./Ultimate.py --spec ../../sv-benchmarks/c/properties/valid-memsafety.prp --file ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for memory safety (deref-memtrack) Using default analysis Version 2329fc70 Calling Ultimate with: /usr/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8 --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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- 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-2329fc7 [2022-12-13 22:03:43,869 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:03:43,871 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:03:43,889 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:03:43,889 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:03:43,890 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:03:43,891 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:03:43,893 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:03:43,894 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:03:43,895 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:03:43,896 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:03:43,897 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:03:43,897 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:03:43,898 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:03:43,899 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:03:43,900 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:03:43,901 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:03:43,902 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:03:43,903 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:03:43,904 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:03:43,904 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:03:43,906 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:03:43,907 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:03:43,907 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:03:43,911 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:03:43,911 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:03:43,911 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:03:43,912 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:03:43,913 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:03:43,913 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:03:43,914 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:03:43,914 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:03:43,915 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:03:43,916 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:03:43,916 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:03:43,917 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:03:43,917 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:03:43,917 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:03:43,918 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:03:43,918 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:03:43,919 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:03:43,920 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Default.epf [2022-12-13 22:03:43,940 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:03:43,940 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:03:43,940 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:03:43,940 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:03:43,941 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:03:43,941 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:03:43,942 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:03:43,942 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:03:43,942 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:03:43,942 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:03:43,943 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:03:43,944 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:03:43,944 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:03:43,945 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:03:43,945 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:03:43,945 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:03:43,945 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:03:43,945 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:03:43,945 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:03:43,946 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2022-12-13 22:03:44,124 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:03:44,143 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:03:44,145 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:03:44,146 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:03:44,146 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:03:44,147 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-12-13 22:03:46,740 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:03:46,923 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:03:46,924 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-12-13 22:03:46,934 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/50d58ff81/6e8793ae63ee4e5c8a3825c411be98b4/FLAG61da2856e [2022-12-13 22:03:46,945 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/50d58ff81/6e8793ae63ee4e5c8a3825c411be98b4 [2022-12-13 22:03:46,946 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:03:46,947 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:03:46,948 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:46,948 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:03:46,951 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:03:46,951 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:46" (1/1) ... [2022-12-13 22:03:46,952 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@2e78d49 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:46, skipping insertion in model container [2022-12-13 22:03:46,952 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:46" (1/1) ... [2022-12-13 22:03:46,958 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:03:46,987 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:03:47,227 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:47,241 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) [2022-12-13 22:03:47,241 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.CACSL2BoogieTranslatorObserver@4801ae2e and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:47, skipping insertion in model container [2022-12-13 22:03:47,241 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:47,242 INFO L184 ToolchainWalker]: Toolchain execution was canceled (user or tool) before executing de.uni_freiburg.informatik.ultimate.boogie.procedureinliner [2022-12-13 22:03:47,243 INFO L158 Benchmark]: Toolchain (without parser) took 294.88ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 92.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 22:03:47,243 INFO L158 Benchmark]: CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. [2022-12-13 22:03:47,243 INFO L158 Benchmark]: CACSL2BoogieTranslator took 293.28ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 92.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. Max. memory is 16.1GB. [2022-12-13 22:03:47,244 INFO L339 ainManager$Toolchain]: ####################### End [Toolchain 1] ####################### --- Results --- * Results from de.uni_freiburg.informatik.ultimate.core: - StatisticsResult: Toolchain Benchmarks Benchmark results are: * CDTParser took 0.12ms. Allocated memory is still 142.6MB. Free memory is still 113.2MB. There was no memory consumed. Max. memory is 16.1GB. * CACSL2BoogieTranslator took 293.28ms. Allocated memory is still 142.6MB. Free memory was 106.3MB in the beginning and 92.7MB in the end (delta: 13.6MB). Peak memory consumption was 14.7MB. 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/lib/jvm/java-11-openjdk-amd64/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/AutomizerMemDerefMemtrack.xml -i ../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8 --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 b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b --- 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-2329fc7 [2022-12-13 22:03:48,672 INFO L177 SettingsManager]: Resetting all preferences to default values... [2022-12-13 22:03:48,673 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2022-12-13 22:03:48,693 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2022-12-13 22:03:48,693 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2022-12-13 22:03:48,694 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2022-12-13 22:03:48,696 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2022-12-13 22:03:48,697 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2022-12-13 22:03:48,699 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2022-12-13 22:03:48,700 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2022-12-13 22:03:48,701 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2022-12-13 22:03:48,702 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2022-12-13 22:03:48,703 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2022-12-13 22:03:48,704 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2022-12-13 22:03:48,705 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2022-12-13 22:03:48,706 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2022-12-13 22:03:48,707 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2022-12-13 22:03:48,708 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2022-12-13 22:03:48,709 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2022-12-13 22:03:48,711 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2022-12-13 22:03:48,712 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2022-12-13 22:03:48,714 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2022-12-13 22:03:48,715 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2022-12-13 22:03:48,716 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2022-12-13 22:03:48,720 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2022-12-13 22:03:48,720 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2022-12-13 22:03:48,720 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2022-12-13 22:03:48,721 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2022-12-13 22:03:48,722 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2022-12-13 22:03:48,723 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2022-12-13 22:03:48,723 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2022-12-13 22:03:48,723 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2022-12-13 22:03:48,733 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2022-12-13 22:03:48,734 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2022-12-13 22:03:48,735 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2022-12-13 22:03:48,735 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2022-12-13 22:03:48,735 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2022-12-13 22:03:48,736 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2022-12-13 22:03:48,736 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2022-12-13 22:03:48,737 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2022-12-13 22:03:48,737 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2022-12-13 22:03:48,738 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/config/svcomp-DerefFreeMemtrack-32bit-Automizer_Bitvector.epf [2022-12-13 22:03:48,760 INFO L113 SettingsManager]: Loading preferences was successful [2022-12-13 22:03:48,761 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2022-12-13 22:03:48,761 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2022-12-13 22:03:48,761 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2022-12-13 22:03:48,762 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2022-12-13 22:03:48,762 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2022-12-13 22:03:48,762 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2022-12-13 22:03:48,762 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2022-12-13 22:03:48,762 INFO L138 SettingsManager]: * Use SBE=true [2022-12-13 22:03:48,763 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * sizeof long=4 [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * Check unreachability of error function in SV-COMP mode=false [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * sizeof POINTER=4 [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2022-12-13 22:03:48,763 INFO L138 SettingsManager]: * Check for the main procedure if all allocated memory was freed=true [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * Bitprecise bitfields=true [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * SV-COMP memtrack compatibility mode=true [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * Adapt memory model on pointer casts if necessary=true [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * Use bitvectors instead of ints=true [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * Memory model=HoenickeLindenmann_4ByteResolution [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * sizeof long double=12 [2022-12-13 22:03:48,764 INFO L138 SettingsManager]: * Use constant arrays=true [2022-12-13 22:03:48,764 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:03:48,765 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * Trace refinement strategy=WOLF [2022-12-13 22:03:48,765 INFO L138 SettingsManager]: * Command for external solver=cvc4 --incremental --print-success --lang smt [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * Order on configurations for Petri net unfoldings=DBO [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * Logic for external solver=AUFBV [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * Independence relation used for large block encoding in concurrent analysis=SYNTACTIC [2022-12-13 22:03:48,766 INFO L138 SettingsManager]: * Looper check in Petri net analysis=SEMANTIC 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_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/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$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8 Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G valid-free) ) CHECK( init(main()), LTL(G valid-deref) ) CHECK( init(main()), LTL(G valid-memtrack) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> b6787eb3a37902efa71d2cd0d9e143f31d9492f6d095b3afd518dba74579db5b [2022-12-13 22:03:49,016 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2022-12-13 22:03:49,031 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2022-12-13 22:03:49,033 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2022-12-13 22:03:49,034 INFO L271 PluginConnector]: Initializing CDTParser... [2022-12-13 22:03:49,034 INFO L275 PluginConnector]: CDTParser initialized [2022-12-13 22:03:49,035 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/../../sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-12-13 22:03:51,560 INFO L500 CDTParser]: Created temporary CDT project at NULL [2022-12-13 22:03:51,727 INFO L351 CDTParser]: Found 1 translation units. [2022-12-13 22:03:51,727 INFO L172 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/sv-benchmarks/c/ldv-memsafety/memleaks_test17_1-1.i [2022-12-13 22:03:51,736 INFO L394 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/842aea40d/54d7c9946e7743d6aa96c4a88a5b1c0b/FLAGf0f54cd2b [2022-12-13 22:03:52,126 INFO L402 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/data/842aea40d/54d7c9946e7743d6aa96c4a88a5b1c0b [2022-12-13 22:03:52,131 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2022-12-13 22:03:52,133 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2022-12-13 22:03:52,134 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:52,134 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2022-12-13 22:03:52,137 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2022-12-13 22:03:52,138 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,139 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@60d64349 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52, skipping insertion in model container [2022-12-13 22:03:52,139 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,145 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2022-12-13 22:03:52,183 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:03:52,481 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:52,498 INFO L200 MainTranslator]: Restarting translation with changed settings: SettingsChange [mNewPreferredMemoryModel=HoenickeLindenmann_1ByteResolution] [2022-12-13 22:03:52,507 INFO L178 MainTranslator]: Built tables and reachable declarations [2022-12-13 22:03:52,561 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:52,568 INFO L203 MainTranslator]: Completed pre-run [2022-12-13 22:03:52,615 INFO L210 PostProcessor]: Analyzing one entry point: main [2022-12-13 22:03:52,656 INFO L208 MainTranslator]: Completed translation [2022-12-13 22:03:52,656 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52 WrapperNode [2022-12-13 22:03:52,656 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2022-12-13 22:03:52,657 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2022-12-13 22:03:52,657 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2022-12-13 22:03:52,657 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2022-12-13 22:03:52,662 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,676 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,691 INFO L138 Inliner]: procedures = 167, calls = 78, calls flagged for inlining = 23, calls inlined = 5, statements flattened = 85 [2022-12-13 22:03:52,691 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2022-12-13 22:03:52,691 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2022-12-13 22:03:52,691 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2022-12-13 22:03:52,691 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2022-12-13 22:03:52,699 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,699 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,702 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,703 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,710 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,713 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,715 INFO L185 PluginConnector]: Executing the observer LTLStepAnnotator from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,716 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,719 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2022-12-13 22:03:52,720 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2022-12-13 22:03:52,720 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2022-12-13 22:03:52,720 INFO L275 PluginConnector]: RCFGBuilder initialized [2022-12-13 22:03:52,721 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (1/1) ... [2022-12-13 22:03:52,725 INFO L173 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2022-12-13 22:03:52,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/z3 [2022-12-13 22:03:52,745 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2022-12-13 22:03:52,747 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2022-12-13 22:03:52,779 INFO L130 BoogieDeclarations]: Found specification of procedure ldv_malloc [2022-12-13 22:03:52,780 INFO L138 BoogieDeclarations]: Found implementation of procedure ldv_malloc [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocOnHeap [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~$Pointer$ [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure read~$Pointer$ [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.dealloc [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~$Pointer$ [2022-12-13 22:03:52,780 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2022-12-13 22:03:52,781 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2022-12-13 22:03:52,892 INFO L235 CfgBuilder]: Building ICFG [2022-12-13 22:03:52,894 INFO L261 CfgBuilder]: Building CFG for each procedure with an implementation [2022-12-13 22:03:53,143 INFO L276 CfgBuilder]: Performing block encoding [2022-12-13 22:03:53,149 INFO L295 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2022-12-13 22:03:53,149 INFO L300 CfgBuilder]: Removed 4 assume(true) statements. [2022-12-13 22:03:53,151 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:03:53 BoogieIcfgContainer [2022-12-13 22:03:53,151 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2022-12-13 22:03:53,153 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2022-12-13 22:03:53,153 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2022-12-13 22:03:53,156 INFO L275 PluginConnector]: TraceAbstraction initialized [2022-12-13 22:03:53,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 13.12 10:03:52" (1/3) ... [2022-12-13 22:03:53,157 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b8209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:03:53, skipping insertion in model container [2022-12-13 22:03:53,157 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 13.12 10:03:52" (2/3) ... [2022-12-13 22:03:53,158 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@17b8209 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 13.12 10:03:53, skipping insertion in model container [2022-12-13 22:03:53,158 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 13.12 10:03:53" (3/3) ... [2022-12-13 22:03:53,159 INFO L112 eAbstractionObserver]: Analyzing ICFG memleaks_test17_1-1.i [2022-12-13 22:03:53,177 INFO L203 ceAbstractionStarter]: Automizer settings: Hoare:false NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2022-12-13 22:03:53,178 INFO L162 ceAbstractionStarter]: Applying trace abstraction to program that has 17 error locations. [2022-12-13 22:03:53,229 INFO L356 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2022-12-13 22:03:53,234 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=PETRI_NET, 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;@4c85d80, mLbeIndependenceSettings=[IndependenceType=SYNTACTIC, AbstractionType=NONE, UseConditional=, UseSemiCommutativity=, Solver=, SolverTimeout=] [2022-12-13 22:03:53,234 INFO L358 AbstractCegarLoop]: Starting to check reachability of 17 error locations. [2022-12-13 22:03:53,238 INFO L276 IsEmpty]: Start isEmpty. Operand has 58 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:03:53,244 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:03:53,245 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:53,245 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:53,246 INFO L420 AbstractCegarLoop]: === Iteration 1 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:53,250 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:53,250 INFO L85 PathProgramCache]: Analyzing trace with hash 67903625, now seen corresponding path program 1 times [2022-12-13 22:03:53,261 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:53,261 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1754999973] [2022-12-13 22:03:53,262 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:53,262 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:53,262 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:53,263 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:53,264 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Waiting until timeout for monitored process [2022-12-13 22:03:53,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:53,328 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:03:53,333 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:53,395 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:53,395 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:53,395 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:53,396 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1754999973] [2022-12-13 22:03:53,396 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1754999973] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:53,396 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:53,396 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:53,397 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1890997074] [2022-12-13 22:03:53,398 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:53,401 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:03:53,401 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:53,421 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:03:53,421 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:53,423 INFO L87 Difference]: Start difference. First operand has 58 states, 37 states have (on average 1.7567567567567568) internal successors, (65), 54 states have internal predecessors, (65), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 22:03:53,504 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:53,504 INFO L93 Difference]: Finished difference Result 111 states and 125 transitions. [2022-12-13 22:03:53,505 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:03:53,506 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 [2022-12-13 22:03:53,506 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:53,512 INFO L225 Difference]: With dead ends: 111 [2022-12-13 22:03:53,512 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 22:03:53,513 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:53,515 INFO L413 NwaCegarLoop]: 63 mSDtfsCounter, 53 mSDsluCounter, 176 mSDsCounter, 0 mSdLazyCounter, 35 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 55 SdHoareTripleChecker+Valid, 239 SdHoareTripleChecker+Invalid, 35 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 35 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:53,516 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [55 Valid, 239 Invalid, 35 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 35 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:03:53,528 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 22:03:53,541 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 60. [2022-12-13 22:03:53,542 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 60 states, 39 states have (on average 1.5897435897435896) internal successors, (62), 55 states have internal predecessors, (62), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 22:03:53,543 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 60 states to 60 states and 68 transitions. [2022-12-13 22:03:53,544 INFO L78 Accepts]: Start accepts. Automaton has 60 states and 68 transitions. Word has length 11 [2022-12-13 22:03:53,544 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:53,545 INFO L495 AbstractCegarLoop]: Abstraction has 60 states and 68 transitions. [2022-12-13 22:03:53,545 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 22:03:53,545 INFO L276 IsEmpty]: Start isEmpty. Operand 60 states and 68 transitions. [2022-12-13 22:03:53,546 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:03:53,546 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:53,546 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:53,560 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (2)] Forceful destruction successful, exit code 0 [2022-12-13 22:03:53,747 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:53,747 INFO L420 AbstractCegarLoop]: === Iteration 2 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:53,748 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:53,748 INFO L85 PathProgramCache]: Analyzing trace with hash 67902731, now seen corresponding path program 1 times [2022-12-13 22:03:53,749 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:53,749 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1374629890] [2022-12-13 22:03:53,749 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:53,749 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:53,749 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:53,751 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:53,752 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Waiting until timeout for monitored process [2022-12-13 22:03:53,880 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:53,882 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:03:53,884 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:53,917 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:03:53,950 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:53,950 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:53,950 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:53,951 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1374629890] [2022-12-13 22:03:53,951 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1374629890] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:53,951 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:53,951 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:03:53,951 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [979771047] [2022-12-13 22:03:53,951 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:53,952 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:03:53,953 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:53,953 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:03:53,953 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:53,954 INFO L87 Difference]: Start difference. First operand 60 states and 68 transitions. Second operand has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-12-13 22:03:54,083 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:54,083 INFO L93 Difference]: Finished difference Result 82 states and 94 transitions. [2022-12-13 22:03:54,084 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:03:54,084 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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 [2022-12-13 22:03:54,084 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:54,085 INFO L225 Difference]: With dead ends: 82 [2022-12-13 22:03:54,085 INFO L226 Difference]: Without dead ends: 82 [2022-12-13 22:03:54,085 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:54,086 INFO L413 NwaCegarLoop]: 55 mSDtfsCounter, 22 mSDsluCounter, 111 mSDsCounter, 0 mSdLazyCounter, 93 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 22 SdHoareTripleChecker+Valid, 166 SdHoareTripleChecker+Invalid, 94 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 93 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:54,087 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [22 Valid, 166 Invalid, 94 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 93 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:03:54,088 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 82 states. [2022-12-13 22:03:54,092 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 82 to 62. [2022-12-13 22:03:54,092 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 62 states, 41 states have (on average 1.6097560975609757) internal successors, (66), 57 states have internal predecessors, (66), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 22:03:54,093 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 62 states to 62 states and 72 transitions. [2022-12-13 22:03:54,093 INFO L78 Accepts]: Start accepts. Automaton has 62 states and 72 transitions. Word has length 11 [2022-12-13 22:03:54,094 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:54,094 INFO L495 AbstractCegarLoop]: Abstraction has 62 states and 72 transitions. [2022-12-13 22:03:54,094 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 4 states have (on average 2.25) internal successors, (9), 4 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) [2022-12-13 22:03:54,094 INFO L276 IsEmpty]: Start isEmpty. Operand 62 states and 72 transitions. [2022-12-13 22:03:54,094 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:03:54,094 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:54,095 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:54,105 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (3)] Ended with exit code 0 [2022-12-13 22:03:54,295 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:54,296 INFO L420 AbstractCegarLoop]: === Iteration 3 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:54,298 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:54,298 INFO L85 PathProgramCache]: Analyzing trace with hash 67902732, now seen corresponding path program 1 times [2022-12-13 22:03:54,299 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:54,300 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [960744836] [2022-12-13 22:03:54,300 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:54,300 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:54,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:54,304 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:54,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Waiting until timeout for monitored process [2022-12-13 22:03:54,414 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:54,416 INFO L263 TraceCheckSpWp]: Trace formula consists of 41 conjuncts, 12 conjunts are in the unsatisfiable core [2022-12-13 22:03:54,418 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:54,441 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:03:54,521 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:54,521 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:54,521 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:54,522 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [960744836] [2022-12-13 22:03:54,522 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [960744836] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:54,522 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:54,522 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2022-12-13 22:03:54,522 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [991308351] [2022-12-13 22:03:54,522 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:54,523 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:03:54,523 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:54,523 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:03:54,523 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:03:54,524 INFO L87 Difference]: Start difference. First operand 62 states and 72 transitions. Second operand has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2022-12-13 22:03:54,832 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:54,832 INFO L93 Difference]: Finished difference Result 89 states and 103 transitions. [2022-12-13 22:03:54,833 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:03:54,833 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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 [2022-12-13 22:03:54,833 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:54,834 INFO L225 Difference]: With dead ends: 89 [2022-12-13 22:03:54,834 INFO L226 Difference]: Without dead ends: 89 [2022-12-13 22:03:54,834 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 14 GetRequests, 4 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 7 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=32, Invalid=100, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:03:54,835 INFO L413 NwaCegarLoop]: 69 mSDtfsCounter, 89 mSDsluCounter, 272 mSDsCounter, 0 mSdLazyCounter, 164 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 93 SdHoareTripleChecker+Valid, 341 SdHoareTripleChecker+Invalid, 167 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 164 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:54,835 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [93 Valid, 341 Invalid, 167 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 164 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:03:54,836 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 89 states. [2022-12-13 22:03:54,839 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 89 to 64. [2022-12-13 22:03:54,839 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 64 states, 43 states have (on average 1.5813953488372092) internal successors, (68), 59 states have internal predecessors, (68), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (4), 3 states have call predecessors, (4), 2 states have call successors, (4) [2022-12-13 22:03:54,840 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 64 states to 64 states and 74 transitions. [2022-12-13 22:03:54,840 INFO L78 Accepts]: Start accepts. Automaton has 64 states and 74 transitions. Word has length 11 [2022-12-13 22:03:54,840 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:54,840 INFO L495 AbstractCegarLoop]: Abstraction has 64 states and 74 transitions. [2022-12-13 22:03:54,841 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 6 states have (on average 1.5) internal successors, (9), 7 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) [2022-12-13 22:03:54,841 INFO L276 IsEmpty]: Start isEmpty. Operand 64 states and 74 transitions. [2022-12-13 22:03:54,841 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:03:54,841 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:54,841 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:54,852 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (4)] Ended with exit code 0 [2022-12-13 22:03:55,042 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 4 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,043 INFO L420 AbstractCegarLoop]: === Iteration 4 === Targeting ULTIMATE.startErr16ASSERT_VIOLATIONMEMORY_LEAK === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:55,043 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:55,044 INFO L85 PathProgramCache]: Analyzing trace with hash 955407306, now seen corresponding path program 1 times [2022-12-13 22:03:55,044 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:55,044 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [752982826] [2022-12-13 22:03:55,045 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:55,045 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,045 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:55,047 INFO L229 MonitoredProcess]: Starting monitored process 5 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:55,048 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Waiting until timeout for monitored process [2022-12-13 22:03:55,156 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:55,160 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:03:55,165 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:55,228 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:55,229 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:55,229 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:55,229 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [752982826] [2022-12-13 22:03:55,230 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [752982826] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:55,230 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:55,230 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [3] imperfect sequences [] total 3 [2022-12-13 22:03:55,230 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [2050894742] [2022-12-13 22:03:55,231 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:55,231 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:03:55,231 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:55,232 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:03:55,232 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:03:55,233 INFO L87 Difference]: Start difference. First operand 64 states and 74 transitions. Second operand has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-13 22:03:55,320 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:55,320 INFO L93 Difference]: Finished difference Result 104 states and 120 transitions. [2022-12-13 22:03:55,321 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:03:55,321 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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 [2022-12-13 22:03:55,321 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:55,322 INFO L225 Difference]: With dead ends: 104 [2022-12-13 22:03:55,322 INFO L226 Difference]: Without dead ends: 101 [2022-12-13 22:03:55,322 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 8 SyntacticMatches, 0 SemanticMatches, 2 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:03:55,323 INFO L413 NwaCegarLoop]: 78 mSDtfsCounter, 42 mSDsluCounter, 102 mSDsCounter, 0 mSdLazyCounter, 65 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 42 SdHoareTripleChecker+Valid, 180 SdHoareTripleChecker+Invalid, 68 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 65 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:55,324 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [42 Valid, 180 Invalid, 68 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 65 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:03:55,325 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 101 states. [2022-12-13 22:03:55,329 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 101 to 80. [2022-12-13 22:03:55,330 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 80 states, 58 states have (on average 1.5344827586206897) internal successors, (89), 74 states have internal predecessors, (89), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (6), 4 states have call predecessors, (6), 3 states have call successors, (6) [2022-12-13 22:03:55,331 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 80 states to 80 states and 98 transitions. [2022-12-13 22:03:55,331 INFO L78 Accepts]: Start accepts. Automaton has 80 states and 98 transitions. Word has length 11 [2022-12-13 22:03:55,331 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:55,332 INFO L495 AbstractCegarLoop]: Abstraction has 80 states and 98 transitions. [2022-12-13 22:03:55,332 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 3 states have (on average 3.0) internal successors, (9), 4 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) [2022-12-13 22:03:55,332 INFO L276 IsEmpty]: Start isEmpty. Operand 80 states and 98 transitions. [2022-12-13 22:03:55,332 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 12 [2022-12-13 22:03:55,332 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:55,332 INFO L195 NwaCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:55,343 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (5)] Ended with exit code 0 [2022-12-13 22:03:55,533 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 5 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,534 INFO L420 AbstractCegarLoop]: === Iteration 5 === Targeting ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:55,536 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:55,536 INFO L85 PathProgramCache]: Analyzing trace with hash 955406412, now seen corresponding path program 1 times [2022-12-13 22:03:55,537 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:55,538 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1400661810] [2022-12-13 22:03:55,539 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:55,539 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,540 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:55,543 INFO L229 MonitoredProcess]: Starting monitored process 6 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:55,546 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Waiting until timeout for monitored process [2022-12-13 22:03:55,666 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:55,668 INFO L263 TraceCheckSpWp]: Trace formula consists of 35 conjuncts, 7 conjunts are in the unsatisfiable core [2022-12-13 22:03:55,670 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:55,721 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:55,721 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:03:55,722 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:55,722 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1400661810] [2022-12-13 22:03:55,722 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1400661810] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:03:55,722 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:03:55,722 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:03:55,722 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754258888] [2022-12-13 22:03:55,722 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:03:55,722 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:03:55,723 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:55,723 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:03:55,723 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:55,723 INFO L87 Difference]: Start difference. First operand 80 states and 98 transitions. Second operand has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 22:03:55,749 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:55,749 INFO L93 Difference]: Finished difference Result 61 states and 67 transitions. [2022-12-13 22:03:55,749 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 5 states. [2022-12-13 22:03:55,750 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 states have internal predecessors, (9), 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 [2022-12-13 22:03:55,750 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:55,750 INFO L225 Difference]: With dead ends: 61 [2022-12-13 22:03:55,750 INFO L226 Difference]: Without dead ends: 59 [2022-12-13 22:03:55,750 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 10 GetRequests, 7 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:03:55,751 INFO L413 NwaCegarLoop]: 64 mSDtfsCounter, 0 mSDsluCounter, 177 mSDsCounter, 0 mSdLazyCounter, 15 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 0 SdHoareTripleChecker+Valid, 241 SdHoareTripleChecker+Invalid, 15 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 15 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:55,751 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [0 Valid, 241 Invalid, 15 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 15 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:03:55,752 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 59 states. [2022-12-13 22:03:55,753 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 59 to 59. [2022-12-13 22:03:55,754 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 59 states, 39 states have (on average 1.5384615384615385) internal successors, (60), 55 states have internal predecessors, (60), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:03:55,754 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 59 states to 59 states and 65 transitions. [2022-12-13 22:03:55,754 INFO L78 Accepts]: Start accepts. Automaton has 59 states and 65 transitions. Word has length 11 [2022-12-13 22:03:55,754 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:55,755 INFO L495 AbstractCegarLoop]: Abstraction has 59 states and 65 transitions. [2022-12-13 22:03:55,755 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 1.8) internal successors, (9), 4 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) [2022-12-13 22:03:55,755 INFO L276 IsEmpty]: Start isEmpty. Operand 59 states and 65 transitions. [2022-12-13 22:03:55,755 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 15 [2022-12-13 22:03:55,755 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:55,755 INFO L195 NwaCegarLoop]: trace histogram [2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:55,767 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (6)] Ended with exit code 0 [2022-12-13 22:03:55,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 6 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,957 INFO L420 AbstractCegarLoop]: === Iteration 6 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:55,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:55,958 INFO L85 PathProgramCache]: Analyzing trace with hash -39339339, now seen corresponding path program 1 times [2022-12-13 22:03:55,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:55,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [31652214] [2022-12-13 22:03:55,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:55,961 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:55,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:55,964 INFO L229 MonitoredProcess]: Starting monitored process 7 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:55,979 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Waiting until timeout for monitored process [2022-12-13 22:03:56,107 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:56,110 INFO L263 TraceCheckSpWp]: Trace formula consists of 56 conjuncts, 13 conjunts are in the unsatisfiable core [2022-12-13 22:03:56,112 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:56,134 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:03:56,250 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:56,250 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:03:56,787 INFO L134 CoverageAnalysis]: Checked inductivity of 2 backedges. 0 proven. 2 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:56,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:56,787 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [31652214] [2022-12-13 22:03:56,787 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [31652214] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:03:56,787 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:03:56,787 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-12-13 22:03:56,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [719730909] [2022-12-13 22:03:56,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:03:56,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:03:56,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:56,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:03:56,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=42, Invalid=198, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:03:56,789 INFO L87 Difference]: Start difference. First operand 59 states and 65 transitions. Second operand has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:03:57,933 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:57,933 INFO L93 Difference]: Finished difference Result 129 states and 147 transitions. [2022-12-13 22:03:57,934 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:03:57,934 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 14 [2022-12-13 22:03:57,934 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:57,935 INFO L225 Difference]: With dead ends: 129 [2022-12-13 22:03:57,935 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 22:03:57,935 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 35 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 23 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 73 ImplicationChecksByTransitivity, 0.9s TimeCoverageRelationStatistics Valid=114, Invalid=486, Unknown=0, NotChecked=0, Total=600 [2022-12-13 22:03:57,935 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 272 mSDsluCounter, 350 mSDsCounter, 0 mSdLazyCounter, 260 mSolverCounterSat, 17 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 275 SdHoareTripleChecker+Valid, 398 SdHoareTripleChecker+Invalid, 277 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 17 IncrementalHoareTripleChecker+Valid, 260 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:57,936 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [275 Valid, 398 Invalid, 277 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [17 Valid, 260 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2022-12-13 22:03:57,936 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 22:03:57,939 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 68. [2022-12-13 22:03:57,939 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 68 states, 48 states have (on average 1.4791666666666667) internal successors, (71), 64 states have internal predecessors, (71), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:03:57,940 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 68 states to 68 states and 76 transitions. [2022-12-13 22:03:57,940 INFO L78 Accepts]: Start accepts. Automaton has 68 states and 76 transitions. Word has length 14 [2022-12-13 22:03:57,940 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:57,940 INFO L495 AbstractCegarLoop]: Abstraction has 68 states and 76 transitions. [2022-12-13 22:03:57,940 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 1.7692307692307692) internal successors, (23), 14 states have internal predecessors, (23), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:03:57,940 INFO L276 IsEmpty]: Start isEmpty. Operand 68 states and 76 transitions. [2022-12-13 22:03:57,941 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 23 [2022-12-13 22:03:57,941 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:57,941 INFO L195 NwaCegarLoop]: trace histogram [2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:57,951 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (7)] Ended with exit code 0 [2022-12-13 22:03:58,141 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 7 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:58,143 INFO L420 AbstractCegarLoop]: === Iteration 7 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:58,144 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:58,144 INFO L85 PathProgramCache]: Analyzing trace with hash -1216843566, now seen corresponding path program 1 times [2022-12-13 22:03:58,145 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:58,146 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1210424311] [2022-12-13 22:03:58,146 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:03:58,147 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:58,147 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:58,150 INFO L229 MonitoredProcess]: Starting monitored process 8 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:58,153 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Waiting until timeout for monitored process [2022-12-13 22:03:58,252 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:03:58,254 INFO L263 TraceCheckSpWp]: Trace formula consists of 88 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:03:58,255 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:58,305 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:58,306 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:03:58,409 INFO L134 CoverageAnalysis]: Checked inductivity of 5 backedges. 0 proven. 5 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:58,409 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:03:58,410 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1210424311] [2022-12-13 22:03:58,410 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1210424311] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:03:58,410 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:03:58,410 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 10 [2022-12-13 22:03:58,410 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [564797835] [2022-12-13 22:03:58,410 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:03:58,410 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 10 states [2022-12-13 22:03:58,411 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:03:58,411 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 10 interpolants. [2022-12-13 22:03:58,411 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=33, Invalid=57, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:03:58,412 INFO L87 Difference]: Start difference. First operand 68 states and 76 transitions. Second operand has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:03:58,574 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:03:58,574 INFO L93 Difference]: Finished difference Result 74 states and 80 transitions. [2022-12-13 22:03:58,575 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 9 states. [2022-12-13 22:03:58,575 INFO L78 Accepts]: Start accepts. Automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 22 [2022-12-13 22:03:58,575 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:03:58,575 INFO L225 Difference]: With dead ends: 74 [2022-12-13 22:03:58,576 INFO L226 Difference]: Without dead ends: 74 [2022-12-13 22:03:58,576 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 45 GetRequests, 34 SyntacticMatches, 0 SemanticMatches, 11 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 18 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=63, Invalid=93, Unknown=0, NotChecked=0, Total=156 [2022-12-13 22:03:58,576 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 73 mSDsluCounter, 208 mSDsCounter, 0 mSdLazyCounter, 74 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 74 SdHoareTripleChecker+Valid, 262 SdHoareTripleChecker+Invalid, 76 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 74 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:03:58,576 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [74 Valid, 262 Invalid, 76 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 74 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:03:58,577 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 74 states. [2022-12-13 22:03:58,579 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 74 to 73. [2022-12-13 22:03:58,579 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 73 states, 53 states have (on average 1.4150943396226414) internal successors, (75), 69 states have internal predecessors, (75), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:03:58,580 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 73 states to 73 states and 80 transitions. [2022-12-13 22:03:58,580 INFO L78 Accepts]: Start accepts. Automaton has 73 states and 80 transitions. Word has length 22 [2022-12-13 22:03:58,580 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:03:58,580 INFO L495 AbstractCegarLoop]: Abstraction has 73 states and 80 transitions. [2022-12-13 22:03:58,580 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 10 states, 10 states have (on average 3.0) internal successors, (30), 10 states have internal predecessors, (30), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:03:58,580 INFO L276 IsEmpty]: Start isEmpty. Operand 73 states and 80 transitions. [2022-12-13 22:03:58,580 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 24 [2022-12-13 22:03:58,580 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:03:58,580 INFO L195 NwaCegarLoop]: trace histogram [5, 4, 4, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:03:58,591 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (8)] Ended with exit code 0 [2022-12-13 22:03:58,781 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 8 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:58,782 INFO L420 AbstractCegarLoop]: === Iteration 8 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:03:58,783 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:03:58,783 INFO L85 PathProgramCache]: Analyzing trace with hash 1294433228, now seen corresponding path program 2 times [2022-12-13 22:03:58,784 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:03:58,784 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [397282535] [2022-12-13 22:03:58,784 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:03:58,784 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:03:58,785 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:03:58,787 INFO L229 MonitoredProcess]: Starting monitored process 9 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:03:58,790 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Waiting until timeout for monitored process [2022-12-13 22:03:58,906 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:03:58,906 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:03:58,910 INFO L263 TraceCheckSpWp]: Trace formula consists of 101 conjuncts, 17 conjunts are in the unsatisfiable core [2022-12-13 22:03:58,911 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:03:58,925 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:03:59,243 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:03:59,243 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:00,685 INFO L134 CoverageAnalysis]: Checked inductivity of 26 backedges. 0 proven. 26 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:00,686 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:00,686 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [397282535] [2022-12-13 22:04:00,686 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [397282535] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:00,686 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:00,686 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [12, 12] total 23 [2022-12-13 22:04:00,686 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [688350959] [2022-12-13 22:04:00,686 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:00,687 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 24 states [2022-12-13 22:04:00,687 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:00,687 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 24 interpolants. [2022-12-13 22:04:00,688 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=113, Invalid=439, Unknown=0, NotChecked=0, Total=552 [2022-12-13 22:04:00,688 INFO L87 Difference]: Start difference. First operand 73 states and 80 transitions. Second operand has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:04,089 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:04,089 INFO L93 Difference]: Finished difference Result 107 states and 121 transitions. [2022-12-13 22:04:04,089 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 24 states. [2022-12-13 22:04:04,089 INFO L78 Accepts]: Start accepts. Automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 23 [2022-12-13 22:04:04,090 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:04,091 INFO L225 Difference]: With dead ends: 107 [2022-12-13 22:04:04,091 INFO L226 Difference]: Without dead ends: 107 [2022-12-13 22:04:04,091 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 57 GetRequests, 22 SyntacticMatches, 0 SemanticMatches, 35 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 239 ImplicationChecksByTransitivity, 3.3s TimeCoverageRelationStatistics Valid=311, Invalid=1021, Unknown=0, NotChecked=0, Total=1332 [2022-12-13 22:04:04,092 INFO L413 NwaCegarLoop]: 48 mSDtfsCounter, 261 mSDsluCounter, 564 mSDsCounter, 0 mSdLazyCounter, 477 mSolverCounterSat, 29 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 263 SdHoareTripleChecker+Valid, 612 SdHoareTripleChecker+Invalid, 506 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 29 IncrementalHoareTripleChecker+Valid, 477 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:04,092 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [263 Valid, 612 Invalid, 506 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [29 Valid, 477 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2022-12-13 22:04:04,092 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 107 states. [2022-12-13 22:04:04,097 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 107 to 86. [2022-12-13 22:04:04,097 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 86 states, 66 states have (on average 1.378787878787879) internal successors, (91), 82 states have internal predecessors, (91), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:04,098 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 86 states to 86 states and 96 transitions. [2022-12-13 22:04:04,098 INFO L78 Accepts]: Start accepts. Automaton has 86 states and 96 transitions. Word has length 23 [2022-12-13 22:04:04,099 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:04,099 INFO L495 AbstractCegarLoop]: Abstraction has 86 states and 96 transitions. [2022-12-13 22:04:04,099 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 24 states, 21 states have (on average 1.9523809523809523) internal successors, (41), 22 states have internal predecessors, (41), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:04,099 INFO L276 IsEmpty]: Start isEmpty. Operand 86 states and 96 transitions. [2022-12-13 22:04:04,100 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 35 [2022-12-13 22:04:04,100 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:04,100 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:04,121 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (9)] Ended with exit code 0 [2022-12-13 22:04:04,300 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 9 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:04,301 INFO L420 AbstractCegarLoop]: === Iteration 9 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:04,301 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:04,301 INFO L85 PathProgramCache]: Analyzing trace with hash 1064458770, now seen corresponding path program 2 times [2022-12-13 22:04:04,301 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:04,301 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [420471027] [2022-12-13 22:04:04,301 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:04:04,301 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:04,301 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:04,302 INFO L229 MonitoredProcess]: Starting monitored process 10 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:04,306 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Waiting until timeout for monitored process [2022-12-13 22:04:04,345 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 1 check-sat command(s) [2022-12-13 22:04:04,345 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:04:04,347 INFO L263 TraceCheckSpWp]: Trace formula consists of 58 conjuncts, 5 conjunts are in the unsatisfiable core [2022-12-13 22:04:04,349 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:04,386 INFO L134 CoverageAnalysis]: Checked inductivity of 51 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 51 trivial. 0 not checked. [2022-12-13 22:04:04,386 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:04:04,386 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:04,386 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [420471027] [2022-12-13 22:04:04,386 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [420471027] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:04,386 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:04,387 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:04:04,387 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [10110140] [2022-12-13 22:04:04,387 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:04,387 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:04,387 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:04,388 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:04,388 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:04,388 INFO L87 Difference]: Start difference. First operand 86 states and 96 transitions. Second operand has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2022-12-13 22:04:04,437 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:04,437 INFO L93 Difference]: Finished difference Result 126 states and 140 transitions. [2022-12-13 22:04:04,438 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:04:04,438 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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 [2022-12-13 22:04:04,438 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:04,439 INFO L225 Difference]: With dead ends: 126 [2022-12-13 22:04:04,439 INFO L226 Difference]: Without dead ends: 126 [2022-12-13 22:04:04,439 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 34 GetRequests, 31 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:04:04,439 INFO L413 NwaCegarLoop]: 53 mSDtfsCounter, 126 mSDsluCounter, 56 mSDsCounter, 0 mSdLazyCounter, 20 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 127 SdHoareTripleChecker+Valid, 109 SdHoareTripleChecker+Invalid, 22 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 20 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:04,439 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [127 Valid, 109 Invalid, 22 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 20 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:04:04,440 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 126 states. [2022-12-13 22:04:04,445 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 126 to 87. [2022-12-13 22:04:04,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.373134328358209) internal successors, (92), 83 states have internal predecessors, (92), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:04,446 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 97 transitions. [2022-12-13 22:04:04,446 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 97 transitions. Word has length 34 [2022-12-13 22:04:04,446 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:04,446 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 97 transitions. [2022-12-13 22:04:04,446 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.25) internal successors, (17), 4 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) [2022-12-13 22:04:04,446 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 97 transitions. [2022-12-13 22:04:04,448 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 39 [2022-12-13 22:04:04,448 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:04,448 INFO L195 NwaCegarLoop]: trace histogram [6, 6, 6, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:04,456 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (10)] Forceful destruction successful, exit code 0 [2022-12-13 22:04:04,648 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 10 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:04,649 INFO L420 AbstractCegarLoop]: === Iteration 10 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:04,650 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:04,651 INFO L85 PathProgramCache]: Analyzing trace with hash 391656853, now seen corresponding path program 1 times [2022-12-13 22:04:04,652 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:04,652 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1272607909] [2022-12-13 22:04:04,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:04,652 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:04,653 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:04,655 INFO L229 MonitoredProcess]: Starting monitored process 11 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:04,658 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Waiting until timeout for monitored process [2022-12-13 22:04:04,805 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:04,810 INFO L263 TraceCheckSpWp]: Trace formula consists of 160 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 22:04:04,812 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:04,935 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 4 proven. 51 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:04,935 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:05,244 INFO L134 CoverageAnalysis]: Checked inductivity of 55 backedges. 0 proven. 51 refuted. 0 times theorem prover too weak. 4 trivial. 0 not checked. [2022-12-13 22:04:05,245 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:05,245 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1272607909] [2022-12-13 22:04:05,245 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1272607909] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:05,245 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:05,245 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 18 [2022-12-13 22:04:05,245 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [309978117] [2022-12-13 22:04:05,245 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:05,245 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 18 states [2022-12-13 22:04:05,245 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:05,246 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 18 interpolants. [2022-12-13 22:04:05,246 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=91, Invalid=215, Unknown=0, NotChecked=0, Total=306 [2022-12-13 22:04:05,246 INFO L87 Difference]: Start difference. First operand 87 states and 97 transitions. Second operand has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 22:04:05,527 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:05,527 INFO L93 Difference]: Finished difference Result 87 states and 93 transitions. [2022-12-13 22:04:05,528 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 13 states. [2022-12-13 22:04:05,528 INFO L78 Accepts]: Start accepts. Automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) Word has length 38 [2022-12-13 22:04:05,528 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:05,528 INFO L225 Difference]: With dead ends: 87 [2022-12-13 22:04:05,528 INFO L226 Difference]: Without dead ends: 87 [2022-12-13 22:04:05,529 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 77 GetRequests, 58 SyntacticMatches, 0 SemanticMatches, 19 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 81 ImplicationChecksByTransitivity, 0.4s TimeCoverageRelationStatistics Valid=133, Invalid=287, Unknown=0, NotChecked=0, Total=420 [2022-12-13 22:04:05,529 INFO L413 NwaCegarLoop]: 54 mSDtfsCounter, 70 mSDsluCounter, 355 mSDsCounter, 0 mSdLazyCounter, 222 mSolverCounterSat, 1 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 71 SdHoareTripleChecker+Valid, 409 SdHoareTripleChecker+Invalid, 223 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 1 IncrementalHoareTripleChecker+Valid, 222 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:05,529 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [71 Valid, 409 Invalid, 223 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [1 Valid, 222 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:04:05,530 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 87 states. [2022-12-13 22:04:05,531 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 87 to 87. [2022-12-13 22:04:05,531 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 67 states have (on average 1.3134328358208955) internal successors, (88), 83 states have internal predecessors, (88), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:05,532 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 93 transitions. [2022-12-13 22:04:05,532 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 93 transitions. Word has length 38 [2022-12-13 22:04:05,532 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:05,532 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 93 transitions. [2022-12-13 22:04:05,532 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 18 states, 18 states have (on average 3.111111111111111) internal successors, (56), 18 states have internal predecessors, (56), 3 states have call successors, (4), 2 states have call predecessors, (4), 2 states have return successors, (4), 3 states have call predecessors, (4), 3 states have call successors, (4) [2022-12-13 22:04:05,532 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 93 transitions. [2022-12-13 22:04:05,532 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 42 [2022-12-13 22:04:05,533 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:05,533 INFO L195 NwaCegarLoop]: trace histogram [11, 10, 10, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:05,540 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (11)] Ended with exit code 0 [2022-12-13 22:04:05,733 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 11 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:05,733 INFO L420 AbstractCegarLoop]: === Iteration 11 === Targeting ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:05,734 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:05,734 INFO L85 PathProgramCache]: Analyzing trace with hash 1227509228, now seen corresponding path program 3 times [2022-12-13 22:04:05,734 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:05,734 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1344204922] [2022-12-13 22:04:05,734 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST2 [2022-12-13 22:04:05,734 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:05,734 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:05,735 INFO L229 MonitoredProcess]: Starting monitored process 12 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:05,736 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Waiting until timeout for monitored process [2022-12-13 22:04:05,895 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST2 issued 11 check-sat command(s) [2022-12-13 22:04:05,895 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:04:05,901 INFO L263 TraceCheckSpWp]: Trace formula consists of 191 conjuncts, 25 conjunts are in the unsatisfiable core [2022-12-13 22:04:05,904 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:05,917 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:06,440 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 10 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:06,440 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:11,403 INFO L134 CoverageAnalysis]: Checked inductivity of 155 backedges. 0 proven. 155 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:11,403 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:11,403 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1344204922] [2022-12-13 22:04:11,403 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1344204922] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:11,403 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:11,403 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [18, 19] total 36 [2022-12-13 22:04:11,403 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [790912627] [2022-12-13 22:04:11,403 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:11,403 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 36 states [2022-12-13 22:04:11,403 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:11,404 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 36 interpolants. [2022-12-13 22:04:11,404 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=281, Invalid=979, Unknown=0, NotChecked=0, Total=1260 [2022-12-13 22:04:11,404 INFO L87 Difference]: Start difference. First operand 87 states and 93 transitions. Second operand has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:16,012 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:16,012 INFO L93 Difference]: Finished difference Result 129 states and 142 transitions. [2022-12-13 22:04:16,012 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 21 states. [2022-12-13 22:04:16,013 INFO L78 Accepts]: Start accepts. Automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 41 [2022-12-13 22:04:16,013 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:16,013 INFO L225 Difference]: With dead ends: 129 [2022-12-13 22:04:16,013 INFO L226 Difference]: Without dead ends: 129 [2022-12-13 22:04:16,014 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 84 GetRequests, 46 SyntacticMatches, 0 SemanticMatches, 38 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 385 ImplicationChecksByTransitivity, 5.8s TimeCoverageRelationStatistics Valid=328, Invalid=1232, Unknown=0, NotChecked=0, Total=1560 [2022-12-13 22:04:16,014 INFO L413 NwaCegarLoop]: 40 mSDtfsCounter, 701 mSDsluCounter, 720 mSDsCounter, 0 mSdLazyCounter, 851 mSolverCounterSat, 36 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 2.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 703 SdHoareTripleChecker+Valid, 760 SdHoareTripleChecker+Invalid, 887 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 36 IncrementalHoareTripleChecker+Valid, 851 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 2.6s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:16,014 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [703 Valid, 760 Invalid, 887 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [36 Valid, 851 Invalid, 0 Unknown, 0 Unchecked, 2.6s Time] [2022-12-13 22:04:16,014 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 129 states. [2022-12-13 22:04:16,016 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 129 to 85. [2022-12-13 22:04:16,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 85 states, 66 states have (on average 1.2878787878787878) internal successors, (85), 81 states have internal predecessors, (85), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:16,017 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 85 states to 85 states and 90 transitions. [2022-12-13 22:04:16,017 INFO L78 Accepts]: Start accepts. Automaton has 85 states and 90 transitions. Word has length 41 [2022-12-13 22:04:16,017 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:16,017 INFO L495 AbstractCegarLoop]: Abstraction has 85 states and 90 transitions. [2022-12-13 22:04:16,017 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 36 states, 34 states have (on average 2.264705882352941) internal successors, (77), 34 states have internal predecessors, (77), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:16,017 INFO L276 IsEmpty]: Start isEmpty. Operand 85 states and 90 transitions. [2022-12-13 22:04:16,018 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 22:04:16,018 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:16,018 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:16,029 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (12)] Ended with exit code 0 [2022-12-13 22:04:16,218 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 12 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:16,219 INFO L420 AbstractCegarLoop]: === Iteration 12 === Targeting ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:16,220 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:16,220 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862613, now seen corresponding path program 2 times [2022-12-13 22:04:16,221 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:16,221 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1523756698] [2022-12-13 22:04:16,222 INFO L93 rtionOrderModulation]: Changing assertion order to OUTSIDE_LOOP_FIRST1 [2022-12-13 22:04:16,222 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:16,222 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:16,247 INFO L229 MonitoredProcess]: Starting monitored process 13 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:16,249 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Waiting until timeout for monitored process [2022-12-13 22:04:16,396 INFO L228 tOrderPrioritization]: Assert order OUTSIDE_LOOP_FIRST1 issued 2 check-sat command(s) [2022-12-13 22:04:16,396 INFO L229 tOrderPrioritization]: Conjunction of SSA is unsat [2022-12-13 22:04:16,402 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 11 conjunts are in the unsatisfiable core [2022-12-13 22:04:16,404 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:16,407 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:16,485 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (= (store |c_old(#valid)| |ldv_malloc_#res.base| (_ bv1 1)) |c_#valid|)) is different from true [2022-12-13 22:04:16,500 INFO L321 Elim1Store]: treesize reduction 17, result has 29.2 percent of original size [2022-12-13 22:04:16,500 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 14 treesize of output 20 [2022-12-13 22:04:16,515 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-13 22:04:16,515 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:16,669 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 22:04:16,670 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:16,670 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1523756698] [2022-12-13 22:04:16,670 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1523756698] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:16,670 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:16,670 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [7, 6] total 8 [2022-12-13 22:04:16,670 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [307151503] [2022-12-13 22:04:16,670 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:16,671 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 9 states [2022-12-13 22:04:16,671 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:16,671 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 9 interpolants. [2022-12-13 22:04:16,671 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=16, Invalid=43, Unknown=1, NotChecked=12, Total=72 [2022-12-13 22:04:16,671 INFO L87 Difference]: Start difference. First operand 85 states and 90 transitions. Second operand has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:16,872 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:16,872 INFO L93 Difference]: Finished difference Result 122 states and 128 transitions. [2022-12-13 22:04:16,872 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:04:16,873 INFO L78 Accepts]: Start accepts. Automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-12-13 22:04:16,873 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:16,874 INFO L225 Difference]: With dead ends: 122 [2022-12-13 22:04:16,874 INFO L226 Difference]: Without dead ends: 122 [2022-12-13 22:04:16,874 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 100 GetRequests, 88 SyntacticMatches, 3 SemanticMatches, 9 ConstructedPredicates, 1 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=24, Invalid=69, Unknown=1, NotChecked=16, Total=110 [2022-12-13 22:04:16,874 INFO L413 NwaCegarLoop]: 41 mSDtfsCounter, 94 mSDsluCounter, 150 mSDsCounter, 0 mSdLazyCounter, 129 mSolverCounterSat, 7 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 94 SdHoareTripleChecker+Valid, 191 SdHoareTripleChecker+Invalid, 208 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 7 IncrementalHoareTripleChecker+Valid, 129 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 72 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:16,875 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [94 Valid, 191 Invalid, 208 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [7 Valid, 129 Invalid, 0 Unknown, 72 Unchecked, 0.2s Time] [2022-12-13 22:04:16,875 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 122 states. [2022-12-13 22:04:16,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 122 to 83. [2022-12-13 22:04:16,878 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 83 states, 66 states have (on average 1.2575757575757576) internal successors, (83), 79 states have internal predecessors, (83), 2 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:16,878 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 83 states to 83 states and 88 transitions. [2022-12-13 22:04:16,879 INFO L78 Accepts]: Start accepts. Automaton has 83 states and 88 transitions. Word has length 50 [2022-12-13 22:04:16,879 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:16,879 INFO L495 AbstractCegarLoop]: Abstraction has 83 states and 88 transitions. [2022-12-13 22:04:16,879 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 9 states, 8 states have (on average 2.75) internal successors, (22), 8 states have internal predecessors, (22), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:16,879 INFO L276 IsEmpty]: Start isEmpty. Operand 83 states and 88 transitions. [2022-12-13 22:04:16,880 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 51 [2022-12-13 22:04:16,880 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:16,880 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:16,889 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (13)] Ended with exit code 0 [2022-12-13 22:04:17,081 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 13 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:17,082 INFO L420 AbstractCegarLoop]: === Iteration 13 === Targeting ULTIMATE.startErr3REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:17,082 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:17,083 INFO L85 PathProgramCache]: Analyzing trace with hash 1389862614, now seen corresponding path program 1 times [2022-12-13 22:04:17,084 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:17,084 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [800744303] [2022-12-13 22:04:17,084 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:17,085 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:17,085 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:17,088 INFO L229 MonitoredProcess]: Starting monitored process 14 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:17,090 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Waiting until timeout for monitored process [2022-12-13 22:04:17,244 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:17,251 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 22:04:17,253 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:17,266 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:17,269 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:17,573 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (exists ((v_ArrVal_337 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_337))) (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)))) is different from true [2022-12-13 22:04:17,588 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:04:17,589 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 22:04:17,599 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 22:04:17,600 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 22:04:17,641 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-13 22:04:17,641 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:20,014 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [800744303] [2022-12-13 22:04:20,014 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [800744303] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:04:20,014 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleCvc4 [1515521069] [2022-12-13 22:04:20,014 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:20,014 INFO L173 SolverBuilder]: Constructing external solver with command: cvc4 --incremental --print-success --lang smt [2022-12-13 22:04:20,014 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/cvc4 [2022-12-13 22:04:20,015 INFO L229 MonitoredProcess]: Starting monitored process 15 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (exit command is (exit), workingDir is null) [2022-12-13 22:04:20,016 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (15)] Waiting until timeout for monitored process [2022-12-13 22:04:20,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:20,304 INFO L263 TraceCheckSpWp]: Trace formula consists of 220 conjuncts, 24 conjunts are in the unsatisfiable core [2022-12-13 22:04:20,306 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:20,316 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:20,321 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:20,577 WARN L859 $PredicateComparison]: unable to prove that (exists ((|ldv_malloc_#res.base| (_ BitVec 32))) (and (= (_ bv0 1) (select |c_old(#valid)| |ldv_malloc_#res.base|)) (exists ((v_ArrVal_407 (_ BitVec 32))) (= |c_#length| (store |c_old(#length)| |ldv_malloc_#res.base| v_ArrVal_407))))) is different from true [2022-12-13 22:04:20,595 INFO L190 IndexEqualityManager]: detected not equals via solver [2022-12-13 22:04:20,596 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 1 stores, 1 select indices, 1 select index equivalence classes, 1 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 12 treesize of output 14 [2022-12-13 22:04:20,607 INFO L321 Elim1Store]: treesize reduction 6, result has 40.0 percent of original size [2022-12-13 22:04:20,607 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 2 select indices, 2 select index equivalence classes, 0 disjoint index pairs (out of 1 index pairs), introduced 2 new quantified variables, introduced 1 case distinctions, treesize of input 13 treesize of output 13 [2022-12-13 22:04:20,623 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 1 refuted. 0 times theorem prover too weak. 145 trivial. 2 not checked. [2022-12-13 22:04:20,623 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:22,830 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleCvc4 [1515521069] provided 0 perfect and 1 imperfect interpolant sequences [2022-12-13 22:04:22,830 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:22,830 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [10, 10] total 11 [2022-12-13 22:04:22,830 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1418717100] [2022-12-13 22:04:22,830 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:22,830 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 12 states [2022-12-13 22:04:22,830 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:22,831 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 12 interpolants. [2022-12-13 22:04:22,831 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=29, Invalid=109, Unknown=2, NotChecked=42, Total=182 [2022-12-13 22:04:22,831 INFO L87 Difference]: Start difference. First operand 83 states and 88 transitions. Second operand has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:23,550 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:23,550 INFO L93 Difference]: Finished difference Result 202 states and 219 transitions. [2022-12-13 22:04:23,550 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:04:23,550 INFO L78 Accepts]: Start accepts. Automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 50 [2022-12-13 22:04:23,551 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:23,551 INFO L225 Difference]: With dead ends: 202 [2022-12-13 22:04:23,551 INFO L226 Difference]: Without dead ends: 202 [2022-12-13 22:04:23,551 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 113 GetRequests, 93 SyntacticMatches, 1 SemanticMatches, 19 ConstructedPredicates, 2 IntricatePredicates, 0 DeprecatedPredicates, 21 ImplicationChecksByTransitivity, 4.6s TimeCoverageRelationStatistics Valid=69, Invalid=279, Unknown=2, NotChecked=70, Total=420 [2022-12-13 22:04:23,552 INFO L413 NwaCegarLoop]: 67 mSDtfsCounter, 211 mSDsluCounter, 370 mSDsCounter, 0 mSdLazyCounter, 426 mSolverCounterSat, 12 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.4s Time, 0 mProtectedPredicate, 0 mProtectedAction, 214 SdHoareTripleChecker+Valid, 437 SdHoareTripleChecker+Invalid, 654 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 12 IncrementalHoareTripleChecker+Valid, 426 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 216 IncrementalHoareTripleChecker+Unchecked, 0.5s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:23,552 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [214 Valid, 437 Invalid, 654 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [12 Valid, 426 Invalid, 0 Unknown, 216 Unchecked, 0.5s Time] [2022-12-13 22:04:23,552 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 202 states. [2022-12-13 22:04:23,554 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 202 to 87. [2022-12-13 22:04:23,554 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 87 states, 69 states have (on average 1.2608695652173914) internal successors, (87), 82 states have internal predecessors, (87), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 3 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:04:23,554 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 87 states to 87 states and 95 transitions. [2022-12-13 22:04:23,554 INFO L78 Accepts]: Start accepts. Automaton has 87 states and 95 transitions. Word has length 50 [2022-12-13 22:04:23,555 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:23,555 INFO L495 AbstractCegarLoop]: Abstraction has 87 states and 95 transitions. [2022-12-13 22:04:23,555 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 12 states, 10 states have (on average 2.1) internal successors, (21), 11 states have internal predecessors, (21), 2 states have call successors, (2), 2 states have call predecessors, (2), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:23,555 INFO L276 IsEmpty]: Start isEmpty. Operand 87 states and 95 transitions. [2022-12-13 22:04:23,555 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 22:04:23,555 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:23,555 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:23,559 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt (15)] Forceful destruction successful, exit code 0 [2022-12-13 22:04:23,768 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (14)] Forceful destruction successful, exit code 0 [2022-12-13 22:04:23,956 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 15 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/cvc4 --incremental --print-success --lang smt,14 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:23,957 INFO L420 AbstractCegarLoop]: === Iteration 14 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:23,958 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:23,959 INFO L85 PathProgramCache]: Analyzing trace with hash -76906781, now seen corresponding path program 1 times [2022-12-13 22:04:23,959 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:23,960 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1955226088] [2022-12-13 22:04:23,960 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:23,960 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:23,961 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:23,963 INFO L229 MonitoredProcess]: Starting monitored process 16 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:23,964 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Waiting until timeout for monitored process [2022-12-13 22:04:24,065 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:24,071 INFO L263 TraceCheckSpWp]: Trace formula consists of 223 conjuncts, 4 conjunts are in the unsatisfiable core [2022-12-13 22:04:24,072 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:24,088 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 0 refuted. 0 times theorem prover too weak. 147 trivial. 0 not checked. [2022-12-13 22:04:24,088 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:04:24,088 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:24,088 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1955226088] [2022-12-13 22:04:24,088 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1955226088] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:24,089 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:24,089 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2022-12-13 22:04:24,089 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1639369198] [2022-12-13 22:04:24,089 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:24,089 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2022-12-13 22:04:24,089 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:24,090 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2022-12-13 22:04:24,090 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:04:24,090 INFO L87 Difference]: Start difference. First operand 87 states and 95 transitions. Second operand has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 22:04:24,123 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:24,123 INFO L93 Difference]: Finished difference Result 116 states and 127 transitions. [2022-12-13 22:04:24,123 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2022-12-13 22:04:24,123 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) Word has length 52 [2022-12-13 22:04:24,123 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:24,124 INFO L225 Difference]: With dead ends: 116 [2022-12-13 22:04:24,124 INFO L226 Difference]: Without dead ends: 116 [2022-12-13 22:04:24,124 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 48 SyntacticMatches, 0 SemanticMatches, 4 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=11, Invalid=19, Unknown=0, NotChecked=0, Total=30 [2022-12-13 22:04:24,124 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 23 mSDsluCounter, 164 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 25 SdHoareTripleChecker+Valid, 222 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:24,124 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [25 Valid, 222 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:04:24,125 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 116 states. [2022-12-13 22:04:24,126 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 116 to 91. [2022-12-13 22:04:24,126 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 91 states, 73 states have (on average 1.2465753424657535) internal successors, (91), 84 states have internal predecessors, (91), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:04:24,126 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 91 states to 91 states and 99 transitions. [2022-12-13 22:04:24,127 INFO L78 Accepts]: Start accepts. Automaton has 91 states and 99 transitions. Word has length 52 [2022-12-13 22:04:24,127 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:24,127 INFO L495 AbstractCegarLoop]: Abstraction has 91 states and 99 transitions. [2022-12-13 22:04:24,127 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 4.0) internal successors, (20), 4 states have internal predecessors, (20), 1 states have call successors, (2), 1 states have call predecessors, (2), 2 states have return successors, (2), 2 states have call predecessors, (2), 1 states have call successors, (2) [2022-12-13 22:04:24,127 INFO L276 IsEmpty]: Start isEmpty. Operand 91 states and 99 transitions. [2022-12-13 22:04:24,128 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 53 [2022-12-13 22:04:24,128 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:24,128 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:24,137 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (16)] Ended with exit code 0 [2022-12-13 22:04:24,328 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 16 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:24,329 INFO L420 AbstractCegarLoop]: === Iteration 15 === Targeting ULTIMATE.startErr5REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:24,330 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:24,330 INFO L85 PathProgramCache]: Analyzing trace with hash 1665903554, now seen corresponding path program 1 times [2022-12-13 22:04:24,331 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:24,332 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2058920416] [2022-12-13 22:04:24,332 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:24,332 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:24,333 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:24,335 INFO L229 MonitoredProcess]: Starting monitored process 17 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:24,338 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Waiting until timeout for monitored process [2022-12-13 22:04:24,537 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:24,543 INFO L263 TraceCheckSpWp]: Trace formula consists of 217 conjuncts, 3 conjunts are in the unsatisfiable core [2022-12-13 22:04:24,545 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:24,559 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 22:04:24,560 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2022-12-13 22:04:24,560 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:24,560 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2058920416] [2022-12-13 22:04:24,560 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2058920416] provided 1 perfect and 0 imperfect interpolant sequences [2022-12-13 22:04:24,560 INFO L184 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2022-12-13 22:04:24,560 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [4] imperfect sequences [] total 4 [2022-12-13 22:04:24,560 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [509104019] [2022-12-13 22:04:24,560 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2022-12-13 22:04:24,561 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 4 states [2022-12-13 22:04:24,561 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:24,561 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 4 interpolants. [2022-12-13 22:04:24,561 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=5, Invalid=7, Unknown=0, NotChecked=0, Total=12 [2022-12-13 22:04:24,561 INFO L87 Difference]: Start difference. First operand 91 states and 99 transitions. Second operand has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:24,616 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:24,616 INFO L93 Difference]: Finished difference Result 111 states and 119 transitions. [2022-12-13 22:04:24,616 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 4 states. [2022-12-13 22:04:24,616 INFO L78 Accepts]: Start accepts. Automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) Word has length 52 [2022-12-13 22:04:24,617 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:24,617 INFO L225 Difference]: With dead ends: 111 [2022-12-13 22:04:24,617 INFO L226 Difference]: Without dead ends: 111 [2022-12-13 22:04:24,617 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 52 GetRequests, 49 SyntacticMatches, 0 SemanticMatches, 3 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.0s TimeCoverageRelationStatistics Valid=9, Invalid=11, Unknown=0, NotChecked=0, Total=20 [2022-12-13 22:04:24,617 INFO L413 NwaCegarLoop]: 70 mSDtfsCounter, 39 mSDsluCounter, 98 mSDsCounter, 0 mSdLazyCounter, 23 mSolverCounterSat, 0 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 39 SdHoareTripleChecker+Valid, 168 SdHoareTripleChecker+Invalid, 23 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 0 IncrementalHoareTripleChecker+Valid, 23 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:24,618 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [39 Valid, 168 Invalid, 23 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [0 Valid, 23 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2022-12-13 22:04:24,618 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 111 states. [2022-12-13 22:04:24,619 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 111 to 93. [2022-12-13 22:04:24,619 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 93 states, 75 states have (on average 1.24) internal successors, (93), 86 states have internal predecessors, (93), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:04:24,620 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 93 states to 93 states and 101 transitions. [2022-12-13 22:04:24,620 INFO L78 Accepts]: Start accepts. Automaton has 93 states and 101 transitions. Word has length 52 [2022-12-13 22:04:24,620 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:24,620 INFO L495 AbstractCegarLoop]: Abstraction has 93 states and 101 transitions. [2022-12-13 22:04:24,620 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 4 states, 4 states have (on average 4.75) internal successors, (19), 4 states have internal predecessors, (19), 2 states have call successors, (2), 1 states have call predecessors, (2), 1 states have return successors, (2), 2 states have call predecessors, (2), 2 states have call successors, (2) [2022-12-13 22:04:24,620 INFO L276 IsEmpty]: Start isEmpty. Operand 93 states and 101 transitions. [2022-12-13 22:04:24,621 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 22:04:24,621 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:24,621 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:24,629 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (17)] Forceful destruction successful, exit code 0 [2022-12-13 22:04:24,821 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 17 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:24,822 INFO L420 AbstractCegarLoop]: === Iteration 16 === Targeting ULTIMATE.startErr11REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:24,823 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:24,823 INFO L85 PathProgramCache]: Analyzing trace with hash 584357413, now seen corresponding path program 1 times [2022-12-13 22:04:24,824 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:24,825 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [2108895745] [2022-12-13 22:04:24,825 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:24,825 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:24,826 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:24,828 INFO L229 MonitoredProcess]: Starting monitored process 18 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:24,831 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Waiting until timeout for monitored process [2022-12-13 22:04:24,934 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:24,940 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 9 conjunts are in the unsatisfiable core [2022-12-13 22:04:24,941 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:24,944 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:25,049 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 22:04:25,049 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:25,166 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 2 proven. 2 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 22:04:25,166 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:25,166 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [2108895745] [2022-12-13 22:04:25,167 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [2108895745] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:25,167 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:25,167 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [6, 6] total 7 [2022-12-13 22:04:25,167 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [864136525] [2022-12-13 22:04:25,167 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:25,167 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:04:25,167 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:25,167 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:04:25,167 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=14, Invalid=42, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:04:25,168 INFO L87 Difference]: Start difference. First operand 93 states and 101 transitions. Second operand has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:25,412 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:25,412 INFO L93 Difference]: Finished difference Result 117 states and 126 transitions. [2022-12-13 22:04:25,413 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 8 states. [2022-12-13 22:04:25,413 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) Word has length 55 [2022-12-13 22:04:25,413 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:25,414 INFO L225 Difference]: With dead ends: 117 [2022-12-13 22:04:25,414 INFO L226 Difference]: Without dead ends: 117 [2022-12-13 22:04:25,414 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 110 GetRequests, 102 SyntacticMatches, 0 SemanticMatches, 8 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 1 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=68, Unknown=0, NotChecked=0, Total=90 [2022-12-13 22:04:25,415 INFO L413 NwaCegarLoop]: 43 mSDtfsCounter, 43 mSDsluCounter, 190 mSDsCounter, 0 mSdLazyCounter, 147 mSolverCounterSat, 3 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 43 SdHoareTripleChecker+Valid, 233 SdHoareTripleChecker+Invalid, 150 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 3 IncrementalHoareTripleChecker+Valid, 147 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.2s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:25,415 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [43 Valid, 233 Invalid, 150 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [3 Valid, 147 Invalid, 0 Unknown, 0 Unchecked, 0.2s Time] [2022-12-13 22:04:25,416 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 117 states. [2022-12-13 22:04:25,418 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 117 to 98. [2022-12-13 22:04:25,418 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 98 states, 80 states have (on average 1.2625) internal successors, (101), 91 states have internal predecessors, (101), 3 states have call successors, (3), 1 states have call predecessors, (3), 2 states have return successors, (5), 5 states have call predecessors, (5), 3 states have call successors, (5) [2022-12-13 22:04:25,419 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 98 states to 98 states and 109 transitions. [2022-12-13 22:04:25,419 INFO L78 Accepts]: Start accepts. Automaton has 98 states and 109 transitions. Word has length 55 [2022-12-13 22:04:25,419 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:25,419 INFO L495 AbstractCegarLoop]: Abstraction has 98 states and 109 transitions. [2022-12-13 22:04:25,420 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 7 states have (on average 3.857142857142857) internal successors, (27), 7 states have internal predecessors, (27), 2 states have call successors, (3), 3 states have call predecessors, (3), 3 states have return successors, (3), 2 states have call predecessors, (3), 2 states have call successors, (3) [2022-12-13 22:04:25,420 INFO L276 IsEmpty]: Start isEmpty. Operand 98 states and 109 transitions. [2022-12-13 22:04:25,420 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 56 [2022-12-13 22:04:25,420 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:25,420 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:25,430 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (18)] Ended with exit code 0 [2022-12-13 22:04:25,621 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 18 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:25,622 INFO L420 AbstractCegarLoop]: === Iteration 17 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:25,623 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:25,624 INFO L85 PathProgramCache]: Analyzing trace with hash 584357414, now seen corresponding path program 1 times [2022-12-13 22:04:25,624 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:25,625 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1026873068] [2022-12-13 22:04:25,625 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:25,625 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:25,625 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:25,628 INFO L229 MonitoredProcess]: Starting monitored process 19 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:25,631 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Waiting until timeout for monitored process [2022-12-13 22:04:25,729 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:25,735 INFO L263 TraceCheckSpWp]: Trace formula consists of 226 conjuncts, 18 conjunts are in the unsatisfiable core [2022-12-13 22:04:25,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:25,748 INFO L350 Elim1Store]: Elim1 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 [2022-12-13 22:04:25,916 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 22:04:25,916 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:26,787 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 1 proven. 3 refuted. 0 times theorem prover too weak. 145 trivial. 0 not checked. [2022-12-13 22:04:26,787 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:26,788 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1026873068] [2022-12-13 22:04:26,788 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1026873068] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:26,788 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:26,788 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [8, 8] total 15 [2022-12-13 22:04:26,788 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [800249181] [2022-12-13 22:04:26,788 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:26,788 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 16 states [2022-12-13 22:04:26,788 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:26,789 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 16 interpolants. [2022-12-13 22:04:26,789 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=36, Invalid=204, Unknown=0, NotChecked=0, Total=240 [2022-12-13 22:04:26,789 INFO L87 Difference]: Start difference. First operand 98 states and 109 transitions. Second operand has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:04:27,841 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:27,841 INFO L93 Difference]: Finished difference Result 164 states and 182 transitions. [2022-12-13 22:04:27,841 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 11 states. [2022-12-13 22:04:27,842 INFO L78 Accepts]: Start accepts. Automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 55 [2022-12-13 22:04:27,842 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:27,842 INFO L225 Difference]: With dead ends: 164 [2022-12-13 22:04:27,842 INFO L226 Difference]: Without dead ends: 164 [2022-12-13 22:04:27,842 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 115 GetRequests, 94 SyntacticMatches, 0 SemanticMatches, 21 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 38 ImplicationChecksByTransitivity, 0.7s TimeCoverageRelationStatistics Valid=85, Invalid=421, Unknown=0, NotChecked=0, Total=506 [2022-12-13 22:04:27,843 INFO L413 NwaCegarLoop]: 58 mSDtfsCounter, 273 mSDsluCounter, 440 mSDsCounter, 0 mSdLazyCounter, 322 mSolverCounterSat, 13 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.7s Time, 0 mProtectedPredicate, 0 mProtectedAction, 276 SdHoareTripleChecker+Valid, 498 SdHoareTripleChecker+Invalid, 335 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 13 IncrementalHoareTripleChecker+Valid, 322 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.8s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:27,843 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [276 Valid, 498 Invalid, 335 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [13 Valid, 322 Invalid, 0 Unknown, 0 Unchecked, 0.8s Time] [2022-12-13 22:04:27,843 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 164 states. [2022-12-13 22:04:27,845 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 164 to 129. [2022-12-13 22:04:27,845 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 129 states, 110 states have (on average 1.3636363636363635) internal successors, (150), 121 states have internal predecessors, (150), 4 states have call successors, (4), 1 states have call predecessors, (4), 2 states have return successors, (7), 6 states have call predecessors, (7), 4 states have call successors, (7) [2022-12-13 22:04:27,846 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 129 states to 129 states and 161 transitions. [2022-12-13 22:04:27,846 INFO L78 Accepts]: Start accepts. Automaton has 129 states and 161 transitions. Word has length 55 [2022-12-13 22:04:27,846 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:27,846 INFO L495 AbstractCegarLoop]: Abstraction has 129 states and 161 transitions. [2022-12-13 22:04:27,846 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 16 states, 13 states have (on average 3.6153846153846154) internal successors, (47), 14 states have internal predecessors, (47), 4 states have call successors, (4), 3 states have call predecessors, (4), 4 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:04:27,846 INFO L276 IsEmpty]: Start isEmpty. Operand 129 states and 161 transitions. [2022-12-13 22:04:27,847 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 22:04:27,847 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:27,847 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:27,860 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (19)] Ended with exit code 0 [2022-12-13 22:04:28,047 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 19 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:28,048 INFO L420 AbstractCegarLoop]: === Iteration 18 === Targeting ULTIMATE.startErr12REQUIRES_VIOLATIONMEMORY_DEREFERENCE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:28,049 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:28,049 INFO L85 PathProgramCache]: Analyzing trace with hash -675254105, now seen corresponding path program 1 times [2022-12-13 22:04:28,050 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:28,050 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1785605681] [2022-12-13 22:04:28,050 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:28,051 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:28,051 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:28,053 INFO L229 MonitoredProcess]: Starting monitored process 20 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:28,057 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Waiting until timeout for monitored process [2022-12-13 22:04:28,185 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:28,193 INFO L263 TraceCheckSpWp]: Trace formula consists of 244 conjuncts, 6 conjunts are in the unsatisfiable core [2022-12-13 22:04:28,194 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:28,277 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 22:04:28,277 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:28,370 INFO L134 CoverageAnalysis]: Checked inductivity of 150 backedges. 0 proven. 1 refuted. 0 times theorem prover too weak. 149 trivial. 0 not checked. [2022-12-13 22:04:28,370 INFO L136 FreeRefinementEngine]: Strategy WOLF found an infeasible trace [2022-12-13 22:04:28,370 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleMathsat [1785605681] [2022-12-13 22:04:28,370 INFO L157 FreeRefinementEngine]: IpTcStrategyModuleMathsat [1785605681] provided 0 perfect and 2 imperfect interpolant sequences [2022-12-13 22:04:28,370 INFO L184 FreeRefinementEngine]: Found 0 perfect and 2 imperfect interpolant sequences. [2022-12-13 22:04:28,370 INFO L197 FreeRefinementEngine]: Number of different interpolants: perfect sequences [] imperfect sequences [5, 5] total 8 [2022-12-13 22:04:28,370 INFO L121 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [216829030] [2022-12-13 22:04:28,370 INFO L85 oduleStraightlineAll]: Using 2 imperfect interpolants to construct interpolant automaton [2022-12-13 22:04:28,371 INFO L571 AbstractCegarLoop]: INTERPOLANT automaton has 8 states [2022-12-13 22:04:28,371 INFO L100 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy WOLF [2022-12-13 22:04:28,371 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 8 interpolants. [2022-12-13 22:04:28,371 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=18, Invalid=38, Unknown=0, NotChecked=0, Total=56 [2022-12-13 22:04:28,372 INFO L87 Difference]: Start difference. First operand 129 states and 161 transitions. Second operand has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:04:28,515 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2022-12-13 22:04:28,515 INFO L93 Difference]: Finished difference Result 333 states and 433 transitions. [2022-12-13 22:04:28,516 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2022-12-13 22:04:28,516 INFO L78 Accepts]: Start accepts. Automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) Word has length 56 [2022-12-13 22:04:28,516 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2022-12-13 22:04:28,517 INFO L225 Difference]: With dead ends: 333 [2022-12-13 22:04:28,518 INFO L226 Difference]: Without dead ends: 333 [2022-12-13 22:04:28,518 INFO L412 NwaCegarLoop]: 0 DeclaredPredicates, 114 GetRequests, 104 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=48, Invalid=84, Unknown=0, NotChecked=0, Total=132 [2022-12-13 22:04:28,518 INFO L413 NwaCegarLoop]: 73 mSDtfsCounter, 368 mSDsluCounter, 171 mSDsCounter, 0 mSdLazyCounter, 52 mSolverCounterSat, 10 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 368 SdHoareTripleChecker+Valid, 244 SdHoareTripleChecker+Invalid, 62 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 10 IncrementalHoareTripleChecker+Valid, 52 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.1s IncrementalHoareTripleChecker+Time [2022-12-13 22:04:28,518 INFO L414 NwaCegarLoop]: SdHoareTripleChecker [368 Valid, 244 Invalid, 62 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [10 Valid, 52 Invalid, 0 Unknown, 0 Unchecked, 0.1s Time] [2022-12-13 22:04:28,519 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 333 states. [2022-12-13 22:04:28,523 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 333 to 161. [2022-12-13 22:04:28,524 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 161 states, 138 states have (on average 1.3478260869565217) internal successors, (186), 147 states have internal predecessors, (186), 8 states have call successors, (8), 1 states have call predecessors, (8), 2 states have return successors, (15), 12 states have call predecessors, (15), 8 states have call successors, (15) [2022-12-13 22:04:28,525 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 161 states to 161 states and 209 transitions. [2022-12-13 22:04:28,525 INFO L78 Accepts]: Start accepts. Automaton has 161 states and 209 transitions. Word has length 56 [2022-12-13 22:04:28,525 INFO L84 Accepts]: Finished accepts. word is rejected. [2022-12-13 22:04:28,525 INFO L495 AbstractCegarLoop]: Abstraction has 161 states and 209 transitions. [2022-12-13 22:04:28,525 INFO L496 AbstractCegarLoop]: INTERPOLANT automaton has has 8 states, 8 states have (on average 4.5) internal successors, (36), 8 states have internal predecessors, (36), 4 states have call successors, (4), 1 states have call predecessors, (4), 1 states have return successors, (4), 4 states have call predecessors, (4), 4 states have call successors, (4) [2022-12-13 22:04:28,525 INFO L276 IsEmpty]: Start isEmpty. Operand 161 states and 209 transitions. [2022-12-13 22:04:28,526 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 57 [2022-12-13 22:04:28,526 INFO L187 NwaCegarLoop]: Found error trace [2022-12-13 22:04:28,526 INFO L195 NwaCegarLoop]: trace histogram [10, 10, 10, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2022-12-13 22:04:28,534 INFO L552 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (20)] Ended with exit code 0 [2022-12-13 22:04:28,726 WARN L477 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 20 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:28,727 INFO L420 AbstractCegarLoop]: === Iteration 19 === Targeting ULTIMATE.startErr13ASSERT_VIOLATIONMEMORY_FREE === [ULTIMATE.startErr0REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr1REQUIRES_VIOLATIONMEMORY_DEREFERENCE, ULTIMATE.startErr2REQUIRES_VIOLATIONMEMORY_DEREFERENCE (and 14 more)] === [2022-12-13 22:04:28,728 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2022-12-13 22:04:28,728 INFO L85 PathProgramCache]: Analyzing trace with hash 935210686, now seen corresponding path program 1 times [2022-12-13 22:04:28,729 INFO L118 FreeRefinementEngine]: Executing refinement strategy WOLF [2022-12-13 22:04:28,729 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleMathsat [1791017426] [2022-12-13 22:04:28,729 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2022-12-13 22:04:28,730 INFO L173 SolverBuilder]: Constructing external solver with command: mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 [2022-12-13 22:04:28,730 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat [2022-12-13 22:04:28,732 INFO L229 MonitoredProcess]: Starting monitored process 21 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (exit command is (exit), workingDir is null) [2022-12-13 22:04:28,735 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_b594aa1b-57a5-4d10-9490-9b1e65389ba0/bin/uautomizer-uyxdKDjOR8/mathsat -theory.fp.to_bv_overflow_mode=1 -theory.fp.minmax_zero_mode=4 -theory.bv.div_by_zero_mode=1 -unsat_core_generation=3 (21)] Waiting until timeout for monitored process [2022-12-13 22:04:28,970 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2022-12-13 22:04:28,978 INFO L263 TraceCheckSpWp]: Trace formula consists of 232 conjuncts, 38 conjunts are in the unsatisfiable core [2022-12-13 22:04:28,981 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2022-12-13 22:04:28,989 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 0 select indices, 0 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 0 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 11 [2022-12-13 22:04:29,034 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 28 treesize of output 27 [2022-12-13 22:04:29,077 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,077 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,107 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,107 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,137 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,137 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,172 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,172 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,211 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,211 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,257 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,257 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,308 INFO L321 Elim1Store]: treesize reduction 21, result has 25.0 percent of original size [2022-12-13 22:04:29,308 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 1 case distinctions, treesize of input 23 treesize of output 22 [2022-12-13 22:04:29,339 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 1 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 21 treesize of output 20 [2022-12-13 22:04:29,460 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 15 treesize of output 7 [2022-12-13 22:04:29,480 INFO L134 CoverageAnalysis]: Checked inductivity of 149 backedges. 4 proven. 145 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2022-12-13 22:04:29,480 INFO L328 TraceCheckSpWp]: Computing backward predicates... [2022-12-13 22:04:36,033 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 2, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 86 treesize of output 84 [2022-12-13 22:04:36,724 INFO L350 Elim1Store]: Elim1 eliminated variable of array dimension 1, 0 stores, 1 select indices, 1 select index equivalence classes, 0 disjoint index pairs (out of 0 index pairs), introduced 1 new quantified variables, introduced 0 case distinctions, treesize of input 180369752046 treesize of output 180352974830