareTripleChecker+Valid, 391 SdHoareTripleChecker+Invalid, 237 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 233 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:47,823 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [77 Valid, 391 Invalid, 237 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 233 Invalid, 0 Unknown, 0 Unchecked, 0.3s Time] [2022-10-17 10:15:47,824 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-17 10:15:47,826 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 100. [2022-10-17 10:15:47,826 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 100 states, 74 states have (on average 1.3243243243243243) internal successors, (98), 93 states have internal predecessors, (98), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:47,827 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 100 states to 100 states and 106 transitions. [2022-10-17 10:15:47,827 INFO L78 Accepts]: Start accepts. Automaton has 100 states and 106 transitions. Word has length 36 [2022-10-17 10:15:47,827 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:47,827 INFO L495 AbstractCegarLoop]: Abstraction has 100 states and 106 transitions. [2022-10-17 10:15:47,827 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.25) internal successors, (18), 7 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:47,828 INFO L276 IsEmpty]: Start isEmpty. Operand 100 states and 106 transitions. [2022-10-17 10:15:47,828 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:15:47,828 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:47,828 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:47,847 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (16)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:48,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:48,048 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting LDV_INIT_LIST_HEADErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:48,048 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:48,048 INFO L85 PathProgramCache]: Analyzing trace with hash -382086171, now seen corresponding path program 1 times [2022-10-17 10:15:48,049 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:48,049 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1234032323] [2022-10-17 10:15:48,049 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:48,049 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:48,050 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:48,050 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:48,062 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-10-17 10:15:48,263 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:48,284 INFO L263 TraceCheckSpWp]: Trace formula consists of 274 conjuncts, 23 conjunts are in the unsatisfiable core [2022-10-17 10:15:48,288 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:48,306 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 10:15:48,628 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:48,628 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:48,628 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:48,629 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1234032323] [2022-10-17 10:15:48,629 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1234032323] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:48,629 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:48,629 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:15:48,629 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1569462991] [2022-10-17 10:15:48,629 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:48,630 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:15:48,630 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:48,630 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:15:48,631 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:48,631 INFO L87 Difference]: Start difference. First operand 100 states and 106 transitions. Second operand has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:49,267 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:49,267 INFO L93 Difference]: Finished difference Result 98 states and 104 transitions. [2022-10-17 10:15:49,268 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:15:49,268 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) Word has length 36 [2022-10-17 10:15:49,268 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:49,269 INFO L225 Difference]: With dead ends: 98 [2022-10-17 10:15:49,269 INFO L226 Difference]: Without dead ends: 98 [2022-10-17 10:15:49,270 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 39 GetRequests, 27 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=35, Invalid=147, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:15:49,271 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 84 mSDsluCounter, 403 mSDsCounter, 0 mSdLazyCounter, 210 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 84 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 220 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 210 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:49,271 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [84 Valid, 472 Invalid, 220 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 210 Invalid, 0 Unknown, 0 Unchecked, 0.5s Time] [2022-10-17 10:15:49,272 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-10-17 10:15:49,274 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-10-17 10:15:49,275 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2972972972972974) internal successors, (96), 91 states have internal predecessors, (96), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:49,276 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 104 transitions. [2022-10-17 10:15:49,276 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 104 transitions. Word has length 36 [2022-10-17 10:15:49,276 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:49,277 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 104 transitions. [2022-10-17 10:15:49,277 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.0) internal successors, (18), 8 states have internal predecessors, (18), 2 states have call successors, (2), 2 states have call predecessors, (2), 1 states have return successors, (1), 1 states have call predecessors, (1), 1 states have call successors, (1) [2022-10-17 10:15:49,278 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 104 transitions. [2022-10-17 10:15:49,278 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 37 [2022-10-17 10:15:49,278 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:49,279 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:49,299 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:49,494 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:49,494 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:49,494 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:49,495 INFO L85 PathProgramCache]: Analyzing trace with hash -432796251, now seen corresponding path program 1 times [2022-10-17 10:15:49,495 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:49,495 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [828608178] [2022-10-17 10:15:49,495 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:49,495 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:49,496 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:49,497 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:49,536 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-10-17 10:15:49,671 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:49,679 INFO L263 TraceCheckSpWp]: Trace formula consists of 262 conjuncts, 8 conjunts are in the unsatisfiable core [2022-10-17 10:15:49,681 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:49,769 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:49,770 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:49,770 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:49,770 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [828608178] [2022-10-17 10:15:49,770 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [828608178] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:49,771 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:49,771 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:49,771 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [976582627] [2022-10-17 10:15:49,771 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:49,772 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:49,772 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:49,772 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:49,773 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:49,773 INFO L87 Difference]: Start difference. First operand 98 states and 104 transitions. Second operand has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 10:15:49,854 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:49,854 INFO L93 Difference]: Finished difference Result 98 states and 103 transitions. [2022-10-17 10:15:49,854 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:49,855 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 36 [2022-10-17 10:15:49,855 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:49,856 INFO L225 Difference]: With dead ends: 98 [2022-10-17 10:15:49,856 INFO L226 Difference]: Without dead ends: 98 [2022-10-17 10:15:49,856 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 37 GetRequests, 30 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:49,857 INFO L413 NwaCegarLoop]: 81 mSDtfsCounter, 75 mSDsluCounter, 315 mSDsCounter, 0 mSdLazyCounter, 31 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 75 SdHoareTripleChecker+Valid, 396 SdHoareTripleChecker+Invalid, 40 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 31 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:49,868 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [75 Valid, 396 Invalid, 40 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 31 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:49,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 98 states. [2022-10-17 10:15:49,871 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 98 to 98. [2022-10-17 10:15:49,872 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 74 states have (on average 1.2837837837837838) internal successors, (95), 90 states have internal predecessors, (95), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:49,872 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 103 transitions. [2022-10-17 10:15:49,873 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 103 transitions. Word has length 36 [2022-10-17 10:15:49,874 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:49,874 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 103 transitions. [2022-10-17 10:15:49,875 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 2.7142857142857144) internal successors, (19), 6 states have internal predecessors, (19), 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 10:15:49,875 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 103 transitions. [2022-10-17 10:15:49,876 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:15:49,877 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:49,877 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:49,895 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (18)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:50,095 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:50,095 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:50,096 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:50,096 INFO L85 PathProgramCache]: Analyzing trace with hash 74876930, now seen corresponding path program 1 times [2022-10-17 10:15:50,096 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:50,096 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1214898184] [2022-10-17 10:15:50,097 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:50,097 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:50,097 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:50,098 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:50,138 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-10-17 10:15:50,363 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:50,380 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 16 conjunts are in the unsatisfiable core [2022-10-17 10:15:50,384 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:50,388 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 10:15:50,604 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:50,605 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:50,605 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:50,605 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1214898184] [2022-10-17 10:15:50,605 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1214898184] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:50,605 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:50,605 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [8] imperfect sequences [] total 8 [2022-10-17 10:15:50,608 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1101306114] [2022-10-17 10:15:50,608 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:50,608 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-10-17 10:15:50,609 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:50,609 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-10-17 10:15:50,609 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:50,610 INFO L87 Difference]: Start difference. First operand 98 states and 103 transitions. Second operand has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:51,008 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:51,009 INFO L93 Difference]: Finished difference Result 100 states and 106 transitions. [2022-10-17 10:15:51,009 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-10-17 10:15:51,010 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-17 10:15:51,010 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:51,011 INFO L225 Difference]: With dead ends: 100 [2022-10-17 10:15:51,011 INFO L226 Difference]: Without dead ends: 100 [2022-10-17 10:15:51,011 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 46 GetRequests, 35 SyntacticMatches, 1 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 5 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=42, Invalid=90, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:15:51,012 INFO L413 NwaCegarLoop]: 71 mSDtfsCounter, 65 mSDsluCounter, 276 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 65 SdHoareTripleChecker+Valid, 347 SdHoareTripleChecker+Invalid, 185 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 20 IncrementalHoareTripleChecker+Unchecked, 0.3s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:51,013 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [65 Valid, 347 Invalid, 185 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 164 Invalid, 0 Unknown, 20 Unchecked, 0.3s Time] [2022-10-17 10:15:51,013 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 100 states. [2022-10-17 10:15:51,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 100 to 96. [2022-10-17 10:15:51,017 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 96 states, 74 states have (on average 1.2567567567567568) internal successors, (93), 88 states have internal predecessors, (93), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:51,018 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 96 states to 96 states and 101 transitions. [2022-10-17 10:15:51,018 INFO L78 Accepts]: Start accepts. Automaton has 96 states and 101 transitions. Word has length 44 [2022-10-17 10:15:51,018 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:51,018 INFO L495 AbstractCegarLoop]: Abstraction has 96 states and 101 transitions. [2022-10-17 10:15:51,019 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 3.125) internal successors, (25), 8 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:51,019 INFO L276 IsEmpty]: Start isEmpty. Operand 96 states and 101 transitions. [2022-10-17 10:15:51,019 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 45 [2022-10-17 10:15:51,019 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:51,019 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:51,044 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (19)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:51,236 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,236 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:51,236 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:51,237 INFO L85 PathProgramCache]: Analyzing trace with hash 74876931, now seen corresponding path program 1 times [2022-10-17 10:15:51,237 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:51,237 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [23407367] [2022-10-17 10:15:51,237 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:51,237 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:51,237 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:51,238 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:51,252 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-10-17 10:15:51,554 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:51,571 INFO L263 TraceCheckSpWp]: Trace formula consists of 326 conjuncts, 31 conjunts are in the unsatisfiable core [2022-10-17 10:15:51,575 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:51,593 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 10:15:51,970 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:51,970 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:51,970 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:51,970 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [23407367] [2022-10-17 10:15:51,970 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [23407367] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:51,971 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:51,971 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [9] imperfect sequences [] total 9 [2022-10-17 10:15:51,971 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [205782461] [2022-10-17 10:15:51,971 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:51,971 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:15:51,972 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:51,972 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:15:51,972 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:51,972 INFO L87 Difference]: Start difference. First operand 96 states and 101 transitions. Second operand has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:52,487 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:52,488 INFO L93 Difference]: Finished difference Result 103 states and 109 transitions. [2022-10-17 10:15:52,488 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:15:52,489 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 44 [2022-10-17 10:15:52,489 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:52,490 INFO L225 Difference]: With dead ends: 103 [2022-10-17 10:15:52,490 INFO L226 Difference]: Without dead ends: 103 [2022-10-17 10:15:52,490 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 47 GetRequests, 34 SyntacticMatches, 1 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 11 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=47, Invalid=135, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:15:52,491 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 70 mSDsluCounter, 398 mSDsCounter, 0 mSdLazyCounter, 173 mSolverCounterSat, 15 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 70 SdHoareTripleChecker+Valid, 473 SdHoareTripleChecker+Invalid, 205 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 15 IncrementalHoareTripleChecker+Valid, 173 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:52,491 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [70 Valid, 473 Invalid, 205 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [15 Valid, 173 Invalid, 0 Unknown, 17 Unchecked, 0.4s Time] [2022-10-17 10:15:52,492 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 103 states. [2022-10-17 10:15:52,494 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 103 to 94. [2022-10-17 10:15:52,494 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2297297297297298) internal successors, (91), 86 states have internal predecessors, (91), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:52,495 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 99 transitions. [2022-10-17 10:15:52,495 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 99 transitions. Word has length 44 [2022-10-17 10:15:52,496 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:52,496 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 99 transitions. [2022-10-17 10:15:52,496 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 2.7777777777777777) internal successors, (25), 9 states have internal predecessors, (25), 2 states have call successors, (2), 2 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:52,496 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 99 transitions. [2022-10-17 10:15:52,496 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-10-17 10:15:52,496 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:52,497 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:52,516 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (20)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:52,707 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:52,708 INFO L420 AbstractCegarLoop]: === Iteration 20 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:52,708 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:52,708 INFO L85 PathProgramCache]: Analyzing trace with hash 496438540, now seen corresponding path program 1 times [2022-10-17 10:15:52,708 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:52,708 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1111136523] [2022-10-17 10:15:52,709 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:52,709 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:52,709 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:52,710 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:52,724 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-10-17 10:15:53,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:53,027 INFO L263 TraceCheckSpWp]: Trace formula consists of 361 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:15:53,030 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:53,136 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:53,136 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:53,136 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:53,137 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1111136523] [2022-10-17 10:15:53,137 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1111136523] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:53,137 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:53,137 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-10-17 10:15:53,137 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [709191416] [2022-10-17 10:15:53,137 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:53,138 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2022-10-17 10:15:53,138 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:53,138 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2022-10-17 10:15:53,138 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2022-10-17 10:15:53,139 INFO L87 Difference]: Start difference. First operand 94 states and 99 transitions. Second operand has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:53,214 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:53,214 INFO L93 Difference]: Finished difference Result 94 states and 98 transitions. [2022-10-17 10:15:53,215 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-10-17 10:15:53,215 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 50 [2022-10-17 10:15:53,216 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:53,216 INFO L225 Difference]: With dead ends: 94 [2022-10-17 10:15:53,216 INFO L226 Difference]: Without dead ends: 94 [2022-10-17 10:15:53,217 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 51 GetRequests, 44 SyntacticMatches, 0 SemanticMatches, 7 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=21, Invalid=51, Unknown=0, NotChecked=0, Total=72 [2022-10-17 10:15:53,218 INFO L413 NwaCegarLoop]: 75 mSDtfsCounter, 42 mSDsluCounter, 319 mSDsCounter, 0 mSdLazyCounter, 32 mSolverCounterSat, 6 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 394 SdHoareTripleChecker+Invalid, 38 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 6 IncrementalHoareTripleChecker+Valid, 32 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:53,218 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 394 Invalid, 38 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [6 Valid, 32 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-10-17 10:15:53,219 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 94 states. [2022-10-17 10:15:53,221 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 94 to 94. [2022-10-17 10:15:53,222 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 94 states, 74 states have (on average 1.2162162162162162) internal successors, (90), 86 states have internal predecessors, (90), 4 states have call successors, (4), 3 states have call predecessors, (4), 3 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:15:53,223 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 94 states to 94 states and 98 transitions. [2022-10-17 10:15:53,223 INFO L78 Accepts]: Start accepts. Automaton has 94 states and 98 transitions. Word has length 50 [2022-10-17 10:15:53,223 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:53,223 INFO L495 AbstractCegarLoop]: Abstraction has 94 states and 98 transitions. [2022-10-17 10:15:53,223 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 4.285714285714286) internal successors, (30), 6 states have internal predecessors, (30), 3 states have call successors, (3), 2 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:53,223 INFO L276 IsEmpty]: Start isEmpty. Operand 94 states and 98 transitions. [2022-10-17 10:15:53,224 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 10:15:53,224 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:53,224 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:53,240 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (21)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:53,440 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 21 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:53,440 INFO L420 AbstractCegarLoop]: === Iteration 21 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:53,441 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:53,441 INFO L85 PathProgramCache]: Analyzing trace with hash -774905870, now seen corresponding path program 1 times [2022-10-17 10:15:53,441 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:53,442 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1035085623] [2022-10-17 10:15:53,442 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:53,442 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:53,442 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:53,444 INFO L229 MonitoredProcess]: Starting monitored process 22 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:53,480 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (22)] Waiting until timeout for monitored process [2022-10-17 10:15:53,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:53,825 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 20 conjunts are in the unsatisfiable core [2022-10-17 10:15:53,827 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:53,832 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 10:15:54,085 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:54,085 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:54,085 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:54,085 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1035085623] [2022-10-17 10:15:54,086 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1035085623] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:54,086 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:54,086 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [11] imperfect sequences [] total 11 [2022-10-17 10:15:54,086 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1992770410] [2022-10-17 10:15:54,086 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:54,086 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-10-17 10:15:54,086 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:54,087 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-10-17 10:15:54,087 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=30, Invalid=102, Unknown=0, NotChecked=0, Total=132 [2022-10-17 10:15:54,087 INFO L87 Difference]: Start difference. First operand 94 states and 98 transitions. Second operand has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:54,664 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:54,664 INFO L93 Difference]: Finished difference Result 123 states and 129 transitions. [2022-10-17 10:15:54,665 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:54,665 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-10-17 10:15:54,665 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:54,666 INFO L225 Difference]: With dead ends: 123 [2022-10-17 10:15:54,666 INFO L226 Difference]: Without dead ends: 123 [2022-10-17 10:15:54,667 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 60 GetRequests, 44 SyntacticMatches, 1 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 14 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=209, Unknown=0, NotChecked=0, Total=272 [2022-10-17 10:15:54,668 INFO L413 NwaCegarLoop]: 57 mSDtfsCounter, 138 mSDsluCounter, 288 mSDsCounter, 0 mSdLazyCounter, 208 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 138 SdHoareTripleChecker+Valid, 345 SdHoareTripleChecker+Invalid, 228 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 208 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 17 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:54,668 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [138 Valid, 345 Invalid, 228 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 208 Invalid, 0 Unknown, 17 Unchecked, 0.5s Time] [2022-10-17 10:15:54,669 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 123 states. [2022-10-17 10:15:54,672 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 123 to 109. [2022-10-17 10:15:54,673 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 109 states, 88 states have (on average 1.2159090909090908) internal successors, (107), 100 states have internal predecessors, (107), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:15:54,674 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 109 states to 109 states and 117 transitions. [2022-10-17 10:15:54,674 INFO L78 Accepts]: Start accepts. Automaton has 109 states and 117 transitions. Word has length 56 [2022-10-17 10:15:54,674 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:54,674 INFO L495 AbstractCegarLoop]: Abstraction has 109 states and 117 transitions. [2022-10-17 10:15:54,674 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 3.6) internal successors, (36), 10 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:54,675 INFO L276 IsEmpty]: Start isEmpty. Operand 109 states and 117 transitions. [2022-10-17 10:15:54,675 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-10-17 10:15:54,676 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:54,676 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:54,712 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (22)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:54,876 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 22 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:54,877 INFO L420 AbstractCegarLoop]: === Iteration 22 === Targeting ldv_kobject_putErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:54,877 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:54,877 INFO L85 PathProgramCache]: Analyzing trace with hash -774905869, now seen corresponding path program 1 times [2022-10-17 10:15:54,878 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:54,878 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2026609613] [2022-10-17 10:15:54,878 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:54,878 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:54,878 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:54,879 INFO L229 MonitoredProcess]: Starting monitored process 23 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:54,880 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (23)] Waiting until timeout for monitored process [2022-10-17 10:15:55,256 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:55,277 INFO L263 TraceCheckSpWp]: Trace formula consists of 401 conjuncts, 35 conjunts are in the unsatisfiable core [2022-10-17 10:15:55,281 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:55,292 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 10:15:55,763 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:55,763 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:55,763 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:55,764 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2026609613] [2022-10-17 10:15:55,764 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2026609613] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:55,764 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:55,764 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:15:55,764 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2017503227] [2022-10-17 10:15:55,764 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:55,765 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:15:55,765 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:55,765 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:15:55,766 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=31, Invalid=125, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:15:55,766 INFO L87 Difference]: Start difference. First operand 109 states and 117 transitions. Second operand has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:56,332 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:56,332 INFO L93 Difference]: Finished difference Result 111 states and 117 transitions. [2022-10-17 10:15:56,335 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-10-17 10:15:56,335 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 56 [2022-10-17 10:15:56,335 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:56,336 INFO L225 Difference]: With dead ends: 111 [2022-10-17 10:15:56,336 INFO L226 Difference]: Without dead ends: 111 [2022-10-17 10:15:56,337 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 61 GetRequests, 43 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 25 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=68, Invalid=274, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:15:56,337 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 150 mSDsluCounter, 376 mSDsCounter, 0 mSdLazyCounter, 235 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.3s Time, 0 mProtectedPredicate, 0 mProtectedAction, 150 SdHoareTripleChecker+Valid, 431 SdHoareTripleChecker+Invalid, 253 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 235 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 8 IncrementalHoareTripleChecker+Unchecked, 0.4s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:56,337 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [150 Valid, 431 Invalid, 253 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 235 Invalid, 0 Unknown, 8 Unchecked, 0.4s Time] [2022-10-17 10:15:56,338 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-10-17 10:15:56,341 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 107. [2022-10-17 10:15:56,341 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1704545454545454) internal successors, (103), 98 states have internal predecessors, (103), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:15:56,342 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 113 transitions. [2022-10-17 10:15:56,342 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 113 transitions. Word has length 56 [2022-10-17 10:15:56,342 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:56,343 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 113 transitions. [2022-10-17 10:15:56,343 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.272727272727273) internal successors, (36), 11 states have internal predecessors, (36), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:56,343 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 113 transitions. [2022-10-17 10:15:56,343 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 10:15:56,343 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:56,344 INFO L195 NwaCegarLoop]: trace histogram [16, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:56,359 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (23)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:56,544 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 23 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:56,544 INFO L420 AbstractCegarLoop]: === Iteration 23 === Targeting ldv_kobject_putErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:56,544 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:56,545 INFO L85 PathProgramCache]: Analyzing trace with hash -178952659, now seen corresponding path program 1 times [2022-10-17 10:15:56,545 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:56,545 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1350380332] [2022-10-17 10:15:56,545 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:56,545 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:56,545 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:56,546 INFO L229 MonitoredProcess]: Starting monitored process 24 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:56,547 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (24)] Waiting until timeout for monitored process [2022-10-17 10:15:56,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:56,837 INFO L263 TraceCheckSpWp]: Trace formula consists of 418 conjuncts, 10 conjunts are in the unsatisfiable core [2022-10-17 10:15:56,840 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:57,010 INFO L134 CoverageAnalysis]: Checked inductivity of 138 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:57,010 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:57,010 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:57,010 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1350380332] [2022-10-17 10:15:57,010 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1350380332] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:57,010 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:57,010 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [10] imperfect sequences [] total 10 [2022-10-17 10:15:57,011 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [822237006] [2022-10-17 10:15:57,011 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:57,011 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-10-17 10:15:57,011 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:57,012 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-10-17 10:15:57,012 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=17, Invalid=73, Unknown=0, NotChecked=0, Total=90 [2022-10-17 10:15:57,012 INFO L87 Difference]: Start difference. First operand 107 states and 113 transitions. Second operand has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:15:57,189 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:57,189 INFO L93 Difference]: Finished difference Result 111 states and 115 transitions. [2022-10-17 10:15:57,190 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2022-10-17 10:15:57,190 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) Word has length 62 [2022-10-17 10:15:57,191 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:57,192 INFO L225 Difference]: With dead ends: 111 [2022-10-17 10:15:57,192 INFO L226 Difference]: Without dead ends: 107 [2022-10-17 10:15:57,192 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 65 GetRequests, 53 SyntacticMatches, 0 SemanticMatches, 12 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=39, Invalid=143, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:15:57,193 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 71 mSDsluCounter, 445 mSDsCounter, 0 mSdLazyCounter, 89 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 514 SdHoareTripleChecker+Invalid, 98 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 89 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:57,193 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 514 Invalid, 98 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 89 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-10-17 10:15:57,194 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-10-17 10:15:57,213 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 107. [2022-10-17 10:15:57,214 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 88 states have (on average 1.1477272727272727) internal successors, (101), 98 states have internal predecessors, (101), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:15:57,214 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 111 transitions. [2022-10-17 10:15:57,215 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 111 transitions. Word has length 62 [2022-10-17 10:15:57,215 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:57,215 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 111 transitions. [2022-10-17 10:15:57,215 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 9 states have (on average 4.444444444444445) internal successors, (40), 9 states have internal predecessors, (40), 4 states have call successors, (4), 2 states have call predecessors, (4), 3 states have return successors, (3), 3 states have call predecessors, (3), 3 states have call successors, (3) [2022-10-17 10:15:57,216 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 111 transitions. [2022-10-17 10:15:57,216 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 10:15:57,216 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:57,217 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:57,235 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (24)] Forceful destruction successful, exit code 0 [2022-10-17 10:15:57,432 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 24 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:57,432 INFO L420 AbstractCegarLoop]: === Iteration 24 === Targeting ldv_kobject_putErr4REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:57,433 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:57,433 INFO L85 PathProgramCache]: Analyzing trace with hash 59491574, now seen corresponding path program 1 times [2022-10-17 10:15:57,434 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:57,434 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1967818518] [2022-10-17 10:15:57,434 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:57,434 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:57,434 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:57,435 INFO L229 MonitoredProcess]: Starting monitored process 25 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:57,444 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (25)] Waiting until timeout for monitored process [2022-10-17 10:15:57,816 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:57,836 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 26 conjunts are in the unsatisfiable core [2022-10-17 10:15:57,839 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:57,844 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 10:15:58,131 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:15:58,132 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:15:58,132 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:15:58,132 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1967818518] [2022-10-17 10:15:58,132 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1967818518] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:15:58,132 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:15:58,132 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [12] imperfect sequences [] total 12 [2022-10-17 10:15:58,133 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2064407911] [2022-10-17 10:15:58,133 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:15:58,133 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 13 states [2022-10-17 10:15:58,133 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:15:58,134 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 13 interpolants. [2022-10-17 10:15:58,134 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=123, Unknown=0, NotChecked=0, Total=156 [2022-10-17 10:15:58,134 INFO L87 Difference]: Start difference. First operand 107 states and 111 transitions. Second operand has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:58,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:15:58,872 INFO L93 Difference]: Finished difference Result 116 states and 122 transitions. [2022-10-17 10:15:58,879 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2022-10-17 10:15:58,880 INFO L78 Accepts]: Start accepts. Automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-10-17 10:15:58,880 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:15:58,881 INFO L225 Difference]: With dead ends: 116 [2022-10-17 10:15:58,881 INFO L226 Difference]: Without dead ends: 116 [2022-10-17 10:15:58,882 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 67 GetRequests, 49 SyntacticMatches, 1 SemanticMatches, 17 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=75, Invalid=267, Unknown=0, NotChecked=0, Total=342 [2022-10-17 10:15:58,882 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 98 mSDsluCounter, 412 mSDsCounter, 0 mSdLazyCounter, 330 mSolverCounterSat, 4 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 98 SdHoareTripleChecker+Valid, 465 SdHoareTripleChecker+Invalid, 352 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 4 IncrementalHoareTripleChecker+Valid, 330 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 18 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:15:58,883 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [98 Valid, 465 Invalid, 352 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [4 Valid, 330 Invalid, 0 Unknown, 18 Unchecked, 0.6s Time] [2022-10-17 10:15:58,884 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-10-17 10:15:58,887 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 107. [2022-10-17 10:15:58,887 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 107 states, 89 states have (on average 1.146067415730337) internal successors, (102), 98 states have internal predecessors, (102), 4 states have call successors, (4), 4 states have call predecessors, (4), 5 states have return successors, (6), 4 states have call predecessors, (6), 4 states have call successors, (6) [2022-10-17 10:15:58,888 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 107 states to 107 states and 112 transitions. [2022-10-17 10:15:58,888 INFO L78 Accepts]: Start accepts. Automaton has 107 states and 112 transitions. Word has length 62 [2022-10-17 10:15:58,889 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:15:58,889 INFO L495 AbstractCegarLoop]: Abstraction has 107 states and 112 transitions. [2022-10-17 10:15:58,889 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 13 states, 11 states have (on average 3.8181818181818183) internal successors, (42), 11 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:15:58,889 INFO L276 IsEmpty]: Start isEmpty. Operand 107 states and 112 transitions. [2022-10-17 10:15:58,890 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 63 [2022-10-17 10:15:58,890 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:15:58,890 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:15:58,906 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (25)] Ended with exit code 0 [2022-10-17 10:15:59,106 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 25 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:15:59,106 INFO L420 AbstractCegarLoop]: === Iteration 25 === Targeting ldv_kobject_putErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:15:59,107 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:15:59,107 INFO L85 PathProgramCache]: Analyzing trace with hash 59491575, now seen corresponding path program 1 times [2022-10-17 10:15:59,107 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:15:59,107 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [669015748] [2022-10-17 10:15:59,107 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:15:59,107 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:15:59,108 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:15:59,108 INFO L229 MonitoredProcess]: Starting monitored process 26 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:15:59,109 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (26)] Waiting until timeout for monitored process [2022-10-17 10:15:59,533 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-10-17 10:15:59,558 INFO L263 TraceCheckSpWp]: Trace formula consists of 450 conjuncts, 47 conjunts are in the unsatisfiable core [2022-10-17 10:15:59,562 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-10-17 10:15:59,576 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 10:16:00,184 INFO L134 CoverageAnalysis]: Checked inductivity of 136 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 136 trivial. 0 not checked. [2022-10-17 10:16:00,185 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-10-17 10:16:00,185 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-10-17 10:16:00,185 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [669015748] [2022-10-17 10:16:00,185 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [669015748] provided 1 perfect and 0 imperfect interpolant sequences [2022-10-17 10:16:00,185 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-10-17 10:16:00,185 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [13] imperfect sequences [] total 13 [2022-10-17 10:16:00,185 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1859237818] [2022-10-17 10:16:00,186 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-10-17 10:16:00,186 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 14 states [2022-10-17 10:16:00,186 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-10-17 10:16:00,186 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 14 interpolants. [2022-10-17 10:16:00,187 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=34, Invalid=148, Unknown=0, NotChecked=0, Total=182 [2022-10-17 10:16:00,187 INFO L87 Difference]: Start difference. First operand 107 states and 112 transitions. Second operand has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:01,035 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-10-17 10:16:01,036 INFO L93 Difference]: Finished difference Result 126 states and 130 transitions. [2022-10-17 10:16:01,036 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2022-10-17 10:16:01,037 INFO L78 Accepts]: Start accepts. Automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 62 [2022-10-17 10:16:01,037 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-10-17 10:16:01,038 INFO L225 Difference]: With dead ends: 126 [2022-10-17 10:16:01,038 INFO L226 Difference]: Without dead ends: 126 [2022-10-17 10:16:01,039 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 68 GetRequests, 48 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 31 ImplicationChecksByTransitivity, 0.5s TimeCoverageRelationStatistics Valid=80, Invalid=340, Unknown=0, NotChecked=0, Total=420 [2022-10-17 10:16:01,040 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 166 mSDsluCounter, 418 mSDsCounter, 0 mSdLazyCounter, 249 mSolverCounterSat, 9 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 166 SdHoareTripleChecker+Valid, 472 SdHoareTripleChecker+Invalid, 271 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 9 IncrementalHoareTripleChecker+Valid, 249 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 13 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2022-10-17 10:16:01,040 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [166 Valid, 472 Invalid, 271 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [9 Valid, 249 Invalid, 0 Unknown, 13 Unchecked, 0.6s Time] [2022-10-17 10:16:01,041 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-10-17 10:16:01,044 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 114. [2022-10-17 10:16:01,044 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 114 states, 97 states have (on average 1.175257731958763) internal successors, (114), 105 states have internal predecessors, (114), 4 states have call successors, (4), 4 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-10-17 10:16:01,045 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 114 states to 114 states and 122 transitions. [2022-10-17 10:16:01,046 INFO L78 Accepts]: Start accepts. Automaton has 114 states and 122 transitions. Word has length 62 [2022-10-17 10:16:01,046 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-10-17 10:16:01,046 INFO L495 AbstractCegarLoop]: Abstraction has 114 states and 122 transitions. [2022-10-17 10:16:01,046 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 14 states, 12 states have (on average 3.5) internal successors, (42), 12 states have internal predecessors, (42), 3 states have call successors, (3), 3 states have call predecessors, (3), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-10-17 10:16:01,047 INFO L276 IsEmpty]: Start isEmpty. Operand 114 states and 122 transitions. [2022-10-17 10:16:01,047 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 66 [2022-10-17 10:16:01,048 INFO L187 NwaCegarLoop]: Found error trace [2022-10-17 10:16:01,048 INFO L195 NwaCegarLoop]: trace histogram [16, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-10-17 10:16:01,066 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (26)] Forceful destruction successful, exit code 0 [2022-10-17 10:16:01,264 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 26 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 [2022-10-17 10:16:01,264 INFO L420 AbstractCegarLoop]: === Iteration 26 === Targeting ldv_kobject_putErr7ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1ASSERT_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 22 more)] === [2022-10-17 10:16:01,265 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-10-17 10:16:01,265 INFO L85 PathProgramCache]: Analyzing trace with hash -1507930724, now seen corresponding path program 1 times [2022-10-17 10:16:01,266 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-10-17 10:16:01,266 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1162012220] [2022-10-17 10:16:01,266 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-10-17 10:16:01,266 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -unsat_core_generation=3 [2022-10-17 10:16:01,267 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat [2022-10-17 10:16:01,267 INFO L229 MonitoredProcess]: Starting monitored process 27 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-10-17 10:16:01,268 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_2a9ddbd0-caeb-4d57-b83a-9073a21a72f9/bin/uautomizer-J5u9QxTXDZ/mathsat -unsat_core_generation=3 (27)] Waiting until timeout for monitored process